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Flush overall Pipeline log stream when shutting down Jenkins #669

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merged 5 commits into from
Mar 7, 2023
Merged

Flush overall Pipeline log stream when shutting down Jenkins #669

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4169906
Flush overall Pipeline log stream when shutting down Jenkins
dwnusbaum Mar 3, 2023
479665f
Add regression test using RealJenkinsRule
dwnusbaum Mar 3, 2023
c144a2b
Enhance logging to diagnose CpsFlowDefinitionRJRTest.flushLogsOnShutd…
dwnusbaum Mar 6, 2023
d49313e
Update Jenkins version to try to diagnose CpsFlowDefinitionRJRTest.fl…
dwnusbaum Mar 6, 2023
6888d82
Skip CpsFlowDefinitionRJRTest.flushLogsOnShutdown on Windows for now
dwnusbaum Mar 6, 2023
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1 change: 1 addition & 0 deletions plugin/src/main/java/org/jenkinsci/plugins/workflow/cps/CpsFlowExecution.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1694,6 +1694,7 @@ public void pause(final boolean v) throws IOException {
LOGGER.log(Level.WARNING, null, t);
}
});
cpsExec.getOwner().getListener().getLogger().close();
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@dwnusbaum dwnusbaum Mar 3, 2023 •
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We can also just flush (I tested both options), but I'm not really sure that it matters either way.

Suggested change
cpsExec.getOwner().getListener().getLogger().close();
cpsExec.getOwner().getListener().getLogger().flush();

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Is getOwner() guaranteed to be non-null? getListener()? In principle SpotBugs should know but sometimes it seems to miss these things.

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I think CpsFlowExecution.owner is guaranteed to be non-null. It's set here and here (called here).

getListener may return WorkflowRun.NULL_LISTENER, which is harmless to close, or throw an exception, but this code already handles exceptions, and I made this be the final operation in the try block so that other more important cleanup still runs even if this throws.

}
} catch (Exception ex) {
LOGGER.log(Level.WARNING, "Error persisting Pipeline execution at shutdown: "+((CpsFlowExecution) execution).owner, ex);
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23 changes: 23 additions & 0 deletions plugin/src/test/java/org/jenkinsci/plugins/workflow/cps/CpsFlowDefinitionRJRTest.java
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
package org.jenkinsci.plugins.workflow.cps;

import org.jenkinsci.plugins.workflow.job.WorkflowJob;
import org.jenkinsci.plugins.workflow.job.WorkflowRun;
import org.junit.Rule;
import org.junit.Test;
import org.jvnet.hudson.test.JenkinsRule;
Expand All @@ -21,4 +22,26 @@ private static void doesItSmoke(JenkinsRule r) throws Exception {
p.setDefinition(new CpsFlowDefinition("print Jenkins.get().getRootDir().toString()", false));
r.assertBuildStatusSuccess(p.scheduleBuild2(0));
}

@Test
public void flushLogsOnShutdown() throws Throwable {
rjr.then(CpsFlowDefinitionRJRTest::flushLogsOnShutdownPreRestart);
rjr.then(CpsFlowDefinitionRJRTest::flushLogsOnShutdownPostRestart);
}

private static void flushLogsOnShutdownPreRestart(JenkinsRule r) throws Exception {
WorkflowJob p = r.createProject(WorkflowJob.class, "p");
p.setDefinition(new CpsFlowDefinition("sleep 10\n", true));
WorkflowRun b = p.scheduleBuild2(0).waitForStart();
r.waitForMessage("Sleeping for 10 sec", b);
r.jenkins.doQuietDown();
}

private static void flushLogsOnShutdownPostRestart(JenkinsRule r) throws Exception {
WorkflowJob p = r.jenkins.getItemByFullName("p", WorkflowJob.class);
WorkflowRun b = p.getLastBuild();
r.assertBuildStatusSuccess(r.waitForCompletion(b));
r.assertLogContains("Resuming build at ", b);
r.assertLogContains("Pausing (Preparing for shutdown)", b);
Comment on lines +49 to +50
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The first assertion here passes with or without the fix, since that message is printed after the restart. However, the second assertion is printed right before Jenkins shuts down, and it is missing from the log if you revert the fix.

}
}