com.netflix.eureka.cluster.PeerEurekaNode Maven / Gradle / Ivy
/*
* Copyright 2012 Netflix, Inc.
*
* 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.netflix.eureka.cluster;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response.Status;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.netflix.appinfo.InstanceInfo;
import com.netflix.appinfo.InstanceInfo.InstanceStatus;
import com.netflix.config.ConfigurationManager;
import com.netflix.discovery.provider.Serializer;
import com.netflix.discovery.shared.EurekaJerseyClient;
import com.netflix.discovery.shared.EurekaJerseyClient.JerseyClient;
import com.netflix.eureka.CurrentRequestVersion;
import com.netflix.eureka.EurekaServerConfig;
import com.netflix.eureka.EurekaServerConfigurationManager;
import com.netflix.eureka.PeerAwareInstanceRegistry;
import com.netflix.eureka.PeerAwareInstanceRegistry.Action;
import com.netflix.eureka.Version;
import com.netflix.eureka.resources.ASGResource.ASGStatus;
import com.netflix.logging.messaging.BatcherFactory;
import com.netflix.logging.messaging.MessageBatcher;
import com.netflix.logging.messaging.MessageProcessor;
import com.netflix.servo.monitor.DynamicCounter;
import com.netflix.servo.monitor.Monitors;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.client.apache4.ApacheHttpClient4;
import com.thoughtworks.xstream.annotations.XStreamAlias;
/**
* The PeerEurekaNode represents a peer node to which information
* should be shared from this node.
*
*
* This class handles replicating all update operations like
* Register,Renew,Cancel,Expiration and Status Changes to the eureka
* node it represents.
*
*
* @author Karthik Ranganathan, Greg Kim
*
*/
public class PeerEurekaNode {
private static final Logger logger = LoggerFactory
.getLogger(PeerEurekaNode.class);
private static final int RETRY_SLEEP_TIME_MS = 100;
public static final String HEADER_REPLICATION = "x-netflix-discovery-replication";
private static final EurekaServerConfig config = EurekaServerConfigurationManager
.getInstance().getConfiguration();
private final String serviceUrl;
private final String name;
private volatile JerseyClient jerseyClient;
private volatile ApacheHttpClient4 jerseyApacheClient;
private MessageBatcher heartBeatBatcher;
private MessageBatcher statusBatcher;
private MessageBatcher registerBatcher;
private MessageBatcher cancelBatcher;
private MessageBatcher asgStatusBatcher;
public PeerEurekaNode(String serviceUrl) {
this.serviceUrl = serviceUrl.intern();
this.name = getClass().getSimpleName() + ": " + serviceUrl + "apps/: ";
this.heartBeatBatcher = getBatcher(serviceUrl, Action.Heartbeat.name());
this.statusBatcher = getBatcher(serviceUrl, Action.StatusUpdate.name());
this.asgStatusBatcher = getBatcher(serviceUrl, "ASG_" + Action.StatusUpdate.name());
this.registerBatcher = getBatcher(serviceUrl, Action.Register.name());
this.cancelBatcher = getBatcher(serviceUrl, Action.Cancel.name());
synchronized (this.serviceUrl) {
if (jerseyApacheClient == null) {
try {
String hostname;
try {
hostname = new URL(serviceUrl).getHost();
} catch (MalformedURLException e) {
hostname = serviceUrl;
}
String jerseyClientName = "Discovery-PeerNodeClient-" + hostname;
jerseyClient = EurekaJerseyClient.createJerseyClient(jerseyClientName,
config.getPeerNodeConnectTimeoutMs(),
config.getPeerNodeReadTimeoutMs(),
config.getPeerNodeTotalConnections(),
config.getPeerNodeTotalConnectionsPerHost(),
config.getPeerNodeConnectionIdleTimeoutSeconds());
jerseyApacheClient = jerseyClient.getClient();
} catch (Throwable e) {
throw new RuntimeException(
"Cannot Create new Replica Node :" + name);
}
}
}
try {
String serviceUrlHost = new URL(serviceUrl).getHost();
Monitors.registerObject(serviceUrlHost, this);
} catch (Throwable e) {
logger.error("Cannot register monitors for Peer eureka node :"
+ serviceUrl, e);
}
}
/**
* Sends the registration information of {@link InstanceInfo} receiving by
* this node to the peer node represented by this class.
