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<td id="header-avatar-image-container" valign="top" style="padding: 0px; border-collapse: collapse; vertical-align: top; width: 32px; padding-right: 9px"><a href="https://wiki.asterisk.org/wiki/display/~mjordan?src=email" style="color: #3b73af; text-decoration: none"><img id="header-avatar-image" class="image_fix" src="cid:avatar_3d2c14e840de74854ca4fe85407aea2d" height="32" width="32" border="0" style="border-radius: 3px; vertical-align: top" /></a></td>
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<tbody>
<tr>
<td id="page-title-pattern-icon-image-container-cell" style="padding: 0px; border-collapse: collapse; width: 16px; padding: 9px 8px 0px 0px; mso-text-raise: 5px; mso-line-height-rule: exactly"><a href="https://wiki.asterisk.org/wiki/display/AST/Continuous+Integration?src=email" title="page icon" style="vertical-align: top;; color: #3b73af; text-decoration: none"><img style="vertical-align: top; display: block;" src="cid:page-icon" alt="page icon" title="page icon" height="16" width="16" border="0" /></a></td>
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</tr>
</tbody>
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<h1 id="ContinuousIntegration-Overview" style="margin: 10px 0 0 0; margin-top: 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0; margin-top: 0">Overview</h1>
<h2 id="ContinuousIntegration-Zuul" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0; margin-top: 10px"> <span class="diff-html-removed" id="removed-diff-0" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">Zuul</span> </h2>
<h2 id="ContinuousIntegration-Jenkins" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">Jenkins</span> </h2>
<p style="margin: 10px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;"> </span> </p>
<p style="margin: 10px 0 0 0"> <span class="diff-html-added" id="added-diff-0" style="font-size: 100%; background-color: #ddfade;">For a long time, the Asterisk project has used continuous integration as a means to verify patches made to the project. This page serves to document the infrastructure used to support these activities.</span> </p>
<p style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Users who are here as a result of a failed test (typically noted on a code review by the 'zuul' user) should read the section "</span><a href="#ContinuousIntegration-fixing_patch" style="color: #3b73af; text-decoration: none"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">What To Do When Your Patch Fails</span></a><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">."</span> </p>
</div> </td>
<td valign="top" width="30%" class="cell aside" data-type="aside" style="padding: 0px; border-collapse: collapse">
<div class="innerCell">
<table class="diff-macro" style="background-color: #f0f0f0;border: 1px solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
<thead>
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<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB/5639/a252d7f5e75d7a8bf7047b4b2c92f71a56a8f048.48/_/images/icons/macrobrowser/dropdown/panel.png" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Panel</th>
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<td class="diff-macro-properties" style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;padding: 0; border: 1px solid #dddddd;; padding: 0px; border-collapse: collapse">
<table style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
<tbody>
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<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse">title</td>
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse">On This Page</td>
</tr>
</tbody>
</table> </td>
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<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding: 10px;; padding: 0px; border-collapse: collapse"> <p style="margin: 10px 0 0 0; margin-top: 0"></p>
<table class="diff-macro bodyless" style="background-color: #f0f0f0;border: 1px solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;margin: 5px 0; padding: 0; width: auto;; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
<thead>
<tr>
<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB/5639/a252d7f5e75d7a8bf7047b4b2c92f71a56a8f048.48/_/images/icons/macrobrowser/dropdown/toc.png" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Table of Contents</th>
</tr>
</thead>
</table> <p style="margin: 10px 0 0 0"></p> </td>
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</div> </td>
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<table width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
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<td valign="top" class="cell normal" data-type="normal" style="padding: 0px; border-collapse: collapse">
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<h1 id="ContinuousIntegration-AutomatedTesting" style="margin: 10px 0 0 0; margin-top: 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0; margin-top: 0"> <span class="diff-html-removed" id="removed-diff-1" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">Automated Testing</span> </h1>
</div> </td>
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<table width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
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<td valign="top" class="cell normal" data-type="normal" style="padding: 0px; border-collapse: collapse">
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<h1 id="ContinuousIntegration-Testing" style="margin: 10px 0 0 0; margin-top: 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0; margin-top: 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;">Testing</span> </h1>
<p style="margin: 10px 0 0 0"> <span class="diff-html-removed" style="font-size: 100%; background-color: #ffe7e7; text-decoration: line-through;"> </span> </p>
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<table width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
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<td valign="top" class="cell normal" data-type="normal" style="padding: 0px; border-collapse: collapse">
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<h1 id="ContinuousIntegration-Infrastructure" style="margin: 10px 0 0 0; margin-top: 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0; margin-top: 0"> <span class="diff-html-added" id="added-diff-1" style="font-size: 100%; background-color: #ddfade;">Infrastructure</span> </h1>
<p style="margin: 10px 0 0 0"></p>
<table class="diff-macro bodyless diff-html-added" style="background-color: #f0f0f0;border: 1px solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;margin: 5px 0; padding: 0; width: auto;background-color: #ddfade;border-color: #93c49f;; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
<thead>
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<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB/5639/a252d7f5e75d7a8bf7047b4b2c92f71a56a8f048.48/_/plugins/servlet/confluence/placeholder/macro-icon?name=gliffy" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Gliffy Diagram</span></th>
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<tbody>
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<td class="diff-macro-properties" style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;padding: 0; border: 1px solid #dddddd;; padding: 0px; border-collapse: collapse">
<table style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
<tbody>
<tr>
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"></td>
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"></td>
</tr>
<tr>
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">name</span></td>
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Gerrit-Zuul-Jenkins</span></td>
