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SiteWhere Siddhi CEP Integration
/*
* Copyright (c) SiteWhere, LLC. All rights reserved. http://www.sitewhere.com
*
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package com.sitewhere.siddhi;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.log4j.Logger;
import org.wso2.carbon.databridge.agent.thrift.DataPublisher;
import org.wso2.carbon.databridge.agent.thrift.exception.AgentException;
import org.wso2.carbon.databridge.commons.Attribute;
import org.wso2.carbon.databridge.commons.AttributeType;
import org.wso2.carbon.databridge.commons.Event;
import org.wso2.carbon.databridge.commons.StreamDefinition;
import org.wso2.carbon.databridge.commons.exception.AuthenticationException;
import org.wso2.carbon.databridge.commons.exception.MalformedStreamDefinitionException;
import org.wso2.carbon.databridge.commons.exception.TransportException;
import com.sitewhere.SiteWhere;
import com.sitewhere.device.event.processor.FilteredOutboundEventProcessor;
import com.sitewhere.spi.SiteWhereException;
import com.sitewhere.spi.device.event.IDeviceAlert;
import com.sitewhere.spi.device.event.IDeviceLocation;
import com.sitewhere.spi.device.event.IDeviceMeasurements;
/**
* Sends SiteWhere events to an external WSO2 CEP instance.
*
* @author Derek
*/
public class Wso2CepEventProcessor extends FilteredOutboundEventProcessor {
/** Static logger instance */
private static Logger LOGGER = Logger.getLogger(Wso2CepEventProcessor.class);
/** Measurements stream id */
private static final String MEAUREMENTS_STREAM_ID = "com.sitewhere.Measurements";
/** Locations stream id */
private static final String LOCATIONS_STREAM_ID = "com.sitewhere.Locations";
/** Alerts stream id */
private static final String ALERTS_STREAM_ID = "com.sitewhere.Alerts";
/** Protocol for external Siddhi server */
private String siddhiProtocol = "tcp";
/** Hostname for external Siddhi server */
private String siddhiHost = "localhost";
/** Port number for external Siddhi server */
private int siddhiPort = 7611;
/** Username for external Siddhi server */
private String siddhiUsername = "admin";
/** Password for external Siddhi server */
private String siddhiPassword = "admin";
/** WSO2 data publisher */
private DataPublisher publisher;
/** Stream for measurements */
private String streamMeasurements;
/** Stream for locations */
private String streamLocations;
/** Stream for alerts */
private String streamAlerts;
/*
* (non-Javadoc)
*
* @see com.sitewhere.spi.server.lifecycle.ILifecycleComponent#start()
*/
@Override
public void start() throws SiteWhereException {
// Required for filters.
super.start();
try {
URI rootUri = SiteWhere.getServer().getConfigurationResolver().getConfigurationRoot();
File rootFolder = new File(rootUri.getPath());
if (!rootFolder.exists()) {
throw new SiteWhereException("Configuration root does not exist.");
}
File security = new File(rootFolder, "security");
if (!security.exists()) {
throw new SiteWhereException("Security folder does not exist: " + security.getAbsolutePath());
}
File jks = new File(security, "client-truststore.jks");
if (!jks.exists()) {
throw new SiteWhereException("Trust store not found: " + jks.getAbsolutePath());
}
System.setProperty("javax.net.ssl.trustStore", jks.getAbsolutePath());
System.setProperty("javax.net.ssl.trustStorePassword", "wso2carbon");
String url = getSiddhiProtocol() + "://" + getSiddhiHost() + ":" + getSiddhiPort();
LOGGER.info("Connecting to WSO2 CEP instance at: " + url);
this.publisher = new DataPublisher(url, getSiddhiUsername(), getSiddhiPassword());
} catch (MalformedURLException e) {
throw new SiteWhereException("Invalid URL for external Siddhi server.", e);
} catch (AgentException e) {
throw new SiteWhereException("Agent problem for external Siddhi server.", e);
} catch (AuthenticationException e) {
throw new SiteWhereException("Authentication problem for external Siddhi server.", e);
} catch (TransportException e) {
throw new SiteWhereException("Transport problem for external Siddhi server.", e);
}
createStreams();
}
/*
* (non-Javadoc)
*
* @see com.sitewhere.device.event.processor.FilteredOutboundEventProcessor#stop()
*/
@Override
public void stop() throws SiteWhereException {
// Stop filters.
super.stop();
// Shut the publisher down.
if (publisher != null) {
publisher.stopNow();
}
}
/**
* Create the streams for standard SiteWhere event types.
