/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
*
* 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.apache.streams.jackson;
import org.apache.streams.pojo.json.MemoryUsageBroadcast;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonNode;
import org.slf4j.Logger;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.util.Arrays;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanInfo;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.management.openmbean.CompositeDataSupport;
public class MemoryUsageDeserializer extends JsonDeserializer<MemoryUsageBroadcast> {
private static final Logger LOGGER = org.slf4j.LoggerFactory.getLogger(MemoryUsageDeserializer.class);
public MemoryUsageDeserializer() {
}
@Override
public MemoryUsageBroadcast deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
try {
MBeanServer server = ManagementFactory.getPlatformMBeanServer();
MemoryUsageBroadcast memoryUsageBroadcast = new MemoryUsageBroadcast();
JsonNode attributes = jsonParser.getCodec().readTree(jsonParser);
ObjectName name = new ObjectName(attributes.get("canonicalName").asText());
MBeanInfo info = server.getMBeanInfo(name);
memoryUsageBroadcast.setName(name.toString());
for (MBeanAttributeInfo attribute : Arrays.asList(info.getAttributes())) {
switch (attribute.getName()) {
case "Verbose":
memoryUsageBroadcast.setVerbose((boolean) server.getAttribute(name, attribute.getName()));
break;
case "ObjectPendingFinalizationCount":
memoryUsageBroadcast.setObjectPendingFinalizationCount(Long.parseLong(server.getAttribute(name, attribute.getName()).toString()));
break;
case "HeapMemoryUsage":
memoryUsageBroadcast.setHeapMemoryUsage((Long) ((CompositeDataSupport)server.getAttribute(name, attribute.getName())).get("used"));
break;
case "NonHeapMemoryUsage":
memoryUsageBroadcast.setNonHeapMemoryUsage((Long) ((CompositeDataSupport)server.getAttribute(name, attribute.getName())).get("used"));
break;
default:
break;
}
}
return memoryUsageBroadcast;
} catch (Exception ex) {
LOGGER.error("Exception trying to deserialize MemoryUsageDeserializer object: {}", ex);
return null;
}
}
}