OutputRecord.java
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上传日期:2018-01-08
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- /*
- * OutputRecord.java
- *
- * 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.metrics.spi;
- import java.util.Collections;
- import java.util.Set;
- import org.apache.hadoop.metrics.spi.AbstractMetricsContext.MetricMap;
- import org.apache.hadoop.metrics.spi.AbstractMetricsContext.TagMap;
- /**
- * Represents a record of metric data to be sent to a metrics system.
- */
- public class OutputRecord {
-
- private TagMap tagMap;
- private MetricMap metricMap;
-
- /** Creates a new instance of OutputRecord */
- OutputRecord(TagMap tagMap, MetricMap metricMap) {
- this.tagMap = tagMap;
- this.metricMap = metricMap;
- }
-
- /**
- * Returns the set of tag names
- */
- public Set<String> getTagNames() {
- return Collections.unmodifiableSet(tagMap.keySet());
- }
-
- /**
- * Returns a tag object which is can be a String, Integer, Short or Byte.
- *
- * @return the tag value, or null if there is no such tag
- */
- public Object getTag(String name) {
- return tagMap.get(name);
- }
-
- /**
- * Returns the set of metric names.
- */
- public Set<String> getMetricNames() {
- return Collections.unmodifiableSet(metricMap.keySet());
- }
-
- /**
- * Returns the metric object which can be a Float, Integer, Short or Byte.
- */
- public Number getMetric(String name) {
- return metricMap.get(name);
- }
-
- }