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<title>[9366] sites/trunk/api.wordpress.org/public_html/dotorg/trac/pr: Trac: Github PRs: When a PR is first detected referencing a ticket, add an inline mention to Trac.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://meta.trac.wordpress.org/changeset/9366">9366</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://meta.trac.wordpress.org/changeset/9366","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>dd32</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2019-12-19 08:23:03 +0000 (Thu, 19 Dec 2019)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Trac: Github PRs: When a PR is first detected referencing a ticket, add an inline mention to Trac.

For now, this doesn't trigger email notifications.

See <a href="http://meta.trac.wordpress.org/ticket/4903">#4903</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#sitestrunkapiwordpressorgpublic_htmldotorgtracprwebhookphp">sites/trunk/api.wordpress.org/public_html/dotorg/trac/pr/webhook.php</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#sitestrunkapiwordpressorgpublic_htmldotorgtracprclasstracphp">sites/trunk/api.wordpress.org/public_html/dotorg/trac/pr/class-trac.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="sitestrunkapiwordpressorgpublic_htmldotorgtracprclasstracphp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/api.wordpress.org/public_html/dotorg/trac/pr/class-trac.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/api.wordpress.org/public_html/dotorg/trac/pr/class-trac.php                           (rev 0)
+++ sites/trunk/api.wordpress.org/public_html/dotorg/trac/pr/class-trac.php     2019-12-19 08:23:03 UTC (rev 9366)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,189 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+namespace WordPressdotorg\API\Trac\GithubPRs;
+
+class Trac {
+       protected $trac_uri = false;
+       protected $credentials = [];
+
+       public function __construct( $username, $password, $trac_uri ) {
+               $this->trac_uri = $trac_uri;
+               $this->credentials = [ $username, $password ];
+       }
+
+       /**
+        * Retrieve a Trac Ticket by ID.
+        */
+       function get( $id ) {
+               try {
+                       $response = $this->api( 'ticket.get', [ $id ] );
+               } catch( \Exception $e ) {
+                       return false;
+               }
+
+               return [
+                       'id' => $response[0],
+               ] + (array) $response[3];
+       }
+
+       /**
+        * Update a Trac ticket to add a comment, or alter ticket properties.
+        * 
+        * To set the Author or Time of a comment, the Trac API user must have TICKET_ADMIN priv.
+        */
+       function update( $id, $comment, $attr = [], $notify = false, $author = false, $when = false ) {
+               if ( empty( $attr['_ts'] ) ) {
+                       $get = $this->get( $id );
+                       $attr['_ts'] = $get['_ts'];
+               }
+
+               if ( empty( $attr['action'] ) ) {
+                       $attr['action'] = 'leave';
+               }
+
+               try {
+                       $this->api( 'ticket.update', [ $id, $comment, $attr, (bool) $notify, $author, $when ] );
+
+                       return true;
+               } catch( \Exception $e ) {
+                       // Try once more.. `_ts` may have been outdated.
+                       if ( isset( $get ) && $attr['_ts'] === $get['_ts'] ) {
+                               $get = $this->get( $id ); // refetch the ticket.
+                               $attr['_ts'] = $get['_ts'];
+                               try {
+
+                                       $this->api( 'ticket.update', [ $id, $comment, $attr, (bool) $notify, $author, $when ] );
+                                       return true;
+                               } catch( \Exception $e ) {
+                                       throw $e;
+                               }
+                       }
+                       return false;
+               }
+       }
+
+       /**
+        * Retrieve ticket comments by Ticket ID.
+        */
+       function get_comments( $id ) {
+               try {
+                       $response = $this->api( 'ticket.changeLog', [ $id ] );
+               } catch( \Exception $e ) {
+                       return false;
+               }
+
+               foreach ( $response as $i => $c ) {
+                       $response[ $i ] = [
+                               'time'      => $c[0],
+                               'author'    => $c[1],
+                               'field'     => $c[2],
+                               'oldvalue'  => $c[3],
+                               'newvalue'  => $c[4],
+                               'permanent' => $c[5],
+                       ];
+               }
+
+               return $response;
+       }
+
+       /**
+        * Fetch/POST a Trac JSONRPC endpoint.
