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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.exec;
import com.google.common.base.Predicate;
import com.google.common.base.Predicates;
import com.google.devtools.build.lib.actions.Action;
import com.google.devtools.build.lib.rules.test.TestRunnerAction;
/**
* Class implements --check_???_up_to_date execution filter predicate
* that prevents certain actions from being executed (thus aborting
* the build if action is not up-to-date).
*/
public final class CheckUpToDateFilter implements Predicate<Action> {
/**
* Determines an execution filter based on the --check_up_to_date and
* --check_tests_up_to_date options. Returns a singleton if possible.
*/
public static Predicate<Action> fromOptions(ExecutionOptions options) {
if (!options.testCheckUpToDate && !options.checkUpToDate) {
return Predicates.alwaysTrue();
}
return new CheckUpToDateFilter(options);
}
private final boolean allowBuildActionExecution;
private final boolean allowTestActionExecution;
/**
* Creates new execution filter based on --check_up_to_date and
* --check_tests_up_to_date options.
*/
private CheckUpToDateFilter(ExecutionOptions options) {
// If we want to check whether test is up-to-date, we should disallow
// test execution.
this.allowTestActionExecution = !options.testCheckUpToDate;
// Build action execution should be prohibited in two cases - if we are
// checking whether build is up-to-date or if we are checking that tests
// are up-to-date (and test execution is not allowed).
this.allowBuildActionExecution = allowTestActionExecution && !options.checkUpToDate;
}
/**
* @return true if actions' execution is allowed, false - otherwise
*/
@Override
public boolean apply(Action action) {
if (action instanceof AlwaysOutOfDateAction) {
// Always allow fileset manifest action to execute because it identifies files included
// in the fileset during execution time.
return true;
} else if (action instanceof TestRunnerAction) {
return allowTestActionExecution;
} else {
return allowBuildActionExecution;
}
}
}
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