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07070100000000000081A400000000000000000000000164B91ACB000000F9000000000000000000000000000000000000002700000000pdpersistd-1.0.2.9.g8f25669/.gitignore**.o
.deps
ChangeLog
Makefile
Makefile.in
TAGS
aclocal.m4
autoconf
autom4te.cache
common/TAGS
common/libcommon.a
config.h
config.h.in
config.log
config.status
configure
daemon/TAGS
daemon/pdpersistd
pdpersistd.spec
stamp-h1
tool/TAGS
tool/pdpersist
07070100000001000081A400000000000000000000000164B91ACB0000012B000000000000000000000000000000000000002B00000000pdpersistd-1.0.2.9.g8f25669/.gitlab-ci.ymlimage: registry.gitlab.com/etherlab.org/build-container-factory/leap-15.3:pdcom
build:
    stage: build
    script:
        - ./bootstrap.sh
        - mkdir build
        - cd build
        - ../configure
        - make -j4

include:
    - template: 'Workflows/MergeRequest-Pipelines.gitlab-ci.yml'
07070100000002000081A400000000000000000000000164B91ACB00000037000000000000000000000000000000000000002400000000pdpersistd-1.0.2.9.g8f25669/AUTHORS$Id$

Dipl.-Ing. (FH) Florian Pose <fp@igh-essen.com>

07070100000003000081A400000000000000000000000164B91ACB0000894B000000000000000000000000000000000000002400000000pdpersistd-1.0.2.9.g8f25669/COPYING                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

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to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

<one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

Also add information on how to contact you by electronic and paper mail.

If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:

<program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".

You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.

The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
07070100000004000081A400000000000000000000000164B91ACB00002528000000000000000000000000000000000000002400000000pdpersistd-1.0.2.9.g8f25669/INSTALLInstallation Instructions
*************************

This file is free documentation; the Free Software Foundation gives
unlimited permission to copy, distribute and modify it.

Basic Installation
==================

Briefly, the shell commands `./configure; make; make install' should
configure, build, and install this package.  The following
more-detailed instructions are generic; see the `README' file for
instructions specific to this package.

The `configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation.  It uses
those values to create a `Makefile' in each directory of the package.
It may also create one or more `.h' files containing system-dependent
definitions.  Finally, it creates a shell script `config.status' that
you can run in the future to recreate the current configuration, and a
file `config.log' containing compiler output (useful mainly for
debugging `configure').

It can also use an optional file (typically called `config.cache'
and enabled with `--cache-file=config.cache' or simply `-C') that saves
the results of its tests to speed up reconfiguring.  Caching is
disabled by default to prevent problems with accidental use of stale
cache files.

If you need to do unusual things to compile the package, please try
to figure out how `configure' could check whether to do them, and mail
diffs or instructions to the address given in the `README' so they can
be considered for the next release.  If you are using the cache, and at
some point `config.cache' contains results you don't want to keep, you
may remove or edit it.

The file `configure.ac' (or `configure.in') is used to create
`configure' by a program called `autoconf'.  You need `configure.ac' if
you want to change it or regenerate `configure' using a newer version
of `autoconf'.

The simplest way to compile this package is:

1. `cd' to the directory containing the package's source code and type
     `./configure' to configure the package for your system.

Running `configure' might take a while.  While running, it prints
     some messages telling which features it is checking for.

2. Type `make' to compile the package.

3. Optionally, type `make check' to run any self-tests that come with
     the package.

4. Type `make install' to install the programs and any data files and
     documentation.

5. You can remove the program binaries and object files from the
     source code directory by typing `make clean'.  To also remove the
     files that `configure' created (so you can compile the package for
     a different kind of computer), type `make distclean'.  There is
     also a `make maintainer-clean' target, but that is intended mainly
     for the package's developers.  If you use it, you may have to get
     all sorts of other programs in order to regenerate files that came
     with the distribution.

6. Often, you can also type `make uninstall' to remove the installed
     files again.

Compilers and Options
=====================

Some systems require unusual options for compilation or linking that the
`configure' script does not know about.  Run `./configure --help' for
details on some of the pertinent environment variables.

You can give `configure' initial values for configuration parameters
by setting variables in the command line or in the environment.  Here
is an example:

./configure CC=c99 CFLAGS=-g LIBS=-lposix

*Note Defining Variables::, for more details.

Compiling For Multiple Architectures
====================================

You can compile the package for more than one kind of computer at the
same time, by placing the object files for each architecture in their
own directory.  To do this, you can use GNU `make'.  `cd' to the
directory where you want the object files and executables to go and run
the `configure' script.  `configure' automatically checks for the
source code in the directory that `configure' is in and in `..'.

With a non-GNU `make', it is safer to compile the package for one
architecture at a time in the source code directory.  After you have
installed the package for one architecture, use `make distclean' before
reconfiguring for another architecture.

Installation Names
==================

By default, `make install' installs the package's commands under
`/usr/local/bin', include files under `/usr/local/include', etc.  You
can specify an installation prefix other than `/usr/local' by giving
`configure' the option `--prefix=PREFIX'.

You can specify separate installation prefixes for
architecture-specific files and architecture-independent files.  If you
pass the option `--exec-prefix=PREFIX' to `configure', the package uses
PREFIX as the prefix for installing programs and libraries.
Documentation and other data files still use the regular prefix.

In addition, if you use an unusual directory layout you can give
options like `--bindir=DIR' to specify different values for particular
kinds of files.  Run `configure --help' for a list of the directories
you can set and what kinds of files go in them.

If the package supports it, you can cause programs to be installed
with an extra prefix or suffix on their names by giving `configure' the
option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.

Optional Features
=================

Some packages pay attention to `--enable-FEATURE' options to
`configure', where FEATURE indicates an optional part of the package.
They may also pay attention to `--with-PACKAGE' options, where PACKAGE
is something like `gnu-as' or `x' (for the X Window System).  The
`README' should mention any `--enable-' and `--with-' options that the
package recognizes.

For packages that use the X Window System, `configure' can usually
find the X include and library files automatically, but if it doesn't,
you can use the `configure' options `--x-includes=DIR' and
`--x-libraries=DIR' to specify their locations.

Specifying the System Type
==========================

There may be some features `configure' cannot figure out automatically,
but needs to determine by the type of machine the package will run on.
Usually, assuming the package is built to be run on the _same_
architectures, `configure' can figure that out, but if it prints a
message saying it cannot guess the machine type, give it the
`--build=TYPE' option.  TYPE can either be a short name for the system
type, such as `sun4', or a canonical name which has the form:

CPU-COMPANY-SYSTEM

where SYSTEM can have one of these forms:

OS KERNEL-OS

See the file `config.sub' for the possible values of each field.  If
`config.sub' isn't included in this package, then this package doesn't
need to know the machine type.

If you are _building_ compiler tools for cross-compiling, you should
use the option `--target=TYPE' to select the type of system they will
produce code for.

If you want to _use_ a cross compiler, that generates code for a
platform different from the build platform, you should specify the
"host" platform (i.e., that on which the generated programs will
eventually be run) with `--host=TYPE'.

Sharing Defaults
================

If you want to set default values for `configure' scripts to share, you
can create a site shell script called `config.site' that gives default
values for variables like `CC', `cache_file', and `prefix'.
`configure' looks for `PREFIX/share/config.site' if it exists, then
`PREFIX/etc/config.site' if it exists.  Or, you can set the
`CONFIG_SITE' environment variable to the location of the site script.
A warning: not all `configure' scripts look for a site script.

Defining Variables
==================

Variables not defined in a site shell script can be set in the
environment passed to `configure'.  However, some packages may run
configure again during the build, and the customized values of these
variables may be lost.  In order to avoid this problem, you should set
them in the `configure' command line, using `VAR=value'.  For example:

./configure CC=/usr/local2/bin/gcc

causes the specified `gcc' to be used as the C compiler (unless it is
overridden in the site shell script).

Unfortunately, this technique does not work for `CONFIG_SHELL' due to
an Autoconf bug.  Until the bug is fixed you can use this workaround:

CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash

`configure' Invocation
======================

`configure' recognizes the following options to control how it operates.

`--help'
`-h'
     Print a summary of the options to `configure', and exit.

`--version'
`-V'
     Print the version of Autoconf used to generate the `configure'
     script, and exit.

`--cache-file=FILE'
     Enable the cache: use and save the results of the tests in FILE,
     traditionally `config.cache'.  FILE defaults to `/dev/null' to
     disable caching.

`--config-cache'
`-C'
     Alias for `--cache-file=config.cache'.

`--quiet'
`--silent'
`-q'
     Do not print messages saying which checks are being made.  To
     suppress all normal output, redirect it to `/dev/null' (any error
     messages will still be shown).

`--srcdir=DIR'
     Look for the package's source code in directory DIR.  Usually
     `configure' can determine that directory automatically.

`configure' also accepts some other, not widely useful, options.  Run
`configure --help' for more details.

07070100000005000081A400000000000000000000000164B91ACB000001B8000000000000000000000000000000000000002800000000pdpersistd-1.0.2.9.g8f25669/Makefile.am#-----------------------------------------------------------------------------
#
# $Id$
#
#-----------------------------------------------------------------------------

ACLOCAL_AMFLAGS = -I m4

SUBDIRS = \
	common \
	tool \
    daemon

EXTRA_DIST = \
	initdb.sql \
	pdpersistd.service \
	pdpersistd.spec.in \
	persist.conf

BUILT_SOURCES = \
	pdpersistd.spec

#-----------------------------------------------------------------------------
07070100000006000081A400000000000000000000000164B91ACB000002B4000000000000000000000000000000000000002100000000pdpersistd-1.0.2.9.g8f25669/NEWS$Id$

vim: spelllang=en spell

Version 1.0.2

- Fixed username propagation to PdCom.
- Improved behaviour on connection reset.
- Improved error logging.
- Added possibility to override host, port and database via command line.
- Added keepalive and timeout options.

Version 1.0.1

- Add service file to distribution.
- Set SO_KEEPALIVE option on socket.
- Startup log.

Version 1.0.0

- Implemented older SQLite3 3.4.1 interface.
- Sample systemd service file.
- Implemented restore variable to store state in process.
- Better log output on XML parser error.
- Added proper database indices.
- Several bug fixes.
- Ported to YAML.
- Better vector support.

Version 0.99.0

- First release.
07070100000007000081A400000000000000000000000164B91ACB000002BC000000000000000000000000000000000000002300000000pdpersistd-1.0.2.9.g8f25669/README$Id$

vim: spelllang=en spell tw=78

=== Introduction ===

This is a realtime process data persistence service using the PdCom library.
It it supports configuring persistent variables via a configuration file using
the YAML syntax and stores persistent data in an SQLite3 database. It
comes with a persistence daemon (pdpersistd) and a management tool
(pdpersist). It is licensed under the GPLv3 license.

=== Dependencies ===

- PdCom 3.0 - http://etherlab.org/en/pdcom
- SQLite 3 - http://sqlite.org
- libyaml 1.1 - http://pyyaml.org/wiki/LibYAML

=== Configuring, Building and Installing ===

./configure
make
make install

=== Creating a Database ===

sqlite3 -batch persist.db < initdb.sql

===
07070100000008000081A400000000000000000000000164B91ACB000001BB000000000000000000000000000000000000002100000000pdpersistd-1.0.2.9.g8f25669/TODO$Id$

- Fix bug with applyValues not initialized when applying.

- Log parameters without history (sql update)
- Replace gethostbyname() with getaddrinfo()
- Management tool
    - Add new variables (using ignore list)
    - Purge old data
    - Forget variables
- Rename table field data.id to data.variable
- Move datatype to data table (dimension using blob size).
- Socket blocking?
- Support regexes in path names.
- Debug SQL statements

07070100000009000081ED00000000000000000000000164B91ACB0000016E000000000000000000000000000000000000002900000000pdpersistd-1.0.2.9.g8f25669/bootstrap.sh#!/bin/bash

#------------------------------------------------------------------------------
#
#  Bootstrap script for autotools
#
#  $Id$
#
#------------------------------------------------------------------------------

set -e
set -x

touch ChangeLog
mkdir -p autoconf
autoreconf -i

#------------------------------------------------------------------------------
0707010000000A000041ED00000000000000000000000264B91ACB00000000000000000000000000000000000000000000002300000000pdpersistd-1.0.2.9.g8f25669/common0707010000000B000081A400000000000000000000000164B91ACB000001F0000000000000000000000000000000000000002F00000000pdpersistd-1.0.2.9.g8f25669/common/Makefile.am#-----------------------------------------------------------------------------
#
# $Id$
#
#-----------------------------------------------------------------------------

noinst_LIBRARIES = libcommon.a

libcommon_a_SOURCES = \
	Process.cpp \
	Variable.cpp \
	Yaml.cpp

libcommon_a_CXXFLAGS = \
	-Wall \
	$(PDCOM_CPPFLAGS) \
	$(YAML_CFLAGS) \
	$(SQLITE_CPPFLAGS)

noinst_HEADERS = \
	Process.h \
	Variable.h \
	Yaml.h

#-----------------------------------------------------------------------------
0707010000000C000081A400000000000000000000000164B91ACB0000112B000000000000000000000000000000000000002F00000000pdpersistd-1.0.2.9.g8f25669/common/Process.cpp/*****************************************************************************
 *
 * $Id$
 *
 ****************************************************************************/

#include <iostream>
#include <sstream>
#include <cstring>
#include <cerrno>
using namespace std;

#include "Process.h"
#include "Yaml.h"

using namespace Common;