*
* @param info
* the instance information {@link InstanceInfo} of any instance
* that is send to this instance.
* @throws Exception
*/
public void register(final InstanceInfo info) throws Exception {
ReplicationTask replicationTask = new ReplicationTask(info
.getAppName(), info.getId(), Action.Register) {
public int execute() {
CurrentRequestVersion.set(Version.V2);
String urlPath = "apps/" + info.getAppName();
ClientResponse response = null;
try {
response = jerseyApacheClient.resource(serviceUrl)
.path(urlPath).header(HEADER_REPLICATION, "true")
.type(MediaType.APPLICATION_JSON_TYPE)
.post(ClientResponse.class, info);
return response.getStatus();
} finally {
if (response != null) {
response.close();
}
}
}
@Override
public boolean shouldReplicateInstanceInfo () {
return true;
}
};
// Set the actual object to be registered in the task for use in batch operations
replicationTask.setInstanceInfo(info);
boolean success = registerBatcher.process(replicationTask);
if (!success) {
logger.error("Cannot find space in the replication pool for "
+ this.serviceUrl
+ ". Check the network connectivity or the traffic");
}
}
/**
* Send the cancellation information of an instance to the node represented
* by this class.
*
* @param appName
* the application name of the instance.
* @param id
* the unique identifier of the instance.
* @throws Exception
*/
public void cancel(final String appName, final String id) throws Exception {
boolean success = cancelBatcher.process(new ReplicationTask(appName,
id, Action.Cancel) {
@Override
public int execute() {
ClientResponse response = null;
try {
String urlPath = "apps/" + appName + "/" + id;
response = jerseyApacheClient.resource(serviceUrl)
.path(urlPath).header(HEADER_REPLICATION, "true")
.delete(ClientResponse.class);
return response.getStatus();
} finally {
if (response != null) {
response.close();
}
}
}
@Override
public void handleFailure(int statusCode) throws Throwable {
super.handleFailure(statusCode);
if (statusCode == 404) {
logger.warn(name + appName + "/" + id
+ " : delete: missing entry.");
}
}
});
if (!success) {
logger.error("Cannot find space in the replication pool for "
+ this.serviceUrl
+ ". Check the network connectivity or the traffic");
}
}
/**
* Send the heartbeat information of an instance to the node represented by
* this class. If the instance does not exist the node, the instance
* registration information is sent again to the peer node.
*
* @param appName
* the application name of the instance.
* @param id
* the unique identifier of the instance.
* @param info
* the instance info {@link InstanceInfo} of the instance.
* @param overriddenStatus
* the overridden status information if any of the instance.
* @return true, if the instance exists in the peer node, false otherwise.
* @throws Throwable
*/
public void heartbeat(final String appName, final String id,
final InstanceInfo info, final InstanceStatus overriddenStatus,
boolean primeConnection) throws Throwable {
if (primeConnection) {
sendHeartBeat(appName, id, info, overriddenStatus, null);
return;
}
ReplicationTask replicationTask = new ReplicationTask(appName,
id, Action.Heartbeat) {
@Override
public int execute() throws Throwable {
return sendHeartBeat(appName, id, info, overriddenStatus, this);
}
@Override
public void handleFailure(int statusCode) throws Throwable {
super.handleFailure(statusCode);
if (statusCode == 404) {
logger.warn(name + appName + "/" + id
+ " : heartbeat: missing entry.");
if (info != null) {
logger.warn(
"Cannot find instance id {} and hence replicating the instance with status {}",
info.getId(), info.getStatus().toString());
register(info);
}
} else if (config.shouldSyncWhenTimestampDiffers() && this.getPeerInstanceInfo() != null) {
syncInstancesIfTimestampDiffers(id, info, this.getPeerInstanceInfo());
}
}
};
replicationTask.setInstanceInfo(info);
replicationTask.setOverriddenStatus(overriddenStatus);
boolean success = heartBeatBatcher.process(replicationTask);
if (!success) {
logger.error("Cannot find space in the replication pool for "
+ this.serviceUrl
+ ". Check the network connectivity or the traffic");
}
}
/**
* Send the status information of of the ASG represented by the instance.
*
*
* ASG (Autoscaling group) names are available for instances in AWS and the
* ASG information is used for determining if the instance should be
* registered as {@link InstanceStatus#DOWN} or {@link InstanceStatus#UP}.
