diff options
Diffstat (limited to 'dcae-analytics-tca/src/main/java/org/onap/dcae/apod/analytics/tca/processor/TCACEFJsonProcessor.java')
-rw-r--r-- | dcae-analytics-tca/src/main/java/org/onap/dcae/apod/analytics/tca/processor/TCACEFJsonProcessor.java | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/dcae-analytics-tca/src/main/java/org/onap/dcae/apod/analytics/tca/processor/TCACEFJsonProcessor.java b/dcae-analytics-tca/src/main/java/org/onap/dcae/apod/analytics/tca/processor/TCACEFJsonProcessor.java new file mode 100644 index 0000000..fdeeb3d --- /dev/null +++ b/dcae-analytics-tca/src/main/java/org/onap/dcae/apod/analytics/tca/processor/TCACEFJsonProcessor.java @@ -0,0 +1,98 @@ +/* + * ===============================LICENSE_START====================================== + * dcae-analytics + * ================================================================================ + * Copyright © 2017 AT&T Intellectual Property. 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. + * ============================LICENSE_END=========================================== + */ + +package org.onap.dcae.apod.analytics.tca.processor; + +import org.apache.commons.lang3.StringUtils; +import org.onap.dcae.apod.analytics.common.exception.MessageProcessingException; +import org.onap.dcae.apod.analytics.common.service.processor.AbstractMessageProcessor; +import org.onap.dcae.apod.analytics.model.domain.cef.EventListener; +import org.onap.dcae.apod.analytics.tca.utils.TCAUtils; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; + +/** + *<p> + * Processor that converts incoming presumed JSON string CEF message to {@link EventListener} object + * <br> + * Pre Conditions: None + *</p> + * + * @author Rajiv Singla . Creation Date: 11/5/2016. + */ +public class TCACEFJsonProcessor extends AbstractMessageProcessor<TCACEFProcessorContext> { + + + private static final long serialVersionUID = 1L; + + private static final Logger LOG = LoggerFactory.getLogger(TCACEFJsonProcessor.class); + + + @Override + public String getProcessorDescription() { + return "Converts incoming TCA CEF Message to Event Listener object"; + } + + @Override + public TCACEFProcessorContext processMessage(TCACEFProcessorContext processorContext) { + + final String cefMessage = processorContext.getMessage(); + + // If CEF Message is null then processor should stop processing + if (cefMessage == null) { + String errorMessage = "Null CEF message cannot be converted to CEF Event Listener Object"; + throw new MessageProcessingException(errorMessage, LOG, new IllegalArgumentException(errorMessage)); + } + + // If CEF Message is blank then processor stop processing + if (StringUtils.isBlank(cefMessage)) { + setTerminatingProcessingMessage("Blank CEF message cannot be converted to CEF Event Listener Object", + processorContext); + return processorContext; + } + + // trim cef message + final String trimmedCEFMessage = cefMessage.trim(); + + // if message does not start with curly brace and ends with curly brace, it is not a valid cef message + // processor will stop processing + if (!(trimmedCEFMessage.startsWith("{") && trimmedCEFMessage.endsWith("}"))) { + setTerminatingProcessingMessage("CEF Message must start with curly brace and must end with curly brace", + processorContext); + return processorContext; + } + + // try parsing the cef message + try { + final EventListener eventListener = TCAUtils.readValue(trimmedCEFMessage, EventListener.class); + setFinishedProcessingMessage("CEF JSON to Event Listener Conversion Successful", processorContext); + // set new Event Listener in the Processor Context + processorContext.setCEFEventListener(eventListener); + return processorContext; + } catch (IOException e) { + final String errorMessage = String.format("Parsing Failed for CEF Message: %s, Error: %s", cefMessage, e); + // If parsing fails throw an exception + throw new MessageProcessingException(errorMessage, LOG, e); + } + + } +} |