/****************************************************************************/

/** Constructor.
 */
Process::Process():
    db(NULL),
    port(0)
{
}

/****************************************************************************/

/** Destructor.
 */
Process::~Process()
{
    clearVariables();

if (db) {
        sqlite3_close(db);
    }
}

/****************************************************************************/

void Process::readConfig(const string &path, const std::string &host,
        uint16_t port, const std::string &database)
{
    Yaml config;

try {
        config.load(path);
    } catch (Yaml::Exception &e) {
        stringstream err;
        err << "Failed to load: " << e.msg;
        throw Exception(err.str());
    }

processConfig(config, host, port, database);
}

/****************************************************************************/

void Process::processConfig(const Yaml &config, const std::string &host,
        uint16_t port, const std::string &database)
{
    string dbPath;
    int ret;
    Yaml vars;

if (database == "") {
        try {
            dbPath = (std::string) config["database"];
        } catch (Yaml::NotFoundException &e) {
            stringstream err;
            err << "\"database\" variable is mandatory!";
            throw Exception(err.str());
        } catch (Yaml::Exception &e) {
            stringstream err;
            err << "YAML exception: " << e.msg;
            throw Exception(err.str());
        }
    }
    else { // override config file
        dbPath = database;
    }

#ifdef SQLITE_OPEN_READWRITE
    ret = sqlite3_open_v2(dbPath.c_str(), &db, SQLITE_OPEN_READWRITE, NULL);
#else
    ret = sqlite3_open(dbPath.c_str(), &db);
#endif
    if (ret != SQLITE_OK || !db) {
        stringstream err;
        err << "Failed to open database " << dbPath << ".";
        throw Exception(err.str());
    }

if (host == "") {
        try {
            Process::host = (std::string) config["host"];
        } catch (Yaml::NotFoundException &e) {
            Process::host = "localhost";
        } catch (Yaml::Exception &e) {
            stringstream err;
            err << "YAML exception: " << e.msg;
            throw Exception(err.str());
        }
    }
    else { // override config file
        Process::host = host;
    }

if (port == 0) {
        try {
            unsigned int configPort = config["port"];
            if (configPort > 65535) {
                stringstream err;
                err << "Invalid port " << configPort << ".";
                throw Exception(err.str());
            }
            Process::port = (uint16_t) configPort;
        } catch (Yaml::NotFoundException &e) {
            Process::port = 2345;
        } catch (Yaml::Exception &e) {
            stringstream err;
            err << "YAML exception: " << e.msg;
            throw Exception(err.str());
        }
    }
    else { // override config file
        Process::port = port;
    }

try {
        vars = config["variables"];
    } catch (Yaml::NotFoundException &e) {
        return;
    } catch (Yaml::Exception &e) {
        stringstream err;
        err << "YAML exception: " << e.msg;
        throw Exception(err.str());
    }

try {
        for (size_t i = 0; true; i++) {
            Yaml y;
            try {
                y = vars[i];
            } catch (Yaml::NotFoundException &e) {
                break;
            }
            Variable *v = createVariable(db, y);
            variables.push_back(v);
        }
    } catch (Variable::Exception &e) {
        stringstream err;
        err << "Failed to create variable \"" << e.path << "\": " << e.msg;
        throw Exception(err.str());
    }
}

/****************************************************************************/

void Process::clearVariables()
{
    VariableList::iterator i;

for (i = variables.begin(); i != variables.end(); i++) {
        delete *i;
    }
    variables.clear();
}

/****************************************************************************/
0707010000000D000081A400000000000000000000000164B91ACB0000066F000000000000000000000000000000000000002D00000000pdpersistd-1.0.2.9.g8f25669/common/Process.h/*****************************************************************************
 *
 * $Id$
 *
 ****************************************************************************/

#ifndef COMMON_PROCESS_H
#define COMMON_PROCESS_H

#include <string>
#include <stdexcept>
#include <list>

#include <sqlite3.h>
#include <inttypes.h>

#include "Variable.h"

/****************************************************************************/

class Yaml;

namespace Common {

/****************************************************************************/

class Process
{
    public:
        Process();
        ~Process();

void readConfig(const std::string &,
                const std::string & = std::string(), uint16_t = 0,
                const std::string & = std::string());

/** Exception class.
         */
        class Exception: public std::runtime_error {
            public:
                /** Constructor. */
                Exception(const std::string &s /**< Message */):
                    std::runtime_error(s) {};
        };

protected:
        typedef std::list<Variable *> VariableList;
        VariableList variables;
        sqlite3 *db;
        std::string host;
        uint16_t port;

virtual void processConfig(const Yaml &, const std::string &,
                uint16_t, const std::string &);
        virtual Variable *createVariable(sqlite3 *, const Yaml &) = 0;

private:
        void clearVariables();
};

/****************************************************************************/

}; // namespace Common

#endif

/****************************************************************************/
0707010000000E000081A400000000000000000000000164B91ACB00002C29000000000000000000000000000000000000003000000000pdpersistd-1.0.2.9.g8f25669/common/Variable.cpp/****************************************************************************
 *
 * $Id$
 *
 ***************************************************************************/

#include <cstring> // memcpy

#include <sstream>
#include <iomanip>
using namespace std;

#include "Variable.h"
#include "Yaml.h"

//#define DEBUG

#ifdef DEBUG
#include <iostream>
#endif

using namespace Common;

/***************************************************************************/

Variable::Variable(
        sqlite3 *db,
        const Yaml &config
        ):
    db(db),
    updatePeriod(0U),
    waitForStable(false),
    id(-1),
    type(PdCom::Data::bool_T),
    elementCount(0)
{
	Yaml y;

try {
        path = (string) config["value"];
    } catch (Yaml::NotFoundException &e) {
        stringstream err;
        err << "\"value\" setting is mandatory!";
        throw Exception(this, err.str());
    } catch (Yaml::Exception &e) {
        stringstream err;
        err << "YAML exception: " << e.msg;
        throw Exception(this, err.str());
    }

try {
        writePath = (string) config["write"];
    } catch (Yaml::NotFoundException &e) {
        writePath = path;
    } catch (Yaml::Exception &e) {
        stringstream err;
        err << "YAML exception: " << e.msg;
        throw Exception(this, err.str());
    }

try {
        applyPath = (string) config["apply"];
    } catch (Yaml::NotFoundException &e) {
        // no apply path
    } catch (Yaml::Exception &e) {
        stringstream err;
        err << "YAML exception: " << e.msg;
        throw Exception(this, err.str());
    }

try {
        updatePeriod = config["update"];
    } catch (Yaml::NotFoundException &e) {
        // initialized above
    } catch (Yaml::Exception &e) {
        stringstream err;
        err << "YAML exception: " << e.msg;
        throw Exception(this, err.str());
    }

try {
        waitForStable = config["stable"];
    } catch (Yaml::NotFoundException &e) {
        // initialized above
    } catch (Yaml::Exception &e) {
        stringstream err;
        err << "YAML exception: " << e.msg;
        throw Exception(this, err.str());
    }
}

/***************************************************************************/

Variable::~Variable()
{
    reset();
}

/***************************************************************************/

void Variable::reset()
{
    id = -1;
    elementCount = 0U;
}

/***************************************************************************/

size_t Variable::memSize() const
{
    return elementCount * PdCom::Data::getTypeWidth(type);
}

/***************************************************************************/

void Variable::queryVariable()
{
    int ret;
    sqlite3_stmt *stmt = NULL;

stringstream sql;
    sql << "select id, type, size from variables where path == '"
        << path << "'";
    string sqlStr = sql.str();
    ret = sqlite3_prepare_v2(db, sqlStr.c_str(), sqlStr.size() + 1,
            &stmt, NULL);
    if (ret != SQLITE_OK) {
        stringstream err;
        err << "Failed to create variable query statement '" << sqlStr
            << "': Error code " << ret << ": " << sqlite3_errmsg(db);
        throw Exception(this, err.str());
    }
    ret = sqlite3_step(stmt);
    switch (ret) {
        case SQLITE_DONE:
#ifdef DEBUG
            cerr << "Variable \"" << path
                << "\" not in database yet." << endl;
#endif
            break;

case SQLITE_ROW:
            id = sqlite3_column_int(stmt, 0);
#ifdef DEBUG
            cerr << "Variable \"" << path
                << "\" present (" << id << ")." << endl;
#endif
            /* Do not allow negative IDs because -1 is used as a marker for
             * variable not in database yet. */
            if (id < 0) {
                stringstream err;
                err << "Variable query returned negative id " << id << ".";
                sqlite3_finalize(stmt);
                throw Exception(this, err.str());
            }

type = (PdCom::Data::Type) sqlite3_column_int(stmt, 1);
            elementCount = sqlite3_column_int(stmt, 2);
            break;

default:
            stringstream err;
            err << "Varable query returned " << ret << ": "
                << sqlite3_errmsg(db);
            sqlite3_finalize(stmt);
            throw Exception(this, err.str());
    }

sqlite3_finalize(stmt);
}

/***************************************************************************/

bool Variable::queryLastData(void *target)
{
    sqlite3_stmt *stmt = NULL;
    int ret;
    bool dataPresent = false;

if (id == -1) {
        stringstream err;
        err << "Trying to query data using variable id -1!";
        throw Exception(this, err.str());
    }

stringstream sql;
    sql << "select value from data where id = " << id
        << " order by time desc limit 1";
    string sqlStr = sql.str();
    ret = sqlite3_prepare_v2(db, sqlStr.c_str(), sqlStr.size() + 1,
            &stmt, NULL);
    if (ret != SQLITE_OK) {
        stringstream err;
        err << "Failed to create data query statement '" << sqlStr
            << "': Error code " << ret << ": " << sqlite3_errmsg(db);
        throw Exception(this, err.str());
    }

ret = sqlite3_step(stmt);
    switch (ret) {
        case SQLITE_DONE:
            break;

case SQLITE_ROW:
            {
                int blobSize = sqlite3_column_bytes(stmt, 0);
                if (blobSize != (int) memSize()) {
                    stringstream err;
                    err << "Data query returned invalid data size (blob "
                        << blobSize << ", variable " << memSize() << ")!";
                    sqlite3_finalize(stmt);
                    throw Exception(this, err.str());
                }
                const void *d = sqlite3_column_blob(stmt, 0);
                memcpy(target, d, memSize());
                dataPresent = true;
            }
            break;

default:
            stringstream err;
            err << "Data query returned " << ret << ": "
                << sqlite3_errmsg(db);
            sqlite3_finalize(stmt);
            throw Exception(this, err.str());
    }

sqlite3_finalize(stmt);
    return dataPresent;
}

/***************************************************************************/

void Variable::insertVariable(
        PdCom::Data::Type t,
        unsigned int count
        )
{
    sqlite3_stmt *stmt = NULL;
    int ret;

stringstream sql;
    sql << "insert into variables (id, path, type, size) values ("
        << "NULL, '" << getPath() << "', " << t << ", " << count << ")";
    string sqlStr = sql.str();
    ret = sqlite3_prepare_v2(db, sqlStr.c_str(), sqlStr.size() + 1,
            &stmt, NULL);
    if (ret != SQLITE_OK) {
        stringstream err;
        err << "Failed to create variable insertion statement '" << sqlStr
            << "': Error code " << ret << ": " << sqlite3_errmsg(db);
        throw Exception(this, err.str());
    }

ret = sqlite3_step(stmt);
    switch (ret) {
        case SQLITE_DONE:
            id = sqlite3_last_insert_rowid(db);
            type = t;
            elementCount = count;
            break;

default:
            stringstream err;
            err << "Inserting variable returned " << ret << ": "
                << sqlite3_errmsg(db);
            sqlite3_finalize(stmt);
            throw Exception(this, err.str());
    }

sqlite3_finalize(stmt);
}

/***************************************************************************/

void Variable::insertData(const struct timeval &t, const void *data)
{
    sqlite3_stmt *stmt = NULL;
    int ret;

if (id == -1) {
        stringstream err;
        err << "Trying to insert data using variable id -1!";
        throw Exception(this, err.str());
    }

stringstream sql;
    sql << "insert into data (id, time, value) values ("
        << id << ", " << t.tv_sec << ", ?)";
    string sqlStr = sql.str();
    ret = sqlite3_prepare_v2(db, sqlStr.c_str(), sqlStr.size() + 1,
            &stmt, NULL);
    if (ret != SQLITE_OK) {
        stringstream err;
        err << "Failed to create data insertion statement '" << sqlStr
            << "': Error code " << ret << ": " << sqlite3_errmsg(db);
        throw Exception(this, err.str());
    }

ret = sqlite3_bind_blob(stmt, 1, data, memSize(), SQLITE_STATIC);
    if (ret != SQLITE_OK) {
        stringstream err;
        err << "Failed to bind BLOB. Error code "
            << ret << ": " << sqlite3_errmsg(db);
        sqlite3_finalize(stmt);
        throw Exception(this, err.str());
    }

ret = sqlite3_step(stmt);
    switch (ret) {
        case SQLITE_DONE:
            break;

default:
            stringstream err;
            err << "Inserting data returned " << ret << ": "
                << sqlite3_errmsg(db);
            sqlite3_finalize(stmt);
            throw Exception(this, err.str());
    }

sqlite3_finalize(stmt);
}

/***************************************************************************/

string Variable::output(const void *data, PdCom::Data::Type type,
        unsigned int count, unsigned int width, const string &indent)
{
    stringstream ret;
    unsigned int i, lineLen = 0;

for (i = 0; i < count; i++) {
        stringstream str;

switch (type) {
            case PdCom::Data::bool_T:
                str << (unsigned int) ((const bool *) data)[i];
                break;
            case PdCom::Data::uint8_T:
                str << (unsigned int) ((const uint8_t *) data)[i];
                break;
            case PdCom::Data::sint8_T:
                str << (int) ((const int8_t *) data)[i];
                break;
            case PdCom::Data::uint16_T:
                str << ((const uint16_t *) data)[i];
                break;
            case PdCom::Data::sint16_T:
                str << ((const int16_t *) data)[i];
                break;
            case PdCom::Data::uint32_T:
                str << ((const uint32_t *) data)[i];
                break;
            case PdCom::Data::sint32_T:
                str << ((const int32_t *) data)[i];
                break;
            case PdCom::Data::uint64_T:
                str << ((const uint64_t *) data)[i];
                break;
            case PdCom::Data::sint64_T:
                str << ((const int64_t *) data)[i];
                break;
            case PdCom::Data::single_T:
                str << setprecision(15) << ((const float *) data)[i];
                break;
            case PdCom::Data::double_T:
                str << setprecision(15) << ((const double *) data)[i];
                break;
        }

size_t size = str.str().size();
        unsigned int preSpace = lineLen > 0;
        unsigned int comma = i < count - 1;

if (width > 0 && lineLen + preSpace + size + comma > width) {
            ret << endl << indent;
            lineLen = 0;
        }

if (lineLen > 0) {
            ret << " ";
            lineLen += 1;
        }

ret << str.str();
        lineLen += size;

if (comma) {
            ret << ",";
            lineLen += 1;
        }
    }
    return ret.str();
}

