/*
 * Copyright 2015 the original author or authors.
 *
 * 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 org.gradle.integtests.tooling.fixture

import groovy.transform.stc.ClosureParams
import groovy.transform.stc.SimpleType
import org.gradle.tooling.CancellationToken
import org.gradle.tooling.CancellationTokenSource
import org.gradle.tooling.GradleConnector
import org.gradle.tooling.ProjectConnection
import org.junit.rules.ExternalResource

class GradleBuildCancellation extends ExternalResource implements CancellationTokenSource {
    CancellationTokenSource cancellationTokenSource

    protected void before() throws Throwable {
        cancellationTokenSource = GradleConnector.newCancellationTokenSource()
    }

    protected void after() {
        cancel()
    }

    @Override
    void cancel() {
        cancellationTokenSource.cancel()
    }

    @Override
    CancellationToken token() {
        return cancellationTokenSource.token()
    }

    public <T> T withCancellation(@DelegatesTo(ProjectConnection) @ClosureParams(value = SimpleType, options = ["org.gradle.tooling.CancellationToken"]) Closure<T> cl) {
        try {
            cancellationTokenSource = GradleConnector.newCancellationTokenSource()
            return cl.call(token())
        } finally {
            cancel();
        }
    }
}
