MetricsRecordImpl.java
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上传日期:2018-01-08
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- /*
- * MetricsRecordImpl.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.LinkedHashMap;
- import java.util.Map;
- import org.apache.hadoop.metrics.MetricsRecord;
- import org.apache.hadoop.metrics.spi.AbstractMetricsContext.TagMap;
- /**
- * An implementation of MetricsRecord. Keeps a back-pointer to the context
- * from which it was created, and delegates back to it on <code>update</code>
- * and <code>remove()</code>.
- */
- public class MetricsRecordImpl implements MetricsRecord {
-
- private TagMap tagTable = new TagMap();
- private Map<String,MetricValue> metricTable = new LinkedHashMap<String,MetricValue>();
-
- private String recordName;
- private AbstractMetricsContext context;
-
-
- /** Creates a new instance of FileRecord */
- protected MetricsRecordImpl(String recordName, AbstractMetricsContext context)
- {
- this.recordName = recordName;
- this.context = context;
- }
-
- /**
- * Returns the record name.
- *
- * @return the record name
- */
- public String getRecordName() {
- return recordName;
- }
-
- /**
- * Sets the named tag to the specified value.
- *
- * @param tagName name of the tag
- * @param tagValue new value of the tag
- * @throws MetricsException if the tagName conflicts with the configuration
- */
- public void setTag(String tagName, String tagValue) {
- if (tagValue == null) {
- tagValue = "";
- }
- tagTable.put(tagName, tagValue);
- }
-
- /**
- * Sets the named tag to the specified value.
- *
- * @param tagName name of the tag
- * @param tagValue new value of the tag
- * @throws MetricsException if the tagName conflicts with the configuration
- */
- public void setTag(String tagName, int tagValue) {
- tagTable.put(tagName, Integer.valueOf(tagValue));
- }
-
- /**
- * Sets the named tag to the specified value.
- *
- * @param tagName name of the tag
- * @param tagValue new value of the tag
- * @throws MetricsException if the tagName conflicts with the configuration
- */
- public void setTag(String tagName, long tagValue) {
- tagTable.put(tagName, Long.valueOf(tagValue));
- }
-
- /**
- * Sets the named tag to the specified value.
- *
- * @param tagName name of the tag
- * @param tagValue new value of the tag
- * @throws MetricsException if the tagName conflicts with the configuration
- */
- public void setTag(String tagName, short tagValue) {
- tagTable.put(tagName, Short.valueOf(tagValue));
- }
-
- /**
- * Sets the named tag to the specified value.
- *
- * @param tagName name of the tag
- * @param tagValue new value of the tag
- * @throws MetricsException if the tagName conflicts with the configuration
- */
- public void setTag(String tagName, byte tagValue) {
- tagTable.put(tagName, Byte.valueOf(tagValue));
- }
-
- /**
- * Removes any tag of the specified name.
- */
- public void removeTag(String tagName) {
- tagTable.remove(tagName);
- }
-
- /**
- * Sets the named metric to the specified value.
- *
- * @param metricName name of the metric
- * @param metricValue new value of the metric
- * @throws MetricsException if the metricName or the type of the metricValue
- * conflicts with the configuration
- */
- public void setMetric(String metricName, int metricValue) {
- setAbsolute(metricName, Integer.valueOf(metricValue));
- }
-
- /**
- * Sets the named metric to the specified value.
- *
- * @param metricName name of the metric
- * @param metricValue new value of the metric
- * @throws MetricsException if the metricName or the type of the metricValue
- * conflicts with the configuration
- */
- public void setMetric(String metricName, long metricValue) {
- setAbsolute(metricName, Long.valueOf(metricValue));
- }
-
- /**
- * Sets the named metric to the specified value.
- *
- * @param metricName name of the metric
- * @param metricValue new value of the metric
- * @throws MetricsException if the metricName or the type of the metricValue
- * conflicts with the configuration
- */
- public void setMetric(String metricName, short metricValue) {
- setAbsolute(metricName, Short.valueOf(metricValue));
- }
-
- /**
- * Sets the named metric to the specified value.
- *
- * @param metricName name of the metric
- * @param metricValue new value of the metric
- * @throws MetricsException if the metricName or the type of the metricValue
- * conflicts with the configuration
- */
- public void setMetric(String metricName, byte metricValue) {
- setAbsolute(metricName, Byte.valueOf(metricValue));
- }
-
- /**
- * Sets the named metric to the specified value.
- *
- * @param metricName name of the metric
- * @param metricValue new value of the metric
- * @throws MetricsException if the metricName or the type of the metricValue
- * conflicts with the configuration
- */
- public void setMetric(String metricName, float metricValue) {
- setAbsolute(metricName, new Float(metricValue));
- }
-
- /**
- * Increments the named metric by the specified value.
- *
- * @param metricName name of the metric
- * @param metricValue incremental value
- * @throws MetricsException if the metricName or the type of the metricValue
- * conflicts with the configuration
- */
- public void incrMetric(String metricName, int metricValue) {
- setIncrement(metricName, Integer.valueOf(metricValue));
- }
-
- /**
- * Increments the named metric by the specified value.
- *
- * @param metricName name of the metric
- * @param metricValue incremental value
- * @throws MetricsException if the metricName or the type of the metricValue
- * conflicts with the configuration
- */
- public void incrMetric(String metricName, long metricValue) {
- setIncrement(metricName, Long.valueOf(metricValue));
- }
-
- /**
- * Increments the named metric by the specified value.
- *
- * @param metricName name of the metric
- * @param metricValue incremental value
- * @throws MetricsException if the metricName or the type of the metricValue
- * conflicts with the configuration
- */
- public void incrMetric(String metricName, short metricValue) {
- setIncrement(metricName, Short.valueOf(metricValue));
- }
-
- /**
- * Increments the named metric by the specified value.
- *
- * @param metricName name of the metric
- * @param metricValue incremental value
- * @throws MetricsException if the metricName or the type of the metricValue
- * conflicts with the configuration
- */
- public void incrMetric(String metricName, byte metricValue) {
- setIncrement(metricName, Byte.valueOf(metricValue));
- }
-
- /**
- * Increments the named metric by the specified value.
- *
- * @param metricName name of the metric
- * @param metricValue incremental value
- * @throws MetricsException if the metricName or the type of the metricValue
- * conflicts with the configuration
- */
- public void incrMetric(String metricName, float metricValue) {
- setIncrement(metricName, new Float(metricValue));
- }
-
- private void setAbsolute(String metricName, Number metricValue) {
- metricTable.put(metricName, new MetricValue(metricValue, MetricValue.ABSOLUTE));
- }
-
- private void setIncrement(String metricName, Number metricValue) {
- metricTable.put(metricName, new MetricValue(metricValue, MetricValue.INCREMENT));
- }
-
- /**
- * Updates the table of buffered data which is to be sent periodically.
- * If the tag values match an existing row, that row is updated;
- * otherwise, a new row is added.
- */
- public void update() {
- context.update(this);
- }
-
- /**
- * Removes the row, if it exists, in the buffered data table having tags
- * that equal the tags that have been set on this record.
- */
- public void remove() {
- context.remove(this);
- }
- TagMap getTagTable() {
- return tagTable;
- }
- Map<String, MetricValue> getMetricTable() {
- return metricTable;
- }
- }