/*
* Copyright (c) 2005 - 2014, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* 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.wso2.carbon.event.publisher.core.internal.type.text;
import org.wso2.carbon.databridge.commons.Attribute;
import org.wso2.carbon.databridge.commons.StreamDefinition;
import org.wso2.carbon.event.publisher.core.config.EventPublisherConfiguration;
import org.wso2.carbon.event.publisher.core.config.EventPublisherConstants;
import org.wso2.carbon.event.publisher.core.config.mapping.TextOutputMapping;
import org.wso2.carbon.event.publisher.core.exception.EventPublisherConfigurationException;
import org.wso2.carbon.event.publisher.core.internal.OutputMapper;
import org.wso2.carbon.event.publisher.core.internal.util.EventPublisherUtil;
import org.wso2.carbon.event.publisher.core.internal.util.RuntimeResourceLoader;
import org.wso2.siddhi.core.event.Event;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class TextOutputMapper implements OutputMapper {
private List<String> mappingTextList;
private EventPublisherConfiguration eventPublisherConfiguration = null;
private Map<String, Integer> propertyPositionMap = null;
private final StreamDefinition streamDefinition;
private boolean isCustomRegistryPath;
private final RuntimeResourceLoader runtimeResourceLoader;
private final boolean isCustomMappingEnabled;
private String mappingText;
public TextOutputMapper(EventPublisherConfiguration eventPublisherConfiguration,
Map<String, Integer> propertyPositionMap, int tenantId,
StreamDefinition streamDefinition) throws
EventPublisherConfigurationException {
this.eventPublisherConfiguration = eventPublisherConfiguration;
this.propertyPositionMap = propertyPositionMap;
this.streamDefinition = streamDefinition;
TextOutputMapping outputMapping = ((TextOutputMapping) eventPublisherConfiguration.getOutputMapping());
this.runtimeResourceLoader = new RuntimeResourceLoader(outputMapping.getCacheTimeoutDuration(), propertyPositionMap);
this.isCustomMappingEnabled = outputMapping.isCustomMappingEnabled();
if (this.isCustomMappingEnabled) {
mappingText = outputMapping.getMappingText();
if (outputMapping.isRegistryResource()) {
this.isCustomRegistryPath = mappingText.contains(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_PREFIX) && mappingText.indexOf(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_POSTFIX) > 0;
if (!this.isCustomRegistryPath) {
mappingText = this.runtimeResourceLoader.getResourceContent(outputMapping.getMappingText());
}
}
} else {
mappingText = generateTemplateTextEvent(streamDefinition);
}
if (!outputMapping.isRegistryResource()) { // Store only if it is not from registry
this.mappingTextList = generateMappingTextList(mappingText);
}
}
private List<String> getOutputMappingPropertyList(String mappingText) {
List<String> mappingTextList = new ArrayList<String>();
String text = mappingText;
mappingTextList.clear();
while (text.contains(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_PREFIX) && text.indexOf(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_POSTFIX) > 0) {
mappingTextList.add(text.substring(text.indexOf(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_PREFIX) + 2, text.indexOf(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_POSTFIX)));
text = text.substring(text.indexOf(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_POSTFIX) + 2);
}
return mappingTextList;
}
private List<String> generateMappingTextList(String mappingText) {
List<String> mappingTextList = new ArrayList<String>();
String text = mappingText;
mappingTextList.clear();
while (text.contains(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_PREFIX) && text.indexOf(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_POSTFIX) > 0) {
mappingTextList.add(text.substring(0, text.indexOf(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_PREFIX)));
mappingTextList.add(text.substring(text.indexOf(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_PREFIX) + 2, text.indexOf(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_POSTFIX)));
text = text.substring(text.indexOf(EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_POSTFIX) + 2);
}
mappingTextList.add(text);
return mappingTextList;
}
@Override
public Object convertToMappedInputEvent(Event event)
throws EventPublisherConfigurationException {
if (this.isCustomMappingEnabled) {
EventPublisherUtil.validateStreamDefinitionWithOutputProperties(mappingText, propertyPositionMap, event.getArbitraryDataMap());
}
