As DevD outlined, FAILED is a more significant build state than UNSTABLE. This means calling manager.buildUnstable() or manager.build.setResult(hudson.model.Result.UNSTABLE) after a step failed will still leave the build result FAILED.
However, you can override a failed build result state to be UNSTABLE by using reflection:
manager.build.@result = hudson.model.Result.UNSTABLE
Below example iterates over the build log lines looking for particular regex. If found it which will change (downgrade) build status, add badges & append to the build summary.
errpattern = ~/TIMEOUT - Batch \w+ did not complete within \d+ minutes.*/;
pattern = ~/INSERT COMPLETE - Batch of \d+ records was inserted to.*/;
manager.build.logFile.eachLine{ line ->
errmatcher=errpattern.matcher(line)
matcher=pattern.matcher(line)
if (errmatcher.find()) {
// warning message
String errMatchStr = errmatcher.group(0) // line matched
manager.addWarningBadge(errMatchStr);
manager.createSummary("warning.gif").appendText("<h4>${errMatchStr}</h4>", false, false, false, "red");
manager.buildUnstable();
// explicitly set build result
manager.build.@result = hudson.model.Result.UNSTABLE
} else if (matcher.find()) {
// ok
String matchStr = matcher.group(0) // line matched
manager.addInfoBadge(matchStr);
manager.createSummary("clipboard.gif").appendText("<h4>${matchStr}</h4>", false, false, false, "black");
}
}
Note: this iterates over every line, so assumes that these matches are unique, or you want a badge & summary appended for every matched line!
Post-build result is:
Build step 'Execute Groovy script' marked build as failure
Archiving artifacts
Build step 'Groovy Postbuild' changed build result to UNSTABLE
Email was triggered for: Unstable
Best Answer
Just put the following in the "Groovy script:" field:
evaluate(new File("... groovy script file name ..."));
Also, you might want to go even further. What if script name or path changes? Using Template plugin you can create a single "template" job, define call to groovy script (above line) in there, and in all jobs that need it add post-build action called "Use publishers from another project" referencing this template project.