+        */
+       public function api( $method, $params ) {
+               $context = stream_context_create( [ 'http' => [
+                       'method'        => 'POST',
+                       'user_agent'    => 'WordPress.org Trac; trac.WordPress.org',
+                       'max_redirects' => 0,
+                       'timeout'       => 5,
+                       'ignore_errors' => true,
+                       'header'        => 
+                               [
+                                       'Content-Type: application/json',
+                                       'Authorization: Basic ' . base64_encode( $this->credentials[0] . ':' . $this->credentials[1] ),
+                               ],
+                       'content'       => json_encode( [
+                               'method' => $method,
+                               'params' => $this->trac_json_objectify( $params ),
+                       ] ),
+               ] ] );
+
+               $json = file_get_contents(
+                       $this->trac_uri,
+                       false,
+                       $context
+               );
+
+               $json = json_decode( $json );
+               if ( $json && $json->result ) {
+                       $json = $json->result;
+                       $json = $this->trac_json_deobjectify( $json );
+
+               } elseif ( $json && isset( $json->error ) ) {
+                       throw new \Exception( 'JSON Error: ' . $json->error->code . ' ' . $json->error->message );
+               } elseif ( ! $json ) {
+                       throw new \Exception( 'Trac API Error: Trac Unavailable.' );
+               }
+
+               return $json;
+       }
+
+       /**
+        * Encodes DateTime objects into the Trac Date JSON format.
+        */
+       protected function trac_json_objectify( $json ) {
+               foreach ( $json as $k => $v ) {
+                       $value = $v;
+                       if ( is_object( $v ) && $v instanceof \DateTime ) {
+                               $value = (object) [
+                                       '__jsonclass__' => [
+                                               'datetime',
+                                               $v->format('Y-m-d\TH:i:s')
+                                       ]
+                               ];
+                       } elseif ( is_array( $v ) || is_object( $v ) ) {
+                               $value = $this->trac_json_objectify( $v );
+                       }
+
+                       if ( $value !== $v ) {
+                               if ( is_object( $json ) ) {
+                                       $json->$k = $value;
+                               } else {
+                                       $json[ $k ] = $value;
+                               }
+                       }
+               }
+
+               return $json;
+       }
+
+       /**
+        * Decodes a Trac JSON response into binary and DateTime objects where needed.
+        */
+       protected function trac_json_deobjectify( $json ) {
+               foreach ( $json as $k => $v ) {
+                       $value = $v;
+                       if ( is_object( $v ) && isset( $v->__jsonclass__ ) ) {
+                               switch ( $v->__jsonclass__[0] ) {
+                                       case 'datetime':
+                                               $value = new \DateTime( $v->__jsonclass__[1] );
+                                               break;
+                                       case 'binary':
+                                               $value = base64_decode( $v->__jsonclass__[1] );
+                                               break;
+                               }
+                       } elseif ( is_array( $v ) || is_object( $v ) ) {
+                               $value = $this->trac_json_deobjectify( $v );
+                       }
+
+                       if ( $value !== $v ) {
+                               if ( is_object( $json ) ) {
+                                       $json->$k = $value;
+                               } else {
+                                       $json[ $k ] = $value;
+                               }
+                       }
+               }
+
+               return $json;
+       }
+}
+
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: sites/trunk/api.wordpress.org/public_html/dotorg/trac/pr/class-trac.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:eol-style</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="sitestrunkapiwordpressorgpublic_htmldotorgtracprwebhookphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/api.wordpress.org/public_html/dotorg/trac/pr/webhook.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/api.wordpress.org/public_html/dotorg/trac/pr/webhook.php      2019-12-19 08:21:26 UTC (rev 9365)
+++ sites/trunk/api.wordpress.org/public_html/dotorg/trac/pr/webhook.php        2019-12-19 08:23:03 UTC (rev 9366)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -5,6 +5,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> require dirname( dirname( dirname( __DIR__ ) ) ) . '/includes/hyperdb/bb-10-hyper-db.php';
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> require __DIR__ . '/functions.php';
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+require __DIR__ . '/class-trac.php';
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> function verify_signature() {
</span><span class="cx" style="display: block; padding: 0 10px">        // Validate that the request came from GitHub.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -74,7 +75,16 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                ]
</span><span class="cx" style="display: block; padding: 0 10px">                        );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        // TODO: Create a Trac ticket comment mentioning that the PR has been linked to the ticket.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 // Add a mention to the Trac Ticket.
+                       $trac_uri = 'https://' . $pr_data->trac_ticket[0] . '.trac.wordpress.org/login/rpc';
+                       $trac = new Trac( GH_PRBOT_USER, GH_PRBOT_PASS, $trac_uri );
+
+                       $trac->update(
+                               $pr_data->trac_ticket[1],
+                               "''This ticket was mentioned in [{$pr_data->html_url} PR #{$pr_number}] " .
+                                       "on [https://github.com/{$pr_repo}/ {$pr_repo}] " .
+                                       "by [{$pr_data->user->url} {$pr_data->user->name}].''"
+                       );
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                // Step 4. Update all the instances of this PR with the new data, it may be linked to multiple tickets/tracs.
</span></span></pre>
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