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/**
* 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
* 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.hadoop.hbase.replication.regionserver;
import static org.apache.hadoop.hbase.wal.AbstractFSWALProvider.getArchivedLogPath;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.PriorityBlockingQueue;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.commons.lang3.StringUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.Server;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableDescriptors;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.regionserver.RSRpcServices;
import org.apache.hadoop.hbase.regionserver.RegionServerCoprocessorHost;
import org.apache.hadoop.hbase.replication.ChainWALEntryFilter;
import org.apache.hadoop.hbase.replication.ClusterMarkingEntryFilter;
import org.apache.hadoop.hbase.replication.ReplicationEndpoint;
import org.apache.hadoop.hbase.replication.ReplicationException;
import org.apache.hadoop.hbase.replication.ReplicationPeer;
import org.apache.hadoop.hbase.replication.ReplicationQueueInfo;
import org.apache.hadoop.hbase.replication.ReplicationQueueStorage;
import org.apache.hadoop.hbase.replication.SystemTableWALEntryFilter;
import org.apache.hadoop.hbase.replication.WALEntryFilter;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.Pair;
import org.apache.hadoop.hbase.util.Threads;
import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;
import org.apache.hadoop.hbase.wal.WAL.Entry;
import org.apache.yetus.audience.InterfaceAudience;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hbase.thirdparty.com.google.common.collect.Lists;
/**
* Class that handles the source of a replication stream.
* Currently does not handle more than 1 slave
* For each slave cluster it selects a random number of peers
* using a replication ratio. For example, if replication ration = 0.1
* and slave cluster has 100 region servers, 10 will be selected.
*
* A stream is considered down when we cannot contact a region server on the
* peer cluster for more than 55 seconds by default.
*
*/
@InterfaceAudience.Private
public class ReplicationSource implements ReplicationSourceInterface {
private static final Logger LOG = LoggerFactory.getLogger(ReplicationSource.class);
// Queues of logs to process, entry in format of walGroupId->queue,
// each presents a queue for one wal group
private Map> queues = new HashMap<>();
// per group queue size, keep no more than this number of logs in each wal group
protected int queueSizePerGroup;
protected ReplicationQueueStorage queueStorage;
protected ReplicationPeer replicationPeer;
protected Configuration conf;
protected ReplicationQueueInfo replicationQueueInfo;
// id of the peer cluster this source replicates to
private String peerId;
// The manager of all sources to which we ping back our progress
protected ReplicationSourceManager manager;
// Should we stop everything?
protected Server server;
// How long should we sleep for each retry
private long sleepForRetries;
protected FileSystem fs;
// id of this cluster
private UUID clusterId;
// total number of edits we replicated
private AtomicLong totalReplicatedEdits = new AtomicLong(0);
// The znode we currently play with
protected String queueId;
// Maximum number of retries before taking bold actions
private int maxRetriesMultiplier;
// Indicates if this particular source is running
volatile boolean sourceRunning = false;
// Metrics for this source
private MetricsSource metrics;
// WARN threshold for the number of queued logs, defaults to 2
private int logQueueWarnThreshold;
// ReplicationEndpoint which will handle the actual replication
private volatile ReplicationEndpoint replicationEndpoint;
// A filter (or a chain of filters) for the WAL entries.