*
* @throws SiteWhereException
*/
protected void createStreams() throws SiteWhereException {
try {
this.streamMeasurements = getPublisher().defineStream(createMeasurementsStreamDefinition());
} catch (Throwable e) {
LOGGER.info("Unable to create Siddhi measurements stream.", e);
}
try {
this.streamLocations = getPublisher().defineStream(createLocationsStreamDefinition());
} catch (Throwable e) {
LOGGER.info("Unable to create Siddhi locations stream.", e);
}
try {
this.streamAlerts = getPublisher().defineStream(createAlertsStreamDefinition());
} catch (Throwable e) {
LOGGER.info("Unable to create Siddhi alerts stream.", e);
}
}
/*
* (non-Javadoc)
*
* @see com.sitewhere.device.event.processor.FilteredOutboundEventProcessor#
* onMeasurementsNotFiltered(com.sitewhere.spi.device.event.IDeviceMeasurements)
*/
@Override
public void onMeasurementsNotFiltered(IDeviceMeasurements measurements) throws SiteWhereException {
Map mxs = measurements.getMeasurements();
for (String key : mxs.keySet()) {
Event event =
new Event(streamMeasurements, System.currentTimeMillis(), null, null, new Object[] {
measurements.getId(),
measurements.getSiteToken(),
measurements.getDeviceAssignmentToken(),
measurements.getAssetModuleId(),
measurements.getAssetId(),
measurements.getEventDate().getTime(),
key,
mxs.get(key) });
try {
getPublisher().publish(event);
} catch (AgentException e) {
throw new SiteWhereException("Unable to publish measurement event.", e);
}
}
}
/*
* (non-Javadoc)
*
* @see com.sitewhere.device.event.processor.FilteredOutboundEventProcessor#
* onLocationNotFiltered(com.sitewhere.spi.device.event.IDeviceLocation)
*/
@Override
public void onLocationNotFiltered(IDeviceLocation location) throws SiteWhereException {
Event event =
new Event(streamLocations, System.currentTimeMillis(), null, null, new Object[] {
location.getId(),
location.getSiteToken(),
location.getDeviceAssignmentToken(),
location.getAssetModuleId(),
location.getAssetId(),
location.getEventDate().getTime(),
location.getLatitude(),
location.getLongitude(),
location.getElevation() });
try {
getPublisher().publish(event);
} catch (AgentException e) {
throw new SiteWhereException("Unable to publish location event.", e);
}
}
/*
* (non-Javadoc)
*
* @see
* com.sitewhere.device.event.processor.FilteredOutboundEventProcessor#onAlertNotFiltered
* (com.sitewhere.spi.device.event.IDeviceAlert)
*/
@Override
public void onAlertNotFiltered(IDeviceAlert alert) throws SiteWhereException {
Event event =
new Event(streamAlerts, System.currentTimeMillis(), null, null, new Object[] {
alert.getId(),
alert.getSiteToken(),
alert.getDeviceAssignmentToken(),
alert.getAssetModuleId(),
alert.getAssetId(),
alert.getEventDate().getTime(),
alert.getSource(),
alert.getLevel(),
alert.getType(),
alert.getMessage() });
try {
getPublisher().publish(event);
} catch (AgentException e) {
throw new SiteWhereException("Unable to publish alert event.", e);
}
}
/**
* Create stream definition for SiteWhere measurements.
