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// Copyright 2014 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.buildtool;
import static com.google.common.collect.ImmutableSet.toImmutableSet;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.ConfiguredAspect;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.FileProvider;
import com.google.devtools.build.lib.analysis.OutputGroupInfo;
import com.google.devtools.build.lib.analysis.ProviderCollection;
import com.google.devtools.build.lib.analysis.TopLevelArtifactContext;
import com.google.devtools.build.lib.analysis.TopLevelArtifactHelper;
import com.google.devtools.build.lib.analysis.TransitiveInfoCollection;
import com.google.devtools.build.lib.analysis.configuredtargets.OutputFileConfiguredTarget;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.exec.ExecutionOptions;
import com.google.devtools.build.lib.runtime.BlazeRuntime;
import com.google.devtools.build.lib.runtime.CommandEnvironment;
import com.google.devtools.build.lib.skyframe.AspectKeyCreator.AspectKey;
import com.google.devtools.build.lib.skyframe.ConfiguredTargetKey;
import com.google.devtools.build.lib.util.io.OutErr;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Objects;
/**
* Handles --show_result and --experimental_show_artifacts.
*/
class BuildResultPrinter {
private final CommandEnvironment env;
BuildResultPrinter(CommandEnvironment env) {
this.env = env;
}
/**
* Shows the result of the build. Information includes the list of up-to-date and failed targets
* and list of output artifacts for successful targets
*
* <p>This corresponds to the --show_result flag.
*/
void showBuildResult(
BuildRequest request,
BuildResult result,
Collection<ConfiguredTarget> configuredTargets,
Collection<ConfiguredTarget> configuredTargetsToSkip,
ImmutableMap<AspectKey, ConfiguredAspect> aspects) {
// NOTE: be careful what you print! We don't want to create a consistency
// problem where the summary message and the exit code disagree. The logic
// here is already complex.
boolean ok =
outputTargets(request, result, configuredTargets, configuredTargetsToSkip, aspects);
if (!ok && !request.getOptions(ExecutionOptions.class).verboseFailures) {
request
.getOutErr()
.printErr("Use --verbose_failures to see the command lines of failed build steps.\n");
}
}
/**
* Outputs the targets, omitting values with {@code (nothing to build)} when it allows staying
* under the --show_result limit.
*
* <p>This method exits early if there are too many results.
*
* @return {@code true} if no errors were detected among the results inspected, this can be a
* false positive on early exit.
*/
private boolean outputTargets(
BuildRequest request,
BuildResult result,
Collection<ConfiguredTarget> configuredTargets,
Collection<ConfiguredTarget> configuredTargetsToSkip,
ImmutableMap<AspectKey, ConfiguredAspect> aspects) {
BlazeRuntime runtime = env.getRuntime();
String productName = runtime.getProductName();
PathPrettyPrinter prettyPrinter =
new PathPrettyPrinter(
request.getBuildOptions().getSymlinkPrefix(productName),
result.getConvenienceSymlinks());
OutErr outErr = request.getOutErr();
// Filter and split aspects to display.
ImmutableSet<String> aspectsToIgnore =
ImmutableSet.copyOf(request.getBuildOptions().hideAspectResults);
PartitionedAspectKeys partitionedAspectKeys =
partitionAspectKeys(
request.useValidationAspect(),
aspects.keySet().stream()
.filter(k -> !aspectsToIgnore.contains(k.getAspectClass().getName()))
.collect(toImmutableSet()));
Collection<ConfiguredTarget> targetsToPrint = filterTargetsToPrint(configuredTargets);
TopLevelArtifactContext context = request.getTopLevelArtifactContext();
// `essentialBudget` tracks the number of non-empty results that can be printed.
int essentialBudget = request.getBuildOptions().maxResultTargets;
// Splits the targets we care about into three buckets. Targets are only considered successful
// if they and their validation aspects succeeded.
var skipped = new ArrayList<ConfiguredTarget>();
var succeeded = new ArrayList<ConfiguredTarget>();
var artifactsToPrintPerTarget = new ArrayList<ArrayList<Artifact>>();
var failed = new ArrayList<ConfiguredTarget>();
essentialBudget =
splitConfiguredTargetsByResultReturnRemaining(
targetsToPrint,
result,
context,
configuredTargetsToSkip,
partitionedAspectKeys.validationAspects,
skipped,
succeeded,
artifactsToPrintPerTarget,
failed,
essentialBudget);
if (essentialBudget < 0) {
return failed.isEmpty();
}
// Splits the aspects we care about into two buckets.
var successfulAspects = new ArrayList<AspectKey>();
var failedAspects = new ArrayList<AspectKey>();
var artifactsToPrintPerAspect = new ArrayList<ArrayList<Artifact>>(successfulAspects.size());
essentialBudget =
splitAspectsByResultReturnRemaining(
partitionedAspectKeys.aspectsToPrint,
aspects,
context,
result.getSuccessfulAspects(),
successfulAspects,
artifactsToPrintPerAspect,
failedAspects,
essentialBudget);
if (essentialBudget < 0) {
return failed.isEmpty() && failedAspects.isEmpty();
}
// Omits "nothing to build" values if it enables staying under --show_result.
