/*
* Copyright 2013-2015 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.springframework.cloud.netflix.metrics.servo;
import com.netflix.servo.annotations.DataSourceType;
import com.netflix.servo.monitor.Monitor;
import com.netflix.servo.monitor.MonitorConfig;
import com.netflix.servo.tag.Tag;
import com.netflix.servo.tag.TagList;
/**
* @author Spencer Gibb
*/
public class HierarchicalServoMetricNaming implements ServoMetricNaming {
private static final String JMX_DOMAIN_KEY = "JmxDomain";
public static final String SERVO = "servo.";
@Override
public String asHierarchicalName(Monitor<?> monitor) {
MonitorConfig config = monitor.getConfig();
TagList tags = config.getTags();
Tag domainTag = tags.getTag(JMX_DOMAIN_KEY);
String name;
if (domainTag != null) { // jmx metric
name = handleJmxMetric(config, tags);
} else {
name = handleMetric(config, tags);
}
return name.toLowerCase();
}
private String handleMetric(MonitorConfig config, TagList tags) {
String type = cleanValue(tags.getTag(DataSourceType.KEY), false);
String instanceName = cleanValue(tags.getTag("instance"), false);
String name = cleanupIllegalCharacters(config.getName(), true);
String statistic = cleanValue(tags.getTag("statistic"), false);
StringBuilder nameBuilder = new StringBuilder();
if (type != null) {
nameBuilder.append(type).append(".");
}
nameBuilder.append(SERVO);
if (instanceName != null) {
nameBuilder.append(instanceName).append(".");
}
if (name != null) {
nameBuilder.append(name).append(".");
}
if (statistic != null) {
nameBuilder.append(statistic).append(".");
}
// remove trailing "."
nameBuilder.deleteCharAt(nameBuilder.lastIndexOf("."));
return nameBuilder.toString();
}
private String handleJmxMetric(MonitorConfig config, TagList tags) {
String domain = cleanValue(tags.getTag(JMX_DOMAIN_KEY), true);
String type = cleanValue(tags.getTag("Jmx.type"), false);
String instanceName = cleanValue(tags.getTag("Jmx.instance"), false);
String name = cleanValue(tags.getTag("Jmx.name"), true);
String fieldName = cleanupIllegalCharacters(config.getName(), false);
StringBuilder nameBuilder = new StringBuilder();
nameBuilder.append(domain).append(".");
if (type != null) {
nameBuilder.append(type).append(".");
}
nameBuilder.append(SERVO);
if (instanceName != null) {
nameBuilder.append(instanceName).append(".");
}
if (name != null) {
nameBuilder.append(name).append(".");
}
if (fieldName != null) {
nameBuilder.append(fieldName).append(".");
}
// remove trailing "."
nameBuilder.deleteCharAt(nameBuilder.lastIndexOf("."));
return nameBuilder.toString();
}
private String cleanValue(Tag tag, boolean allowPeriodsInName) {
if (tag == null) {
return null;
}
return cleanupIllegalCharacters(tag.getValue(), allowPeriodsInName);
}
private String cleanupIllegalCharacters(String s, boolean allowPeriodsInName) {
if (!allowPeriodsInName) {
s = s.replace(".", "_");
}
return s.replace(" ", "_");
}
}