Jenkins continuous integration server: Difference between revisions

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{{Navigation for Stendhal Top}}
{{Navigation for Stendhal Top|Developing}}
{{Navigation for Stendhal Developers}}
{{Navigation for Stendhal Developers}}


'''''NOTE:''' the project no longer used Jenkins'' - [[User:AntumDeluge|AntumDeluge]] ([[User talk:AntumDeluge|talk]])
[http://hudson.dev.java.net Hudson] is an extensible continuous integration server. You can have a look at our current hudson server with several build jobs for Stendhal, Marauroa and Marboard [http://stendhal.game-host.org/hudson/ here].

Jenkins is an extensible continuous integration server. Some developers use local Jenkins instances for building Stendhal and Marauroa.

In production we don't use Jenkins, but [https://travis-ci.org/arianne/ Travis].

==Installation==
==Installation==
To install and run Hudson you just need to download the hudson.war from the hudson web site and have java ready. To start the server you need a small start script that issues the following command:
To install and run Jenkins you just need to download the <code>jenkins.war</code> from the Jenkins web site and have Java ready. To start the server you need a small start script that issues the following command:
java -jar hudson.war
java -jar jenkins.war
Once the hudson is started, you can reach the user interface via your favourite browser if you open the following URL (assuming you have hudson on the same machine as your browser):
Once Jenkins is started, you can reach the user interface via your favourite browser if you open the following URL (assuming you have Jenkins on the same machine as your browser):
http://localhost:8080
http://localhost:8080
If you see the hudson interface loading, you have successfully installed hudson.
If you see the Jenkins interface loading, you have successfully installed Jenkins.


==Configuration for Stendhal==
==Configuration for Stendhal==
To let hudson build stendhal you have to match the following prerequesites:
To let Jenkins build Stendhal you have to match the following prerequisites:
* ANT installed on the same system
* ANT installed on the same system
* JDK 7 installed
* JDK1.5 installed (already matched if you were successfully running hudson, as it needs java to run)
* CVS-Client installed
* Git installed


Here is a list of Jenkins plugins that you may want to install via the Jenkins configuration. You can see what each plugin does, if you have a look at onto the wiki at the Jenkins homepage.
⚫
In the main configuration you have to tell hudson where it can find all necessary things.
* [https://wiki.jenkins-ci.org/display/JENKINS/Git+Plugin Git Plugin]
** if you want to build from a Git repository
* [https://wiki.jenkins-ci.org/display/JENKINS/File+System+SCM File System SCM Plugin]
** if you want to build directly from the working copy (without committing)
* [https://wiki.jenkins-ci.org/display/JENKINS/Xvnc+Plugin Xvnc Plugin]
** You may want to install this if some tests that depend on Swing fail with an error like ''«No X11 DISPLAY variable was set, but this program performed an operation which requires it»'' (see http://stackoverflow.com/q/12533339/479288).

Other plugins to try:
* [http://wiki.jenkins-ci.org/display/JENKINS/Audit+Trail+Plugin Audit Trail]
* [http://wiki.jenkins-ci.org/display/JENKINS/Checkstyle+Plugin Checkstyle Plugin]
<!--* [http://jenkins.gotdns.com/wiki/display/JENKINS/Crap4J+Plugin Jenkins Crap4J plugin]-->
<!--* [http://wiki.jenkins-ci.org/display/JENKINS/Emma+Plugin Jenkins Emma plugin]-->
* [http://wiki.jenkins-ci.org/display/JENKINS/Emotional+Jenkins+Plugin Emotional Jenkins plugin]
* [http://wiki.jenkins-ci.org/display/JENKINS/FindBugs+Plugin FindBugs Plugin]
* [http://wiki.jenkins-ci.org/display/JENKINS/Task+Scanner+Plugin Task Scanner Plugin]
* [http://wiki.jenkins-ci.org/display/JENKINS/Warnings+Plugin Warnings Plugin]
* [http://wiki.jenkins-ci.org/display/JENKINS/Green+Balls Green Balls]
* [http://wiki.jenkins-ci.org/display/JENKINS/Claim+Plugin Claim Plugin]
* [http://wiki.jenkins-ci.org/display/JENKINS/The+Continuous+Integration+Game+plugin The Continuous Integration Game plugin]

⚫
In the main configuration you have to tell Jenkins where it can find all necessary things.


