TASKPM/HACKING.rst

Hacking
=======

This is a guide about how to start hacking on *LibrePlan* project. If you want
more information about *LibrePlan* development you should visit the wiki
available at: http://wiki.libreplan.org/.

.. contents::


Compilation requirements
------------------------

* *Git* - Version Control System

  Needed to clone source code repository

* *Maven 2* - Java software project management and comprehension tool

  Needed to build and compile the project

* *JDK 6* - Java Development Kit

  Project depends on Java 6 and JDK is needed in order to compile it

* *PostgreSQL* - Object-relational SQL database

  Database server

* *Python Docutils* - Utilities for the documentation of Python modules

  Used to generate HTMLs help files from RST files (reStructuredText)

* *Make* - An utility for Directing compilation

  Needed to compile the help

* *gettext* - GNU Internationalization utilities

  Used for i18n support in the project

* *CutyCapt* - Utility to capture WebKit's rendering of a web page

  Required for printing


LibrePlan compilation
---------------------

Debian/Ubuntu
~~~~~~~~~~~~~

* Install requirements::

    # apt-get install git-core maven2 openjdk-6-jdk postgresql postgresql-client python-docutils make gettext cutycapt

* Connect to database::

    # su postgres -c psql

* Use SQL sentences::

    CREATE DATABASE libreplandev;
    CREATE DATABASE libreplandevtest;
    CREATE USER libreplan WITH PASSWORD 'libreplan';
    GRANT ALL PRIVILEGES ON DATABASE libreplandev TO libreplan;
    GRANT ALL PRIVILEGES ON DATABASE libreplandevtest TO libreplan;

* Download source code::

    $ git clone git://github.com/Igalia/libreplan.git

* Compile project::

    $ cd libreplan/
    $ mvn clean install

* Launch application::

    $ cd libreplan-webapp/
    $ mvn jetty:run

* Go to http://localhost:8080/libreplan-webapp/

Fedora
~~~~~~

* Install requirements::

    # yum install git maven java-1.7.0-openjdk-devel postgresql postgresql-server python-docutils make gettext gnu-free-fonts-compat

.. WARNING:: Use the following command in Fedora 16 or below::

               # yum install git maven java-1.6.0-openjdk postgresql postgresql-server python-docutils make gettext gnu-free-fonts-compat

* Start database service::

    # su - postgres -c "PGDATA=/var/lib/pgsql/data initdb"
    # systemctl start postgresql.service

.. WARNING:: Use the following commands in Fedora 16 or below::

               # service postgresql initdb
               # service postgresql start

* Connect to database::

    # su postgres -c psql

* Use SQL sentences::

    CREATE DATABASE libreplandev;
    CREATE DATABASE libreplandevtest;
    CREATE USER libreplan WITH PASSWORD 'libreplan';
    GRANT ALL PRIVILEGES ON DATABASE libreplandev TO libreplan;
    GRANT ALL PRIVILEGES ON DATABASE libreplandevtest TO libreplan;

* Set ``postgres`` user password::

    ALTER USER postgres WITH PASSWORD 'postgres';

.. WARNING:: These steps are only for Fedora 16 and below:

               * Edit ``/var/lib/pgsql/data/pg_hba.conf`` and replace ``ident`` by ``md5``

               * Reload database configuration::

                 # service postgresql reload

* Download source code::

    $ git clone git://github.com/Igalia/libreplan.git

* Compile project::

    $ cd libreplan/
    $ mvn clean install

* Launch application::

    $ cd libreplan-webapp/
    $ mvn jetty:run

* Go to http://localhost:8080/libreplan-webapp/

openSUSE
~~~~~~~~

* Install requirements::

    # zypper install git-core java-1_6_0-openjdk-devel postgresql-server postgresql docutils make gettext-tools

* Install Maven::

    # cd /opt/
    # wget http://www.apache.org/dist//maven/binaries/apache-maven-2.2.1-bin.tar.gz
    # tar -xzvf apache-maven-2.2.1-bin.tar.gz

  Edit ``/etc/bash.bashrc.local`` and add the following lines::

    export M2_HOME=/opt/apache-maven-2.2.1
    export M2=$M2_HOME/bin
    export PATH=$M2:$PATH

* Start database service::

    # /etc/init.d/postgresql start

* Connect to database::

    # su postgres -c psql

* Use SQL sentences::

    CREATE DATABASE libreplandev;
    CREATE DATABASE libreplandevtest;
    CREATE USER libreplan WITH PASSWORD 'libreplan';
    GRANT ALL PRIVILEGES ON DATABASE libreplandev TO libreplan;
    GRANT ALL PRIVILEGES ON DATABASE libreplandevtest TO libreplan;

* Set ``postgres`` user password::

    ALTER USER postgres WITH PASSWORD 'postgres';

* Edit ``/var/lib/pgsql/data/pg_hba.conf`` and replace ``ident`` by ``md5``

* Restart database service::

    # /etc/init.d/postgresql restart

* Download source code::

    $ git clone git://github.com/Igalia/libreplan.git

* Compile project::

    $ cd libreplan/
    $ mvn clean install

* Launch application::

    $ cd libreplan-webapp/
    $ mvn jetty:run

* Go to http://localhost:8080/libreplan-webapp/


CutyCapt compilation
--------------------

Like *CutyCapt* is not packaged for all distributions here are the instructions.

Ubuntu/Debian
~~~~~~~~~~~~~

* Install requirements::

    # apt-get install subversion libqt4-dev libqtwebkit-dev qt4-qmake g++ make

  In Ubuntu Lucid 10.04 remove ``libqtwebkit-dev`` package.

