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/*-
* ============LICENSE_START=======================================================
* MODEL LOADER SERVICE
* ================================================================================
* Copyright (C) 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.openecomp.modelloader.service;
import org.openecomp.sdc.api.IDistributionClient;
import org.openecomp.sdc.api.results.IDistributionClientResult;
import org.openecomp.sdc.impl.DistributionClientFactory;
import org.openecomp.sdc.utils.DistributionActionResultEnum;
import org.openecomp.cl.api.Logger;
import org.openecomp.cl.eelf.LoggerFactory;
import org.openecomp.modelloader.config.ModelLoaderConfig;
import org.openecomp.modelloader.entity.model.ModelArtifactHandler;
import org.openecomp.modelloader.notification.EventCallback;
import java.io.IOException;
import java.util.Properties;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.core.Response;
/**
* Service class in charge of managing the negotiating model loading
* capabilities between AAI and an ASDC.
*/
public class ModelLoaderService implements ModelLoaderInterface {
protected static String CONFIG_FILE = "model-loader.properties";
private IDistributionClient client;
private ModelLoaderConfig config;
static Logger logger = LoggerFactory.getInstance().getLogger(ModelLoaderService.class.getName());
/**
* Responsible for loading configuration files and calling initialization.
*/
@PostConstruct
protected void start() {
// Load model loader system configuration
logger.info(ModelLoaderMsgs.LOADING_CONFIGURATION);
Properties configProperties = new Properties();
try {
configProperties.load(this.getClass().getClassLoader().getResourceAsStream(CONFIG_FILE));
} catch (IOException e) {
String errorMsg = "Failed to load configuration: " + e.getMessage();
logger.error(ModelLoaderMsgs.ASDC_CONNECTION_ERROR, errorMsg);
shutdown();
}
config = new ModelLoaderConfig(configProperties);
init();
}
/**
* Responsible for stopping the connection to the distribution client before
* the resource is destroyed.
*/
@PreDestroy
protected void preShutdownOperations() {
logger.info(ModelLoaderMsgs.STOPPING_CLIENT);
if (client != null) {
client.stop();
}
}
/**
* Responsible for loading configuration files, initializing model
* distribution clients, and starting them.
*/
protected void init() {
// Initialize distribution client
logger.debug(ModelLoaderMsgs.INITIALIZING, "Initializing distribution client...");
client = DistributionClientFactory.createDistributionClient();
IDistributionClientResult initResult = client.init(config, new EventCallback(client, config));
if (initResult.getDistributionActionResult() != DistributionActionResultEnum.SUCCESS) {
String errorMsg = "Failed to initialize distribution client: "
+ initResult.getDistributionMessageResult();
logger.error(ModelLoaderMsgs.ASDC_CONNECTION_ERROR, errorMsg);
shutdown();
}
// Start distribution client
logger.debug(ModelLoaderMsgs.INITIALIZING, "Starting distribution client...");
IDistributionClientResult startResult = client.start();
if (startResult.getDistributionActionResult() != DistributionActionResultEnum.SUCCESS) {
String errorMsg = "Failed to start distribution client: "
+ startResult.getDistributionMessageResult();
logger.error(ModelLoaderMsgs.ASDC_CONNECTION_ERROR, errorMsg);
shutdown();
}
logger.debug(ModelLoaderMsgs.INITIALIZING,
"Succcessfully loaded service: " + this.getClass().getSimpleName());
}
/**
* Shut down the process.
*/
private void shutdown() {
preShutdownOperations();
// TODO: Find a better way to shut down the model loader.
try {
// Give logs time to write to file
Thread.sleep(2000);
} catch (InterruptedException e) {
// Nothing we can do at this point
}
Runtime.getRuntime().halt(1);
}
/** (non-Javadoc)
* @see org.openecomp.modelloader.service.ModelLoaderInterface#loadModel(java.lang.String)
*/
@Override
public Response loadModel(String modelid) {
Response response = Response.ok("{\"model_loaded\":\"" + modelid + "\"}").build();
return response;
}
/** (non-Javadoc)
* @see org.openecomp.modelloader.service.ModelLoaderInterface#saveModel(java.lang.String, java.lang.String)
*/
@Override
public Response saveModel(String modelid, String modelname) {
Response response = Response.ok("{\"model_saved\":\"" + modelid + "-" + modelname + "\"}")
.build();
return response;
}
@Override
public Response ingestModel(String modelid, HttpServletRequest req, String payload)
throws IOException {
Response response;
if (config.getIngestSimulatorEnabled()) {
logger.info(ModelLoaderMsgs.DISTRIBUTION_EVENT, "Received test artifact");
ModelArtifactHandler handler = new ModelArtifactHandler(config);
handler.loadModelTest(payload.getBytes());
response = Response.ok().build();
} else {
logger.debug("Simulation interface disabled");
response = Response.serverError().build();
}
return response;
}
}
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