protected volatile WALEntryFilter walEntryFilter;
// throttler
private ReplicationThrottler throttler;
private long defaultBandwidth;
private long currentBandwidth;
private WALFileLengthProvider walFileLengthProvider;
protected final ConcurrentHashMap workerThreads =
new ConcurrentHashMap<>();
private AtomicLong totalBufferUsed;
public static final String WAIT_ON_ENDPOINT_SECONDS =
"hbase.replication.wait.on.endpoint.seconds";
public static final int DEFAULT_WAIT_ON_ENDPOINT_SECONDS = 30;
private int waitOnEndpointSeconds = -1;
private Thread initThread;
/**
* Instantiation method used by region servers
* @param conf configuration to use
* @param fs file system to use
* @param manager replication manager to ping to
* @param server the server for this region server
* @param queueId the id of our replication queue
* @param clusterId unique UUID for the cluster
* @param metrics metrics for replication source
*/
@Override
public void init(Configuration conf, FileSystem fs, ReplicationSourceManager manager,
ReplicationQueueStorage queueStorage, ReplicationPeer replicationPeer, Server server,
String queueId, UUID clusterId, WALFileLengthProvider walFileLengthProvider,
MetricsSource metrics) throws IOException {
this.server = server;
this.conf = HBaseConfiguration.create(conf);
this.waitOnEndpointSeconds =
this.conf.getInt(WAIT_ON_ENDPOINT_SECONDS, DEFAULT_WAIT_ON_ENDPOINT_SECONDS);
decorateConf();
this.sleepForRetries =
this.conf.getLong("replication.source.sleepforretries", 1000); // 1 second
this.maxRetriesMultiplier =
this.conf.getInt("replication.source.maxretriesmultiplier", 300); // 5 minutes @ 1 sec per
this.queueSizePerGroup = this.conf.getInt("hbase.regionserver.maxlogs", 32);
this.queueStorage = queueStorage;
this.replicationPeer = replicationPeer;
this.manager = manager;
this.fs = fs;
this.metrics = metrics;
this.clusterId = clusterId;
this.queueId = queueId;
this.replicationQueueInfo = new ReplicationQueueInfo(queueId);
// ReplicationQueueInfo parses the peerId out of the znode for us
this.peerId = this.replicationQueueInfo.getPeerId();
this.logQueueWarnThreshold = this.conf.getInt("replication.source.log.queue.warn", 2);
defaultBandwidth = this.conf.getLong("replication.source.per.peer.node.bandwidth", 0);
currentBandwidth = getCurrentBandwidth();
this.throttler = new ReplicationThrottler((double) currentBandwidth / 10.0);
this.totalBufferUsed = manager.getTotalBufferUsed();
this.walFileLengthProvider = walFileLengthProvider;
LOG.info("queueId=" + queueId + ", ReplicationSource : " + peerId
+ ", currentBandwidth=" + this.currentBandwidth);
}
private void decorateConf() {
String replicationCodec = this.conf.get(HConstants.REPLICATION_CODEC_CONF_KEY);
if (StringUtils.isNotEmpty(replicationCodec)) {
this.conf.set(HConstants.RPC_CODEC_CONF_KEY, replicationCodec);
}
}
@Override
public void enqueueLog(Path log) {
String logPrefix = AbstractFSWALProvider.getWALPrefixFromWALName(log.getName());
PriorityBlockingQueue queue = queues.get(logPrefix);
if (queue == null) {
queue = new PriorityBlockingQueue<>(queueSizePerGroup, new LogsComparator());
queues.put(logPrefix, queue);
if (this.isSourceActive() && this.walEntryFilter != null) {
// new wal group observed after source startup, start a new worker thread to track it
// notice: it's possible that log enqueued when this.running is set but worker thread
// still not launched, so it's necessary to check workerThreads before start the worker
tryStartNewShipper(logPrefix, queue);
}
}
queue.put(log);
if (LOG.isTraceEnabled()) {
LOG.trace("{} Added log file {} to queue of source {}.", logPeerId(), logPrefix,
this.replicationQueueInfo.getQueueId());
}
this.metrics.incrSizeOfLogQueue();
