MessageDiscardWorker.java
/**
* Copyright (c) 2023, WSO2 LLC. (http://www.wso2.org)
*
* 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 org.apache.synapse.transport.passthru;
import org.apache.axis2.AxisFault;
import org.apache.axis2.context.MessageContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.nio.NHttpClientConnection;
import org.apache.http.nio.NHttpServerConnection;
import org.apache.synapse.commons.CorrelationConstants;
import org.apache.synapse.transport.passthru.config.PassThroughConfiguration;
import org.apache.synapse.transport.passthru.config.TargetConfiguration;
import org.apache.synapse.transport.passthru.util.PassThroughTransportUtils;
import org.apache.synapse.transport.passthru.util.RelayUtils;
public class MessageDiscardWorker implements Runnable {
private Log log = LogFactory.getLog(MessageDiscardWorker.class);
TargetConfiguration targetConfiguration = null;
private TargetResponse response = null;
private MessageContext requestMessageContext;
NHttpClientConnection conn = null;
private Long queuedTime = null;
private PassThroughConfiguration conf = PassThroughConfiguration.getInstance();
private WorkerState state;
public MessageDiscardWorker(MessageContext requestMsgContext, TargetResponse response,
TargetConfiguration targetConfiguration, NHttpClientConnection conn) {
this.state = WorkerState.CREATED;
this.response = response;
this.requestMessageContext = requestMsgContext;
this.targetConfiguration = targetConfiguration;
this.conn = conn;
this.queuedTime = System.currentTimeMillis();
}
public void run() {
// Mark the start of the request message discard worker at the beginning of the worker thread
setWorkerState(WorkerState.RUNNING);
Long expectedMaxQueueingTime = conf.getExpectedMaxQueueingTimeForMessageDiscardWorker();
if (queuedTime != null && expectedMaxQueueingTime != null) {
Long messageDiscardWorkerQueuedTime = System.currentTimeMillis() - queuedTime;
if (messageDiscardWorkerQueuedTime >= expectedMaxQueueingTime) {
log.warn("Message discard worker queued time exceeds the expected max queueing time. Expected "
+ "max queueing time : " + expectedMaxQueueingTime + "ms. Actual queued time : "
+ messageDiscardWorkerQueuedTime + "ms"+ ", CORRELATION_ID : "
+ requestMessageContext.getProperty(CorrelationConstants.CORRELATION_ID));
}
}
// If an error has happened in the request processing, consumes the data in pipe completely and discard it
try {
RelayUtils.discardRequestMessage(requestMessageContext);
} catch (AxisFault af) {
log.error("Fault discarding request message", af);
}
// Mark the end of the request message discard worker at the end of the worker thread
setWorkerState(WorkerState.FINISHED);
ClientWorker clientWorker = new ClientWorker(targetConfiguration, requestMessageContext, response);
conn.getContext().setAttribute(PassThroughConstants.CLIENT_WORKER_REFERENCE
, clientWorker);
targetConfiguration.getWorkerPool().execute(clientWorker);
targetConfiguration.getMetrics().incrementMessagesReceived();
NHttpServerConnection sourceConn = (NHttpServerConnection) requestMessageContext.getProperty(
PassThroughConstants.PASS_THROUGH_SOURCE_CONNECTION);
if (sourceConn != null) {
PassThroughTransportUtils.setSourceConnectionContextAttributes(sourceConn, conn);
}
}
private void setWorkerState(WorkerState workerState) {
this.state = workerState;
}
public WorkerState getWorkerState() {
return this.state;
}
}