*
* @return
* @throws MalformedStreamDefinitionException
*/
protected StreamDefinition createMeasurementsStreamDefinition() throws MalformedStreamDefinitionException {
StreamDefinition definition =
new StreamDefinition(MEAUREMENTS_STREAM_ID,
SiteWhere.getServer().getVersion().getVersionIdentifier());
definition.setNickName("SiteWhere Measurements");
definition.setDescription("SiteWhere Measurements");
List attributes = new ArrayList();
attributes.add(new Attribute("id", AttributeType.STRING));
attributes.add(new Attribute("site", AttributeType.STRING));
attributes.add(new Attribute("assignment", AttributeType.STRING));
attributes.add(new Attribute("assetmodule", AttributeType.STRING));
attributes.add(new Attribute("asset", AttributeType.STRING));
attributes.add(new Attribute("eventdate", AttributeType.LONG));
attributes.add(new Attribute("mxname", AttributeType.STRING));
attributes.add(new Attribute("mxvalue", AttributeType.DOUBLE));
definition.setPayloadData(attributes);
return definition;
}
/**
* Create stream definition for SiteWhere locations.
*
* @return
* @throws MalformedStreamDefinitionException
*/
protected StreamDefinition createLocationsStreamDefinition() throws MalformedStreamDefinitionException {
StreamDefinition definition =
new StreamDefinition(LOCATIONS_STREAM_ID,
SiteWhere.getServer().getVersion().getVersionIdentifier());
definition.setNickName("SiteWhere Locations");
definition.setDescription("SiteWhere Locations");
List attributes = new ArrayList();
attributes.add(new Attribute("id", AttributeType.STRING));
attributes.add(new Attribute("site", AttributeType.STRING));
attributes.add(new Attribute("assignment", AttributeType.STRING));
attributes.add(new Attribute("assetmodule", AttributeType.STRING));
attributes.add(new Attribute("asset", AttributeType.STRING));
attributes.add(new Attribute("eventdate", AttributeType.LONG));
attributes.add(new Attribute("latitude", AttributeType.DOUBLE));
attributes.add(new Attribute("longitude", AttributeType.DOUBLE));
attributes.add(new Attribute("elevation", AttributeType.DOUBLE));
definition.setPayloadData(attributes);
return definition;
}
/**
* Create stream definition for SiteWhere locations.
*
* @return
* @throws MalformedStreamDefinitionException
*/
protected StreamDefinition createAlertsStreamDefinition() throws MalformedStreamDefinitionException {
StreamDefinition definition =
new StreamDefinition(ALERTS_STREAM_ID,
SiteWhere.getServer().getVersion().getVersionIdentifier());
definition.setNickName("SiteWhere Alerts");
definition.setDescription("SiteWhere Alerts");
List attributes = new ArrayList();
attributes.add(new Attribute("id", AttributeType.STRING));
attributes.add(new Attribute("site", AttributeType.STRING));
attributes.add(new Attribute("assignment", AttributeType.STRING));
attributes.add(new Attribute("assetmodule", AttributeType.STRING));
attributes.add(new Attribute("asset", AttributeType.STRING));
attributes.add(new Attribute("eventdate", AttributeType.LONG));
attributes.add(new Attribute("source", AttributeType.STRING));
attributes.add(new Attribute("level", AttributeType.STRING));
attributes.add(new Attribute("type", AttributeType.STRING));
attributes.add(new Attribute("message", AttributeType.STRING));
definition.setPayloadData(attributes);
return definition;
}
/*
* (non-Javadoc)
*
* @see com.sitewhere.spi.server.lifecycle.ILifecycleComponent#getLogger()
*/
@Override
public Logger getLogger() {
return LOGGER;
}
public String getSiddhiProtocol() {
return siddhiProtocol;
}
public void setSiddhiProtocol(String siddhiProtocol) {
this.siddhiProtocol = siddhiProtocol;
}
public String getSiddhiHost() {
return siddhiHost;
}
public void setSiddhiHost(String siddhiHost) {
this.siddhiHost = siddhiHost;
}
public int getSiddhiPort() {
return siddhiPort;
}
public void setSiddhiPort(int siddhiPort) {
this.siddhiPort = siddhiPort;
}
public String getSiddhiUsername() {
return siddhiUsername;
}
public void setSiddhiUsername(String siddhiUsername) {
this.siddhiUsername = siddhiUsername;
}
public String getSiddhiPassword() {
return siddhiPassword;
}
public void setSiddhiPassword(String siddhiPassword) {
this.siddhiPassword = siddhiPassword;
}
public DataPublisher getPublisher() {
return publisher;
}
public void setPublisher(DataPublisher publisher) {
this.publisher = publisher;
}
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