// This will log a warning for each new log that gets created above the warn threshold
int queueSize = queue.size();
if (queueSize > this.logQueueWarnThreshold) {
LOG.warn("WAL group " + logPrefix + " queue size: " + queueSize
+ " exceeds value of replication.source.log.queue.warn: " + logQueueWarnThreshold);
}
}
@Override
public void addHFileRefs(TableName tableName, byte[] family, List> pairs)
throws ReplicationException {
Map> tableCFMap = replicationPeer.getTableCFs();
if (tableCFMap != null) {
List tableCfs = tableCFMap.get(tableName);
if (tableCFMap.containsKey(tableName)
&& (tableCfs == null || tableCfs.contains(Bytes.toString(family)))) {
this.queueStorage.addHFileRefs(peerId, pairs);
metrics.incrSizeOfHFileRefsQueue(pairs.size());
} else {
LOG.debug("HFiles will not be replicated belonging to the table {} family {} to peer id {}",
tableName, Bytes.toString(family), peerId);
}
} else {
// user has explicitly not defined any table cfs for replication, means replicate all the
// data
this.queueStorage.addHFileRefs(peerId, pairs);
metrics.incrSizeOfHFileRefsQueue(pairs.size());
}
}
private ReplicationEndpoint createReplicationEndpoint()
throws InstantiationException, IllegalAccessException, ClassNotFoundException, IOException {
RegionServerCoprocessorHost rsServerHost = null;
if (server instanceof HRegionServer) {
rsServerHost = ((HRegionServer) server).getRegionServerCoprocessorHost();
}
String replicationEndpointImpl = replicationPeer.getPeerConfig().getReplicationEndpointImpl();
ReplicationEndpoint replicationEndpoint;
if (replicationEndpointImpl == null) {
// Default to HBase inter-cluster replication endpoint; skip reflection
replicationEndpoint = new HBaseInterClusterReplicationEndpoint();
} else {
try {
replicationEndpoint = Class.forName(replicationEndpointImpl)
.asSubclass(ReplicationEndpoint.class)
.getDeclaredConstructor()
.newInstance();
} catch (NoSuchMethodException | InvocationTargetException e) {
throw new IllegalArgumentException(e);
}
}
if (rsServerHost != null) {
ReplicationEndpoint newReplicationEndPoint =
rsServerHost.postCreateReplicationEndPoint(replicationEndpoint);
if (newReplicationEndPoint != null) {
// Override the newly created endpoint from the hook with configured end point
replicationEndpoint = newReplicationEndPoint;
}
}
return replicationEndpoint;
}
private void initAndStartReplicationEndpoint(ReplicationEndpoint replicationEndpoint)
throws IOException, TimeoutException {
TableDescriptors tableDescriptors = null;
if (server instanceof HRegionServer) {
tableDescriptors = ((HRegionServer) server).getTableDescriptors();
}
replicationEndpoint
.init(new ReplicationEndpoint.Context(conf, replicationPeer.getConfiguration(), fs, peerId,
clusterId, replicationPeer, metrics, tableDescriptors, server));
replicationEndpoint.start();
replicationEndpoint.awaitRunning(waitOnEndpointSeconds, TimeUnit.SECONDS);
}
private void initializeWALEntryFilter(UUID peerClusterId) {
// get the WALEntryFilter from ReplicationEndpoint and add it to default filters
ArrayList filters =
Lists. newArrayList(new SystemTableWALEntryFilter());
WALEntryFilter filterFromEndpoint = this.replicationEndpoint.getWALEntryfilter();
if (filterFromEndpoint != null) {
filters.add(filterFromEndpoint);
}
filters.add(new ClusterMarkingEntryFilter(clusterId, peerClusterId, replicationEndpoint));
this.walEntryFilter = new ChainWALEntryFilter(filters);
}
private void tryStartNewShipper(String walGroupId, PriorityBlockingQueue queue) {
ReplicationSourceShipper worker = createNewShipper(walGroupId, queue);
ReplicationSourceShipper extant = workerThreads.putIfAbsent(walGroupId, worker);
if (extant != null) {
if(LOG.isDebugEnabled()) {