*
* @param asgName
* the asg name if any of this instance.
* @param newStatus
* the new status of the ASG.
*/
public void statusUpdate(final String asgName, final ASGStatus newStatus) {
boolean success = asgStatusBatcher.process(new ReplicationTask(asgName,
asgName, Action.StatusUpdate) {
public int execute() {
ClientResponse response = null;
try {
String urlPath = "asg/" + asgName + "/status";
response = jerseyApacheClient.resource(serviceUrl)
.path(urlPath)
.queryParam("value", newStatus.name())
.header(HEADER_REPLICATION, "true")
.put(ClientResponse.class);
return response.getStatus();
} finally {
if (response != null) {
response.close();
}
}
}
@Override
public boolean isBatchingSupported() {
return false;
}
});
if (!success) {
logger.error("Cannot find space in the replication pool for "
+ this.serviceUrl
+ ". Check the network connectivity or the traffic");
}
}
/**
*
* Send the status update of the instance.
*
* @param appName
* the application name of the instance.
* @param id
* the unique identifier of the instance.
* @param newStatus
* the new status of the instance.
* @param info
* the instance information of the instance.
* @return true if the update succeeded, false otherwise.
*/
public void statusUpdate(final String appName, final String id,
final InstanceStatus newStatus, final InstanceInfo info) {
boolean success = statusBatcher.process(new ReplicationTask(appName,
id, Action.StatusUpdate) {
@Override
public int execute() {
CurrentRequestVersion.set(Version.V2);
ClientResponse response = null;
try {
String urlPath = "apps/" + appName + "/" + id + "/status";
response = jerseyApacheClient
.resource(serviceUrl)
.path(urlPath)
.queryParam("value", newStatus.name())
.queryParam("lastDirtyTimestamp",
info.getLastDirtyTimestamp().toString())
.header(HEADER_REPLICATION, "true")
.put(ClientResponse.class);
return response.getStatus();
} finally {
if (response != null) {
response.close();
}
}
}
});
if (!success) {
logger.error("Cannot find space in the replication pool for "
+ this.serviceUrl
+ ". Check the network connectivity or the traffic");
}
}
/**
* Get the service Url of the peer eureka node.
*
* @return the service Url of the peer eureka node.
*/
public String getServiceUrl() {
return serviceUrl;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((serviceUrl == null) ? 0 : serviceUrl.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
PeerEurekaNode other = (PeerEurekaNode) obj;
if (serviceUrl == null) {
if (other.serviceUrl != null)
return false;
} else if (!serviceUrl.equals(other.serviceUrl))
return false;
return true;
}
/**
* Destroy the resources created for communication with the Peer Eureka
* Server.
*/
public void destroyResources() {
if (jerseyClient != null) {
try {
jerseyClient.destroyResources();
} catch (Throwable ignore) {
}
}
}
/**
* Shuts down all resources used for peer replication.
*/
public void shutDown() {
if (this.heartBeatBatcher != null) {
this.heartBeatBatcher.stop();
}
if (this.registerBatcher != null) {
this.registerBatcher.stop();
}
if (this.cancelBatcher != null) {
this.cancelBatcher.stop();
}
if (this.statusBatcher != null) {
this.statusBatcher.stop();
}
if (this.asgStatusBatcher != null) {
this.asgStatusBatcher.stop();
}
}
/**
* Sends heartbeats to peer eureka nodes.
*
* @param appName
* - the application name for which the hearbeat needs to be
* sent.
* @param id
* - the unique identifier of the heartbeat.
* @param info
* - the {@link InstanceInfo} of the instance for which the
* heartbeat need to be sent.
* @param overriddenStatus
* the overridden status of the instance.
