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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.buildeventstream.transports;
import static com.google.common.base.Strings.isNullOrEmpty;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSet.Builder;
import com.google.devtools.build.lib.buildeventstream.BuildEventTransport;
import com.google.devtools.build.lib.buildeventstream.PathConverter;
import com.google.devtools.build.lib.vfs.Path;
import java.io.IOException;
/** Factory used to create a Set of BuildEventTransports from BuildEventStreamOptions. */
public enum BuildEventTransportFactory {
TEXT_TRANSPORT {
@Override
protected boolean enabled(BuildEventStreamOptions options) {
return !isNullOrEmpty(options.getBuildEventTextFile());
}
@Override
protected BuildEventTransport create(BuildEventStreamOptions options,
PathConverter pathConverter) throws IOException {
return new TextFormatFileTransport(
options.getBuildEventTextFile(),
options.getBuildEventTextFilePathConversion() ? pathConverter : new NullPathConverter());
}
},
BINARY_TRANSPORT {
@Override
protected boolean enabled(BuildEventStreamOptions options) {
return !isNullOrEmpty(options.getBuildEventBinaryFile());
}
@Override
protected BuildEventTransport create(BuildEventStreamOptions options,
PathConverter pathConverter) throws IOException {
return new BinaryFormatFileTransport(
options.getBuildEventBinaryFile(),
options.getBuildEventBinaryFilePathConversion()
? pathConverter
: new NullPathConverter());
}
};
/**
* Creates a {@link ImmutableSet} of {@link BuildEventTransport} based on the specified {@link
* BuildEventStreamOptions}.
*
* @param options Options used configure and create the returned BuildEventTransports.
* @return A {@link ImmutableSet} of BuildEventTransports. This set may be empty.
* @throws IOException Exception propagated from a {@link BuildEventTransport} creation failure.
*/
public static ImmutableSet<BuildEventTransport> createFromOptions(BuildEventStreamOptions options,
PathConverter pathConverter) throws IOException {
Builder<BuildEventTransport> buildEventTransportsBuilder = ImmutableSet.builder();
for (BuildEventTransportFactory transportFactory : BuildEventTransportFactory.values()) {
if (transportFactory.enabled(options)) {
buildEventTransportsBuilder.add(transportFactory.create(options, pathConverter));
}
}
return buildEventTransportsBuilder.build();
}
/** Returns true if this factory BuildEventTransport is enabled by the specified options. */
protected abstract boolean enabled(BuildEventStreamOptions options);
/** Creates a BuildEventTransport from the specified options. */
protected abstract BuildEventTransport create(BuildEventStreamOptions options,
PathConverter pathConverter) throws IOException;
private static class NullPathConverter implements PathConverter {
@Override
public String apply(Path path) {
return "file://" + path;
}
}
}
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