/***************************************************************************/
0707010000000F000081A400000000000000000000000164B91ACB00000920000000000000000000000000000000000000002E00000000pdpersistd-1.0.2.9.g8f25669/common/Variable.h/****************************************************************************
 *
 * $Id$
 *
 ***************************************************************************/

#ifndef COMMON_VARIABLE_H
#define COMMON_VARIABLE_H

#include <string>
#include <sqlite3.h>
#include <pdcom.h>

/***************************************************************************/

class Yaml;

namespace Common {

/***************************************************************************/

class Variable
{
    public:
        Variable(sqlite3 *, const Yaml &);
        virtual ~Variable();

const std::string &getPath() const { return path; }
        const std::string &getWritePath() const { return writePath; }
        const std::string &getApplyPath() const { return applyPath; }
        unsigned int getUpdatePeriod() const { return updatePeriod; }
        bool getWaitForStable() const { return waitForStable; }

bool inDb() const { return id != -1; }
        PdCom::Data::Type getType() const { return type; }
        unsigned int getElementCount() const { return elementCount; }
        static std::string output(const void *, PdCom::Data::Type,
                unsigned int, unsigned int = 0,
                const std::string & = std::string());

class Exception
        {
            public:
                Exception(const Variable *v, const std::string &m):
                    path(v->getPath()), msg(m) {}
                std::string path;
                std::string msg;
        };

protected:
        void reset();
        size_t memSize() const;

void queryVariable();
        bool queryLastData(void *);

void insertVariable(PdCom::Data::Type, unsigned int);
        void insertData(const struct timeval &, const void *);

private:
        sqlite3 * const db;

// configuration attributes
        std::string path;
        std::string writePath;
        std::string applyPath;
        unsigned int updatePeriod;
        bool waitForStable;

// stored variable attributes
        int id;
        PdCom::Data::Type type;
        unsigned int elementCount;

Variable();
};

/***************************************************************************/

}; // namespace Common

#endif

/***************************************************************************/
07070100000010000081A400000000000000000000000164B91ACB0000250D000000000000000000000000000000000000002C00000000pdpersistd-1.0.2.9.g8f25669/common/Yaml.cpp/****************************************************************************
 *
 *  $Id$
 *
 *  Copyright 2010 Richard Hacker (lerichi at gmx dot net)
 *            2012 Florian Pose <fp@igh-essen.com>
 *
 *  This file is part of the process data persistence daemon.
 *
 *  The process data persistence daemon is free software: you can redistribute
 *  it and/or modify it under the terms of the GNU General Public License as
 *  published by the Free Software Foundation, either version 3 of the
 *  License, or (at your option) any later version.
 *
 *  The process data persistence daemon is distributed in the hope that it
 *  will be useful, but WITHOUT ANY WARRANTY; without even the implied
 *  warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with the process data persistence daemon. If not, see
 *  <http://www.gnu.org/licenses/>.
 *
 ****************************************************************************/

#include <iostream>
#include <cstring>
#include <cstdio>
#include <cerrno>
#include <sstream>
#include <algorithm>
#include <cctype>

using namespace std;

#include "Yaml.h"

#define DEBUG 0

/****************************************************************************/

const char *node_types[] = {
    "unknown",
    "scalar",
    "sequence",
    "mapping"
};

/****************************************************************************/

Yaml::Yaml():
	document(NULL),
    master(false),
	node(NULL)
{
}

/****************************************************************************/

Yaml::Yaml(const Yaml &other):
    document(other.document),
    master(false),
	node(other.node)
{
}

/****************************************************************************/

Yaml::Yaml(yaml_document_t *d, yaml_node_t *n):
	document(d),
    master(false),
	node(n)
{
}

/****************************************************************************/

Yaml::~Yaml()
{
    if (master) {
        yaml_document_delete(document);
        delete document;
    }
}

/****************************************************************************/

void Yaml::load(const std::string &path)
{
    yaml_parser_t parser;
    FILE *fh;

/* Initialize parser */
    if (!yaml_parser_initialize(&parser)) {
        stringstream err;
        err << "Failed to initialize parser.";
        throw Exception(err.str());
    }

fh = ::fopen(path.c_str(), "r");
    if (!fh) {
		stringstream err;
        err << "Failed to open file " << path << ": "
			<< strerror(errno);
		yaml_parser_delete(&parser);
        throw Exception(err.str());
    }

yaml_parser_set_input_file(&parser, fh);

document = new yaml_document_t;

if (!yaml_parser_load(&parser, document)) {
		stringstream err;
		err << "YAML parser error at line "
            << parser.problem_mark.line
			<< ": " << parser.problem;
        yaml_document_delete(document);
        delete document;
        document = NULL;
		::fclose(fh);
		yaml_parser_delete(&parser);
        throw Exception(err.str());
    }

::fclose(fh);
    yaml_parser_delete(&parser);

master = true;
    node = yaml_document_get_root_node(document);
}

/****************************************************************************/

void Yaml::dump() const
{
    if (!document or !node) {
        return;
    }

dump_recursive((yaml_document_t *) document, (yaml_node_t *) node, 0);
}

/****************************************************************************/

Yaml Yaml::operator[](const char *key) const
{
    return this->operator[](std::string(key));
}

/****************************************************************************/

Yaml Yaml::operator[](const std::string& key) const
{
#if DEBUG
    cerr << (void *) node << " index key=" << key << endl;
#endif
    if (!node) {
        throw Exception("Index operator called for empty node!");
    }

if (node->type != YAML_MAPPING_NODE) {
        stringstream err;
        err << "Index operator with string key \"" << key << "\" "
            << "called for " << node_types[node->type] << " node "
            << (void *) node << "!";
        throw Exception(err.str());
    }

for (yaml_node_pair_t *pair = node->data.mapping.pairs.start;
            pair != node->data.mapping.pairs.top; ++pair) {
        yaml_node_t *n = yaml_document_get_node(document, pair->key);
        if (n->type != YAML_SCALAR_NODE) {
            throw Exception("Non-scalar key found!");
        }
        if (key.size() == n->data.scalar.length
                and !strncmp((char *) n->data.scalar.value,
                    key.c_str(), n->data.scalar.length)) {
            return Yaml(document,
                    yaml_document_get_node(document, pair->value));
        }
    }

throw NotFoundException();
}

/****************************************************************************/

Yaml Yaml::operator[](size_t index) const
{
#if DEBUG
    cerr << (void *) node << " index index=" << index << endl;
#endif
    if (!node) {
        throw Exception("Index operator called for empty node!");
    }

if (node->type != YAML_SEQUENCE_NODE) {
        throw Exception("Numeric index operator called"
                " for non-sequence node!");
    }

yaml_node_item_t *n = node->data.sequence.items.start;
    for (size_t i = 0; i < index; ++n, ++i) {
        if (n == node->data.sequence.items.top) {
            throw NotFoundException();
        }
    }

if (n == node->data.sequence.items.top) {
        throw NotFoundException();
    }

return Yaml(document, yaml_document_get_node(document, *n));
}

/****************************************************************************/

Yaml::operator bool() const
{
#if DEBUG
    cerr << (void *) node << " bool" << endl;
#endif
    string val(*this);

std::transform(val.begin(), val.end(), val.begin(),
            (int (*)(int)) tolower);

return val == "yes" or val == "true" or val == "1";
}

/****************************************************************************/

Yaml::operator std::string() const
{
#if DEBUG
    cerr << (void *) node << " string" << endl;
#endif
    if (!node) {
        throw Exception("String conversion called for empty node!");
    }

if (node->type != YAML_SCALAR_NODE) {
        throw Exception("String-conversion called for non-scalar node!");
    }

return std::string((char *) node->data.scalar.value,
			node->data.scalar.length);
}

/****************************************************************************/

Yaml::operator int() const
{
#if DEBUG
    cerr << (void *) node << " int" << endl;
#endif
    string val(*this);
    char *end;
    int ret;

if (val.empty()) {
        stringstream err;
        err << "Failed to parse integer from empty string";
        throw Exception(err.str());
    }

ret = strtol(val.c_str(), &end, 0);

if (*end != '\0') {
        stringstream err;
        err << "Failed to parse integer from " << val;
        throw Exception(err.str());
    }

return ret;
}

/****************************************************************************/

Yaml::operator unsigned int() const
{
#if DEBUG
    cerr << (void *) node << " unsigned int" << endl;
#endif
    string val(*this);
    char *end;
    unsigned int ret;

if (val.empty()) {
        stringstream err;
        err << "Failed to parse unsigned integer from empty string";
        throw Exception(err.str());
    }

ret = strtoul(val.c_str(), &end, 0);

if (*end != '\0') {
        stringstream err;
        err << "Failed to parse unsigned integer from " << val;
        throw Exception(err.str());
    }

return ret;
}

/****************************************************************************/

void Yaml::dump_recursive(
        yaml_document_t *doc,
        yaml_node_t *node,
        unsigned int level
        )
{
    size_t i = 0;

if (!node) {
        return;
    }

cerr << level << " " << (void *) node << "  ";

switch (node->type) {
        case YAML_SCALAR_NODE:
            cerr << "scalar: "
                << string((char *) node->data.scalar.value,
                    node->data.scalar.length) << endl;
            break;

case YAML_SEQUENCE_NODE:
            cerr << "seq" << endl;
            for (yaml_node_item_t *n = node->data.sequence.items.start;
                    n != node->data.sequence.items.top; n++, i++) {
                cerr << "  " << i << endl;
                yaml_node_t *c = yaml_document_get_node(doc, *n);
                dump_recursive(doc, c, level + 1);
            }
            break;
        case YAML_MAPPING_NODE:
            cerr << "map" << endl;
            for (yaml_node_pair_t *pair = node->data.mapping.pairs.start;
                    pair != node->data.mapping.pairs.top; ++pair) {
                cerr << "  key:" << endl;
                yaml_node_t *key =
                    yaml_document_get_node(doc, pair->key);
                dump_recursive(doc, key, level + 1);
                cerr << "  value:" << endl;
                yaml_node_t *val =
                    yaml_document_get_node(doc, pair->value);
                dump_recursive(doc, val, level + 1);
            }
            break;
        default:
            cerr << "unknown" << endl;
            break;
    }
}

/****************************************************************************/
07070100000011000081A400000000000000000000000164B91ACB000008A9000000000000000000000000000000000000002A00000000pdpersistd-1.0.2.9.g8f25669/common/Yaml.h/*****************************************************************************
 *
 *  $Id$
 *
 *  Copyright 2010 Richard Hacker (lerichi at gmx dot net)
 *            2012 Florian Pose <fp@igh-essen.com>
 *
 *  This file is part of the process data persistence daemon.
 *
 *  The process data persistence daemon is free software: you can redistribute
 *  it and/or modify it under the terms of the GNU General Public License as
 *  published by the Free Software Foundation, either version 3 of the
 *  License, or (at your option) any later version.
 *
 *  The process data persistence daemon is distributed in the hope that it
 *  will be useful, but WITHOUT ANY WARRANTY; without even the implied
 *  warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with the process data persistence daemon. If not, see
 *  <http://www.gnu.org/licenses/>.
 *
 *****************************************************************************/

#ifndef COMMON_YAML_H
#define COMMON_YAML_H

#include <yaml.h>

#include <string>

class Yaml
{
    public:
        Yaml();
        Yaml(const Yaml &);
        ~Yaml();

void load(const std::string &);
        void dump() const;

Yaml operator[](const std::string &) const;
        Yaml operator[](const char *) const;
        Yaml operator[](char *) const;
        Yaml operator[](size_t) const;

bool isEmpty() const { return node == NULL; }

operator bool() const;
        operator int() const;
        operator unsigned int() const;
        operator std::string() const;

class Exception
        {
            public:
                Exception(const std::string &m):
					msg(m) {}
                std::string msg;
        };

class NotFoundException {};

protected:
        Yaml(yaml_document_t *, yaml_node_t *);

private:
        yaml_document_t *document;
        bool master;
        yaml_node_t *node;

static void dump_recursive(
                yaml_document_t *,
                yaml_node_t *,
                unsigned int
                );
};

#endif // YAML_H
07070100000012000081A400000000000000000000000164B91ACB000004E7000000000000000000000000000000000000002900000000pdpersistd-1.0.2.9.g8f25669/configure.ac#-----------------------------------------------------------------------------
#
# $Id$
#
#-----------------------------------------------------------------------------

AC_PREREQ([2.59])

#
# Release instructions
# - Update version below
# - Update NEWS file
# - Update ChangeLog (hg log --branch default --style=changelog > ChangeLog)
# - commit
# - make dist-bzip2
# - add tag release-x.x.x (hg tag release-x.x.x)
#
AC_INIT([pdpersistd], [1.0.2], [fp@igh.de])
AC_CONFIG_AUX_DIR(autoconf)
AM_INIT_AUTOMAKE([-Wall -Werror])
AC_CONFIG_SRCDIR([config.h.in])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])

