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Continuous integration with Jenkins
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===================================
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Preparing a GIT mirror
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----------------------
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Jenkins cannot currently work with Git over encrypted HTTP. To solve this
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problem we currently mirror the central Git repository locally on the jenkins
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installation machine. To setup such a mirror do the following:
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-edit .netrc
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machine code.grnet.gr
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login accountname
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password accountpasswd
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-Create the mirror
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git clone --mirror https://code.grnet.gr/git/synnefo synnefo
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-Setup cron to pull from the mirror periodically. Ideally, Git mirror updates
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should run just before Jenkins jobs check the mirror for changes.
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4,14,24,34,44,54 * * * * cd /path/to/mirror && git fetch && git remote prune origin
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Jenkins setup
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-------------
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The following instructions will setup Jenkins to run synnefo tests with the
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SQLite database. To run the tests on MySQL and/or Postgres, step 5 must be
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replicated. Also, the correct configuration file must be copied (line 6 of the
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build script).
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1. Install and start Jenkins. On Debian Squeeze:
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   wget -q -O - http://pkg.jenkins-ci.org/debian/jenkins-ci.org.key | apt-key add -
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   echo "deb http://pkg.jenkins-ci.org/debian binary/" >>/etc/apt/sources.list
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   echo "deb http://ppa.launchpad.net/chris-lea/zeromq/ubuntu lucid main" >> /etc/apt/sources.list
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   sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys C7917B12  
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   sudo apt-get update
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   sudo apt-get install jenkins
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   Also install the following packages:
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   apt-get install python-virtualenv libcurl3-gnutls libcurl3-gnutls-dev
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                   uuid-dev libmysqlclient-dev libpq-dev libsqlite-dev
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                   python-dev libzmq-dev
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2. After Jenkins starts, go to
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   http://$HOST:8080/pluginManager/
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   and install the following plug-ins at
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   -Jenkins Cobertura Plugin
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   -Jenkins Email Extension Plugin
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   -Jenkins GIT plugin
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   -Jenkins SLOCCount Plug-in
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   -Hudson/Jenkins Violations plugin
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3. Configure the Jenkins user's Git details:
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   su jenkins
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   git config --global user.email "buildbot@lists.grnet.gr"
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   git config --global user.name "Buildbot"
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4. Make sure that all system-level dependencies specified in README.develop
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   are correctly installed
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5. Create a new "free-style software" job and set the following values:
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-Project name: synnefo
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-Source Code Management: Git
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-URL of repository: Jenkins Git does not support HTTPS for checking out directly
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                    from the repository. The temporary solution is to checkout
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                    with a cron script in a directory and set the checkout path
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                    in this field
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-Branches to build: master and perhaps others
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-Git->Advanced->Local subdirectory for repo (optional): synnefo
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-Git->Advanced->Prune remote branches before build: check
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-Repository browser: redmineweb,
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                     URL: https://code.grnet.gr/projects/synnefo/repository/
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-Build Triggers->Poll SCM: check
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                 Schedule: # every five minutes
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			   0,5,10,15,20,25,30,35,40,45,50,55 * * * * 
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-Build -> Add build step-> Execute shell
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Command:
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#!/bin/bash -ex
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cd synnefo
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mkdir -p reports
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/usr/bin/sloccount --duplicates --wide --details api util ui logic auth > reports/sloccount.sc
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cp conf/ci/manage.py .
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if [ ! -e requirements.pip ]; then cp conf/ci/pip-1.2.conf requirements.pip; fi
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cat settings.py.dist conf/ci/settings.py.sqlite > settings.py
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python manage.py update_ve
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python manage.py hudson api db logic 
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-Post-build Actions->Publish JUnit test result report: check
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                     Test report XMLs: synnefo/reports/TEST-*.xml
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-Post-build Actions->Publish Cobertura Coverage Report: check
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                     Cobertura xml report pattern: synnefo/reports/coverage.xml
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-Post-build Actions->Report Violations: check
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                     pylint[XML filename pattern]: synnefo/reports/pylint.report
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-Post-build Actions->Publish SLOCCount analysis results
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                     SLOCCount reports: synnefo/reports/sloccount.sc
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                     (also, remember to install sloccount at /usr/bin)
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---------------
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See also:
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http://sites.google.com/site/kmmbvnr/home/django-hudson-tutorial