public static final <T extends TransitiveInfoProvider> Iterable<T> getTransitivePrerequisites(
RuleContext ruleContext, Mode mode, final Class<T> classType) {
IterablesChain.Builder<T> builder = IterablesChain.builder();
for (String attr : TRANSITIVE_ATTRIBUTES) {
if (ruleContext.getAttribute(attr) != null) {
builder.add(ruleContext.getPrerequisites(attr, mode, classType));
}
}
return builder.build();
}
private static IterablesChain<Artifact> getArchiveInputs(
JavaTargetAttributes attributes, Function<Artifact, Artifact> derivedJarFunction) {
IterablesChain.Builder<Artifact> inputs = IterablesChain.builder();
inputs.add(
ImmutableList.copyOf(
Iterables.transform(attributes.getRuntimeClassPathForArchive(), derivedJarFunction)));
// TODO(bazel-team): Remove? Resources not used as input to singlejar action
inputs.add(ImmutableList.copyOf(attributes.getResources().values()));
inputs.add(attributes.getClassPathResources());
return inputs.build();
}
/** Builds the action as configured. */
public void build() throws InterruptedException {
ImmutableList<Artifact> classpathResources = attributes.getClassPathResources();
Set<String> classPathResourceNames = new HashSet<>();
for (Artifact artifact : classpathResources) {
String name = artifact.getExecPath().getBaseName();
if (!classPathResourceNames.add(name)) {
ruleContext.attributeError(
"classpath_resources",
"entries must have different file names (duplicate: " + name + ")");
return;
}
}
IterablesChain<Artifact> runtimeJars = runtimeJarsBuilder.build();
// TODO(kmb): Consider not using getArchiveInputs, specifically because we don't want/need to
// transform anything but the runtimeClasspath and b/c we currently do it twice here and below
IterablesChain.Builder<Artifact> inputs = IterablesChain.builder();
inputs.add(getArchiveInputs(attributes, derivedJars));
inputs.add(ImmutableList.copyOf(Iterables.transform(runtimeJars, derivedJars)));
if (runfilesMiddleman != null) {
inputs.addElement(runfilesMiddleman);
}
ImmutableList<Artifact> buildInfoArtifacts = ruleContext.getBuildInfo(JavaBuildInfoFactory.KEY);
inputs.add(buildInfoArtifacts);
Iterable<Artifact> runtimeClasspath =
Iterables.transform(
Iterables.concat(runtimeJars, attributes.getRuntimeClassPathForArchive()), derivedJars);
if (launcher != null) {
inputs.addElement(launcher);
}
CommandLine commandLine =
semantics.buildSingleJarCommandLine(
ruleContext.getConfiguration(),
outputJar,
javaStartClass,
deployManifestLines,
buildInfoArtifacts,
classpathResources,
runtimeClasspath,
includeBuildData,
compression,
launcher);
List<String> jvmArgs = ImmutableList.of("-client", SINGLEJAR_MAX_MEMORY);
ResourceSet resourceSet =
ResourceSet.createWithRamCpuIo(/*memoryMb = */ 200.0, /*cpuUsage = */ .2, /*ioUsage=*/ .2);
// If singlejar's name ends with .jar, it is Java application, otherwise it is native.
// TODO(asmundak): once b/28640279 is fixed (that is, the native singlejar is released),
// eliminate this check, allowing only native singlejar.
Artifact singlejar = getSingleJar(ruleContext);
if (singlejar.getFilename().endsWith(".jar")) {
ruleContext.registerAction(
new SpawnAction.Builder()
.addInputs(inputs.build())
.addTransitiveInputs(JavaHelper.getHostJavabaseInputs(ruleContext))
.addOutput(outputJar)
.setResources(resourceSet)
.setJarExecutable(
ruleContext.getHostConfiguration().getFragment(Jvm.class).getJavaExecutable(),
singlejar,
jvmArgs)
.setCommandLine(commandLine)
.alwaysUseParameterFile(ParameterFileType.SHELL_QUOTED)
.setProgressMessage("Building deploy jar " + outputJar.prettyPrint())
.setMnemonic("JavaDeployJar")
.setExecutionInfo(ImmutableMap.of("supports-workers", "1"))
.build(ruleContext));
} else {
ruleContext.registerAction(
new SpawnAction.Builder()
.addInputs(inputs.build())
.addTransitiveInputs(JavaHelper.getHostJavabaseInputs(ruleContext))
.addOutput(outputJar)
.setResources(resourceSet)
.setExecutable(singlejar)
.setCommandLine(commandLine)
.alwaysUseParameterFile(ParameterFileType.SHELL_QUOTED)
.setProgressMessage("Building deploy jar " + outputJar.prettyPrint())
.setMnemonic("JavaDeployJar")
.build(ruleContext));
}
}