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Activiti Developers Guide

GIT pointers

Currently there is a GIT repository fork from SVN, for experimental purposes. If you prefer to use GIT let Tom know and we can take that into account when deciding whether to stick with it.

To use GIT as a committer you will probably want to use ssh to authenticate automatically. Codehaus requires DSA tokens (not RSA) so you may need to create those first:

$ ssh-keygen -t dsa
... <accept the defaults>

Ensure that your ~/.ssh directory is only readable by you (chmod 700 ~/.ssh should do it). You will also probably need a ~/.ssh/config that contains these lines:

Typical initial setup:

$ git config --global "My Name"
$ git config --global
$ git config --global core.autocrlf input
# All the --global above can be set locally if you prefer
$ git clone ssh:// activiti
$ cd activiti
$ git branch -a
... (list of branches)

There are plenty of online resources for git. A good one is Pro Git. IntelliJ has good IDE support. Eclipse has some very active development in EGit, but only basic features currently (things are moving very fast). Most people find gitk or gitx (Mac only) very useful for visualization (launch with --all for best results).

As a rule with GIT you do not make changes directly to remote branches, but rather you create your own local branch and merge changes from there to the remote branch (via a local mirror).  Typical workflow

# create a new local branch to work from
$ git checkout -b feature/my-new-idea

# edit source code...
$ git status
... (list of changes)

# add all your changes to local index (N.B. -A might not always be appropriate)
$ git add -A .

# commit locally
$ git commit -m "My nice changes"

Keep doing that until you are happy. If you want to tidy up your commits and send them as a batch instead of individual changes look at git rebase -i .... Now you are ready to share your work. If you want to stay on a branch and collaborate with someone, push up your branch

# if it is new:
$ git push origin feature/my-new-idea

# if you already shared it
$ git push

To checkout someone else's remote branch for collaboration:

# Make sure you have all the remote changes
$ git fetch

# Or just make sure the branch is there
$ git branch -a

# Checkout the branch
$ git checkout origin/feature/my-new-idea

When you are ready to merge with the remote master (dev trunk):

# get changes from remote repository
$ git fetch

# merge changes onto master (= dev trunk for everyone else)
$ git checkout master
$ git merge origin/master

# merge master onto your features (assuming you are ready to try and push it
# up to the remote repository)
$ git merge feature/my-new-idea

# push changes up to remote repository and move back to local branch to
# continue work
$ git push
$ git checkout feature/my-new-feature

# optionally rebase to keep history clean
$ git rebase master

There are many combinations of commands that achieve the same end result as that last sequence. Your preferred workflow might be different, and of course any time there are conflicts it will have to change (GIT is quite good at telling you what it thinks is wrong in a conflict).

Building the sources


JDK 5+ : Make sure that you do not use code constructs that require JDK 6 or higher.
Maven 2.0.9
Ant 1.7.1

Running tests before commit

Before a checkin is done, a developers should make sure to update to the latest sources and then run
mvn -Pcheck clean install
in the root activiti directory

Demo setup

To run smoke tests on webapps, the quickest way to get started is using the target test.demo.setup in qa/build.xml
That will also startup h2 and tomcat. So to rebuild, you can use the target test.demo.setup.refresh That target will first shutdown tomcat and h2 and then do a full new demo test setup.
Building the javadocs

Use target build.javadocs in qa/build.xml

Building a distribution

To build a distribution, run target distro of build file distro/build.xml
User scripts

After an distribution is unzipped (or directly in the distro/target/activiti-version directory), a number of scripts are offered to our users as well. Those scripts can be found in [activiti.home]/setup/build.xml [user.home]/.activiti/  As an example, here's the content of my[user.home]/.activiti/

activiti.home, is used in the setup/build.xml. It will work straight from the sources. So you can add the setup from the sources to your ant view in your IDE.

downloads.dir, is used in the setup/build.xml. It allows you to configure a custom location for your directory to download/find tomcat. If you don't specify this, the default is relative to the setup directory (../downloads). So if you use the setup/build from the sources, you might end up downloading tomcat into your sources. If that still would happen, don't check it in! (wink)
tomcat.enable.debug is used in setup/build.xml when tomcat is installed. if the property is specified (whatever value), the following line will be added at the beginning of the
JAVA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8787"
skip.deploy.activiti.modeler=true set this property if the activiti modeler fetching from net and deployment must be skipped.
Unless before a release or explicitely working on Signavio, it's advised to set this property since sometimes a version matching the current trunk version isn't uploaded yet, causing the demo setup to fail.
mvn.executable=mvn.bat on windows you have to set this property to make the calls from the ant build scripts (distro/build.xml and qa/build.xml) to maven work.

[user.home]/.activiti/tomcat-users.xml To enable the automatic redeployment targets in qa/build.xml, put a tomcat-users.xml in your [user.home]/.activiti directory with the following content:


Build file qa/build.xml contains a number of targets for driving the QA. It also contains convenience targets for developers to do integration testing.

Test suite modules

The test suites in the maven modules have a specific purpose.  Some modules only consist of test suites.  If you're writing or searching for a certain test, this section should give an indication in which module a test belongs.

Maven module

Description of the tests in that module


Engine implementation tests


These are the examples that are explained in the userguide.  For each new feature,
a test should be included in the examples with the primary purpose of demonstrating
the feature.  This test suite is included in all continuous integration test runs.  That's why
it's important that tests in this module don't use a custom configuration.  The CI test runs
will overwrite the default configuration file


More advanced testing of features targetted to run in all continuous integration test runs.
That's why it's important that tests in this module don't use a custom configuration.  The
CI test runs will overwrite the default configuration file.   The concept of this test suite is 
inspired by a CTK (Compatibility Test Kit).  Tests in this module should aim to only use 
public API.


Contains tests that involve configuration changes.  These tests are not run on a matrix 
of DB's and server environments.

So the continuous integration test runs should execute test suites activiti-examples and activiti-engine-test-api


As much as possible try to group all related changes into single commits. 

Before committing, run the following check to see if all is OK.

In the commit message, start with the jira issue, a space and then the commit text like in this example

Eclipse IDE Setup

You'll need to install the maven and svn plugins.

In the "Galileo -" update site, which should be available automatically, install "Collaboration --> Subversibe SVN Team provider". After rebooting and adding an SVN repository, you'll be asked automatically to install one of the polarion connectors for SVN. Just take the latest version of the polarion connectors. In case that doesn't happen automatically install a polarion connector manually from "Subversive SVN Connectors Site"

Install the maven plugins from

First check out the activiti root from svn as one project. Then import existing projects and navigate to the modules directory. All the module projects should then be found and can be imported in one go.

in the eclipse directory of the root activiti source directory are some files that should be imported as eclipse preferences. The filenames indicate the dialog that can be used to import them.

Debugging ant task


See activiti - signavio rebranding

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