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// Copyright 2014 Google Inc. 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.analysis;
import com.google.common.base.Preconditions;
import com.google.common.collect.Iterables;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.collect.nestedset.Order;
import com.google.devtools.build.skyframe.SkyValue;
/**
* This event is fired as soon as a target is either built or fails.
*/
public final class TargetCompleteEvent implements SkyValue {
private final ConfiguredTarget target;
private final NestedSet<Label> rootCauses;
private TargetCompleteEvent(ConfiguredTarget target, NestedSet<Label> rootCauses) {
this.target = target;
this.rootCauses = (rootCauses == null)
? NestedSetBuilder.<Label>emptySet(Order.STABLE_ORDER)
: rootCauses;
}
/**
* Construct a successful target completion event.
*/
public static TargetCompleteEvent createSuccessful(ConfiguredTarget ct) {
return new TargetCompleteEvent(ct, null);
}
/**
* Construct a target completion event for a failed target, with the given non-empty root causes.
*/
public static TargetCompleteEvent createFailed(ConfiguredTarget ct, NestedSet<Label> rootCauses) {
Preconditions.checkArgument(!Iterables.isEmpty(rootCauses));
return new TargetCompleteEvent(ct, rootCauses);
}
/**
* Returns the target associated with the event.
*/
public ConfiguredTarget getTarget() {
return target;
}
/**
* Determines whether the target has failed or succeeded.
*/
public boolean failed() {
return !rootCauses.isEmpty();
}
/**
* Get the root causes of the target. May be empty.
*/
public Iterable<Label> getRootCauses() {
return rootCauses;
}
}
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