com.facebook.buck.rules.modern.builders.OutOfProcessIsolatedBuilder.java Source code

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Here is the source code for com.facebook.buck.rules.modern.builders.OutOfProcessIsolatedBuilder.java

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/*
 * Copyright 2018-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.rules.modern.builders;

import com.facebook.buck.core.model.BuildId;
import com.facebook.buck.core.util.log.Logger;
import com.facebook.buck.event.BuckEventBus;
import com.facebook.buck.event.DefaultBuckEventBus;
import com.facebook.buck.step.StepFailedException;
import com.facebook.buck.util.Ansi;
import com.facebook.buck.util.Console;
import com.facebook.buck.util.Verbosity;
import com.facebook.buck.util.timing.DefaultClock;
import com.google.common.base.Joiner;
import com.google.common.base.Preconditions;
import com.google.common.hash.HashCode;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;

/** This implements out of process rule execution. */
public class OutOfProcessIsolatedBuilder {
    private static final Logger LOG = Logger.get(OutOfProcessIsolatedBuilder.class);

    /**
     * Entry point for out of process rule execution. This should be run within the build root
     * directory (i.e. within the root cell's root).
     *
     * <p>Expected usage: {@code this_binary <build_root> <root_cell> <rule_hash> } where build_root
     * is the shared cell path ancestor and contains the rule_hash serialized data.
     */
    public static void main(String[] args) throws IOException, StepFailedException, InterruptedException {
        LOG.info(String.format("Started buck at time [%s].", new java.util.Date()));
        Thread.setDefaultUncaughtExceptionHandler((thread, error) -> {
            error.printStackTrace(System.err);
            System.exit(1);
        });
        Preconditions.checkState(args.length == 3, "Expected three arguments, got %d: <%s>", args.length,
                Joiner.on(",").join(args));
        Path buildDir = Paths.get(args[0]);
        Path projectRoot = Paths.get(args[1]);
        HashCode hash = HashCode.fromString(args[2]);
        new IsolatedBuildableBuilder(buildDir, projectRoot) {
            @Override
            protected Console createConsole() {
                return new Console(Verbosity.STANDARD_INFORMATION, System.out, System.err, Ansi.withoutTty());
            }

            @Override
            protected BuckEventBus createEventBus(Console console) {
                return new DefaultBuckEventBus(new DefaultClock(), new BuildId("whatever"));
            }
        }.build(hash);
        System.exit(0);
    }
}