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<p style="margin: 10px 0 0 0"></p>
<h2 id="ContinuousIntegration-Gerrit" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Gerrit</span> </h2>
<p style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">While Gerrit does not actually perform continuous integration, it is the initiator of all CI tasks. </span><a href="#ContinuousIntegration-zuul" style="color: #3b73af; text-decoration: none"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Zuul</span></a><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"> monitors the Gerrit server's events and, if an event matches a set of criteria, a new CI task is initiated.</span> </p>
<h2 id="ContinuousIntegration-zuulZuul" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0">
<table class="diff-macro bodyless diff-html-added" style="background-color: #f0f0f0;border: 1px solid #dddddd;margin: 10px 1px;padding: 0 2px 2px;width: 100%;margin: 5px 0; padding: 0; width: auto;background-color: #ddfade;border-color: #93c49f;; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
<thead>
<tr>
<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB/5639/a252d7f5e75d7a8bf7047b4b2c92f71a56a8f048.48/_/images/icons/macrobrowser/dropdown/anchor.png" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Anchor</span></th>
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<tbody>
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<td class="diff-macro-properties" style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;padding: 0; border: 1px solid #dddddd;; padding: 0px; border-collapse: collapse">
<table style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; color: #333">
<tbody>
<tr>
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"></td>
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">zuul</span></td>
</tr>
<tr>
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"></td>
<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">zuul</span></td>
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</table> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Zuul</span> </h2>
<p style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Zuul consists of two pieces: the Zuul server, which monitors events from Gerrit and acts as the gatekeeper for CI pipelines, and Zuul merger, which merges patchsets in its own Git repos, checks for merge failures, and serves the resulting Git repositories for consumption by Jenkins build agents.</span> </p>
<h3 id="ContinuousIntegration-ZuulServer" style="margin: 10px 0 0 0; font-size: 16px; line-height: 25px; margin: 30px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Zuul Server</span> </h3>
<p style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">The Zuul server monitors events from Gerrit and, if an event matches a configured pipeline's criteria, notifies parties via Gearman of a job that they should execute. In return, parties that execute a job notify the Zuul server via Gearman of that job's success or failure. Zuul continues to hand out CI jobs to various parties, which in turn may spawn many CI tasks themselves. If a job passes or fails, the Zuul server comments on the appropriate review in Gerrit as the 'zuul' user. If the job was 'voting', the 'zuul' user may provide a +1 or -1 vote to the verification of the review.</span> </p>
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<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB/5639/a252d7f5e75d7a8bf7047b4b2c92f71a56a8f048.48/_/images/icons/macrobrowser/dropdown/note.png" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Note</span></th>
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<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding: 10px;; padding: 0px; border-collapse: collapse"> <p style="margin: 10px 0 0 0; margin-top: 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">The Zuul server actually lives on </span><a href="https://gerrit.asterisk.org" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">gerrit.asterisk.org</span></a><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">, due to some quirks with its underlying SSH library and to ensure that it has the best connection possible back to the Gerrit instance.</span> </p> </td>
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<h3 id="ContinuousIntegration-ZuulMerger" style="margin: 10px 0 0 0; font-size: 16px; line-height: 25px; margin: 30px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Zuul Merger</span> </h3>
<p style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">The Zuul merger lives on </span><code style="font-family: monospace"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">zuul.asterisk.org</span></code><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">, and handles all merge check jobs issued by the Zuul server via Gearman. This consists of:</span> </p>
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<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Checking that multiple patchsets may be merged together to support speculative execution</span> </li>
<li> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Hosting the merged patchsets in its own Git repository for the Jenkins build agents</span> </li>
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<h2 id="ContinuousIntegration-Jenkins" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Jenkins</span> </h2>
<p style="margin: 10px 0 0 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"> Jenkins lives on </span><code style="font-family: monospace"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">jenkins.asterisk.org</span></code><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"> and manages the CI test plans and handles all testing tasks issued by the Zuul server via Gearman. The Jenkins server issues new tasks to an available build agent via SSH. All Jenkins build agents retrieve the specified patchset from the Zuul merger server's Git repositories. The result of an executed task is communicated back to the Zuul server via Gearman, such that the Zuul server can provide verification back to the Gerrit review.</span> </p>
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<h1 id="ContinuousIntegration-AutomatedTesting" style="margin: 10px 0 0 0; margin-top: 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0; margin-top: 0"> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">Automated Testing</span> </h1>
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<h1 id="ContinuousIntegration-fixing_patchWhatToDoWhenYourPatchFails" style="margin: 10px 0 0 0; margin-top: 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0; margin-top: 0">
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<th class="diff-macro-title" style="background-color: transparent; text-align: left; font-weight: normal;padding: 5px;"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;"><span class="icon macro-placeholder-icon" style="background-color: ;line-height: 20px;"><img src="https://wiki.asterisk.org/wiki/s/en_GB/5639/a252d7f5e75d7a8bf7047b4b2c92f71a56a8f048.48/_/images/icons/macrobrowser/dropdown/anchor.png" style="padding-right: 5px; vertical-align: text-bottom;" /> </span>Anchor</span></th>
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<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">fixing_patch</span></td>
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<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; padding: 0px; border-collapse: collapse"><span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">fixing_patch</span></td>
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</table> <span class="diff-html-added" style="font-size: 100%; background-color: #ddfade;">What To Do When Your Patch Fails</span> </h1>
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