At every configurable point is a small help to tell what to configure here.
At every configurable point is a small help to tell what to configure here.
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==Setup a build job for Stendhal==
==Setup a build job for Stendhal==


The next steps show, how to configure a basic build job for stendhal.
The next steps show how to configure a basic build job for Stendhal.


===Source Code Management System===
===Source Code Management===

Just select CVS and configure the following parameters:
==== Build from Git ====
* CVS-Root

:* :pserver:anonymous@arianne.cvs.sourceforge.net:/cvsroot/arianne
To build from Git, you need to have the [https://wiki.jenkins-ci.org/display/JENKINS/Git+Plugin Git plugin] installed. Just select Git and configure the following parameters:
* Module
* Repository URL
:* stendhal
:* <code>file:///your/path/to/stendhal</code>
* Branch
:* leave this empty if you want to build HEAD.
* Branches to build
:* leave this empty if you want to build HEAD.
:* or choose a branch name to build
:* or choose a branch name to build

==== Build from the working copy ====

To build from the working copy:
* have the [https://wiki.jenkins-ci.org/display/JENKINS/File+System+SCM File System SCM] plugin installed
* select "File System" from "Source Code Management"
* Path: <code>/your/path/to/stendhal</code>


===Build Trigger===
===Build Trigger===

Here you configure, when a build is started. Our current way of triggering builds is triggered from CVS at a certain time. This means not, the CVS tells hudson to start a build, but it tells hudson to check regularly the CVS for changes and builds, when there were commits since last build.
Here you configure when a build is started. A possible way is triggering from Git at a certain time. This doesn't mean that Git tells Jenkins to start a build, but it tells Jenkins to check regularly on Git for changes and builds, when there were commits since the last build.


You also can start build at certain times not regarding changes since last build.
You also can start build at certain times not regarding changes since last build.


For both of this options you have to provide a cron like notation, when to check/build. At the moment, we check every day at 5 am and build then.
For both of this options you have to provide a cron like notation, when to check/build. For example, you could check every day at 5 am and build then.

The other options allow it to start a build via URL or let a build start, if another build was finished.


===Build Steps===
===Build Steps===
To build Stendhal with hudson, we just execute three targets from the standard build.xml included in stendhal source code. We let hudson first call ''clean run_tests_with_cobertura''. This first cleans the workspace and starts a complete build including coverage measurement. Afterwards we start ''java_doc'' which generates a fresh api documentation from stendhal.
To build Stendhal with Jenkins, we just execute three targets from the standard <code>build.xml</code> included in Stendhal source code. We let Jenkins first call <code>clean test</code>. This first cleans the workspace and starts a complete build including coverage measurement. Afterwards we start <code>docs</code> which generates a fresh API documentation from Stendhal.


===Post Build Processing===
===Post Build Processing===
After a build was successful certain steps follow to produce those nice looking reports and graphics. For stendhal we use several reports to publish.
After a build was successful certain steps follow to produce those nice looking reports and graphics. For Stendhal we use several reports to publish.
* Publish Javadoc
* java doc
:* check this option to publish the generated java docs
:* check this option to publish the generated Java docs
:* provide ''api'' as directory for the docs
:* provide ''api'' as directory for the docs
* junit test results
* Publish JUnit test result report
:* check this option to publish the results
:* check this option to publish the results
:* provide ''build/build_test_report/testresults.xml'' as location for the junit report in xml format
:* provide <code>**/build/build_test_report/testresults.xml</code> as location for the JUnit report in XML format
* Record JaCoCo coverage report
* cobertura
:* this option allows us to publish the results of the test coverage
:* this option allows us to publish the results of the test coverage
:* provide ''build/cobertura_report/*.xml'' as report file
:* provide <code>**/build/build_server</code> as ''Path to class directories''
:* provide <code>**/src</code> as ''Path to source directories''
* To do report
* To do report
* Warnings
* Warnings

==Known Problems==
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