LOG.debug("{} Someone has beat us to start a worker thread for wal group {}", logPeerId(),
walGroupId);
}
} else {
if(LOG.isDebugEnabled()) {
LOG.debug("{} Starting up worker for wal group {}", logPeerId(), walGroupId);
}
ReplicationSourceWALReader walReader =
createNewWALReader(walGroupId, queue, worker.getStartPosition());
Threads.setDaemonThreadRunning(walReader, Thread.currentThread().getName() +
".replicationSource.wal-reader." + walGroupId + "," + queueId, this::uncaughtException);
worker.setWALReader(walReader);
worker.startup(this::uncaughtException);
}
}
@Override
public Map getWalGroupStatus() {
Map sourceReplicationStatus = new TreeMap<>();
long lastTimeStamp, ageOfLastShippedOp, replicationDelay, fileSize;
for (Map.Entry walGroupShipper : workerThreads.entrySet()) {
String walGroupId = walGroupShipper.getKey();
ReplicationSourceShipper shipper = walGroupShipper.getValue();
lastTimeStamp = metrics.getLastTimeStampOfWalGroup(walGroupId);
ageOfLastShippedOp = metrics.getAgeofLastShippedOp(walGroupId);
int queueSize = queues.get(walGroupId).size();
replicationDelay =
ReplicationLoad.calculateReplicationDelay(ageOfLastShippedOp, lastTimeStamp, queueSize);
Path currentPath = shipper.getCurrentPath();
fileSize = -1;
if (currentPath != null) {
try {
fileSize = getFileSize(currentPath);
} catch (IOException e) {
LOG.warn("Ignore the exception as the file size of HLog only affects the web ui", e);
}
} else {
currentPath = new Path("NO_LOGS_IN_QUEUE");
LOG.warn("{} No replication ongoing, waiting for new log", logPeerId());
}
ReplicationStatus.ReplicationStatusBuilder statusBuilder = ReplicationStatus.newBuilder();
statusBuilder.withPeerId(this.getPeerId())
.withQueueSize(queueSize)
.withWalGroup(walGroupId)
.withCurrentPath(currentPath)
.withCurrentPosition(shipper.getCurrentPosition())
.withFileSize(fileSize)
.withAgeOfLastShippedOp(ageOfLastShippedOp)
.withReplicationDelay(replicationDelay);
sourceReplicationStatus.put(this.getPeerId() + "=>" + walGroupId, statusBuilder.build());
}
return sourceReplicationStatus;
}
private long getFileSize(Path currentPath) throws IOException {
long fileSize;
try {
fileSize = fs.getContentSummary(currentPath).getLength();
} catch (FileNotFoundException e) {
currentPath = getArchivedLogPath(currentPath, conf);
fileSize = fs.getContentSummary(currentPath).getLength();
}
return fileSize;
}
protected ReplicationSourceShipper createNewShipper(String walGroupId,
PriorityBlockingQueue queue) {
return new ReplicationSourceShipper(conf, walGroupId, queue, this);
}
private ReplicationSourceWALReader createNewWALReader(String walGroupId,
PriorityBlockingQueue queue, long startPosition) {
return replicationPeer.getPeerConfig().isSerial()
? new SerialReplicationSourceWALReader(fs, conf, queue, startPosition, walEntryFilter, this)
: new ReplicationSourceWALReader(fs, conf, queue, startPosition, walEntryFilter, this);
}
protected final void uncaughtException(Thread t, Throwable e) {
RSRpcServices.exitIfOOME(e);
LOG.error("Unexpected exception in {} currentPath={}",
t.getName(), getCurrentPath(), e);
server.abort("Unexpected exception in " + t.getName(), e);
}
@Override
public ReplicationEndpoint getReplicationEndpoint() {
return this.replicationEndpoint;
}
@Override
public ReplicationSourceManager getSourceManager() {
return this.manager;
}
@Override
public void tryThrottle(int batchSize) throws InterruptedException {
checkBandwidthChangeAndResetThrottler();
if (throttler.isEnabled()) {
long sleepTicks = throttler.getNextSleepInterval(batchSize);
if (sleepTicks > 0) {
if (LOG.isTraceEnabled()) {
LOG.trace("{} To sleep {}ms for throttling control", logPeerId(), sleepTicks);
}
Thread.sleep(sleepTicks);