# automake >= 1.12 needs AM_PROG_AR, older versions don't know it
m4_ifdef([AM_PROG_AR], [AM_PROG_AR])

# Checks for programs
AC_PROG_CXX
AC_PROG_INSTALL
AC_PROG_RANLIB
AC_LIB_PREFIX

# Checks for libraries
AC_CHECK_PDCOM

PKG_CHECK_MODULES([SQLITE], [sqlite3 >= 3.4],,
    AC_MSG_ERROR([sqlite 3 or newer not found.])
)
PKG_CHECK_MODULES([YAML], [yaml-0.1 >= 0.1.4],,
    AC_MSG_ERROR([yaml not found.])
)

# Output files
AC_CONFIG_FILES([
      Makefile
      common/Makefile
      daemon/Makefile
      pdpersistd.spec
      tool/Makefile
      ])
AC_OUTPUT

#-----------------------------------------------------------------------------
07070100000013000041ED00000000000000000000000264B91ACB00000000000000000000000000000000000000000000002300000000pdpersistd-1.0.2.9.g8f25669/daemon07070100000014000081A400000000000000000000000164B91ACB00000260000000000000000000000000000000000000002F00000000pdpersistd-1.0.2.9.g8f25669/daemon/Makefile.am#-----------------------------------------------------------------------------
#
# $Id$
#
#-----------------------------------------------------------------------------

bin_PROGRAMS = pdpersistd

pdpersistd_SOURCES = \
	Process.cpp \
	Variable.cpp \
	main.cpp

pdpersistd_CXXFLAGS = \
	-Wall \
	$(YAML_CFLAGS) \
	$(PDCOM_CPPFLAGS)

pdpersistd_LDFLAGS = \
	$(PDCOM_LDFLAGS)

pdpersistd_LDADD = \
	$(top_builddir)/common/libcommon.a \
	$(PDCOM_LIBS) \
	$(YAML_LIBS) \
	$(SQLITE_LIBS)

noinst_HEADERS = \
	Process.h \
	Variable.h

#-----------------------------------------------------------------------------
07070100000015000081A400000000000000000000000164B91ACB00004A9A000000000000000000000000000000000000002F00000000pdpersistd-1.0.2.9.g8f25669/daemon/Process.cpp/*****************************************************************************
 *
 * $Id$
 *
 ****************************************************************************/

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/param.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <netinet/in.h>
#include <netdb.h> // gethostbyname()
#include <string.h> // memset()
#include <syslog.h>
#include <signal.h>

#include <iostream>
#include <sstream>
#include <cstring>
using namespace std;

#include "Process.h"
#include "Variable.h"

#include "../common/Yaml.h"

#define DEBUG 0
#define DEBUG_DATA 0

/****************************************************************************/

/** Constructor.
 */
Process::Process():
    Common::Process(),
    PdCom::Process(),
    finished(false),
    reconnectPeriod(5),
    keepalivePeriod(-1),
    receiveTimeout(-1),
    fd(-1),
    writeRequest(false),
    restoreVar(NULL),
    restoreData(0),
    restoreArmed(false)
{
    lastConnectTime.tv_sec = 0U;
    lastConnectTime.tv_usec = 0U;
    keepaliveTime.tv_sec = 0U;
    keepaliveTime.tv_usec = 0U;
    lastReceiveTime.tv_sec = 0U;
    lastReceiveTime.tv_usec = 0U;

openlog("pdpersistd", LOG_PID, LOG_DAEMON);
}

/****************************************************************************/

/** Destructor.
 */
Process::~Process()
{
    disconnect();

if (restoreVar) {
        restoreVar->unsubscribe(this);
        restoreVar = NULL;
    }

if (!pidPath.empty()) {
        removePidFile();
    }

closelog();
}

/****************************************************************************/

/** Mark all variables for restoring (ignored if restore variable is used).
 */
void Process::restore()
{
    if (restorePath != "") {
        // if restore path punctionality shall be used, delay restoring until
        // checked after connection
        return;
    }

VariableList::iterator it;
    for (it = variables.begin(); it != variables.end(); it++) {
        Variable *v = dynamic_cast<Variable *>(*it);
        v->restore();
    }
}

/****************************************************************************/

/** Execute.
 */
void Process::run()
{
    struct timeval t, now;
    fd_set read_fds, write_fds, except_fds;
    int max_fd, ret;
    VariableList::iterator it;

{
        stringstream msg;
        msg << "Starting pdpersistd.";
        log(LOG_INFO, msg.str());
    }

while (!finished) {
        FD_ZERO(&read_fds);
        FD_ZERO(&write_fds);
        FD_ZERO(&except_fds);
        max_fd = -1;

if (fd != -1) {
            FD_SET(fd, &read_fds);

if (writeRequest) {
                FD_SET(fd, &write_fds);
            }

max_fd = fd;
        }

t.tv_sec = 1;
        t.tv_usec = 0;
        ret = select(max_fd + 1, &read_fds, &write_fds, &except_fds, &t);
        if (ret == -1) {
            if (errno == EINTR) {
                continue;
            } else {
                stringstream err;
                err << "select() failed: " << strerror(errno);
                log(LOG_ERR, err.str());
                throw Exception(err.str());
            }
        }

gettimeofday(&now, NULL);

if (fd != -1) { // connected

if (FD_ISSET(fd, &read_fds)) { // new data
                readSocket();
            }

if (fd != -1 && FD_ISSET(fd, &write_fds)) { // ready to write
                writeSocket();
            }

if (keepalivePeriod >= 0) {
                if (now.tv_sec >= keepaliveTime.tv_sec + keepalivePeriod) {
                    const char *data = "<ping/>\n";
                    sendData(data, strlen(data));
                    keepaliveTime = now;
                }
            }

if (receiveTimeout >= 0) {
                if (now.tv_sec >= lastReceiveTime.tv_sec + receiveTimeout) {
                    stringstream err;
                    err << "Receive timeout expired. Closing connection.";
                    log(LOG_ERR, err.str());
                    disconnect();
                    if (restorePath == "") {
                        throw Exception(err.str());
                    }
                }
            }

} else {
            if (now.tv_sec >= lastConnectTime.tv_sec + reconnectPeriod) {
                lastConnectTime = now;
                connect();
            }
        }

for (it = variables.begin(); it != variables.end(); it++) {
            Variable *v = dynamic_cast<Variable *>(*it);
            v->checkInsert();
        }
    }

{
        stringstream msg;
        msg << "Exiting.";
        log(LOG_INFO, msg.str());
    }
}

/****************************************************************************/

/** Finish.
 */
void Process::signal(int sig)
{
    stringstream msg;
    msg << "Received signal " << sig << ": " << strsignal(sig) << ".";
    log(LOG_INFO, msg.str());

switch (sig) {
        case SIGINT:
        case SIGTERM:
            finished = true;
            break;
        default:
            break;
    }
}

/****************************************************************************/

void Process::createPidFile(const string &path)
{
    int fd, ret;
    stringstream str;

fd = open(path.c_str(), O_WRONLY | O_TRUNC | O_CREAT, 0644);
    if (fd == -1) {
        stringstream err;
        err << "Failed to create PID file \"" << path << "\": "
            << strerror(errno);
        log(LOG_ERR, err.str());
        return;
    }

// remember path for deletion on exit
    pidPath = path;

str << getpid() << endl;

ret = write(fd, str.str().c_str(), str.str().length());
    if (ret == -1) {
        stringstream err;
        err << "Failed to write to PID file \"" << path << "\": "
            << strerror(errno);
        log(LOG_ERR, err.str());
        goto out_close;
    }

if ((unsigned int) ret != str.str().length()) {
        stringstream err;
        err << "Failed to write to PID file \"" << path << "\". Written "
            << ret << " of " << str.str().length() << " bytes.";
        log(LOG_ERR, err.str());
        goto out_close;
    }

out_close:
    close(fd);
}

/****************************************************************************/

void Process::processConfig(const Yaml &config, const std::string &host,
        uint16_t port, const std::string &database)
{
    Common::Process::processConfig(config, host, port, database);

try {
        restorePath = (std::string) config["restore"];
    } catch (Yaml::NotFoundException &e) {
        // unset, default = empty
    } catch (Yaml::Exception &e) {
        stringstream err;
        err << "YAML exception: " << e.msg;
        throw Exception(err.str());
    }

try {
        reconnectPeriod = config["reconnect"];
    } catch (Yaml::NotFoundException &e) {
        // unset, use default (see constructor)
    } catch (Yaml::Exception &e) {
        stringstream err;
        err << "YAML exception: " << e.msg;
        throw Exception(err.str());
    }

try {
        keepalivePeriod = config["keepalive"];
    } catch (Yaml::NotFoundException &e) {
        // unset, use default (see constructor)
    } catch (Yaml::Exception &e) {
        stringstream err;
        err << "YAML exception: " << e.msg;
        throw Exception(err.str());
    }

try {
        receiveTimeout = config["timeout"];
    } catch (Yaml::NotFoundException &e) {
        // unset, use default (see constructor)
    } catch (Yaml::Exception &e) {
        stringstream err;
        err << "YAML exception: " << e.msg;
        throw Exception(err.str());
    }

stringstream msg;
    if (restorePath == "") {
        msg << "Restore variable unset. Auto-reconnect disabled!";

// Mark all variables to store data once connected. If restoring is
        // commanded (--restore), this state will be changed later on.
        VariableList::iterator it;
        for (it = variables.begin(); it != variables.end(); it++) {
            Variable *v = dynamic_cast<Variable *>(*it);
            v->startInserting();
        }
    }
    else {
        msg << "Restore variable is \"" << restorePath << "\".";
    }
    log(LOG_INFO, msg.str());
}

/****************************************************************************/

/** Connect.
 */
void Process::connect()
{
    stringstream err;
    struct sockaddr_in serverAddress;
    struct hostent *hostent;
    int flags;

memset(&serverAddress, 0, sizeof(serverAddress));

// Get a TCP file descriptor
    if ((fd = ::socket(PF_INET, SOCK_STREAM, 0)) < 0) {
        err << "Failed to open socket: " << strerror(errno);
        log(LOG_ERR, err.str());
        throw Exception(err.str());
    }

// Set the keepalive option
    int optval = 1;
    socklen_t optlen = sizeof(optval);
    if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &optval, optlen) < 0) {
        stringstream msg;
        msg << "Failed to set SO_KEEPALIVE flag: " << strerror(errno);
        log(LOG_WARNING, msg.str());
    }

// Resolve hostname
    serverAddress.sin_family = AF_INET;
    serverAddress.sin_port = htons(port);
    if (!(hostent = gethostbyname(host.c_str()))) {
        disconnect();
        err << "Failed to resolve hostname " << host << ".";
        log(LOG_ERR, err.str());
        return;
    }

#if 0
    cerr << "Connecting to " << host << ":" << port << "..." << endl;
#endif

memcpy((char *) &serverAddress.sin_addr, hostent->h_addr,
            sizeof(struct in_addr));
    if (::connect(fd, (const struct sockaddr *) &serverAddress,
                sizeof(serverAddress))) {
        disconnect();
        err << "Failed to connect: " << strerror(errno);
        log(LOG_ERR, err.str());
        return;
    }

#if 1
    {
        stringstream msg;
        msg << "Connected to " << host << ":" << port << ".";
        log(LOG_INFO, msg.str());
    }
#endif

// Make socket non-blocking here. This is not required by
    // the library, but it may be necessary in the implementation
    // environment, for example in a desktop application where
    // the event loop should never be blocked.
    if ((flags = fcntl(fd, F_GETFL, 0)) < 0) {
        disconnect();
        err << "Failed to get flags: " << strerror(errno);
        log(LOG_ERR, err.str());
        throw Exception(err.str());
    }

flags |= O_NONBLOCK;

if (fcntl(fd, F_SETFL, flags) < 0) {
        disconnect();
        err << "Failed to set flags: " << strerror(errno);
        log(LOG_ERR, err.str());
        throw Exception(err.str());
    }

writeRequest = false;
}

/****************************************************************************/

/** Disconnect.
 */
void Process::disconnect()
{
    reset();

if (fd != -1) {
        ::close(fd);
        fd = -1;
    }
}

/****************************************************************************/

/** Read data from TCP socket.
 *
 * If new data have arrived, send them down to PdCom::Process by calling
 * newData().
 */
void Process::readSocket()
{
    int ret;
    char buf[4096];

ret = ::read(fd, buf, sizeof(buf));
    if (ret > 0) {
#if DEBUG_DATA
        cerr << "read: " << string(buf, ret) << endl;
#endif
        gettimeofday(&lastReceiveTime, NULL);
        keepaliveTime = lastReceiveTime;

try {
            newData(buf, ret);
        } catch (PdCom::Exception &e) {
            stringstream err;
            err << e.what() << ", last data: " << string(buf, ret);
            log(LOG_ERR, err.str());
            throw Exception(err.str());
        }
    } else if (ret < 0) {
        if (errno == ECONNRESET) {
            stringstream msg;
            int level = restorePath == "" ? LOG_ERR : LOG_INFO;
            msg << "Connection reset by peer.";
            log(level, msg.str());

disconnect();

if (restorePath == "") {
                throw Exception(msg.str());
            }
        }
        else if (errno != EINTR) {
            stringstream err;
            err << "read() failed: " << strerror(errno);
            log(LOG_ERR, err.str());
            throw Exception(err.str());
        }
    } else { // ret == 0
        stringstream msg;
        int level = restorePath == "" ? LOG_ERR : LOG_INFO;
        msg << "Connection closed by server.";
        log(level, msg.str());

disconnect();

if (restorePath == "") {
            throw Exception(msg.str());
        }
    }
}

/*****************************************************************************/

/* Write data to the TCP socket.
 */
void Process::writeSocket()
{
    int ret;

ret = writeReady();
    if (ret < 0) {
        stringstream err;
        err << "sendData() failed.";
        log(LOG_ERR, err.str());
        throw Exception(err.str());
    } else if (!ret) {
        // No more data to send
        writeRequest = false;
    }
}