// Retrieve resource at runtime if it is from registry
TextOutputMapping outputMapping = (TextOutputMapping) eventPublisherConfiguration.getOutputMapping();
if (outputMapping.isRegistryResource()) {
String path = outputMapping.getMappingText();
if (isCustomRegistryPath) {
// Retrieve the actual path
List<String> pathMappingTextList = generateMappingTextList(path);
StringBuilder pathBuilder = new StringBuilder(pathMappingTextList.get(0));
for (int i = 1; i < pathMappingTextList.size(); i++) {
if (i % 2 == 0) {
pathBuilder.append(pathMappingTextList.get(i));
} else {
pathBuilder.append(getPropertyValue(event, pathMappingTextList.get(i)));
}
}
path = pathBuilder.toString();
}
// Retrieve actual content
String actualMappingText = this.runtimeResourceLoader.getResourceContent(path);
this.mappingTextList = generateMappingTextList(actualMappingText);
}
StringBuilder eventText = new StringBuilder(mappingTextList.get(0));
for (int i = 1; i < mappingTextList.size(); i++) {
if (i % 2 == 0) {
eventText.append(mappingTextList.get(i));
} else {
eventText.append(getPropertyValue(event, mappingTextList.get(i)));
}
}
if (!this.isCustomMappingEnabled) {
Map<String, Object> arbitraryDataMap = event.getArbitraryDataMap();
if (arbitraryDataMap != null && !arbitraryDataMap.isEmpty()) {
// Add arbitrary data map to the default template
eventText.append(EventPublisherConstants.EVENT_ATTRIBUTE_SEPARATOR);
for (Map.Entry<String, Object> entry : arbitraryDataMap.entrySet()) {
eventText.append("\n" + entry.getKey() + EventPublisherConstants.EVENT_ATTRIBUTE_VALUE_SEPARATOR + entry.getValue() + EventPublisherConstants.EVENT_ATTRIBUTE_SEPARATOR);
}
eventText.deleteCharAt(eventText.lastIndexOf(EventPublisherConstants.EVENT_ATTRIBUTE_SEPARATOR));
}
}
return eventText.toString();
}
@Override
public Object convertToTypedInputEvent(Event event)
throws EventPublisherConfigurationException {
return convertToMappedInputEvent(event);
}
private String getPropertyValue(Event event, String mappingProperty) {
Object[] eventData = event.getData();
Map<String, Object> arbitraryMap = event.getArbitraryDataMap();
Integer position = propertyPositionMap.get(mappingProperty);
Object data = null;
if (position != null && eventData.length != 0) {
data = eventData[position];
} else if (mappingProperty != null && arbitraryMap != null && arbitraryMap.containsKey(mappingProperty)) {
data = arbitraryMap.get(mappingProperty);
}
if (data != null) {
return data.toString();
}
return "";
}
private String generateTemplateTextEvent(StreamDefinition streamDefinition) {
String templateTextEvent = "";
List<Attribute> metaDatAttributes = streamDefinition.getMetaData();
if (metaDatAttributes != null && metaDatAttributes.size() > 0) {
for (Attribute attribute : metaDatAttributes) {
templateTextEvent += "\n" + EventPublisherConstants.PROPERTY_META_PREFIX + attribute.getName() + EventPublisherConstants.EVENT_ATTRIBUTE_VALUE_SEPARATOR + EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_PREFIX + EventPublisherConstants.PROPERTY_META_PREFIX + attribute.getName() + EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_POSTFIX + EventPublisherConstants.EVENT_ATTRIBUTE_SEPARATOR;
}
}
List<Attribute> correlationAttributes = streamDefinition.getCorrelationData();
if (correlationAttributes != null && correlationAttributes.size() > 0) {
for (Attribute attribute : correlationAttributes) {
templateTextEvent += "\n" + EventPublisherConstants.PROPERTY_CORRELATION_PREFIX + attribute.getName() + EventPublisherConstants.EVENT_ATTRIBUTE_VALUE_SEPARATOR + EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_PREFIX + EventPublisherConstants.PROPERTY_CORRELATION_PREFIX + attribute.getName() + EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_POSTFIX + EventPublisherConstants.EVENT_ATTRIBUTE_SEPARATOR;
}
}
List<Attribute> payloadAttributes = streamDefinition.getPayloadData();
if (payloadAttributes != null && payloadAttributes.size() > 0) {
for (Attribute attribute : payloadAttributes) {
templateTextEvent += "\n" + attribute.getName() + EventPublisherConstants.EVENT_ATTRIBUTE_VALUE_SEPARATOR + EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_PREFIX + attribute.getName() + EventPublisherConstants.TEMPLATE_EVENT_ATTRIBUTE_POSTFIX + EventPublisherConstants.EVENT_ATTRIBUTE_SEPARATOR;
}
}
if (templateTextEvent.trim().endsWith(EventPublisherConstants.EVENT_ATTRIBUTE_SEPARATOR)) {
templateTextEvent = templateTextEvent.substring(0, templateTextEvent.length() - 1).trim();
}
return templateTextEvent;
}
}