* Download source code::

    $ svn co https://cutycapt.svn.sourceforge.net/svnroot/cutycapt cutycapt

* Compile::

    $ cd CutyCapt
    $ qmake CutyCapt.pro
    $ make

* Install::

    # cp CutyCapt /user/bin/cutycapt

Fedora
~~~~~~

* Install requirements::

    # yum install subversion qt-devel qt-webkit-devel gcc-c++ make

* Download source code::

    $ svn co https://cutycapt.svn.sourceforge.net/svnroot/cutycapt cutycapt

* Compile::

    $ cd cutycapt/CutyCapt
    $ qmake-qt4 CutyCapt.pro
    $ make

* Install::

    # cp CutyCapt /user/bin/cutycapt

openSUSE
~~~~~~~~

* Install requirements::

    # zypper install subversion libqt4-devel libQtWebKit-devel gcc-c++ make

* Download source code::

    $ svn co https://cutycapt.svn.sourceforge.net/svnroot/cutycapt cutycapt

* Compile::

    $ cd cutycapt/CutyCapt
    $ qmake-qt4 CutyCapt.pro
    $ make

* Install::

    # cp CutyCapt /user/bin/cutycapt


Compilation profiles
--------------------

There are different compilation profiles in *LibrePlan*. Check ``<profiles>``
section in root ``pom.xml`` to see the different profiles (there are also some
profiles defined in ``pom.xml`` of business and webapp modules).

* *dev* - Development environment (default)

  It uses databases ``libreplandev`` and ``libreplandevtest``.

* *prod* - Production environment

  Unlike *dev* it uses database ``libreplanprod`` and `libreplanprodtest``.

  It is needed to use it in combination with *postgresql* or *mysql* profiles.

  This is usually used while testing the stable branch in the repository. This
  allows developers to easily manage 2 different databases one for last
  development in master branch and another for bugfixing over stable branch.

* *postgresql* - PostgreSQL database (default)

  It uses PostgreSQL database server getting database names from *dev* or *prod*
  profiles.

* *mysql* - MySQL database

  It uses MySQL database server getting database names from *dev* or *prod*
  profiles.

* *reports* - JasperReports (default)

  If it is active *LibrePlan* reports are compiled.

  It is useful to disable this profile to save compilation time during
  development.

* *userguide* - User documentation (default)

  If it is active *LibrePlan* help is compiled and HTML files are generated.

  User documentation is written in *reStructuredText* and it is generated
  automatically thanks to this profile.

  Like for *reports*, it is useful deactivate this profile during development
  to save compilation time.

* *liquibase-update* - Liquibase update (default)

  If it is active Liquibase changes are applied in the database.

* *liquibase-updatesql* - Liquibase update SQL

  If it is active it is generated a file with SQL sentences for Liquibase
  changes needed to apply on database.

  This is used to generate upgrade files in releases.

* *i18n* - Internationalization (default)

  It uses gettext to process language files in order to be used in *LibrePlan*.

  Like for *reports* and *userguide*, it is useful deactivate this profile
  during development to save compilation time.

How to use profiles
~~~~~~~~~~~~~~~~~~~

Profiles active by default are used always if not deactivated. In order to
activate or deactivate a profile you should use parameter ``-P`` for Maven
command. For example:

* Deactivate *reports*, *userguide* and *i18n* to save compilation time::

    mvn -P-reports,-userguide,-i18n clean install

* Use production environment::

    mvn -Pprod,postgresql clean install


Compilation options
-------------------

In LibrePlan there are two custom Maven properties, which allow you to configure
some small bits in the project.

* *default.passwordsControl* - Warning about default passwords (``true`` by
  default)

  If this option is enabled, a warning is show in LibrePlan footer to
  application administrators in order to change the default password (which
  matches with user login) for the users created by default: admin, user,
  wsreader and wswriter.

* *default.exampleUsersDisabled* - Disable default users (``true`` by default)

  If true, example default users such as user, wsreader and wswriter are
  disabled. This is a good option for production environments.

  This option is set to ``false`` if you are using the development profile (the
  default one).

How to set compilation options
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Maven properties have a default value, but you can change it using the parameter
``-D`` for Maven command to set the value of each option you want to modify. For
example:

* Set *default.passwordsControl* to ``false``::

    mvn -Ddefault.passwordsControl=false clean install

* Set *default.passwordsControl* and *default.exampleUsersDisabled* to false::

    mvn -Ddefault.passwordsControl=false -Ddefault.exampleUsersDisabled=false clean install


Tests
-----

*LibrePlan* has a lot of JUnit test that by default are passed when you compile
the project with Maven. You can use ``-DskipTests`` to avoid tests are passed
always. Anyway, you should check that tests are not broken before sending or
pushing a patch.

::

  mvn -DskipTests clean install


MySQL
-----

For MySQL users here are specific instructions.

* SQL sentences to create database::

    CREATE DATABASE libreplandev;
    CREATE DATABASE libreplandevtest;
    GRANT ALL ON libreplandev.* to 'libreplan'@'localhost' identified by 'libreplan';
    GRANT ALL ON libreplandevtest.* to 'libreplan'@'localhost' identified by 'libreplan';

* Compile project::

    $ mvn -Pdev,mysql clean install

* Launch application::

    $ cd libreplan-webapp/
    $ mvn -Pdev,mysql jetty:run