/****************************************************************************/

Common::Variable *Process::createVariable(sqlite3 *db,
                const Yaml &config)
{
    return new Variable(db, config);
}

/****************************************************************************/

/** New data to send.
 *
 * This method is called within the newData() call and signals that there are
 * new data to be sent to the process.
 *
 * When the socket is ready to send the data, writeReady() must be called.
 */
void Process::sendRequest()
{
#if 0
    cerr << __func__ << "()" << endl;
#endif
    writeRequest = true;
}

/****************************************************************************/

/** Request to send data.
 *
 * This method is called within the context of writeReady().
 *
 * \return Number of bytes that were successfully transferred.
 */
int Process::sendData(
        const char *buf, /**< Buffer with data to send. */
        size_t len /**< Number of bytes in \a buf. */
        )
{
#if DEBUG_DATA
    cerr << __func__ << "(): " << string(buf, len) << endl;
#endif
    return ::write(fd, buf, len);
}

/****************************************************************************/

/**
 */
bool Process::clientInteraction(
        const string &,
        const string &,
        const string &,
        list<ClientInteraction> &interactionList
        )
{
    list<ClientInteraction>::iterator it;

for (it = interactionList.begin(); it != interactionList.end(); it++) {
        if (it->prompt == "Username") {
            if (!login.empty()) {
                it->response = login;
            }
        } else if (it->prompt == "Hostname") {
            char hostname[256];
            if (!gethostname(hostname, sizeof(hostname))) {
                it->response = hostname;
            }
        } else if (it->prompt == "Application") {
            it->response = "pdpersistd";
        }
    }

return true;
}

/****************************************************************************/

void Process::sigConnected()
{
    VariableList::iterator i;
    unsigned int errors = 0;

stringstream msg;
    msg << "Fetched variables.";
    log(LOG_INFO, msg.str());

restoreArmed = true;

// connect restore variable
    if (restorePath != "") {
        restoreVar = findVariable(restorePath);
        if (!restoreVar) {
            stringstream err;
            err << "Restore variable \"" << restorePath
                << "\" does not exist!";
            log(LOG_ERR, err.str());
            throw Exception(err.str());
        }

restoreVar->subscribe(this, 0.0);
        restoreVar->poll(this);

// set variables to idle mode until it is clear whether to restore or
        // insert.
        for (i = variables.begin(); i != variables.end(); i++) {
            Variable *v = dynamic_cast<Variable *>(*i);
            v->listenOnly();
        }
    }

for (i = variables.begin(); i != variables.end(); i++) {
        Variable *v = dynamic_cast<Variable *>(*i);
        try {
            v->connectVariables(this);
        } catch (Variable::Exception &e) {
            stringstream err;
            err << "Variable \"" << e.path << "\": " << e.msg;
            log(LOG_WARNING, err.str());
            errors++;
        }
    }

if (errors) {
        stringstream err;
        log(LOG_WARNING, "");
        err << "### WARNING: " << errors << " variable"
            << (errors == 1 ? " is" : "s are")
            << " not monitored. ###";
        log(LOG_WARNING, err.str());
        log(LOG_WARNING, "");
    }
}

/****************************************************************************/

void Process::processMessage(
        const PdCom::Time &time,
        LogLevel_t level,
        unsigned int messageNo,
        const std::string& message
        ) const
{
    // do not output process messages
}

/****************************************************************************/

void Process::protocolLog(
        LogLevel_t level,
        const string &message
        ) const
{
    // do not output protocol logs
}

/***************************************************************************/

void Process::notify(PdCom::Variable *v)
{
    if (v == restoreVar) {
        v->getValue(&restoreData, 1);

#if DEBUG
        cerr << __func__ << "(\"" << v->path << "\"): Changed to "
            << (int) restoreData << " armed=" << restoreArmed << endl;
#endif

if (restoreArmed) {
            VariableList::iterator it;

stringstream msg;
            if (restoreData == 0) {
                msg << "Restore variable is zero: Restoring data.";
            }
            else {
                msg << "Restore variable is non-zero. Data already restored.";
            }
            log(LOG_INFO, msg.str());

for (it = variables.begin(); it != variables.end(); it++) {
                Variable *v = dynamic_cast<Variable *>(*it);

if (restoreData == 0) {
                    v->restore();
                }
                else {
                    v->startInserting();
                }
            }

if (restoreData == 0) {
                int nonZero = 1;
                restoreVar->setValue(&nonZero, 1);
            }
        }

restoreArmed = false;
    }
}

/***************************************************************************/

void Process::notifyDelete(PdCom::Variable *v)
{
    if (v == restoreVar) {
        restoreVar = NULL;
    }
}

/****************************************************************************/

void Process::log(int prio, const string &msg)
{
    syslog(prio, "%s:%u: %s", host.c_str(), port, msg.c_str());
    cerr << msg << endl;
}

/****************************************************************************/

void Process::removePidFile()
{
    int ret;

ret = unlink(pidPath.c_str());
    if (ret == -1) {
        stringstream err;
        err << "Failed to remove PID file \"" << pidPath << "\": "
            << strerror(errno);
        log(LOG_ERR, err.str());
    }

pidPath = "";
}

/****************************************************************************/
07070100000016000081A400000000000000000000000164B91ACB0000090A000000000000000000000000000000000000002D00000000pdpersistd-1.0.2.9.g8f25669/daemon/Process.h/*****************************************************************************
 *
 * $Id$
 *
 ****************************************************************************/

#include <string>
#include <stdexcept>

#include <yaml.h>
#include <sqlite3.h>

#include <pdcom.h>
#include <time.h>

#include "../common/Process.h"

#include "Variable.h"

/****************************************************************************/

class Process:
    public Common::Process,
    public PdCom::Process,
    public PdCom::Subscriber
{
    public:
        Process();
        ~Process();

void setLogin(const char *user) { login = user; }
        void restore();
        void run();
        void signal(int);
        void createPidFile(const std::string &);

protected:
        bool finished;

void processConfig(const Yaml &, const std::string &, uint16_t,
                const std::string &); // virtual from Common::Process

private:
        std::string restorePath;
        int reconnectPeriod;
        int keepalivePeriod;
        int receiveTimeout;
        std::string login;
        int fd;
        bool writeRequest;
        struct timeval lastConnectTime;
        struct timeval keepaliveTime;
        struct timeval lastReceiveTime;
        std::string pidPath;

PdCom::Variable *restoreVar;
        uint8_t restoreData;
        bool restoreArmed;

void connect();
        void disconnect();
        void readSocket();
        void writeSocket();

// Common::Process
        Common::Variable *createVariable(sqlite3 *, const Yaml &);

// PdCom::Process
        void sendRequest();
        int sendData(const char *, size_t);
        bool clientInteraction(const std::string &, const std::string &,
                const std::string &, std::list<ClientInteraction> &);
        void sigConnected();
        void processMessage(const PdCom::Time &, LogLevel_t, unsigned int,
                const std::string &) const;
        void protocolLog(LogLevel_t, const std::string &) const;

// PdCom::Subscriber
        void notify(PdCom::Variable *);
        void notifyDelete(PdCom::Variable *);

void log(int, const std::string &);

void removePidFile();
};

/****************************************************************************/
07070100000017000081A400000000000000000000000164B91ACB0000377F000000000000000000000000000000000000003000000000pdpersistd-1.0.2.9.g8f25669/daemon/Variable.cpp/****************************************************************************
 *
 * $Id$
 *
 ***************************************************************************/

#include <string.h> // memcpy()
#include <syslog.h>

#include <iostream>
#include <sstream>
#include <iostream>
using namespace std;

#include <pdcom/Variable.h>

#include <Variable.h>

#define DEBUG 0
#define DEBUG_NOTIFY 0

/***************************************************************************/

Variable::Variable(
        sqlite3 *db,
        const Yaml &config
        ):
    Common::Variable(db, config),
    state(ListenOnly),
    var(NULL),
    writeVar(NULL),
    applyVar(NULL),
    storedData(NULL),
    storedDataPresent(false),
    receivedData(NULL),
    receivedDataPresent(false),
    applyValues(NULL),
    insertRequest(false)
{
    lastInsertTime.tv_sec = 0;
    lastInsertTime.tv_usec = 0;
    lastChangeTime.tv_sec = 0;
    lastChangeTime.tv_usec = 0;

queryVariable();

if (inDb()) {
        storedData = new uint8_t[memSize()];

try {
            storedDataPresent = queryLastData(storedData);
        } catch (Exception &e) {
            delete [] storedData;
            throw e;
        }
    }
}

/***************************************************************************/

Variable::~Variable()
{
    if (insertRequest) {
        insertData(lastChangeTime, receivedData);
    }

if (var) {
        var->unsubscribe(this);
        var = NULL;
    }

if (applyVar) {
        applyVar->unsubscribe(this);
        applyVar = NULL;
    }

if (storedData) {
        delete [] storedData;
    }

if (receivedData) {
        delete [] receivedData;
    }

if (applyValues) {
        delete [] applyValues;
    }

reset();
}

/****************************************************************************/

/** Reset the variable to ListenOnly state.
 */
void Variable::listenOnly()
{
#if DEBUG
    cerr << __func__ << "(" << getPath() << ")" << endl;
#endif

state = ListenOnly;
}

/****************************************************************************/

/** Start inserting new data on new value reception.
 */
void Variable::startInserting()
{
#if DEBUG
    cerr << __func__ << "(" << getPath() << ")" << endl;
#endif

state = InsertData;

if (storedDataPresent && receivedDataPresent) {
        if (dataDiffer(receivedData, storedData)) {
            insertRequest = true;
            checkInsert();
        }
    }
}

/****************************************************************************/

/** Restore data, or mark for later restoring.
 */
void Variable::restore()
{
#if DEBUG
    cerr << __func__ << "(" << getPath() << ")" << endl;
    cerr << "stored=" << storedDataPresent
        << " rec=" << receivedDataPresent << endl;
#endif

if (storedDataPresent) {
        if (receivedDataPresent) {
            if (dataDiffer(receivedData, storedData)) {
                restoreData();
            }
            state = InsertData;
        }
        else {
            // delay restoring until data have arrived
            state = RestoreData;
        }
    }
    else {
        // value will be inserted for the first time later
        state = InsertData;
    }
}

/***************************************************************************/

void Variable::connectVariables(PdCom::Process *p)
{
    double period;

var = p->findVariable(getPath());
    if (!var) {
        stringstream err;
        err << "Path does not exist!";
        log(LOG_ERR, err.str());
        throw Exception(this, err.str());
    }

if (inDb()) {
        /* variable already stored in database. check type and dimension */

if (var->type != getType()) {
            stringstream err;
            err << "Process variable type mismatch (stored " << getType()
                << ", online " << var->type << ")!";
            var = NULL;
            throw Exception(this, err.str());
        }

if (var->dimension.getElementCount() != getElementCount()) {
            stringstream err;
            err << "Process variable dimension mismatch (stored "
                << getElementCount() << ", online "
                << var->dimension.getElementCount() << ")!";
            var = NULL;
            throw Exception(this, err.str());
        }
    }

writeVar = p->findVariable(getWritePath());
    if (!writeVar) {
        stringstream err;
        var = NULL;
        err << "Write path \"" << getWritePath() << "\" does not exist!";
        throw Exception(this, err.str());
    }

if (!writeVar->isWrite()) {
        stringstream err;
        err << writeVar->path << " is not writable!";
        var = NULL;
        writeVar = NULL;
        throw Exception(this, err.str());
    }

if (writeVar->type != var->type) {
        stringstream err;
        err << "Write path \"" << writeVar->path << "\" type mismatch!";
        var = NULL;
        writeVar = NULL;
        throw Exception(this, err.str());
    }

if (writeVar->dimension != var->dimension) {
        stringstream err;
        err << "Write path \"" << writeVar->path << "\" dimension mismatch!";
        var = NULL;
        writeVar = NULL;
        throw Exception(this, err.str());
    }

if (!getApplyPath().empty()) {
        applyVar = p->findVariable(getApplyPath());
        if (!applyVar) {
            stringstream err;
            var = NULL;
            writeVar = NULL;
            err << "Apply path \"" << getApplyPath() << "\" does not exist!";
            throw Exception(this, err.str());
        }

if (!applyVar->isWrite()) {
            stringstream err;
            var = NULL;
            writeVar = NULL;
            applyVar = NULL;
            err << getApplyPath() << " is not writable!";
            throw Exception(this, err.str());
        }

size_t nelem = applyVar->dimension.getElementCount();
        if (applyVar->dimension != var->dimension && nelem != 1) {
            stringstream err;
            err << "Apply variable has invalid dimension!";
            throw Exception(this, err.str());
        }

applyValues = new int[nelem];
    }

if (!inDb()) {
        /* Variable is not yet in database.
         * Now it is the time to insert it. */
        insertVariable(var->type, var->dimension.getElementCount());
        log(LOG_INFO, "Inserted.");

storedData = new uint8_t[memSize()];
    }

receivedData = new uint8_t[memSize()];

if (var->samplePeriod == 0.0) {
        period = 0.0;
    } else {
        period = 1.0;
    }

var->subscribe(this, period);
    var->poll(this);

if (applyVar) {
        if (applyVar->samplePeriod == 0.0) {
            period = 0.0;
        } else {
            period = 1.0;
        }

applyVar->subscribe(this, period);
        applyVar->poll(this);
    }
}

/***************************************************************************/

void Variable::notify(PdCom::Variable *v)
{
    if (v == var) {
#if DEBUG_NOTIFY
        cerr << __func__ << "(\"" << var->path << "\"): "
            << output(var->getDataPtr(), getType(), getElementCount())
               << endl;
#endif

if (!receivedDataPresent ||
                dataDiffer(var->getDataPtr(), receivedData)) {
            gettimeofday(&lastChangeTime, NULL);
        }

memcpy(receivedData, var->getDataPtr(), memSize());
        receivedDataPresent = true;

if (storedDataPresent) {
            if (dataDiffer(receivedData, storedData)) {
#if not DEBUG
                if (!var->samplePeriod)
#endif
                {
                    stringstream msg;
                    msg << "Changed. Stored "
                        << output(storedData, getType(), getElementCount())
                        << "; received "
                        << output(receivedData, getType(), getElementCount())
                        << ".";
                    log(LOG_INFO, msg.str());
                }

