/*
* Copyright 2014 NAVER Corp.
* 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 com.navercorp.pinpoint.plugin.arcus.interceptor;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.concurrent.Future;
import net.spy.memcached.MemcachedNode;
import net.spy.memcached.ops.Operation;
import com.navercorp.pinpoint.bootstrap.async.AsyncTraceIdAccessor;
import com.navercorp.pinpoint.bootstrap.context.AsyncTraceId;
import com.navercorp.pinpoint.bootstrap.context.MethodDescriptor;
import com.navercorp.pinpoint.bootstrap.context.SpanEventRecorder;
import com.navercorp.pinpoint.bootstrap.context.Trace;
import com.navercorp.pinpoint.bootstrap.context.TraceContext;
import com.navercorp.pinpoint.bootstrap.interceptor.AroundInterceptor;
import com.navercorp.pinpoint.bootstrap.interceptor.annotation.Scope;
import com.navercorp.pinpoint.bootstrap.logging.PLogger;
import com.navercorp.pinpoint.bootstrap.logging.PLoggerFactory;
import com.navercorp.pinpoint.plugin.arcus.ArcusConstants;
import com.navercorp.pinpoint.plugin.arcus.OperationAccessor;
import com.navercorp.pinpoint.plugin.arcus.ServiceCodeAccessor;
/**
* @author emeroad
* @author jaehong.kim
*/
@Scope(ArcusConstants.ARCUS_SCOPE)
public class ApiInterceptor implements AroundInterceptor {
protected final PLogger logger = PLoggerFactory.getLogger(getClass());
protected final boolean isDebug = logger.isDebugEnabled();
protected final MethodDescriptor methodDescriptor;
protected final TraceContext traceContext;
private final boolean traceKey;
private final int keyIndex;
public ApiInterceptor(TraceContext context, MethodDescriptor targetMethod, boolean traceKey) {
this.traceContext = context;
this.methodDescriptor = targetMethod;
if (traceKey) {
int index = findFirstString(targetMethod);
if (index != -1) {
this.traceKey = true;
this.keyIndex = index;
} else {
this.traceKey = false;
this.keyIndex = -1;
}
} else {
this.traceKey = false;
this.keyIndex = -1;
}
}
private static int findFirstString(MethodDescriptor method) {
if (method == null) {
return -1;
}
final String[] methodParams = method.getParameterTypes();
final int minIndex = Math.min(methodParams.length, 3);
for (int i = 0; i < minIndex; i++) {
if ("java.lang.String".equals(methodParams[i])) {
return i;
}
}
return -1;
}
@Override
public void before(Object target, Object[] args) {
if (isDebug) {
logger.beforeInterceptor(target, args);
}
final Trace trace = traceContext.currentTraceObject();
if (trace == null) {
return;
}
try {
trace.traceBlockBegin();
} catch (Throwable th) {
if (logger.isWarnEnabled()) {
logger.warn("BEFORE. Caused:{}", th.getMessage(), th);
}
}
}
@Override
public void after(Object target, Object[] args, Object result, Throwable throwable) {
if (isDebug) {
logger.afterInterceptor(target, args, result, throwable);
}
final Trace trace = traceContext.currentTraceObject();
if (trace == null) {
return;
}
try {
final SpanEventRecorder recorder = trace.currentSpanEventRecorder();
if (traceKey) {
final Object recordObject = args[keyIndex];
recorder.recordApi(methodDescriptor, recordObject, keyIndex);
} else {
recorder.recordApi(methodDescriptor);
}
recorder.recordException(throwable);
// find the target node
if (result instanceof Future && result instanceof OperationAccessor) {
final Operation op = ((OperationAccessor)result)._$PINPOINT$_getOperation();
if (op != null) {
final MemcachedNode handlingNode = op.getHandlingNode();
if (handlingNode != null) {
final String endPoint = getEndPoint(handlingNode);
if (endPoint != null) {
recorder.recordEndPoint(endPoint);
}
}
} else {
logger.info("operation not found");
}
}
if (target instanceof ServiceCodeAccessor) {
// determine the service type
String serviceCode = ((ServiceCodeAccessor)target)._$PINPOINT$_getServiceCode();
if (serviceCode != null) {
recorder.recordDestinationId(serviceCode);
recorder.recordServiceType(ArcusConstants.ARCUS);
} else {
recorder.recordDestinationId("MEMCACHED");
recorder.recordServiceType(ArcusConstants.MEMCACHED);
}
} else {
recorder.recordDestinationId("MEMCACHED");
recorder.recordServiceType(ArcusConstants.MEMCACHED);
}
try {
if (isAsynchronousInvocation(target, args, result, throwable)) {
// set asynchronous trace
final AsyncTraceId asyncTraceId = trace.getAsyncTraceId();
recorder.recordNextAsyncId(asyncTraceId.getAsyncId());
// type check isAsynchronousInvocation
((AsyncTraceIdAccessor)result)._$PINPOINT$_setAsyncTraceId(asyncTraceId);
if (isDebug) {
logger.debug("Set asyncTraceId metadata {}", asyncTraceId);
}
}
} catch (Throwable t) {
logger.warn("Failed to BEFORE process. {}", t.getMessage(), t);
}
} catch (Throwable th) {
if (logger.isWarnEnabled()) {
logger.warn("AFTER error. Caused:{}", th.getMessage(), th);
}
} finally {
trace.traceBlockEnd();
}
}
private String getEndPoint(MemcachedNode handlingNode) {
// TODO duplicated code : ApiInterceptor, FutureGetInterceptor
final SocketAddress socketAddress = handlingNode.getSocketAddress();
if (socketAddress instanceof InetSocketAddress) {
final InetSocketAddress inetSocketAddress = (InetSocketAddress) socketAddress;
final String hostAddress = getHostAddress(inetSocketAddress);
if (hostAddress == null) {
// TODO return "Unknown Host"; ?
logger.debug("hostAddress is null");
return null;
}
return hostAddress + ":" + inetSocketAddress.getPort();
} else {
if (logger.isDebugEnabled()) {
logger.debug("invalid socketAddress:{}", socketAddress);
}
return null;
}
}
private String getHostAddress(InetSocketAddress inetSocketAddress) {
if (inetSocketAddress == null) {
return null;
}
// TODO JDK 1.7 InetSocketAddress.getHostString();
// Warning : Avoid unnecessary DNS lookup (warning:InetSocketAddress.getHostName())
final InetAddress inetAddress = inetSocketAddress.getAddress();
if (inetAddress == null) {
return null;
}
return inetAddress.getHostAddress();
}
private boolean isAsynchronousInvocation(final Object target, final Object[] args, Object result, Throwable throwable) {
if (throwable != null || result == null) {
return false;
}
if (!(result instanceof AsyncTraceIdAccessor)) {
logger.debug("Invalid result object. Need accessor({}).", AsyncTraceIdAccessor.class.getName());
return false;
}
return true;
}
}