| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.twill.internal.appmaster; |
| |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.Maps; |
| import org.apache.twill.api.RuntimeSpecification; |
| import org.apache.twill.api.TwillSpecification; |
| |
| import java.util.Map; |
| |
| /** |
| * This class hold information about the expected container count for each runnable. It also |
| * keep track of the timestamp where the expected count has been updated. |
| */ |
| final class ExpectedContainers { |
| |
| private final Map<String, ExpectedCount> expectedCounts; |
| |
| ExpectedContainers(TwillSpecification twillSpec) { |
| Map<String, ExpectedCount> expectedCounts = Maps.newHashMap(); |
| long now = System.currentTimeMillis(); |
| for (RuntimeSpecification runtimeSpec : twillSpec.getRunnables().values()) { |
| expectedCounts.put(runtimeSpec.getName(), |
| new ExpectedCount(runtimeSpec.getResourceSpecification().getInstances(), now)); |
| } |
| this.expectedCounts = expectedCounts; |
| } |
| |
| synchronized void setExpected(String runnable, int expected) { |
| expectedCounts.put(runnable, new ExpectedCount(expected, System.currentTimeMillis())); |
| } |
| |
| /** |
| * Updates the ExpectCount timestamp to current time. |
| * @param runnables List of runnable names. |
| */ |
| synchronized void updateRequestTime(Iterable<String> runnables) { |
| for (String runnable : runnables) { |
| ExpectedCount oldCount = expectedCounts.get(runnable); |
| expectedCounts.put(runnable, new ExpectedCount(oldCount.getCount(), System.currentTimeMillis())); |
| } |
| } |
| |
| synchronized int getExpected(String runnable) { |
| return expectedCounts.get(runnable).getCount(); |
| } |
| |
| synchronized Map<String, ExpectedCount> getAll() { |
| return ImmutableMap.copyOf(expectedCounts); |
| } |
| |
| static final class ExpectedCount { |
| private final int count; |
| private final long timestamp; |
| |
| private ExpectedCount(int count, long timestamp) { |
| this.count = count; |
| this.timestamp = timestamp; |
| } |
| |
| int getCount() { |
| return count; |
| } |
| |
| long getTimestamp() { |
| return timestamp; |
| } |
| } |
| } |