// reset throttler's cycle start tick when sleep for throttling occurs
throttler.resetStartTick();
}
}
}
private void checkBandwidthChangeAndResetThrottler() {
long peerBandwidth = getCurrentBandwidth();
if (peerBandwidth != currentBandwidth) {
currentBandwidth = peerBandwidth;
throttler.setBandwidth((double) currentBandwidth / 10.0);
LOG.info("ReplicationSource : " + peerId
+ " bandwidth throttling changed, currentBandWidth=" + currentBandwidth);
}
}
private long getCurrentBandwidth() {
long peerBandwidth = replicationPeer.getPeerBandwidth();
// user can set peer bandwidth to 0 to use default bandwidth
return peerBandwidth != 0 ? peerBandwidth : defaultBandwidth;
}
/**
* Do the sleeping logic
* @param msg Why we sleep
* @param sleepMultiplier by how many times the default sleeping time is augmented
* @return True if sleepMultiplier is < maxRetriesMultiplier
*/
protected boolean sleepForRetries(String msg, int sleepMultiplier) {
try {
if (LOG.isTraceEnabled()) {
LOG.trace("{} {}, sleeping {} times {}",
logPeerId(), msg, sleepForRetries, sleepMultiplier);
}
Thread.sleep(this.sleepForRetries * sleepMultiplier);
} catch (InterruptedException e) {
if(LOG.isDebugEnabled()) {
LOG.debug("{} Interrupted while sleeping between retries", logPeerId());
}
Thread.currentThread().interrupt();
}
return sleepMultiplier < maxRetriesMultiplier;
}
/**
* check whether the peer is enabled or not
* @return true if the peer is enabled, otherwise false
*/
@Override
public boolean isPeerEnabled() {
return replicationPeer.isPeerEnabled();
}
private void initialize() {
int sleepMultiplier = 1;
while (this.isSourceActive()) {
ReplicationEndpoint replicationEndpoint;
try {
replicationEndpoint = createReplicationEndpoint();
} catch (Exception e) {
LOG.warn("{} error creating ReplicationEndpoint, retry", logPeerId(), e);
if (sleepForRetries("Error creating ReplicationEndpoint", sleepMultiplier)) {
sleepMultiplier++;
}
continue;
}
try {
initAndStartReplicationEndpoint(replicationEndpoint);
this.replicationEndpoint = replicationEndpoint;
break;
} catch (Exception e) {
LOG.warn("{} Error starting ReplicationEndpoint, retry", logPeerId(), e);
replicationEndpoint.stop();
if (sleepForRetries("Error starting ReplicationEndpoint", sleepMultiplier)) {
sleepMultiplier++;
}
}
}
if (!this.isSourceActive()) {
return;
}
sleepMultiplier = 1;
UUID peerClusterId;
// delay this until we are in an asynchronous thread
for (;;) {
peerClusterId = replicationEndpoint.getPeerUUID();
if (this.isSourceActive() && peerClusterId == null) {
if(LOG.isDebugEnabled()) {
LOG.debug("{} Could not connect to Peer ZK. Sleeping for {} millis", logPeerId(),
(this.sleepForRetries * sleepMultiplier));
}
if (sleepForRetries("Cannot contact the peer's zk ensemble", sleepMultiplier)) {
sleepMultiplier++;
}
} else {
break;
}
}
if (!this.isSourceActive()) {
return;
}
// In rare case, zookeeper setting may be messed up. That leads to the incorrect
// peerClusterId value, which is the same as the source clusterId
if (clusterId.equals(peerClusterId) && !replicationEndpoint.canReplicateToSameCluster()) {
this.terminate("ClusterId " + clusterId + " is replicating to itself: peerClusterId "
+ peerClusterId + " which is not allowed by ReplicationEndpoint:"
+ replicationEndpoint.getClass().getName(), null, false);
this.manager.removeSource(this);
return;
}
LOG.info("{} Source: {}, is now replicating from cluster: {}; to peer cluster: {};",
logPeerId(), this.replicationQueueInfo.getQueueId(), clusterId, peerClusterId);
initializeWALEntryFilter(peerClusterId);
// start workers
for (Map.Entry> entry : queues.entrySet()) {
String walGroupId = entry.getKey();
PriorityBlockingQueue queue = entry.getValue();
tryStartNewShipper(walGroupId, queue);