// data differ from stored
                if (state == RestoreData) {
                    restoreData();
                    state = InsertData;
                } else if (state == InsertData) {
                    insertRequest = true;
                    checkInsert();
                }
            } else {
                if (state == RestoreData) {
                    // data equal; skip restoring
                    state = InsertData;
                } else if (state == InsertData) {
                    // data equal again -> reset request
                    insertRequest = false;
                }
            }
        } else {
            // if no data are in the database up to now;
            // insert the first data
            insertData(lastChangeTime, receivedData);
            state = InsertData;
        }
    }

if (applyVar && v == applyVar) {
        size_t nelem = applyVar->dimension.getElementCount();
#if DEBUG_NOTIFY
        cerr << __func__ << "(\"" << applyVar->path << "\") apply: "
            << output(applyVar->getDataPtr(), applyVar->type, nelem) << endl;
#endif
        applyVar->getValue(applyValues, nelem);
    }
}

/***************************************************************************/

void Variable::notifyDelete(PdCom::Variable *v)
{
    if (v == var) {
        if (insertRequest) {
            insertRequest = false;
            insertData(lastChangeTime, receivedData);
        }
        var = NULL;
        receivedDataPresent = false;
        if (receivedData) {
            delete [] receivedData;
            receivedData = NULL;
        }
    }

if (v == writeVar) {
        // Attention: in most cases, writeVar is not subscribed!
        writeVar = NULL;
    }

if (v == applyVar) {
        applyVar = NULL;
        if (applyValues) {
            delete [] applyValues;
            applyValues = NULL;
        }
    }
}

/***************************************************************************/

bool Variable::dataDiffer(const void *a, const void *b) const
{
    unsigned int i;

for (i = 0; i < memSize(); i++) {
        if (((const uint8_t *) a)[i] != ((const uint8_t *) b)[i]) {
            return true;
        }
    }

return false;
}

/***************************************************************************/

void Variable::restoreData()
{
    stringstream msg;

msg << "Restoring data.";
    log(LOG_INFO, msg.str());

switch (getType()) {
        case PdCom::Data::bool_T:
            writeVar->setValue((const bool *) storedData,
                    getElementCount());
            break;
        case PdCom::Data::uint8_T:
            writeVar->setValue((const uint8_t *) storedData,
                    getElementCount());
            break;
        case PdCom::Data::sint8_T:
            writeVar->setValue((const int8_t *) storedData,
                    getElementCount());
            break;
        case PdCom::Data::uint16_T:
            writeVar->setValue((const uint16_t *) storedData,
                    getElementCount());
            break;
        case PdCom::Data::sint16_T:
            writeVar->setValue((const int16_t *) storedData,
                    getElementCount());
            break;
        case PdCom::Data::uint32_T:
            writeVar->setValue((const uint32_t *) storedData,
                    getElementCount());
            break;
        case PdCom::Data::sint32_T:
            writeVar->setValue((const int32_t *) storedData,
                    getElementCount());
            break;
        case PdCom::Data::uint64_T:
            writeVar->setValue((const uint64_t *) storedData,
                    getElementCount());
            break;
        case PdCom::Data::sint64_T:
            writeVar->setValue((const int64_t *) storedData,
                    getElementCount());
            break;
        case PdCom::Data::single_T:
            writeVar->setValue((const float *) storedData,
                    getElementCount());
            break;
        case PdCom::Data::double_T:
            writeVar->setValue((const double *) storedData,
                    getElementCount());
            break;
    }

if (applyVar) {
        stringstream msg;
        size_t nelem = applyVar->dimension.getElementCount();
        int inc[nelem];
        msg << "Applying data.";
        log(LOG_INFO, msg.str());
        for (size_t i = 0; i < nelem; i++) {
            inc[i] = applyValues[i] + 1;
        }
        applyVar->setValue(inc, nelem);
    }
}

/***************************************************************************/

void Variable::checkInsert()
{
    struct timeval now, start;
    bool minTimeElapsed;

if (!insertRequest || !var) {
        return;
    }

gettimeofday(&now, NULL);
    if (getWaitForStable()) {
        start = lastChangeTime;
    } else {
        start = lastInsertTime;
    }
    minTimeElapsed = (now.tv_sec - start.tv_sec) >= (int) getUpdatePeriod();

if ((getUpdatePeriod() == 0 && var->samplePeriod == 0.0) ||
            (getUpdatePeriod() > 0 && minTimeElapsed)) {
        insertRequest = false;
        insertData(lastChangeTime, receivedData);
    }
}

/***************************************************************************/

void Variable::insertData(const struct timeval &time, const void *data)
{
    stringstream msg;

try {
        Common::Variable::insertData(time, data);
    } catch (Exception &e) {
        msg << "Failed to store data: " << e.msg;
        log(LOG_ERR, msg.str());
        return;
    }

gettimeofday(&lastInsertTime, NULL);
    memcpy(storedData, data, memSize());
    storedDataPresent = true;

msg << "Stored data.";
#if DEBUG
    msg << " sto=" << output(storedData, getType(), getElementCount())
        << " rec=" << output(receivedData, getType(), getElementCount());
#endif
    log(LOG_INFO, msg.str());
}

/***************************************************************************/

void Variable::log(int prio, const string &msg)
{
    string varMsg = "Variable \"" + getPath() + "\": " + msg;
    syslog(prio, varMsg.c_str());
    cerr << varMsg << endl;
}

/***************************************************************************/
07070100000018000081A400000000000000000000000164B91ACB0000074F000000000000000000000000000000000000002E00000000pdpersistd-1.0.2.9.g8f25669/daemon/Variable.h/****************************************************************************
 *
 * $Id$
 *
 ***************************************************************************/

#ifndef VARIABLE_H
#define VARIABLE_H

#include <string>
#include <yaml.h>
#include <sqlite3.h>

#include <pdcom/Process.h>
#include <pdcom/Subscriber.h>
#include <pdcom/Data.h>

#include "../common/Variable.h"

/***************************************************************************/

class Variable:
    public Common::Variable,
    public PdCom::Subscriber
{
    public:
        Variable(sqlite3 *, const Yaml &);
        ~Variable();

void listenOnly();
        void startInserting();
        void restore();

void connectVariables(PdCom::Process *);
        void checkInsert();

protected:
        void insertData(const struct timeval &, const void *);

private:
        enum State {
            ListenOnly, // Only listen for process data
            RestoreData, // Restore data as soon as possible
            InsertData // Listen for data and store if differing
        };
        State state;
        PdCom::Variable *var;
        PdCom::Variable *writeVar;
        PdCom::Variable *applyVar;
        uint8_t *storedData;
        bool storedDataPresent;
        uint8_t *receivedData;
        bool receivedDataPresent;
        int *applyValues;
        bool insertRequest;
        struct timeval lastInsertTime;
        struct timeval lastChangeTime;

void notify(PdCom::Variable *);
        void notifyDelete(PdCom::Variable *);

bool dataDiffer(const void *, const void *) const;
        void restoreData();

void log(int, const std::string &);

Variable();
};

/***************************************************************************/

#endif

/***************************************************************************/
07070100000019000081A400000000000000000000000164B91ACB0000175C000000000000000000000000000000000000002C00000000pdpersistd-1.0.2.9.g8f25669/daemon/main.cpp/*****************************************************************************
 *
 *  $Id$
 *
 *  vim: expandtab
 *
 ****************************************************************************/

#include <stdio.h>
#include <getopt.h>
#include <libgen.h> // basename()
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <inttypes.h>
#include <unistd.h>  // daemon()
#include <sys/types.h>
#include <pwd.h>

#include <iostream>
#include <iomanip>
#include <sstream>
#include <list>

#include <Process.h>

using namespace std;

/*****************************************************************************/

string binaryBaseName;

// option variables
bool daemonize = false;
bool restore = false;
string pidPath;
string configPath;
string host;
uint16_t port;
string database;

Process process;

/*****************************************************************************/

string usage()
{
    stringstream str;

str << "Usage: " << binaryBaseName << " [OPTIONS] <CONFIG>" << endl
        << endl
        << "Global options:" << endl
        << "  --daemon        -d         Become a daemon after" << endl
        << "                             reading configuration." << endl
        << "  --pid-file      -p <PATH>  Write PID to file." << endl
        << "  --restore       -r         Restore last values" << endl
        << "                             on connect (ignored when" << endl
        << "                             using a restore variable;" << endl
        << "                             see sample persist.conf)." << endl
        << "  --host          -o <HOST>  Override host from config file."
        << endl
        << "  --port          -t <PORT>  Override port from config file."
        << endl
        << "  --database      -a <FILE>  Override database from config file."
        << endl
        << "  --help          -h         Show this help." << endl
        << endl;

return str.str();
}

/*****************************************************************************/

int getOptions(int argc, char **argv)
{
    int c, argCount;
    stringstream str;
    bool helpRequested = false;

static struct option longOptions[] = {
        //name,       has_arg,           flag, val
        {"daemon",    no_argument,       NULL, 'd'},
        {"help",      no_argument,       NULL, 'h'},
        {"pid-file",  required_argument, NULL, 'p'},
        {"restore",   no_argument,       NULL, 'r'},
        {"host",      required_argument, NULL, 'o'},
        {"port",      required_argument, NULL, 't'},
        {"database",  required_argument, NULL, 'a'},
        {}
    };

do {
        c = getopt_long(argc, argv, "dhp:ro:t:a:", longOptions, NULL);

switch (c) {
            case 'd':
                daemonize = true;
                break;

case 'h':
                helpRequested = true;
                break;

case 'p':
                pidPath = optarg;
                break;

case 'r':
                restore = true;
                break;

case 'o':
                host = optarg;
                break;

case 't':
                {
                    char *rem;
                    unsigned int val = strtoul(optarg, &rem, 0);

if (rem == optarg || *rem || val > 65535) {
                        cerr << "Invalid port number " << optarg << endl;
                        cerr << endl << usage();
                        return 1;
                    }

port = val;
                }
                break;

case 'a':
                database = optarg;
                break;

case '?':
                cerr << endl << usage();
                return 1;

default:
                break;
        }
    }
    while (c != -1);

if (helpRequested) {
        cout << usage();
        return 2;
    }

argCount = argc - optind;
    if (argCount != 1) {
        cerr << binaryBaseName << " takes one argument:" << endl;
        cerr << usage();
        return 1;
    }

configPath = argv[optind];
    return 0;
}

/****************************************************************************/

void signal_handler(int signum)
{
    process.signal(signum);
}

/****************************************************************************/

int main(int argc, char **argv)
{
    struct sigaction sa;
    int ret;

memset(&sa, 0x00, sizeof(sa));
    sa.sa_handler = &signal_handler;

if (sigaction(SIGTERM, &sa, NULL) == -1) {
        cerr << "Failed to install signal handler!" << endl;
        return 1;
    }
    if (sigaction(SIGINT, &sa, NULL) == -1) {
        cerr << "Failed to install signal handler!" << endl;
        return 1;
    }
    if (sigaction(SIGHUP, &sa, NULL) == -1) {
        cerr << "Failed to install signal handler!" << endl;
        return 1;
    }

binaryBaseName = basename(argv[0]);

ret = getOptions(argc, argv);
    if (ret) {
        return ret;
    }

struct passwd *passwd = getpwuid(getuid());
    if (passwd) {
        process.setLogin(passwd->pw_name);
    } else {
        cerr << "Failed to determine user name: " << strerror(errno);
    }

try {
        process.readConfig(configPath, host, port, database);
    } catch (Process::Exception &e) {
        cerr << e.what() << endl;
        return 1;
    }

if (restore) {
        process.restore();
    }

if (daemonize) {
        cerr << "Now becoming a daemon." << endl;
        ret = daemon(0, 0);
        if (ret != 0) {
            cerr << "Failed to become daemon: " << strerror(errno) << endl;
            return 1;
        }
    }

if (!pidPath.empty()) {
        process.createPidFile(pidPath);
    }

try {
        process.run();
    } catch (Process::Exception &e) {
        cerr << e.what() << endl;
        return 1;
    }

return 0;
}

/****************************************************************************/
0707010000001A000081A400000000000000000000000164B91ACB000002BB000000000000000000000000000000000000002700000000pdpersistd-1.0.2.9.g8f25669/initdb.sql/*
 * $Id$
 */

/*
 * Table with variable information.
 */
CREATE TABLE variables (
	id INTEGER PRIMARY KEY AUTOINCREMENT,
	path TEXT,
	type INTEGER,
	size INTEGER
);

/*
 * Index for selecting IDs for a certain variable.
 */
CREATE INDEX path_idx on variables(path);

/*
 * Table with data.
 */
CREATE TABLE data (
	id INTEGER,
	time INTEGER,
	value BLOB
);

/*
 * Index for querying data for a certain time.
 *
 * Significantly improves the performance of queryLast(), used during initial
 * value selection and the snapshot command. So this is the most important
 * index!
 */
CREATE INDEX time_idx ON data(id, time);

/*
 * Index for history command.
 */
CREATE INDEX history_idx on data(time);
0707010000001B000041ED00000000000000000000000264B91ACB00000000000000000000000000000000000000000000001F00000000pdpersistd-1.0.2.9.g8f25669/m40707010000001C000081A400000000000000000000000164B91ACB00001A1E000000000000000000000000000000000000002D00000000pdpersistd-1.0.2.9.g8f25669/m4/lib-prefix.m4# lib-prefix.m4 serial 5 (gettext-0.15)
dnl Copyright (C) 2001-2005 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

dnl From Bruno Haible.

dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and
dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't
dnl require excessive bracketing.
ifdef([AC_HELP_STRING],
[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])],
[AC_DEFUN([AC_][LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])])

dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
dnl to access previously installed libraries. The basic assumption is that
dnl a user will want packages to use other packages he previously installed
dnl with the same --prefix option.
dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
dnl libraries, but is otherwise very convenient.
AC_DEFUN([AC_LIB_PREFIX],
[
  AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
  AC_REQUIRE([AC_PROG_CC])
  AC_REQUIRE([AC_CANONICAL_HOST])
  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
  dnl By default, look in $includedir and $libdir.
  use_additional=yes
  AC_LIB_WITH_FINAL_PREFIX([
    eval additional_includedir=\"$includedir\"
    eval additional_libdir=\"$libdir\"
  ])
  AC_LIB_ARG_WITH([lib-prefix],
[  --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
  --without-lib-prefix    don't search for libraries in includedir and libdir],
[
    if test "X$withval" = "Xno"; then
      use_additional=no
    else
      if test "X$withval" = "X"; then
        AC_LIB_WITH_FINAL_PREFIX([
          eval additional_includedir=\"$includedir\"
          eval additional_libdir=\"$libdir\"
        ])
      else
        additional_includedir="$withval/include"
        additional_libdir="$withval/$acl_libdirstem"
      fi
    fi
])
  if test $use_additional = yes; then
    dnl Potentially add $additional_includedir to $CPPFLAGS.
    dnl But don't add it
    dnl   1. if it's the standard /usr/include,
    dnl   2. if it's already present in $CPPFLAGS,
    dnl   3. if it's /usr/local/include and we are using GCC on Linux,
    dnl   4. if it doesn't exist as a directory.
    if test "X$additional_includedir" != "X/usr/include"; then
      haveit=
      for x in $CPPFLAGS; do
        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
        if test "X$x" = "X-I$additional_includedir"; then
          haveit=yes
          break
        fi
      done
      if test -z "$haveit"; then
        if test "X$additional_includedir" = "X/usr/local/include"; then
          if test -n "$GCC"; then
            case $host_os in
              linux* | gnu* | k*bsd*-gnu) haveit=yes;;
            esac
          fi
        fi
        if test -z "$haveit"; then
          if test -d "$additional_includedir"; then
            dnl Really add $additional_includedir to $CPPFLAGS.
            CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
          fi
        fi
      fi
    fi
    dnl Potentially add $additional_libdir to $LDFLAGS.
    dnl But don't add it
    dnl   1. if it's the standard /usr/lib,
    dnl   2. if it's already present in $LDFLAGS,
    dnl   3. if it's /usr/local/lib and we are using GCC on Linux,
    dnl   4. if it doesn't exist as a directory.
    if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then
      haveit=
      for x in $LDFLAGS; do
        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
        if test "X$x" = "X-L$additional_libdir"; then
          haveit=yes
          break
        fi
      done
      if test -z "$haveit"; then
        if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then
          if test -n "$GCC"; then
            case $host_os in
              linux*) haveit=yes;;
            esac
          fi
        fi
        if test -z "$haveit"; then
          if test -d "$additional_libdir"; then
            dnl Really add $additional_libdir to $LDFLAGS.
            LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
          fi
        fi
      fi
    fi
  fi
])

dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
dnl acl_final_exec_prefix, containing the values to which $prefix and
dnl $exec_prefix will expand at the end of the configure script.
AC_DEFUN([AC_LIB_PREPARE_PREFIX],
[
  dnl Unfortunately, prefix and exec_prefix get only finally determined
  dnl at the end of configure.
  if test "X$prefix" = "XNONE"; then
    acl_final_prefix="$ac_default_prefix"
  else
    acl_final_prefix="$prefix"
  fi
  if test "X$exec_prefix" = "XNONE"; then
    acl_final_exec_prefix='${prefix}'
  else
    acl_final_exec_prefix="$exec_prefix"
  fi
  acl_save_prefix="$prefix"
  prefix="$acl_final_prefix"
  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
  prefix="$acl_save_prefix"
])

dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
dnl variables prefix and exec_prefix bound to the values they will have
dnl at the end of the configure script.
AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
[
  acl_save_prefix="$prefix"
  prefix="$acl_final_prefix"
  acl_save_exec_prefix="$exec_prefix"
  exec_prefix="$acl_final_exec_prefix"
  $1
  exec_prefix="$acl_save_exec_prefix"
  prefix="$acl_save_prefix"
])

dnl AC_LIB_PREPARE_MULTILIB creates a variable acl_libdirstem, containing
dnl the basename of the libdir, either "lib" or "lib64".
AC_DEFUN([AC_LIB_PREPARE_MULTILIB],
[
  dnl There is no formal standard regarding lib and lib64. The current
  dnl practice is that on a system supporting 32-bit and 64-bit instruction
  dnl sets or ABIs, 64-bit libraries go under $prefix/lib64 and 32-bit
  dnl libraries go under $prefix/lib. We determine the compiler's default
  dnl mode by looking at the compiler's library search path. If at least
  dnl of its elements ends in /lib64 or points to a directory whose absolute
  dnl pathname ends in /lib64, we assume a 64-bit ABI. Otherwise we use the
  dnl default, namely "lib".
  acl_libdirstem=lib
  searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`
  if test -n "$searchpath"; then
    acl_save_IFS="${IFS= 	}"; IFS=":"
    for searchdir in $searchpath; do
      if test -d "$searchdir"; then
        case "$searchdir" in
          */lib64/ | */lib64 ) acl_libdirstem=lib64 ;;
          *) searchdir=`cd "$searchdir" && pwd`
             case "$searchdir" in
               */lib64 ) acl_libdirstem=lib64 ;;
             esac ;;
        esac
      fi
    done
    IFS="$acl_save_IFS"
  fi
])
0707010000001D000081A400000000000000000000000164B91ACB00000CAF000000000000000000000000000000000000002800000000pdpersistd-1.0.2.9.g8f25669/m4/pdcom.m4dnl pdcom.m4 -- Find the path to PdCom library
dnl $Id$
dnl
dnl This file provides AC_CHECK_PDCOM, which defines the --with-pdcom-dir
dnl command-line option and probes for libpdcom in that directory if it
dnl is used.  
dnl 
dnl If --with-pdcom-dir is not supplied, it probes in the default locations
dnl /usr, /usr/local and /opt/etherlab.
dnl
dnl It then makes sure that libpdcom will link, and exports PDCOM_LDFLAGS, 
dnl PDCOM_CPPFLAGS, and PDCOM_LIBS

AC_DEFUN([AC_CHECK_PDCOM], [

dnl header file to search for
headerfile=pdcom.h

dnl libtool library file to search for
la_libfile=libpdcom.la

dnl usual shared object file and function to search for
so_libfile=pdcom
dnl so_func_search=XML_ParserCreate

dnl define configure command line argument
AC_ARG_WITH([pdcom-dir],
    [AC_HELP_STRING(--with-pdcom-dir=PATH,
        [Path to PdCom installation])],
    [ DIR="$with_pdcom_dir" ],
    [ DIR=]
)

AC_MSG_CHECKING([for $headerfile])
if test "x$DIR" = x; then
    dnl if pdcom-dir was not specified, check default header location
    for dir in /opt/etherlab /usr/local /usr ; do
        dirheader="$dir/include/$headerfile"
        if test -f $dirheader ; then
            found=yes
            local_CPPFLAGS="-I$dir/include"
            AC_MSG_RESULT([$dirheader])
            break
        fi
    done
    if test "x$found" = "x"; then
        AC_MSG_ERROR([$headerfile not found])
    fi
else
    dnl check whether DIR/include contains header. If not, bail out
    if test -f "$DIR/include/$headerfile" ; then
        local_CPPFLAGS="-I$DIR/include"
        AC_MSG_RESULT([$DIR/include/$headerfile])
    else
        AC_MSG_ERROR([Could not find $DIR/include/$headerfile])
    fi
fi

dnl Check for supplied libtool library
if test "x$la_libfile" != x; then
    AC_MSG_CHECKING([for $la_libfile])
    la_LIBS=
    for dir in "$DIR" /opt/etherlab /usr/local /usr; do
        libdir="$dir/$acl_libdirstem"
        lib_la="$libdir/$la_libfile"
        if test -f "$lib_la"; then
            la_LIBS="$lib_la"
            AC_MSG_RESULT([$la_LIBS])
            break;
        fi
    done
    if test "x$la_LIBS" = x; then
         AC_MSG_RESULT(not found)
    fi
fi

if test "x$so_libfile" != x; then
    so_file=lib${so_libfile}.so
    AC_MSG_CHECKING([for $so_file])
    so_LIBS=
    for dir in "$DIR" /opt/etherlab /usr/local /usr; do
        libdir="$dir/$acl_libdirstem"
        lib_so="$libdir/$so_file"
        if test -f "$lib_so"; then
            so_LIBS="-l$so_libfile"
            so_LDFLAGS="-L$libdir -Wl,--rpath -Wl,$libdir"
            AC_MSG_RESULT([$lib_so])
            break;
        fi
    done
    if test "x$so_LIBS" = x; then
         AC_MSG_RESULT(not found)
    fi
fi

dnl if test "x$la_LIBS" != x; then
dnl     local_LIBS="$la_LIBS"
dnl     local_LDFLAGS=
if test "x$so_LIBS" != x; then
    local_LIBS="$so_LIBS"
    local_LDFLAGS=$so_LDFLAGS
else
    AC_MSG_ERROR([could not find library to link to])
fi

PDCOM_CPPFLAGS="$local_CPPFLAGS"
PDCOM_LDFLAGS="$local_LDFLAGS"
PDCOM_LIBS="$local_LIBS"

dnl AC_MSG_NOTICE([
dnl PDCOM_CPPFLAGS = "$PDCOM_CPPFLAGS"
dnl PDCOM_LDFLAGS = "$PDCOM_LDFLAGS"
dnl PDCOM_LIBS = "$PDCOM_LIBS"
dnl ])

AC_SUBST([PDCOM_CPPFLAGS])
AC_SUBST([PDCOM_LDFLAGS])
AC_SUBST([PDCOM_LIBS])

])
0707010000001E000081A400000000000000000000000164B91ACB000002E7000000000000000000000000000000000000002F00000000pdpersistd-1.0.2.9.g8f25669/pdpersistd.service#
# Sample process data persistence daemon service file for systemd.
#
# vim: tw=78 spelllang=en spell
#
# BEFORE USAGE please adapt the ExecStart line to your environment!
#

[Unit]
Description=Process data persistence daemon

#
# Optional: Require and After for real-time application
# This only makes sense, if auto-reconnect is disabled.
#
#Requires=my_rt_app.service
#After=my_rt_app.service

[Service]
Type=simple
ExecStart=/vol/opt/etherlab/bin/pdpersistd --restore /etc/persist.conf

# Standard output and error are directed to syslog() internally.
StandardOutput=null
StandardError=null

#
# Restart should be disabled if auto-reconnect is disabled,
# to avoid duplicate restoring.
#
#Restart=no

[Install]
WantedBy=multi-user.target
0707010000001F000081A400000000000000000000000164B91ACB0000057E000000000000000000000000000000000000002F00000000pdpersistd-1.0.2.9.g8f25669/pdpersistd.spec.in#----------------------------------------------------------------------------
#
#  $Id$
#
#  vim: tw=78 spelllang=en spell
#
#----------------------------------------------------------------------------

Name: @PACKAGE@
Version: @VERSION@
Release: 1

License: GPL-3.0+
URL: http://etherlab.org/en/pdpersistd

Source: http://etherlab.org/download/pdpersistd/%{name}-%{version}.tar.bz2
BuildRoot: /tmp/%{name}-%{version}
BuildRequires: gcc-c++
BuildRequires: pkg-config
BuildRequires: libpdcom1
BuildRequires: pdcom-devel
BuildRequires: libyaml-0-2
BuildRequires: libyaml-devel
BuildRequires: sqlite3
BuildRequires: sqlite3-devel

#----------------------------------------------------------------------------
# Main Package
#----------------------------------------------------------------------------

Summary: Process-data persistence daemon
Group: Productivity/Other

%description
A daemon providing process variable persistence across application reloads.

#----------------------------------------------------------------------------

%prep
%setup

%build
%configure
make

%install
make DESTDIR=${RPM_BUILD_ROOT} install

%clean
rm -rf ${RPM_BUILD_ROOT}

%files
%defattr(-,root,root)
%doc AUTHORS
%doc COPYING
%doc ChangeLog
%doc NEWS
%doc README
%doc persist.conf
%doc initdb.sql
%{_bindir}/pdpersist
%{_bindir}/pdpersistd

#----------------------------------------------------------------------------
07070100000020000081A400000000000000000000000164B91ACB00000CA6000000000000000000000000000000000000002900000000pdpersistd-1.0.2.9.g8f25669/persist.conf#-----------------------------------------------------------------------------
#
# vim: syntax=yaml tw=78 expandtab ts=4
#
# $Id$
#
# pdpersistd sample configuration.
#
#-----------------------------------------------------------------------------

---
database: "persist.db" # Path to database. Can be overridden with
                       # command-line option --database
host: "ctl350"         # Host name or IP address. Can be overridden with
                       # command-line option --host.
port: 2346             # TCP port. Can be overridden with command-line option
                       # --port.

restore: "/Persistence" # Path to an optional restore variable. This variable
                        # is used to determine, if persistent values were
                        # already restored. If (and only if) its value is 0,
                        # variables will be restored. When the restoring takes
                        # place, the value is set to non-zero to avoid
                        # duplicated restoring; thus the variable has to be
                        # writable. If it is non-empty, auto-reconnect takes
                        # place after the connection is lost and the --restore
                        # command-line-argument is ignored.

reconnect: 5 # Seconds to wait before the next connection attempt is made.
             # This setting is only used, if the "restore" setting is set.

keepalive: 10 # begin to send MSR <ping/> commands after
              # nothing is received for the specified time (in seconds)

timeout: 30 # close the connection after nothing is received for the specified
            # time (in seconds). Be sure to have continuous data (not only
            # event-based registrations) or enable keepalive.

variables: # List of persistent variables. Every variable section has to begin
           # with a hyphen (YAML list syntax).

