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/*-
* ============LICENSE_START=======================================================
* openECOMP : SDN-C
* ================================================================================
* 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.onap.ccsdk.sli.plugins.fabricdiscovery;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
import org.onap.ccsdk.sli.core.sli.SvcLogicException;
import org.onap.ccsdk.sli.core.sli.SvcLogicJavaPlugin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class FabricDiscoveryPlugin implements SvcLogicJavaPlugin, IFabricDiscoveryService {
private ExecutorService service;
private Map<String, WebSocketClient> streamMap;
private static final Logger LOG = LoggerFactory.getLogger(FabricDiscoveryPlugin.class);
private static final String STREAM_PREFIX = "ws://";
private static final String FB_DISCOVERY_STATUS = "fb-response";
public FabricDiscoveryPlugin() {
service = Executors.newFixedThreadPool(10);
streamMap = new ConcurrentHashMap<>();
}
@Override
public void processDcNotificationStream (Map<String, String> paramMap, SvcLogicContext ctx) throws SvcLogicException {
boolean enable;
String stream = parseParam(paramMap, "stream", true, null);
String prefix = parseParam(paramMap, "contextPrefix", false, null);
String enableStr = parseParam(paramMap, "enable", true, null);
// Validate the input parameters
String pfx = (prefix != null) ? prefix + '.' : "";
if ("true".equalsIgnoreCase(enableStr)) {
enable = true;
} else if ("false".equalsIgnoreCase(enableStr)) {
enable = false;
} else {
ctx.setAttribute(pfx + FB_DISCOVERY_STATUS, "Failure");
throw new SvcLogicException("Incorrect parameter: enable. Valid values are ['true', 'false']");
}
if (!STREAM_PREFIX.equalsIgnoreCase(stream.substring(0, 5))) {
ctx.setAttribute(pfx + FB_DISCOVERY_STATUS, "Failure");
throw new SvcLogicException("Incorrect parameter: stream, Input is not a web socket address");
}
ctx.setAttribute(pfx + FB_DISCOVERY_STATUS, "Success");
LOG.info("{} monitoring notification stream: {}", enable ? "START" : "STOP", stream);
try {
service.execute(new Runnable () {
public void run () {
try {
URI uri = new URI(stream);
if (enable) {
if (streamMap.get(stream) != null) {
LOG.info("Notification Stream: {} is already being monitoried", stream);
return;
}
IClientMessageCallback messageCallback = new ClientMessageCallback();
WebSocketClient wcClient = new WebSocketClient(uri, messageCallback);
streamMap.put(stream, wcClient);
wcClient.initialize();
try {
wcClient.connect();
} catch (InterruptedException e) {
LOG.info("Web Socket Client throws Exception: ", e.getMessage());
}
} else {
WebSocketClient wc = streamMap.get(stream);
if (wc != null) {
try {
wc.close("Closing");
} catch (InterruptedException e) {
LOG.info("Web Socket Client throws Exception: ", e.getMessage());
}
}
}
} catch (URISyntaxException e) {
LOG.info("Exception converting stream to URI with: ", e.getMessage());
}
}
});
} catch (Exception e) {
LOG.info("Web Socket client connection throws an exception: ", e.getMessage());
}
}
private String parseParam(Map<String, String> paramMap, String name, boolean required, String def)
throws SvcLogicException {
String s = paramMap.get(name);
if (s == null || s.trim().length() == 0) {
if (!required)
return def;
throw new SvcLogicException("Parameter " + name + " is required in PropertiesNode");
}
s = s.trim();
String value = "";
int i = 0;
int i1 = s.indexOf('%');
while (i1 >= 0) {
int i2 = s.indexOf('%', i1 + 1);
if (i2 < 0)
throw new SvcLogicException("Cannot parse parameter " + name + ": " + s + ": no matching %");
String varName = s.substring(i1 + 1, i2);
String varValue = System.getenv(varName);
if (varValue == null)
varValue = "";
value = (new StringBuilder()).append(value)
.append(s.substring(i, i1))
.append(varValue).toString();
i = i2 + 1;
i1 = s.indexOf('%', i);
}
value = (new StringBuilder()).append(value)
.append(s.substring(i)).toString();
LOG.info("Parameter {}: {}", name, value);
return value;
}
}
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