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// Copyright 2018 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.skyframe;
import com.google.devtools.build.lib.cmdline.PackageIdentifier;
import com.google.devtools.build.lib.packages.NoSuchPackageException;
import com.google.devtools.build.lib.packages.Package;
import com.google.devtools.build.skyframe.SkyFunction;
import com.google.devtools.build.skyframe.SkyKey;
import com.google.devtools.build.skyframe.SkyValue;
import javax.annotation.Nullable;
/** {@link SkyFunction} for {@link PackageErrorMessageValue}. */
public class PackageErrorMessageFunction implements SkyFunction {
@Nullable
@Override
public SkyValue compute(SkyKey skyKey, Environment env) throws InterruptedException {
PackageIdentifier pkgId = (PackageIdentifier) skyKey.argument();
PackageValue pkgValue;
try {
pkgValue =
(PackageValue) env.getValueOrThrow(PackageValue.key(pkgId), NoSuchPackageException.class);
} catch (NoSuchPackageException e) {
return PackageErrorMessageValue.ofNoSuchPackageException(e.getMessage());
}
if (pkgValue == null) {
return null;
}
Package pkg = pkgValue.getPackage();
return pkg.containsErrors()
? PackageErrorMessageValue.ofPackageWithErrors()
: PackageErrorMessageValue.ofPackageWithNoErrors();
}
@Nullable
@Override
public String extractTag(SkyKey skyKey) {
return null;
}
}
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