#
# Complete example
#
-
    value: "/system/var"      # Variable to observe. It is queried with
                              # a sample time of 1 s (or event-based if no
                              # continuous subscription possible) and written
                              # to the database, if its value changes.
                              # Mandatory.

write: "/system/offset"   # Write variable. On restore, the stored
                              # value is written to this variable. Default:
                              # Same as 'value' setting.

apply: "/system/applyVar" # Apply event. Variable is incremented
                              # after restore. Default: No apply.

update: 5                 # Minimum write interval in seconds. 0 means to
                              # update only on process shutdown. Variables
                              # with sample time 0 are always stored on
                              # change. Default: 0. Type: (Positive) integer.

stable: true              # Write value only when stable.
                              # Minimum stable time is given via 'update'
                              # setting. Default: false. Type: Boolean.

#
# Simple example; for example to restore a simple parameter
#
- value: "/system/LoadTables/Aux1/tableData"
07070100000021000041ED00000000000000000000000264B91ACB00000000000000000000000000000000000000000000002100000000pdpersistd-1.0.2.9.g8f25669/tool07070100000022000081A400000000000000000000000164B91ACB00000266000000000000000000000000000000000000002D00000000pdpersistd-1.0.2.9.g8f25669/tool/Makefile.am#-----------------------------------------------------------------------------
#
# $Id$
#
#-----------------------------------------------------------------------------

bin_PROGRAMS = pdpersist

pdpersist_SOURCES = \
	Process.cpp \
	main.cpp

pdpersist_CXXFLAGS = \
	-Wall \
	$(YAML_CFLAGS) \
	$(PDCOM_CPPFLAGS) \
	$(SQLITE_CFLAGS)

pdpersist_LDFLAGS = \
	$(PDCOM_LDFLAGS) \
	$(SQLITE_LDFLAGS)

pdpersist_LDADD = \
	$(top_builddir)/common/libcommon.a \
	$(PDCOM_LIBS) \
	$(YAML_LIBS) \
	$(SQLITE_LIBS)

noinst_HEADERS = \
	Process.h

#-----------------------------------------------------------------------------
07070100000023000081A400000000000000000000000164B91ACB00000350000000000000000000000000000000000000002D00000000pdpersistd-1.0.2.9.g8f25669/tool/Process.cpp/*****************************************************************************
 *
 * $Id$
 *
 ****************************************************************************/

#include <iostream>
#include <sstream>
using namespace std;

#include "Process.h"
#include "../common/Variable.h"

/****************************************************************************/

void Process::showVariables()
{
    VariableList::const_iterator v;

for (v = variables.begin(); v != variables.end(); v++) {
        cerr << (*v)->getPath() << endl;
    }
}

/****************************************************************************/

Common::Variable *Process::createVariable(sqlite3 *db,
                const Yaml &config)
{
    return new Common::Variable(db, config);
}

/****************************************************************************/
07070100000024000081A400000000000000000000000164B91ACB00000232000000000000000000000000000000000000002B00000000pdpersistd-1.0.2.9.g8f25669/tool/Process.h/*****************************************************************************
 *
 * $Id$
 *
 ****************************************************************************/

#include "../common/Process.h"

/****************************************************************************/

class Process:
    public Common::Process
{
    public:
        void showVariables();

private:
        // Common::Process
        Common::Variable *createVariable(sqlite3 *, const Yaml &);
};

/****************************************************************************/
07070100000025000081A400000000000000000000000164B91ACB00002E9F000000000000000000000000000000000000002A00000000pdpersistd-1.0.2.9.g8f25669/tool/main.cpp/*****************************************************************************
 *
 *  $Id$
 *
 *  vim: expandtab
 *
 ****************************************************************************/

#include <getopt.h>
#include <libgen.h> // basename()
#include <signal.h>
#include <time.h>

#include <iostream>
#include <iomanip>
#include <sstream>
#include <list>
using namespace std;

#include <sqlite3.h>
#include <pdcom.h>

#include "Process.h"

/*****************************************************************************/

string binaryBaseName;

// option variables
string target; // config file or database
string command;

list<string> regex;
time_t timestamp = time(NULL);

/*****************************************************************************/

struct SnapshotEntry {
    string path;
    time_t time;
    string value;

bool operator<(SnapshotEntry &other) {
        return time < other.time;
    }
};

/*****************************************************************************/

// commands
int show(void);
int history(void);
int query_last(sqlite3 *, int, const string &, PdCom::Data::Type, int,
        time_t, list<SnapshotEntry> *);
int snapshot(void);

/*****************************************************************************/

string usage()
{
    stringstream str;

str << "Usage: " << binaryBaseName
        << " [OPTIONS] <CONFIG> <COMMAND>" << endl
        << endl
        << "Global options:" << endl
        << "  --help       -h              Show this help." << endl
        << "  --regex      -r <REGEX>      Path filter." << endl
        << "  --timestamp  -t <TIMESTAMP>  Timestamp (YYYY-MM-DD HH:MM:SS)."
        << endl
        << endl;

return str.str();
}

/*****************************************************************************/

int getOptions(int argc, char **argv)
{
    int c, argCount;
    stringstream str;
    bool helpRequested = false;

static struct option longOptions[] = {
        //name,       has_arg,           flag, val
        {"help",      no_argument,       NULL, 'h'},
        {"regex",     required_argument, NULL, 'r'},
        {"timestamp", required_argument, NULL, 't'},
        {}
    };

do {
        c = getopt_long(argc, argv, "hr:t:", longOptions, NULL);

switch (c) {
            case 'h':
                helpRequested = true;
                break;

case 'r':
                regex.push_back(optarg);
                break;

case 't':
                {
                    struct tm t = {};

if (!strptime(optarg, "%Y-%m-%d %H:%M:%S", &t)) {
                        cerr << "Failed to parse timestamp " << optarg << "."
                            << endl
                            << usage();
                        return 1;
                    }

timestamp = mktime(&t);
                }
                break;

case '?':
                cerr << endl << usage();
                return 1;

default:
                break;
        }
    }
    while (c != -1);

if (helpRequested) {
        cout << usage();
        return 2;
    }

argCount = argc - optind;
    if (argCount != 2) {
        cerr << binaryBaseName << " takes two arguments:" << endl;
        cerr << usage();
        return 1;
    }

target = argv[optind];
    command = argv[optind + 1];
    return 0;
}

/****************************************************************************/

int main(int argc, char **argv)
{
    int ret;

binaryBaseName = basename(argv[0]);

ret = getOptions(argc, argv);
    if (ret) {
        return ret;
    }

if (command == "show") {
        ret = show();
    } else if (command == "history") {
        ret = history();
    } else if (command == "snapshot") {
        ret = snapshot();
    } else {
        cerr << "Unknown command \"" << command << "\"!" << endl;
        cerr << usage();
        ret = -1;
    }

return ret;
}

/****************************************************************************/

int show(void)
{
    Process process;

try {
        process.readConfig(target);
    } catch (Process::Exception &e) {
        cerr << e.what() << endl;
        return 1;
    }

process.showVariables();
    return 0;
}

/****************************************************************************/

int history(void)
{
    sqlite3 *db;
    int ret, retval = 0;
    sqlite3_stmt *stmt = NULL;
    stringstream sql;
    string sqlStr;

#ifdef SQLITE_OPEN_READWRITE
    ret = sqlite3_open_v2(target.c_str(), &db, SQLITE_OPEN_READONLY, NULL);
#else
    ret = sqlite3_open(target.c_str(), &db);
#endif
    if (ret != SQLITE_OK || !db) {
        cerr << "Failed to open database " << target << "." << endl;
        retval = -1;
        goto out_return;
    }

sql << "select time, value, path, type, size from data, variables"
        << " where data.id = variables.id"
        << " order by time";
    sqlStr = sql.str();
    ret = sqlite3_prepare_v2(db, sqlStr.c_str(), sqlStr.size() + 1,
            &stmt, NULL);
    if (ret != SQLITE_OK) {
        cerr << "Failed to create data query statement '" << sqlStr
            << "': Error code " << ret << ": " << sqlite3_errmsg(db) << endl;
        retval = -1;
        goto out_close;
    }

do {
        ret = sqlite3_step(stmt);

switch (ret) {
            case SQLITE_DONE:
                break;

case SQLITE_ROW:
                {
                    time_t time = sqlite3_column_int(stmt, 0);
                    int blobSize = sqlite3_column_bytes(stmt, 1);
                    const unsigned char *p = sqlite3_column_text(stmt, 2);
                    string path((const char *) p);
                    PdCom::Data::Type type =
                        (PdCom::Data::Type) sqlite3_column_int(stmt, 3);
                    int elementCount = sqlite3_column_int(stmt, 4);
                    int memSize =
                        elementCount * PdCom::Data::getTypeWidth(type);
                    struct tm *tm;
                    char timeStr[31];

if (blobSize != memSize) {
                        cerr << "Query returned invalid data size (blob "
                            << blobSize << ", variable "
                            << memSize << ")!" << endl;
                        retval = -1;
                        goto out_finalize;
                    }
                    const void *d = sqlite3_column_blob(stmt, 1);

tm = localtime(&time);
                    strftime(timeStr, 30, "%Y-%m-%d %H:%M:%S", tm);
                    cout << timeStr << " " << path << endl
                        << "    "
                        << Common::Variable::output(d, type, elementCount)
                        << endl;

}
                break;

default:
                cerr << "Data query returned " << ret << ": "
                    << sqlite3_errmsg(db) << endl;
                retval = -1;
                goto out_finalize;
        }
    } while (ret == SQLITE_ROW);

out_finalize:
    sqlite3_finalize(stmt);
out_close:
    sqlite3_close(db);
out_return:
    return retval;
}

/****************************************************************************/

int snapshot(void)
{
    sqlite3 *db;
    int ret, retval = 0;
    sqlite3_stmt *stmt = NULL;
    stringstream sql;
    string sqlStr;
    list<SnapshotEntry> result;

sql << "select id, path, type, size from variables order by path";
    sqlStr = sql.str();
    ret = sqlite3_prepare_v2(db, sqlStr.c_str(), sqlStr.size() + 1,
            &stmt, NULL);
    if (ret != SQLITE_OK) {
        cerr << "Failed to create data query statement '" << sqlStr
            << "': Error code " << ret << ": " << sqlite3_errmsg(db) << endl;
        retval = -1;
        goto out_close;
    }

do {
        ret = sqlite3_step(stmt);

switch (ret) {
            case SQLITE_DONE:
                break;

case SQLITE_ROW:
                {
                    int id = sqlite3_column_int(stmt, 0);
                    const unsigned char *p = sqlite3_column_text(stmt, 1);
                    string path((const char *) p);
                    PdCom::Data::Type type =
                        (PdCom::Data::Type) sqlite3_column_int(stmt, 2);
                    int elementCount = sqlite3_column_int(stmt, 3);

query_last(db, id, path, type, elementCount, timestamp,
                            &result);

}
                break;

default:
                cerr << "Variable query returned " << ret << ": "
                    << sqlite3_errmsg(db) << endl;
                retval = -1;
                goto out_finalize;
        }
    } while (ret == SQLITE_ROW);

result.sort();

for (list<SnapshotEntry>::const_iterator it = result.begin();
            it != result.end(); it++) {
        struct tm *tm;
        char timeStr[31];

tm = localtime(&it->time);
        strftime(timeStr, 30, "%Y-%m-%d %H:%M:%S", tm);

cout << it->path << endl
            << "  " << timeStr << endl
            << "  "
            << it->value
            << endl;
    }

out_finalize:
    sqlite3_finalize(stmt);
out_close:
    sqlite3_close(db);
out_return:
    return retval;
}

/****************************************************************************/

int query_last(sqlite3 *db, int id, const string &path,
        PdCom::Data::Type type, int elementCount, time_t time,
        list<SnapshotEntry> *result)
{
    int ret, retval = 0;
    sqlite3_stmt *stmt = NULL;
    stringstream sql;
    string sqlStr;
    int memSize = elementCount * PdCom::Data::getTypeWidth(type);

sql << "select time, value from data where time <= " << time
        << " and id = " << id << " order by time desc limit 1";
    sqlStr = sql.str();
    ret = sqlite3_prepare_v2(db, sqlStr.c_str(), sqlStr.size() + 1,
            &stmt, NULL);
    if (ret != SQLITE_OK) {
        cerr << "Failed to create data query statement '" << sqlStr
            << "': Error code " << ret << ": " << sqlite3_errmsg(db) << endl;
        retval = -1;
        goto out_return;
    }

do {
        ret = sqlite3_step(stmt);

switch (ret) {
            case SQLITE_DONE:
                break;

case SQLITE_ROW:
                {
                    time_t time = sqlite3_column_int(stmt, 0);
                    int blobSize = sqlite3_column_bytes(stmt, 1);

SnapshotEntry e;
                    e.path = path;
                    e.time = time;
                    e.value = Common::Variable::output(d, type, elementCount,
                            76, "  ");
                    result->push_back(e);
                }
                break;

out_finalize:
    sqlite3_finalize(stmt);
out_return:
    return retval;
}

/****************************************************************************/
07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!315 blocks

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File _service:obs_scm:pdpersistd-1.0.2.9.g8f25669.obscpio of Package PdPersistd (Revision 9377982cf9b7b26074bc6fb4dc3f5429)

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