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// Copyright 2016 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.runtime;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Strings.nullToEmpty;
import static com.google.devtools.build.lib.events.Event.of;
import static com.google.devtools.build.lib.events.EventKind.PROGRESS;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.common.collect.Multimap;
import com.google.common.collect.Sets;
import com.google.common.eventbus.Subscribe;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import com.google.common.util.concurrent.Uninterruptibles;
import com.google.devtools.build.lib.actions.ActionExecutedEvent;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.ArtifactPathResolver;
import com.google.devtools.build.lib.actions.EventReportingArtifacts;
import com.google.devtools.build.lib.actions.EventReportingArtifacts.ReportedArtifacts;
import com.google.devtools.build.lib.analysis.BuildInfoEvent;
import com.google.devtools.build.lib.analysis.NoBuildEvent;
import com.google.devtools.build.lib.analysis.extra.ExtraAction;
import com.google.devtools.build.lib.buildeventstream.AbortedEvent;
import com.google.devtools.build.lib.buildeventstream.AnnounceBuildEventTransportsEvent;
import com.google.devtools.build.lib.buildeventstream.BuildCompletingEvent;
import com.google.devtools.build.lib.buildeventstream.BuildEvent;
import com.google.devtools.build.lib.buildeventstream.BuildEventId;
import com.google.devtools.build.lib.buildeventstream.BuildEventStreamProtos.Aborted.AbortReason;
import com.google.devtools.build.lib.buildeventstream.BuildEventTransport;
import com.google.devtools.build.lib.buildeventstream.BuildEventTransportClosedEvent;
import com.google.devtools.build.lib.buildeventstream.BuildEventWithConfiguration;
import com.google.devtools.build.lib.buildeventstream.BuildEventWithOrderConstraint;
import com.google.devtools.build.lib.buildeventstream.ChainableEvent;
import com.google.devtools.build.lib.buildeventstream.LastBuildEvent;
import com.google.devtools.build.lib.buildeventstream.NullConfiguration;
import com.google.devtools.build.lib.buildeventstream.ProgressEvent;
import com.google.devtools.build.lib.buildeventstream.transports.BuildEventStreamOptions;
import com.google.devtools.build.lib.buildtool.BuildRequest;
import com.google.devtools.build.lib.buildtool.buildevent.BuildCompleteEvent;
import com.google.devtools.build.lib.buildtool.buildevent.BuildInterruptedEvent;
import com.google.devtools.build.lib.buildtool.buildevent.BuildStartingEvent;
import com.google.devtools.build.lib.buildtool.buildevent.NoAnalyzeEvent;
import com.google.devtools.build.lib.buildtool.buildevent.NoExecutionEvent;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.collect.nestedset.NestedSetView;
import com.google.devtools.build.lib.events.Event;
import com.google.devtools.build.lib.events.EventHandler;
import com.google.devtools.build.lib.events.Reporter;
import com.google.devtools.build.lib.pkgcache.TargetParsingCompleteEvent;
import com.google.devtools.build.lib.util.LoggingUtil;
import com.google.devtools.build.lib.util.Pair;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import java.util.function.BiConsumer;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.Nullable;
/**
* Listens for {@link BuildEvent}s and streams them to the provided {@link BuildEventTransport}s.
*
* <p>The streamer takes care of closing all {@link BuildEventTransport}s. It does so after having
* received a {@link BuildCompleteEvent}. Furthermore, it emits two event types to the
* {@code eventBus}. After having received the first {@link BuildEvent} it emits a
* {@link AnnounceBuildEventTransportsEvent} that contains a list of all its transports.
* Furthermore, after a transport has been closed, it emits
* a {@link BuildEventTransportClosedEvent}.
*/
public class BuildEventStreamer implements EventHandler {
private final Collection<BuildEventTransport> transports;
private final Reporter reporter;
private final BuildEventStreamOptions options;
private Set<BuildEventId> announcedEvents;
private final Set<BuildEventId> postedEvents = new HashSet<>();
private final Set<BuildEventId> configurationsPosted = new HashSet<>();
private List<Pair<String, String>> bufferedStdoutStderrPairs = new ArrayList<>();
private final Multimap<BuildEventId, BuildEvent> pendingEvents = HashMultimap.create();
private int progressCount;
private final CountingArtifactGroupNamer artifactGroupNamer;
private OutErrProvider outErrProvider;
private volatile AbortReason abortReason = AbortReason.UNKNOWN;
// Will be set to true if the build was invoked through "bazel test" or "bazel coverage".
private boolean isTestCommand;
// After #buildComplete is called, contains the set of events that the streamer is expected to
// process. The streamer will fully close after seeing them. This field is null until
// #buildComplete is called.
private Set<BuildEventId> finalEventsToCome = null;
// True, if we already closed the stream.
private boolean closed;
private static final Logger logger = Logger.getLogger(BuildEventStreamer.class.getName());
/**
* Provider for stdout and stderr output.