boolean omitNothingToBuild =
(targetsToPrint.size() + partitionedAspectKeys.aspectsToPrint.size())
> request.getBuildOptions().maxResultTargets;
outputConfiguredTargets(
outErr,
prettyPrinter,
succeeded,
artifactsToPrintPerTarget,
failed,
skipped,
omitNothingToBuild);
outputAspects(
outErr,
prettyPrinter,
successfulAspects,
artifactsToPrintPerAspect,
failedAspects,
omitNothingToBuild);
return failed.isEmpty() && failedAspects.isEmpty();
}
private static int splitConfiguredTargetsByResultReturnRemaining(
Collection<ConfiguredTarget> configuredTargets,
BuildResult result,
TopLevelArtifactContext context,
Collection<ConfiguredTarget> configuredTargetsToSkip,
ImmutableList<AspectKey> validationAspects,
ArrayList<ConfiguredTarget> skipped,
ArrayList<ConfiguredTarget> succeeded,
ArrayList<ArrayList<Artifact>> artifactsToPrintPerTarget,
ArrayList<ConfiguredTarget> failed,
int essentialBudget) {
ImmutableSet<ConfiguredTargetKey> validationFailures =
validationAspects.stream()
.filter(k -> !result.getSuccessfulAspects().contains(k))
.map(AspectKey::getBaseConfiguredTargetKey)
.collect(toImmutableSet());
Collection<ConfiguredTarget> successfulTargets = result.getSuccessfulTargets();
for (ConfiguredTarget target : configuredTargets) {
if (configuredTargetsToSkip.contains(target)) {
skipped.add(target);
if (--essentialBudget < 0) {
return essentialBudget;
}
} else if (successfulTargets.contains(target)
&& !validationFailures.contains(ConfiguredTargetKey.fromConfiguredTarget(target))) {
succeeded.add(target);
ArrayList<Artifact> artifactsToPrint = getArtifactsToPrint(target, context);
artifactsToPrintPerTarget.add(artifactsToPrint);
if (!artifactsToPrint.isEmpty()) {
if (--essentialBudget < 0) {
return essentialBudget;
}
}
} else {
failed.add(target);
if (--essentialBudget < 0) {
return essentialBudget;
}
}
}
return essentialBudget;
}
private static ArrayList<Artifact> getArtifactsToPrint(
ProviderCollection target, TopLevelArtifactContext context) {
var artifacts = new ArrayList<Artifact>();
// For up-to-date targets report generated artifacts, but only if they have associated action
// and not middleman artifacts.
for (Artifact artifact :
TopLevelArtifactHelper.getAllArtifactsToBuild(target, context)
.getImportantArtifacts()
.toList()) {
if (TopLevelArtifactHelper.shouldDisplay(artifact)) {
artifacts.add(artifact);
}
}
return artifacts;
}
private static int splitAspectsByResultReturnRemaining(
Collection<AspectKey> aspectsToPrint,
ImmutableMap<AspectKey, ConfiguredAspect> aspects,
TopLevelArtifactContext context,
ImmutableSet<AspectKey> successfulAspects,
ArrayList<AspectKey> succeeded,
ArrayList<ArrayList<Artifact>> artifactsToPrintPerAspect,
ArrayList<AspectKey> failed,
int essentialBudget) {
for (AspectKey aspect : aspectsToPrint) {
if (successfulAspects.contains(aspect)) {
succeeded.add(aspect);
ArrayList<Artifact> artifactsToPrint = getArtifactsToPrint(aspects.get(aspect), context);
artifactsToPrintPerAspect.add(artifactsToPrint);
if (!artifactsToPrint.isEmpty()) {
if (--essentialBudget < 0) {
return essentialBudget;
}
}
} else {
failed.add(aspect);
if (--essentialBudget < 0) {
return essentialBudget;
}
}
}
return essentialBudget;
}
private static void outputConfiguredTargets(
OutErr outErr,
PathPrettyPrinter prettyPrinter,
ArrayList<ConfiguredTarget> succeeded,
ArrayList<ArrayList<Artifact>> artifactsToPrintPerTarget,
ArrayList<ConfiguredTarget> failed,
ArrayList<ConfiguredTarget> skipped,
boolean omitNothingToBuild) {
for (ConfiguredTarget target : skipped) {
outErr.printErr("Target " + target.getLabel() + " was skipped\n");
}
for (int i = 0; i < succeeded.size(); ++i) {
ConfiguredTarget target = succeeded.get(i);
Label label = target.getLabel();
ArrayList<Artifact> artifacts = artifactsToPrintPerTarget.get(i);
if (artifacts.isEmpty()) {
if (!omitNothingToBuild) {
outErr.printErr("Target " + label + " up-to-date (nothing to build)\n");
}
continue;
}
outErr.printErr("Target " + label + " up-to-date:\n");
for (Artifact artifact : artifacts) {
outErr.printErrLn(formatArtifactForShowResults(prettyPrinter, artifact));
}
}
for (ConfiguredTarget target : failed) {
outErr.printErr("Target " + target.getLabel() + " failed to build\n");
// For failed compilation, it is still useful to examine temp artifacts, (ie, preprocessed and
// assembler files).
