Add [skip ci] feature for commits

Author: Ilya Radchenko

lib/webhooks.js

@@ -40,15 +40,23 @@ function makeJob(project, config) {
 }
 
 function startFromCommit(project, payload, send) {
-  var config = pushJob(payload)
-    , branch = project.branch(config.branch)
-    , job
+  var config = pushJob(payload);
+  var lastCommit = payload.commits[payload.commits.length - 1];
+
+  if (lastCommit.message.indexOf('[skip ci]') > -1) {
+    return { skipCi: true };
+  }
+
+  var branch = project.branch(config.branch);
+  var job;
 
   if (branch) {
-    job = makeJob(project, config)
-    if (job) return send(job)
+    job = makeJob(project, config);
+
+    if (job) return send(job);
   }
-  return false
+
+  return false;
 }
 
 // post a comment to the pull request asking for confirmation by a
@@ -212,20 +220,30 @@ function receiveWebhook(emitter, req, res) {
 
   res.send(204)
   // a new pull request was created
-  var getConfig
+  var getConfig;
+
   if (payload.pull_request) {
     if (config.pull_requests === 'none') {
       return console.log('Got pull request, but testing pull requests is disabled')
     }
     return startFromPullRequest(account, config, req.project, payload, sendJob)
   }
+
   // issue comment
   if (payload.comment) {
     if (config.pull_requests !== 'whitelist') return
     return startFromComment(account, config, req.project, payload, sendJob)
   }
+
   // otherwise, this is a commit
-  startFromCommit(req.project, payload, sendJob)
+  var result = startFromCommit(req.project, payload, sendJob);
+
+  if (result && result.skipCi) {
+    console.log('Skipping commit due to [skip ci] tag');
+  }
+  else {
+    console.log('webhook received, but no branched matched or branch is not active');
+  }
 
   function sendJob(job) {
     emitter.emit('job.prepare', job)