*/
public interface OutErrProvider {
/**
* Return the chunks of stdout that were produced since the last call to this function (or the
* beginning of the build, for the first call). It is the responsibility of the class
* implementing this interface to properly synchronize with simultaneously written output.
*/
Iterable<String> getOut();
/**
* Return the chunks of stderr that were produced since the last call to this function (or the
* beginning of the build, for the first call). It is the responsibility of the class
* implementing this interface to properly synchronize with simultaneously written output.
*/
Iterable<String> getErr();
}
/** Creates a new build event streamer. */
private BuildEventStreamer(
Collection<BuildEventTransport> transports,
@Nullable Reporter reporter,
BuildEventStreamOptions options,
CountingArtifactGroupNamer artifactGroupNamer) {
this.transports = transports;
this.reporter = reporter;
this.options = options;
this.announcedEvents = null;
this.progressCount = 0;
this.artifactGroupNamer = artifactGroupNamer;
}
/** Creates a new build event streamer with default options. */
public BuildEventStreamer(
Collection<BuildEventTransport> transports,
@Nullable Reporter reporter,
CountingArtifactGroupNamer namer) {
this(transports, reporter, new BuildEventStreamOptions(), namer);
}
public void registerOutErrProvider(OutErrProvider outErrProvider) {
this.outErrProvider = outErrProvider;
}
/**
* Post a new event to all transports; simultaneously keep track of the events we announce to
* still come.
*
* <p>Moreover, link unannounced events to the progress stream; we only expect failure events to
* come before their parents.
*/
private void post(BuildEvent event) {
List<BuildEvent> linkEvents = null;
BuildEventId id = event.getEventId();
List<BuildEvent> flushEvents = null;
boolean lastEvent = false;
synchronized (this) {
if (announcedEvents == null) {
announcedEvents = new HashSet<>();
// The very first event of a stream is implicitly announced by the convention that
// a complete stream has to have at least one entry. In this way we keep the invariant
// that the set of posted events is always a subset of the set of announced events.
announcedEvents.add(id);
if (!event.getChildrenEvents().contains(ProgressEvent.INITIAL_PROGRESS_UPDATE)) {
BuildEvent progress = ProgressEvent.progressChainIn(progressCount, event.getEventId());
linkEvents = ImmutableList.of(progress);
progressCount++;
announcedEvents.addAll(progress.getChildrenEvents());
// the new first event in the stream, implicitly announced by the fact that complete
// stream may not be empty.
announcedEvents.add(progress.getEventId());
postedEvents.add(progress.getEventId());
}
if (reporter != null) {
reporter.post(new AnnounceBuildEventTransportsEvent(transports));
}
if (!bufferedStdoutStderrPairs.isEmpty()) {
flushEvents = new ArrayList<>(bufferedStdoutStderrPairs.size());
for (Pair<String, String> outErrPair : bufferedStdoutStderrPairs) {
flushEvents.add(flushStdoutStderrEvent(outErrPair.getFirst(), outErrPair.getSecond()));
}
}
bufferedStdoutStderrPairs = null;
} else {
if (!announcedEvents.contains(id)) {
Iterable<String> allOut = ImmutableList.of();
Iterable<String> allErr = ImmutableList.of();
if (outErrProvider != null) {
allOut = orEmpty(outErrProvider.getOut());
allErr = orEmpty(outErrProvider.getErr());
}
linkEvents = new ArrayList<>();
List<BuildEvent> finalLinkEvents = linkEvents;
consumeAsPairsofStrings(
allOut,
allErr,
(out, err) -> {
BuildEvent progressEvent =
ProgressEvent.progressChainIn(progressCount, id, out, err);
finalLinkEvents.add(progressEvent);
progressCount++;
announcedEvents.addAll(progressEvent.getChildrenEvents());
postedEvents.add(progressEvent.getEventId());
});
}
}
if (event instanceof BuildInfoEvent) {
// The specification for BuildInfoEvent says that there may be many such events,
// but all except the first one should be ignored.