* @throws Throwable
*/
private int sendHeartBeat(final String appName, final String id,
final InstanceInfo info, final InstanceStatus overriddenStatus, ReplicationTask task)
throws Throwable {
ClientResponse response = null;
try {
String urlPath = "apps/" + appName + "/" + id;
WebResource r = jerseyApacheClient
.resource(serviceUrl)
.path(urlPath)
.queryParam("status", info.getStatus().toString())
.queryParam("lastDirtyTimestamp",
info.getLastDirtyTimestamp().toString());
if (overriddenStatus != null) {
r = r.queryParam("overriddenstatus", overriddenStatus.name());
}
response = r.accept(MediaType.APPLICATION_JSON_TYPE).header(HEADER_REPLICATION, "true").put(
ClientResponse.class);
InstanceInfo infoFromPeer = null;
if ((response.getStatus() == Status.OK.getStatusCode()) && response.hasEntity()) {
infoFromPeer = response
.getEntity(InstanceInfo.class);
}
if ((task != null) && (infoFromPeer != null)) {
task.setPeerInstanceInfo(infoFromPeer);
}
return response.getStatus();
} finally {
if (response != null) {
response.close();
}
}
}
/**
* Check if the exception is some sort of network timeout exception (ie)
* read,connect.
*
* @param e
* The exception for which the information needs to be found.
* @return true, if it is a network timeout, false otherwise.
*/
private boolean isNetworkConnectException(Throwable e) {
while (e.getCause() != null) {
if (IOException.class.isInstance(e.getCause())) {
return true;
}
e = e.getCause();
}
return false;
}
/**
* Class that simply tracks the time the task was created.
*/
private abstract class ReplicationTask {
private long submitTime = System.currentTimeMillis();
private String appName;
private String id;
private Action action;
private InstanceInfo instanceInfo;
private InstanceInfo peerInstanceInfo;
private InstanceStatus overriddenStatus;
public String getAppName() {
return appName;
}
public String getId() {
return id;
}
public Action getAction() {
return action;
}
public long getSubmitTime() {
return this.submitTime;
}
public InstanceInfo getInstanceInfo() {
return instanceInfo;
}
public void setInstanceInfo(InstanceInfo instanceInfo) {
this.instanceInfo = instanceInfo;
}
public InstanceStatus getOverriddenStatus() {
return overriddenStatus;
}
public void setOverriddenStatus(InstanceStatus overriddenStatus) {
this.overriddenStatus = overriddenStatus;
}
public InstanceInfo getPeerInstanceInfo() {
return peerInstanceInfo;
}
public void setPeerInstanceInfo(InstanceInfo peerInstanceInfo) {
this.peerInstanceInfo = peerInstanceInfo;
}
public ReplicationTask(String appName, String id, Action action) {
this.appName = appName;
this.id = id;
this.action = action;
}
public abstract int execute() throws Throwable;
public void handleFailure(int statusCode) throws Throwable {
Object[] args = { this.appName, this.id, this.action.name(),
statusCode };
logger.warn(
"The replication of {}/{}/{} failed with response code {}",
args);
}
public boolean shouldReplicateInstanceInfo() {
return false;
}
public boolean isBatchingSupported() {
return config.shouldBatchReplication();
}
}
@Serializer("com.netflix.discovery.converters.EntityBodyConverter")
@XStreamAlias("repllist")
public static class ReplicationList {
private List replicationList = new ArrayList();
public void addReplicationInstance(PeerEurekaNode.ReplicationInstance instance) {
replicationList.add(instance);
}
public List getList() {
return this.replicationList;
}
}
@Serializer("com.netflix.discovery.converters.EntityBodyConverter")
@XStreamAlias("batchresponse")
/**
* The jersey resource class that generates the replication batch response.
*/
public static class ReplicationListResponse {
private List responseList = new ArrayList();
public List getResponseList() {
return responseList;
}
public void addResponse(
PeerEurekaNode.ReplicationInstanceResponse singleResponse) {
responseList.add(singleResponse);
}
}
@Serializer("com.netflix.discovery.converters.EntityBodyConverter")
@XStreamAlias("instanceresponse")
/**
* The jersey resource class that generates the replication indivdiual response.
