| /** |
| * 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.hadoop.metrics2.impl; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import com.google.common.collect.Lists; |
| |
| import org.apache.hadoop.metrics2.MetricsInfo; |
| import org.apache.hadoop.metrics2.MetricsCollector; |
| import org.apache.hadoop.metrics2.MetricsFilter; |
| import static org.apache.hadoop.metrics2.lib.Interns.*; |
| |
| class MetricsCollectorImpl implements MetricsCollector, |
| Iterable<MetricsRecordBuilderImpl> { |
| |
| private final List<MetricsRecordBuilderImpl> rbs = Lists.newArrayList(); |
| private MetricsFilter recordFilter, metricFilter; |
| |
| @Override |
| public MetricsRecordBuilderImpl addRecord(MetricsInfo info) { |
| boolean acceptable = recordFilter == null || |
| recordFilter.accepts(info.name()); |
| MetricsRecordBuilderImpl rb = new MetricsRecordBuilderImpl(this, info, |
| recordFilter, metricFilter, acceptable); |
| if (acceptable) rbs.add(rb); |
| return rb; |
| } |
| |
| @Override |
| public MetricsRecordBuilderImpl addRecord(String name) { |
| return addRecord(info(name, name +" record")); |
| } |
| |
| public List<MetricsRecordImpl> getRecords() { |
| List<MetricsRecordImpl> recs = Lists.newArrayListWithCapacity(rbs.size()); |
| for (MetricsRecordBuilderImpl rb : rbs) { |
| MetricsRecordImpl mr = rb.getRecord(); |
| if (mr != null) { |
| recs.add(mr); |
| } |
| } |
| return recs; |
| } |
| |
| @Override |
| public Iterator<MetricsRecordBuilderImpl> iterator() { |
| return rbs.iterator(); |
| } |
| |
| void clear() { rbs.clear(); } |
| |
| MetricsCollectorImpl setRecordFilter(MetricsFilter rf) { |
| recordFilter = rf; |
| return this; |
| } |
| |
| MetricsCollectorImpl setMetricFilter(MetricsFilter mf) { |
| metricFilter = mf; |
| return this; |
| } |
| } |