if (postedEvents.contains(id)) {
return;
}
}
postedEvents.add(id);
announcedEvents.addAll(event.getChildrenEvents());
// We keep as an invariant that postedEvents is a subset of announced events, so this is a
// cheaper test for equality
if (announcedEvents.size() == postedEvents.size()) {
lastEvent = true;
}
}
BuildEvent mainEvent = event;
if (lastEvent) {
mainEvent = new LastBuildEvent(event);
}
for (BuildEventTransport transport : transports) {
if (linkEvents != null) {
for (BuildEvent linkEvent : linkEvents) {
transport.sendBuildEvent(linkEvent);
}
}
transport.sendBuildEvent(mainEvent);
}
if (flushEvents != null) {
for (BuildEvent flushEvent : flushEvents) {
for (BuildEventTransport transport : transports) {
transport.sendBuildEvent(flushEvent);
}
}
}
}
/**
* If some events are blocked on the absence of a build_started event, generate such an event;
* moreover, make that artificial start event announce all events blocked on it, as well as the
* {@link BuildCompletingEvent} that caused the early end of the stream.
*/
private void clearMissingStartEvent(BuildEventId id) {
if (pendingEvents.containsKey(BuildEventId.buildStartedId())) {
ImmutableSet.Builder<BuildEventId> children = ImmutableSet.<BuildEventId>builder();
children.add(ProgressEvent.INITIAL_PROGRESS_UPDATE);
children.add(id);
children.addAll(
pendingEvents
.get(BuildEventId.buildStartedId())
.stream()
.map(BuildEvent::getEventId)
.collect(ImmutableSet.<BuildEventId>toImmutableSet()));
buildEvent(
new AbortedEvent(BuildEventId.buildStartedId(), children.build(), abortReason, ""));
}
}
/** Clear pending events by generating aborted events for all their requisits. */
private void clearPendingEvents() {
while (!pendingEvents.isEmpty()) {
BuildEventId id = pendingEvents.keySet().iterator().next();
buildEvent(new AbortedEvent(id, abortReason, ""));
}
}
/**
* Clear all events that are still announced; events not naturally closed by the expected event
* normally only occur if the build is aborted.
*/
private void clearAnnouncedEvents(Collection<BuildEventId> dontclear) {
if (announcedEvents != null) {
// create a copy of the identifiers to clear, as the post method
// will change the set of already announced events.
Set<BuildEventId> ids;
synchronized (this) {
ids = Sets.difference(announcedEvents, postedEvents);
}
for (BuildEventId id : ids) {
if (!dontclear.contains(id)) {
post(new AbortedEvent(id, abortReason, ""));
}
}
}
}
private ScheduledFuture<?> bepUploadWaitEvent(ScheduledExecutorService executor) {
final long startNanos = System.nanoTime();
return executor.scheduleAtFixedRate(
() -> {
long deltaNanos = System.nanoTime() - startNanos;
long deltaSeconds = TimeUnit.NANOSECONDS.toSeconds(deltaNanos);
Event waitEvt =
of(PROGRESS, null, "Waiting for Build Event Protocol upload: " + deltaSeconds + "s");
if (reporter != null) {
reporter.handle(waitEvt);
}
},
0,
1,
TimeUnit.SECONDS);
}
public synchronized boolean isClosed() {
return closed;
}
public void close() {
close(null);
}
public void close(@Nullable AbortReason reason) {
synchronized (this) {
if (closed) {
return;
}
closed = true;
if (reason != null) {
abortReason = reason;
}
if (finalEventsToCome == null) {
// This should only happen if there's a crash. Try to clean up as best we can.
clearEventsAndPostFinalProgress(null);
}
}
ScheduledExecutorService executor = null;
try {
executor = Executors.newSingleThreadScheduledExecutor(
new ThreadFactoryBuilder().setNameFormat("build-event-streamer-%d").build());
List<ListenableFuture<Void>> closeFutures = new ArrayList<>(transports.size());
for (final BuildEventTransport transport : transports) {
ListenableFuture<Void> closeFuture = transport.close();
closeFuture.addListener(
() -> {
if (reporter != null) {
reporter.post(new BuildEventTransportClosedEvent(transport));
}
},
executor);
closeFutures.add(closeFuture);
}
try {
if (closeFutures.isEmpty()) {
// Don't spam events if there is nothing to close.
return;
}
ScheduledFuture<?> f = bepUploadWaitEvent(executor);
// Wait for all transports to close, ignoring interrupts.
