/*
* Copyright 2016-present Facebook, Inc.
*
* 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.facebook.buck.lua;
import com.facebook.buck.rules.AbstractBuildRule;
import com.facebook.buck.rules.AddToRuleKey;
import com.facebook.buck.rules.BuildContext;
import com.facebook.buck.rules.BuildRuleParams;
import com.facebook.buck.rules.BuildableContext;
import com.facebook.buck.rules.ExplicitBuildTargetSourcePath;
import com.facebook.buck.rules.SourcePath;
import com.facebook.buck.rules.SourcePathResolver;
import com.facebook.buck.rules.Tool;
import com.facebook.buck.shell.ShellStep;
import com.facebook.buck.step.ExecutionContext;
import com.facebook.buck.step.Step;
import com.facebook.buck.step.fs.MkdirStep;
import com.facebook.buck.step.fs.RmStep;
import com.facebook.buck.util.ObjectMappers;
import com.google.common.base.Functions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import java.io.IOException;
import java.nio.file.Path;
import java.util.Optional;
/** Builds a Lua executable into a standalone package using a given packager tool. */
public class LuaStandaloneBinary extends AbstractBuildRule {
@AddToRuleKey private final Tool builder;
@AddToRuleKey private final ImmutableList<String> builderArgs;
@AddToRuleKey(stringify = true)
private final Path output;
@AddToRuleKey private final Optional<SourcePath> starter;
@AddToRuleKey private final LuaPackageComponents components;
@AddToRuleKey private final String mainModule;
@AddToRuleKey private final Tool lua;
private final boolean cache;
public LuaStandaloneBinary(
BuildRuleParams buildRuleParams,
Tool builder,
ImmutableList<String> builderArgs,
Path output,
Optional<SourcePath> starter,
LuaPackageComponents components,
String mainModule,
Tool lua,
boolean cache) {
super(buildRuleParams);
this.builder = builder;
this.builderArgs = builderArgs;
this.output = output;
this.starter = starter;
this.components = components;
this.mainModule = mainModule;
this.lua = lua;
this.cache = cache;
}
@Override
public ImmutableList<Step> getBuildSteps(
BuildContext context, BuildableContext buildableContext) {
ImmutableList.Builder<Step> steps = ImmutableList.builder();
buildableContext.recordArtifact(output);
// Make sure the parent directory exists.
steps.add(MkdirStep.of(getProjectFilesystem(), output.getParent()));
// Delete any other pex that was there (when switching between pex styles).
steps.add(RmStep.of(getProjectFilesystem(), output).withRecursive(true));
SourcePathResolver resolver = context.getSourcePathResolver();
steps.add(
new ShellStep(getProjectFilesystem().getRootPath()) {
@Override
protected Optional<String> getStdin(ExecutionContext context) {
try {
return Optional.of(
ObjectMappers.WRITER.writeValueAsString(
ImmutableMap.of(
"modules",
Maps.transformValues(
components.getModules(),
Functions.compose(Object::toString, resolver::getAbsolutePath)),
"pythonModules",
Maps.transformValues(
components.getPythonModules(),
Functions.compose(Object::toString, resolver::getAbsolutePath)),
"nativeLibraries",
Maps.transformValues(
components.getNativeLibraries(),
Functions.compose(Object::toString, resolver::getAbsolutePath)))));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
protected ImmutableList<String> getShellCommandInternal(ExecutionContext context) {
ImmutableList.Builder<String> command = ImmutableList.builder();
command.addAll(builder.getCommandPrefix(resolver));
command.addAll(builderArgs);
command.add("--entry-point", mainModule);
command.add("--interpreter");
if (starter.isPresent()) {
command.add(resolver.getAbsolutePath(starter.get()).toString());
} else {
command.add(lua.getCommandPrefix(resolver).get(0));
}
command.add(getProjectFilesystem().resolve(output).toString());
return command.build();
}
@Override
public String getShortName() {
return "lua_package";
}
});
return steps.build();
}
@Override
public SourcePath getSourcePathToOutput() {
return new ExplicitBuildTargetSourcePath(getBuildTarget(), output);
}
@Override
public boolean isCacheable() {
return cache;
}
}