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Do not unregister completed executions when iterating over FlowExecutionList to avoid unnecessary log warnings #304

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Merged
dwnusbaum merged 5 commits into from
Aug 28, 2023
Merged

Do not unregister completed executions when iterating over FlowExecutionList to avoid unnecessary log warnings #304

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4521fef
computeNext() should not cause a side-effect in the normal case
Vlatombe Aug 25, 2023
1589b4a
Still need to return a non-completed FlowExecution
Vlatombe Aug 25, 2023
e75eec2
On load, unregister any complete FlowExecution to clean up stale entries
Vlatombe Aug 25, 2023
f166590
Use a different method to iterate while loading so that we can discar…
Vlatombe Aug 25, 2023
ca179a2
Remove from FlowExecutionList using iterator#remove to be safe
Vlatombe Aug 25, 2023
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34 changes: 25 additions & 9 deletions src/main/java/org/jenkinsci/plugins/workflow/flow/FlowExecutionList.java
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,6 @@
import java.util.logging.Logger;
import org.jenkinsci.plugins.workflow.graph.FlowNode;
import org.jenkinsci.plugins.workflow.graphanalysis.LinearBlockHoppingScanner;
import org.jvnet.hudson.reactor.Milestone;

import org.kohsuke.accmod.Restricted;
import org.kohsuke.accmod.restrictions.Beta;
Expand Down Expand Up @@ -80,7 +79,7 @@ public FlowExecutionList() {
*/
@Override
public Iterator<FlowExecution> iterator() {
return new AbstractIterator<FlowExecution>() {
return new AbstractIterator<>() {
final Iterator<FlowExecutionOwner> base = runningTasks.iterator();

@Override
Expand All @@ -89,9 +88,7 @@ protected FlowExecution computeNext() {
FlowExecutionOwner o = base.next();
try {
FlowExecution e = o.get();
if (e.isComplete()) {
unregister(o);
} else {
if (!e.isComplete()) {
return e;
}
} catch (Throwable e) {
Expand Down Expand Up @@ -208,13 +205,32 @@ public boolean isResumptionComplete() {
public static class ItemListenerImpl extends ItemListener {
@Override
public void onLoaded() {
FlowExecutionList list = FlowExecutionList.get();
for (final FlowExecution e : list) {
// The call to FlowExecutionOwner.get in the implementation of iterator() is sufficent to load the Pipeline.
FlowExecutionList.get().resume();
}
}

private void resume() {
boolean needSave = false;
for (var it = runningTasks.iterator(); it.hasNext(); ) {
var o = it.next();
try {
FlowExecution e = o.get();
LOGGER.log(Level.FINE, "Eagerly loaded {0}", e);
if (e.isComplete()) {
LOGGER.log(Level.FINE, "Unregistering completed " + o, e);
it.remove();
needSave = true;
}
} catch (IOException ex) {
LOGGER.log(Level.FINE, "Failed to load " + o + ". Unregistering", ex);
it.remove();
needSave = true;
}
list.resumptionComplete = true;
}
if (needSave) {
saveLater();
}
resumptionComplete = true;
}

/**
Expand Down