Uninterruptibles.getUninterruptibly(Futures.allAsList(closeFutures));
f.cancel(true);
} catch (ExecutionException e) {
logger.log(Level.SEVERE, "Failed to close a build event transport", e);
LoggingUtil.logToRemote(Level.SEVERE, "Failed to close a build event transport", e);
}
} finally {
if (executor != null) {
executor.shutdown();
}
}
}
private void maybeReportArtifactSet(
ArtifactPathResolver pathResolver, NestedSetView<Artifact> view) {
String name = artifactGroupNamer.maybeName(view);
if (name == null) {
return;
}
// We only split if the max number of entries is at least 2 (it must be at least a binary tree).
// The method throws for smaller values.
if (options.maxNamedSetEntries >= 2) {
// We only split the event after naming it to avoid splitting the same node multiple times.
// Note that the artifactGroupNames keeps references to the individual pieces, so this can
// double the memory consumption of large nested sets.
view = view.splitIfExceedsMaximumSize(options.maxNamedSetEntries);
}
for (NestedSetView<Artifact> transitive : view.transitives()) {
maybeReportArtifactSet(pathResolver, transitive);
}
post(new NamedArtifactGroup(name, pathResolver, view));
}
private void maybeReportArtifactSet(ArtifactPathResolver pathResolver, NestedSet<Artifact> set) {
maybeReportArtifactSet(pathResolver, new NestedSetView<Artifact>(set));
}
private void maybeReportConfiguration(BuildEvent configuration) {
BuildEvent event = configuration;
if (configuration == null) {
event = new NullConfiguration();
}
BuildEventId id = event.getEventId();
synchronized (this) {
if (configurationsPosted.contains(id)) {
return;
}
configurationsPosted.add(id);
}
post(event);
}
@Override
public void handle(Event event) {}
@Subscribe
public void buildInterrupted(BuildInterruptedEvent event) {
abortReason = AbortReason.USER_INTERRUPTED;
}
@Subscribe
public void noAnalyze(NoAnalyzeEvent event) {
abortReason = AbortReason.NO_ANALYZE;
}
@Subscribe
public void noExecution(NoExecutionEvent event) {
abortReason = AbortReason.NO_BUILD;
}
@Subscribe
public void buildEvent(BuildEvent event) {
if (finalEventsToCome != null) {
synchronized (this) {
BuildEventId id = event.getEventId();
if (finalEventsToCome.contains(id)) {
finalEventsToCome.remove(id);
} else {
return;
}
}
}
if (shouldIgnoreBuildEvent(event)) {
return;
}
if (event instanceof BuildStartingEvent) {
BuildRequest buildRequest = ((BuildStartingEvent) event).getRequest();
isTestCommand = "test".equals(buildRequest.getCommandName())
|| "coverage".equals(buildRequest.getCommandName());
}
if (event instanceof BuildEventWithConfiguration) {
for (BuildEvent configuration : ((BuildEventWithConfiguration) event).getConfigurations()) {
maybeReportConfiguration(configuration);
}
}
if (event instanceof EventReportingArtifacts) {
ReportedArtifacts reportedArtifacts = ((EventReportingArtifacts) event).reportedArtifacts();
for (NestedSet<Artifact> artifactSet : reportedArtifacts.artifacts) {
maybeReportArtifactSet(reportedArtifacts.pathResolver, artifactSet);
}
}
if (event instanceof BuildCompletingEvent
&& !event.getEventId().equals(BuildEventId.buildStartedId())) {
clearMissingStartEvent(event.getEventId());
}
post(event);
// Reconsider all events blocked by the event just posted.
