package com.googlecode.jmxtrans.model.output;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.googlecode.jmxtrans.exceptions.LifecycleException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.List;
import java.util.Map;
/**
* {@link com.googlecode.jmxtrans.model.OutputWriter} for the <a href="https://github.com/OpenTSDB/tcollector/blob/master/collectors/0/udp_bridge.py">TCollector udp_bridge</a>.
* Largely based on StatsDWriter and OpenTSDBWriter
*
* @author Kieren Hynd
* @author Arthur Naseef
*/
public class TCollectorUDPWriter extends OpenTSDBGenericWriter {
private static final Logger log = LoggerFactory.getLogger(TCollectorUDPWriter.class);
protected SocketAddress address;
protected DatagramSocket dgSocket;
@JsonCreator
public TCollectorUDPWriter(
@JsonProperty("typeNames") ImmutableList<String> typeNames,
@JsonProperty("debug") Boolean debugEnabled,
@JsonProperty("host") String host,
@JsonProperty("port") Integer port,
@JsonProperty("tags") Map<String, String> tags,
@JsonProperty("tagName") String tagName,
@JsonProperty("mergeTypeNamesTags") Boolean mergeTypeNamesTags,
@JsonProperty("metricNamingExpression") String metricNamingExpression,
@JsonProperty("addHostnameTag") Boolean addHostnameTag,
@JsonProperty("settings") Map<String, Object> settings) throws LifecycleException, UnknownHostException {
super(typeNames, debugEnabled, host, port, tags, tagName, mergeTypeNamesTags, metricNamingExpression,
addHostnameTag, settings);
}
/**
* Do not add the hostname tag "host" with the name of the host by default since tcollector normally adds the
* hostname.
*/
@Override
protected boolean getAddHostnameTagDefault() {
return false;
}
/**
* Setup at start of the writer.
*/
@Override
public void prepareSender() throws LifecycleException {
if (host == null || port == null) {
throw new LifecycleException("Host and port for " + this.getClass().getSimpleName() + " output can't be null");
}
try {
this.dgSocket = new DatagramSocket();
this.address = new InetSocketAddress(host, port);
} catch (SocketException sockExc) {
log.error("Failed to create a datagram socket", sockExc);
throw new LifecycleException(sockExc);
}
}
/**
* Send a single metric to TCollector.
*
* @param metricLine - the line containing the metric name, value, and tags for a single metric; excludes the
* "put" keyword expected by OpenTSDB and the trailing newline character.
*/
@Override
protected void sendOutput(String metricLine) throws IOException {
DatagramPacket packet;
byte[] data;
data = metricLine.getBytes("UTF-8");
packet = new DatagramPacket(data, 0, data.length, this.address);
this.dgSocket.send(packet);
}
public static Builder builder() {
return new Builder();
}
public static final class Builder {
private final ImmutableList.Builder<String> typeNames = ImmutableList.builder();
private Boolean debugEnabled;
private String host;
private Integer port;
private final ImmutableMap.Builder<String, String> tags = ImmutableMap.builder();
private String tagName;
private Boolean mergeTypeNamesTags;
private String metricNamingExpression;
private Boolean addHostnameTag;
private Builder() {}
public Builder addTypeNames(List<String> typeNames) {
this.typeNames.addAll(typeNames);
return this;
}
public Builder addTypeName(String typeName) {
typeNames.add(typeName);
return this;
}
public Builder setDebugEnabled(boolean debugEnabled) {
this.debugEnabled = debugEnabled;
return this;
}
public Builder setHost(String host) {
this.host = host;
return this;
}
public Builder setPort(int port) {
this.port = port;
return this;
}
public Builder addTag(String key, String value) {
this.tags.put(key, value);
return this;
}
public Builder addTags(Map<String, String> tags) {
this.tags.putAll(tags);
return this;
}
public Builder setTagName(String tagName) {
this.tagName = tagName;
return this;
}
public Builder setMergeTypeNamesTags(Boolean mergeTypeNamesTags) {
this.mergeTypeNamesTags = mergeTypeNamesTags;
return this;
}
public Builder setMetricNamingExpression(String metricNamingExpression) {
this.metricNamingExpression = metricNamingExpression;
return this;
}
public Builder setAddHostnameTag(Boolean addHostnameTag) {
this.addHostnameTag = addHostnameTag;
return this;
}
public TCollectorUDPWriter build() throws LifecycleException, UnknownHostException {
return new TCollectorUDPWriter(
typeNames.build(),
debugEnabled,
host,
port,
tags.build(),
tagName,
mergeTypeNamesTags,
metricNamingExpression,
addHostnameTag,
null
);
}
}
}