*/
public static class ReplicationInstanceResponse {
private int statusCode;
private InstanceInfo responseEntity;
public static final class Builder {
private ReplicationInstanceResponse response = new ReplicationInstanceResponse();
public Builder setStatusCode(int statusCode) {
response.statusCode = statusCode;
return this;
}
public Builder setResponseEntity(InstanceInfo entity) {
response.responseEntity = entity;
return this;
}
public ReplicationInstanceResponse build() {
return response;
}
}
public int getStatusCode() {
return statusCode;
}
public InstanceInfo getResponseEntity() {
return responseEntity;
}
}
@Serializer("com.netflix.discovery.converters.EntityBodyConverter")
@XStreamAlias("replinstance")
/**
* The jersey resource class that generates a particular replication event
*/
public static class ReplicationInstance {
private String appName;
private String id;
private Long lastDirtyTimestamp;
private String overriddenStatus;
private String status;
private InstanceInfo instanceInfo;
private Action action;
public String getAppName() {
return appName;
}
public void setAppName(String appName) {
this.appName = appName;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public Long getLastDirtyTimestamp() {
return lastDirtyTimestamp;
}
public void setLastDirtyTimestamp(long lastDirtyTimestamp) {
this.lastDirtyTimestamp = lastDirtyTimestamp;
}
public String getOverriddenStatus() {
return overriddenStatus;
}
public void setOverriddenStatus(String overriddenStatus) {
this.overriddenStatus = overriddenStatus;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public InstanceInfo getInstanceInfo() {
return instanceInfo;
}
public void setInstanceInfo(InstanceInfo instanceInfo) {
this.instanceInfo = instanceInfo;
}
public Action getAction() {
return action;
}
public void setAction(Action action) {
this.action = action;
}
}
/**
* Synchronize {@link InstanceInfo} information if the timestamp between
* this node and the peer eureka nodes vary.
*/
private void syncInstancesIfTimestampDiffers(String id, InstanceInfo info, InstanceInfo infoFromPeer
) {
try {
if (infoFromPeer != null) {
Object[] args = { id, info.getLastDirtyTimestamp(),
infoFromPeer.getLastDirtyTimestamp() };
logger.warn(
"Peer wants us to take the instance information from it, since the timestamp differs,Id : {} My Timestamp : {}, Peer's timestamp: {}",
args);
if ((infoFromPeer.getOverriddenStatus() != null)
&& !(InstanceStatus.UNKNOWN.equals(infoFromPeer
.getOverriddenStatus()))) {
Object[] args1 = { id, info.getOverriddenStatus(),
infoFromPeer.getOverriddenStatus() };
logger.warn(
"Overridden Status info -id {}, mine {}, peer's {}",
args1);
PeerAwareInstanceRegistry.getInstance()
.storeOverriddenStatusIfRequired(id,
infoFromPeer.getOverriddenStatus());
}
PeerAwareInstanceRegistry.getInstance().register(
infoFromPeer, true);
}
} catch (Throwable e) {
logger.warn("Exception when trying to get information from peer :",
e);
}
}
/**
* Get the batcher to process the replication events asynchronously.
*
* @param serviceUrl
* the serviceUrl for which the events needs to be replicated
* @param action
* the action that indicates the type of replication event -
* registrations, heartbeat etc
* @return The batcher instance
*/
private MessageBatcher getBatcher(final String serviceUrl, String pBatcherName) {
String batcherName = null;
try {
batcherName = new URL(serviceUrl).getHost();
} catch (MalformedURLException e1) {
batcherName = serviceUrl;
}
String absoluteBatcherName = batcherName + "-" + pBatcherName;
ConfigurationManager.getConfigInstance().setProperty(
"batcher." + absoluteBatcherName + ".queue.maxMessages",
config.getMaxElementsInPeerReplicationPool());
ConfigurationManager.getConfigInstance().setProperty(
"batcher." + absoluteBatcherName + ".batch.maxMessages",
250);
ConfigurationManager.getConfigInstance().setProperty(
"batcher." + absoluteBatcherName + ".keepAliveTime",
config.getMaxIdleThreadAgeInMinutesForPeerReplication() * 60);
ConfigurationManager.getConfigInstance().setProperty(
"batcher." + absoluteBatcherName + ".maxThreads",
config.getMaxThreadsForPeerReplication());
return BatcherFactory.createBatcher(absoluteBatcherName,
new MessageProcessor() {
private String BATCH_URL_PATH = "peerreplication/batch/";;