Collection<BuildEvent> toReconsider = pendingEvents.removeAll(event.getEventId());
for (BuildEvent freedEvent : toReconsider) {
buildEvent(freedEvent);
}
if (event instanceof BuildCompleteEvent && isCrash((BuildCompleteEvent) event)) {
abortReason = AbortReason.INTERNAL;
}
if (event instanceof BuildCompletingEvent) {
buildComplete(event);
}
if (event instanceof NoBuildEvent) {
if (!((NoBuildEvent) event).separateFinishedEvent()) {
buildComplete(event);
}
}
if (finalEventsToCome != null && finalEventsToCome.isEmpty()) {
close();
}
}
private static boolean isCrash(BuildCompleteEvent event) {
return event.getResult().getUnhandledThrowable() != null;
}
private synchronized BuildEvent flushStdoutStderrEvent(String out, String err) {
BuildEvent updateEvent = ProgressEvent.progressUpdate(progressCount, out, err);
progressCount++;
announcedEvents.addAll(updateEvent.getChildrenEvents());
postedEvents.add(updateEvent.getEventId());
return updateEvent;
}
void flush() {
List<BuildEvent> updateEvents = null;
synchronized (this) {
Iterable<String> allOut = ImmutableList.of();
Iterable<String> allErr = ImmutableList.of();
if (outErrProvider != null) {
allOut = orEmpty(outErrProvider.getOut());
allErr = orEmpty(outErrProvider.getErr());
}
if (Iterables.isEmpty(allOut) && Iterables.isEmpty(allErr)) {
// Nothing to flush; avoid generating an unneeded progress event.
return;
}
if (announcedEvents != null) {
updateEvents = new ArrayList<>();
List<BuildEvent> finalUpdateEvents = updateEvents;
consumeAsPairsofStrings(
allOut, allErr, (s1, s2) -> finalUpdateEvents.add(flushStdoutStderrEvent(s1, s2)));
} else {
consumeAsPairsofStrings(
allOut, allErr, (s1, s2) -> bufferedStdoutStderrPairs.add(Pair.of(s1, s2)));
}
}
if (updateEvents != null) {
for (BuildEvent updateEvent : updateEvents) {
for (BuildEventTransport transport : transports) {
transport.sendBuildEvent(updateEvent);
}
}
}
}
// Returns the given Iterable, or an empty list if null.
private static <T> Iterable<T> orEmpty(Iterable<T> original) {
return original == null ? ImmutableList.of() : original;
}
// Given a pair of iterables and {@link BiConsumer}s, emit a sequence of pairs to the consumers.
// Given the leftIterables [L1, L2, ... LN], and the rightIterable [R1, R2, ... RM], the consumers
// will see this sequence of calls:
// biConsumer.accept(L1, null);
// biConsumer.accept(L2, null);
// ....
// biConsumer.accept(L(N-1), null);
// biConsumer.accept(LN, R1);
// biConsumer.accept(R2, null);
// ...
// biConsumer.accept(R(M-1), null);
// lastConsumer.accept(RM, null);
//
// The lastConsumer is always called exactly once, even if both Iterables are empty.
@VisibleForTesting
static <T> void consumeAsPairs(
Iterable<T> leftIterable,
Iterable<T> rightIterable,
BiConsumer<T, T> biConsumer,
BiConsumer<T, T> lastConsumer) {
if (Iterables.isEmpty(leftIterable) && Iterables.isEmpty(rightIterable)) {
lastConsumer.accept(null, null);
return;
}
Iterator<T> leftIterator = leftIterable.iterator();
Iterator<T> rightIterator = rightIterable.iterator();
while (leftIterator.hasNext()) {
T left = leftIterator.next();
boolean lastT = !leftIterator.hasNext();
T right = (lastT && rightIterator.hasNext()) ? rightIterator.next() : null;
boolean lastItem = lastT && !rightIterator.hasNext();
(lastItem ? lastConsumer : biConsumer).accept(left, right);
}
while (rightIterator.hasNext()) {
T right = rightIterator.next();
(!rightIterator.hasNext() ? lastConsumer : biConsumer).accept(null, right);
}
}
private static <T> void consumeAsPairsofStrings(
Iterable<String> leftIterable,
Iterable<String> rightIterable,
BiConsumer<String, String> biConsumer,
BiConsumer<String, String> lastConsumer) {
consumeAsPairs(
leftIterable,
rightIterable,
(s1, s2) -> biConsumer.accept(nullToEmpty(s1), nullToEmpty(s2)),
(s1, s2) -> lastConsumer.accept(nullToEmpty(s1), nullToEmpty(s2)));
}
private static <T> void consumeAsPairsofStrings(
Iterable<String> leftIterable,
Iterable<String> rightIterable,
BiConsumer<String, String> biConsumer) {