OutputGroupInfo topLevelProvider = OutputGroupInfo.get(target);
if (topLevelProvider != null) {
for (Artifact temp : topLevelProvider.getOutputGroup(OutputGroupInfo.TEMP_FILES).toList()) {
if (temp.getPath().exists()) {
outErr.printErrLn(
" See temp at " + prettyPrinter.getPrettyPath(temp.getPath().asFragment()));
}
}
}
}
}
private static void outputAspects(
OutErr outErr,
PathPrettyPrinter prettyPrinter,
ArrayList<AspectKey> succeeded,
ArrayList<ArrayList<Artifact>> artifactsToPrintPerAspect,
ArrayList<AspectKey> failed,
boolean omitNothingToBuild) {
for (int i = 0; i < succeeded.size(); ++i) {
AspectKey aspect = succeeded.get(i);
Label label = aspect.getLabel();
String aspectName = aspect.getAspectClass().getName();
ArrayList<Artifact> artifacts = artifactsToPrintPerAspect.get(i);
if (artifacts.isEmpty()) {
if (!omitNothingToBuild) {
outErr.printErr(
"Aspect " + aspectName + " of " + label + " up-to-date (nothing to build)\n");
}
continue;
}
outErr.printErr("Aspect " + aspectName + " of " + label + " up-to-date:\n");
for (Artifact artifact : artifacts) {
outErr.printErrLn(formatArtifactForShowResults(prettyPrinter, artifact));
}
}
for (AspectKey aspect : failed) {
Label label = aspect.getLabel();
String aspectName = aspect.getAspectClass().getName();
outErr.printErr("Aspect " + aspectName + " of " + label + " failed to build\n");
}
}
private static String formatArtifactForShowResults(
PathPrettyPrinter prettyPrinter, Artifact artifact) {
return " " + prettyPrinter.getPrettyPath(artifact.getPath().asFragment());
}
/**
* Returns a list of configured targets that should participate in printing.
*
* <p>Hidden rules and other inserted targets are ignored.
*/
private Collection<ConfiguredTarget> filterTargetsToPrint(
Collection<ConfiguredTarget> configuredTargets) {
ImmutableList.Builder<ConfiguredTarget> result = ImmutableList.builder();
for (ConfiguredTarget configuredTarget : configuredTargets) {
if (!TopLevelArtifactHelper.shouldConsiderForDisplay(configuredTarget)) {
continue;
}
if (configuredTarget instanceof OutputFileConfiguredTarget) {
// Suppress display of generated files (because they appear underneath
// their generating rule), EXCEPT those ones which are not part of the
// filesToBuild of their generating rule (e.g. .par, _deploy.jar
// files), OR when a user explicitly requests an output file but not
// its rule.
TransitiveInfoCollection generatingRule =
((OutputFileConfiguredTarget) configuredTarget).getGeneratingRule();
if (generatingRule
.getProvider(FileProvider.class)
.getFilesToBuild()
.toSet()
.containsAll(
configuredTarget.getProvider(FileProvider.class).getFilesToBuild().toList())
&& configuredTargets.contains(generatingRule)) {
continue;
}
}
result.add(configuredTarget);
}
return result.build();
}
/** Splits aspects based on whether they are validation aspects. */
private static PartitionedAspectKeys partitionAspectKeys(
boolean useValidationAspects, ImmutableSet<AspectKey> keys) {
if (!useValidationAspects) {
return new PartitionedAspectKeys(keys, ImmutableList.of());
}
var aspectsToPrintBuilder = ImmutableSet.<AspectKey>builder();
var validationAspectsBuilder = ImmutableList.<AspectKey>builder();
for (AspectKey key : keys) {
if (Objects.equals(key.getAspectClass().getName(), BuildRequest.VALIDATION_ASPECT_NAME)) {
validationAspectsBuilder.add(key);
} else {
aspectsToPrintBuilder.add(key);
}
}
return new PartitionedAspectKeys(
aspectsToPrintBuilder.build(), validationAspectsBuilder.build());
}
private static class PartitionedAspectKeys {
private final ImmutableSet<AspectKey> aspectsToPrint;
private final ImmutableList<AspectKey> validationAspects;
private PartitionedAspectKeys(
ImmutableSet<AspectKey> aspectsToPrint, ImmutableList<AspectKey> validationAspects) {
this.aspectsToPrint = aspectsToPrint;
this.validationAspects = validationAspects;
}
}
}