@Override
public void process(List tasks) {
if (!tasks.get(0).isBatchingSupported()) {
executeSingle(tasks);
} else if (!executeBatch(tasks)) {
executeSingle(tasks);
}
}
private boolean executeBatch(List tasks) {
boolean success = true;
boolean done = true;
PeerEurekaNode.ReplicationList list = new PeerEurekaNode.ReplicationList();
for (ReplicationTask task : tasks) {
if (System.currentTimeMillis()
- config.getMaxTimeForReplication() > task
.getSubmitTime()) {
Object[] args = { task.getAppName(), task.getId(),
task.getAction(),
new Date(System.currentTimeMillis()),
new Date(task.getSubmitTime()) };
logger.warn(
"Replication events older than the threshold. AppName : {}, Id: {}, Action : {}, Current Time : {}, Submit Time :{}",
args);
continue;
}
PeerEurekaNode.ReplicationInstance instance = new PeerEurekaNode.ReplicationInstance();
instance.setAppName(task.getAppName());
instance.setId(task.getId());
InstanceInfo instanceInfo = task.getInstanceInfo();
if (instanceInfo != null) {
String overriddenStatus = (task
.getOverriddenStatus() == null ? null
: task.getOverriddenStatus().name());
instance.setOverriddenStatus(overriddenStatus);
instance.setLastDirtyTimestamp(instanceInfo
.getLastDirtyTimestamp());
if (task.shouldReplicateInstanceInfo()) {
instance.setInstanceInfo(instanceInfo);
}
String instanceStatus = instanceInfo
.getStatus() == null ? null
: instanceInfo.getStatus().name();
instance.setStatus(instanceStatus);
}
instance.setAction(task.getAction());
list.addReplicationInstance(instance);
}
if (list.getList().size() == 0) {
return true;
}
Action action = list.getList().get(0).action;
DynamicCounter.increment("Batch_"
+ action
+ "_tries");
do {
done = true;
ClientResponse response = null;
try {
response = jerseyApacheClient
.resource(serviceUrl)
.path(BATCH_URL_PATH)
.accept(MediaType.APPLICATION_JSON_TYPE)
.type(MediaType.APPLICATION_JSON_TYPE)
.post(ClientResponse.class, list);
if (!isSuccess(response.getStatus())) {
return false;
}
DynamicCounter.increment("Batch_"
+ action
+ "_success");
PeerEurekaNode.ReplicationListResponse batchResponse = response
.getEntity(PeerEurekaNode.ReplicationListResponse.class);
int ctr = 0;
for (PeerEurekaNode.ReplicationInstanceResponse singleResponse : batchResponse
.getResponseList()) {
int statusCode = singleResponse
.getStatusCode();
if ((!isSuccess(statusCode))
|| (singleResponse
.getResponseEntity() != null)) {
if (singleResponse.getResponseEntity() != null) {
tasks.get(ctr)
.setPeerInstanceInfo(
singleResponse
.getResponseEntity());
}
tasks.get(ctr)
.handleFailure(statusCode);
}
++ctr;
}
done = true;
} catch (Throwable e) {
if ((isNetworkConnectException(e))) {
DynamicCounter.increment("Batch_"
+ action
+ "_retries");
done = false;
} else {
success = false;
logger.info(
"Not re-trying this exception because it does not seem to be a network exception",
e);
}
} finally {
if (response != null) {
response.close();
}
}
} while (!done);
return success;
}
private void executeSingle(List tasks) {
for (ReplicationTask task : tasks) {
boolean done = true;
do {
done = true;
try {
if (System.currentTimeMillis()
- config.getMaxTimeForReplication() > task
.getSubmitTime()) {
Object[] args = {
task.getAppName(),
task.getId(),
task.getAction(),
new Date(System.currentTimeMillis()),
new Date(task.getSubmitTime()) };
logger.warn(
"Replication events older than the threshold. AppName : {}, Id: {}, Action : {}, Current Time : {}, Submit Time :{}",
args);
continue;
}
DynamicCounter.increment("Single_"
+ task.getAction().name()
+ "_tries");
int statusCode = task.execute();
if (!isSuccess(statusCode)) {
task.handleFailure(statusCode);
}
DynamicCounter.increment("Single_"
+ task.getAction().name()
+ "_success");
} catch (Throwable e) {
logger.error(
name + task.getAppName() + "/"
+ task.getId() + ":"
+ task.getAction(), e);
try {
Thread.sleep(RETRY_SLEEP_TIME_MS);
} catch (InterruptedException e1) {
}
if ((isNetworkConnectException(e))) {
DynamicCounter.increment(task
.getAction().name()
+ "_retries");
done = false;
} else {
logger.info(
"Not re-trying this exception because it does not seem to be a network exception",
e);
}
}
} while (!done);
}
}
});
}
private boolean isSuccess(int statusCode) {
return statusCode >= 200
&& statusCode < 300;
}
}