consumeAsPairsofStrings(leftIterable, rightIterable, biConsumer, biConsumer);
}
@VisibleForTesting
public ImmutableSet<BuildEventTransport> getTransports() {
return ImmutableSet.copyOf(transports);
}
private synchronized void clearEventsAndPostFinalProgress(ChainableEvent event) {
clearPendingEvents();
Iterable<String> allOut = ImmutableList.of();
Iterable<String> allErr = ImmutableList.of();
if (outErrProvider != null) {
allOut = orEmpty(outErrProvider.getOut());
allErr = orEmpty(outErrProvider.getErr());
}
consumeAsPairsofStrings(
allOut,
allErr,
(s1, s2) -> post(flushStdoutStderrEvent(s1, s2)),
(s1, s2) -> post(ProgressEvent.finalProgressUpdate(progressCount, s1, s2)));
clearAnnouncedEvents(event == null ? ImmutableList.of() : event.getChildrenEvents());
}
private synchronized void buildComplete(ChainableEvent event) {
clearEventsAndPostFinalProgress(event);
finalEventsToCome = new HashSet<>(announcedEvents);
finalEventsToCome.removeAll(postedEvents);
if (finalEventsToCome.isEmpty()) {
close();
}
}
/** Returns whether a {@link BuildEvent} should be ignored. */
public boolean shouldIgnoreBuildEvent(BuildEvent event) {
if (event instanceof ActionExecutedEvent
&& !shouldPublishActionExecutedEvent((ActionExecutedEvent) event)) {
return true;
}
if (bufferUntilPrerequisitesReceived(event) || isVacuousTestSummary(event)) {
return true;
}
if (isTestCommand && event instanceof BuildCompleteEvent) {
// In case of "bazel test" ignore the BuildCompleteEvent, as it will be followed by a
// TestingCompleteEvent that contains the correct exit code.
return !isCrash((BuildCompleteEvent) event);
}
if (event instanceof TargetParsingCompleteEvent) {
// If there is only one pattern and we have one failed pattern, then we already posted a
// pattern expanded error, so we don't post the completion event.
// TODO(ulfjack): This is brittle. It would be better to always post one PatternExpanded event
// for each pattern given on the command line instead of one event for all of them combined.
return ((TargetParsingCompleteEvent) event).getOriginalTargetPattern().size() == 1
&& !((TargetParsingCompleteEvent) event).getFailedTargetPatterns().isEmpty();
}
return false;
}
/** Returns whether an {@link ActionExecutedEvent} should be published. */
private boolean shouldPublishActionExecutedEvent(ActionExecutedEvent event) {
if (options.publishAllActions) {
return true;
}
if (event.getException() != null) {
// Publish failed actions
return true;
}
return (event.getAction() instanceof ExtraAction);
}
private boolean bufferUntilPrerequisitesReceived(BuildEvent event) {
if (!(event instanceof BuildEventWithOrderConstraint)) {
return false;
}
// Check if all prerequisite events are posted already.
for (BuildEventId prerequisiteId : ((BuildEventWithOrderConstraint) event).postedAfter()) {
if (!postedEvents.contains(prerequisiteId)) {
pendingEvents.put(prerequisiteId, event);
return true;
}
}
return false;
}
/** Return true if the test summary contains no actual test runs. */
private boolean isVacuousTestSummary(BuildEvent event) {
return event instanceof TestSummary && (((TestSummary) event).totalRuns() == 0);
}
/** A builder for {@link BuildEventStreamer}. */
public static class Builder {
private Set<BuildEventTransport> buildEventTransports;
private Reporter cmdLineReporter;
private BuildEventStreamOptions besStreamOptions;
private CountingArtifactGroupNamer artifactGroupNamer;
public Builder buildEventTransports(Set<BuildEventTransport> value) {
this.buildEventTransports = value;
return this;
}
public Builder cmdLineReporter(Reporter value) {
this.cmdLineReporter = value;
return this;
}
public Builder besStreamOptions(BuildEventStreamOptions value) {
this.besStreamOptions = value;
return this;
}
public Builder artifactGroupNamer(CountingArtifactGroupNamer value) {
this.artifactGroupNamer = value;
return this;
}
public BuildEventStreamer build() {
return new BuildEventStreamer(
checkNotNull(buildEventTransports),
checkNotNull(cmdLineReporter),
checkNotNull(besStreamOptions),
checkNotNull(artifactGroupNamer));
}
}
}