Created
December 21, 2018 19:34
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Groovy script to add PR title as a environment variable to Jenkins build environment
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| // I had the need to access the PR title in a build triggered | |
| // by a merge of that PR into the targeted repository. In our case, | |
| // we use the GitHub hook trigger for GITScm polling setting provided | |
| // by the Github plugin. This fires a webhook at your jenkins instance | |
| // (must be configured in Github) when changes are pushed into the | |
| // target repo. The code below is put into the Groovy script window | |
| // provded by the Environment Injector Plugin. | |
| // Get the current build environment variables. | |
| def thr = Thread.currentThread() | |
| def build = thr?.executable | |
| def envVarsMap = build.parent.builds[0].properties.get("envVars") | |
| // Build the command to extract the commit message using git log. | |
| // Note PR title gets inserted into commit message when PR is merged. | |
| def cmd = "git --git-dir=$envVarsMap.WORKSPACE/.git log --format=%b -1 $envVarsMap.GIT_COMMIT"; | |
| // Execute the shell command. | |
| def sout = new StringBuilder(), serr = new StringBuilder() | |
| def proc = cmd.execute() | |
| proc.consumeProcessOutput(sout, serr) | |
| proc.waitForOrKill(1000) | |
| // Inject the new environment variable. | |
| return ['ghprbPullTitle': sout] |
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