}
}
@Override
public void startup() {
// mark we are running now
this.sourceRunning = true;
initThread = new Thread(this::initialize);
Threads.setDaemonThreadRunning(initThread,
Thread.currentThread().getName() + ".replicationSource," + this.queueId,
this::uncaughtException);
}
@Override
public void terminate(String reason) {
terminate(reason, null);
}
@Override
public void terminate(String reason, Exception cause) {
terminate(reason, cause, true);
}
@Override
public void terminate(String reason, Exception cause, boolean clearMetrics) {
terminate(reason, cause, clearMetrics, true);
}
public void terminate(String reason, Exception cause, boolean clearMetrics, boolean join) {
if (cause == null) {
LOG.info("{} Closing source {} because: {}", logPeerId(), this.queueId, reason);
} else {
LOG.error("{} Closing source {} because an error occurred: {}",
logPeerId(), this.queueId, reason, cause);
}
this.sourceRunning = false;
if (initThread != null && Thread.currentThread() != initThread) {
// This usually won't happen but anyway, let's wait until the initialization thread exits.
// And notice that we may call terminate directly from the initThread so here we need to
// avoid join on ourselves.
initThread.interrupt();
Threads.shutdown(initThread, this.sleepForRetries);
}
Collection workers = workerThreads.values();
for (ReplicationSourceShipper worker : workers) {
worker.stopWorker();
worker.entryReader.setReaderRunning(false);
}
if (this.replicationEndpoint != null) {
this.replicationEndpoint.stop();
}
for (ReplicationSourceShipper worker : workers) {
if (worker.isAlive() || worker.entryReader.isAlive()) {
try {
// Wait worker to stop
Thread.sleep(this.sleepForRetries);
} catch (InterruptedException e) {
LOG.info("{} Interrupted while waiting {} to stop", logPeerId(), worker.getName());
Thread.currentThread().interrupt();
}
// If worker still is alive after waiting, interrupt it
if (worker.isAlive()) {
worker.interrupt();
}
// If entry reader is alive after waiting, interrupt it
if (worker.entryReader.isAlive()) {
worker.entryReader.interrupt();
}
}
//If worker is already stopped but there was still entries batched,
//we need to clear buffer used for non processed entries
worker.clearWALEntryBatch();
}
if (join) {
for (ReplicationSourceShipper worker : workers) {
Threads.shutdown(worker, this.sleepForRetries);
LOG.info("{} ReplicationSourceWorker {} terminated", logPeerId(), worker.getName());
}
if (this.replicationEndpoint != null) {
try {
this.replicationEndpoint.awaitTerminated(sleepForRetries * maxRetriesMultiplier,
TimeUnit.MILLISECONDS);
} catch (TimeoutException te) {
LOG.warn("{} Got exception while waiting for endpoint to shutdown "
+ "for replication source : {}", logPeerId(), this.queueId, te);
}
}
}
if (clearMetrics) {
this.metrics.clear();
}
}
@Override
public String getQueueId() {
return this.queueId;
}
@Override
public String getPeerId() {
return this.peerId;
}
@Override
public Path getCurrentPath() {
// only for testing
for (ReplicationSourceShipper worker : workerThreads.values()) {
if (worker.getCurrentPath() != null) {
return worker.getCurrentPath();
}
}
return null;
}
@Override
public boolean isSourceActive() {
return !this.server.isStopped() && this.sourceRunning;
}
/**
* Comparator used to compare logs together based on their start time
*/
public static class LogsComparator implements Comparator {
@Override
public int compare(Path o1, Path o2) {
return Long.compare(getTS(o1), getTS(o2));
}
/**
* Split a path to get the start time
* For example: 10.20.20.171%3A60020.1277499063250
* @param p path to split
* @return start time
*/
private static long getTS(Path p) {
int tsIndex = p.getName().lastIndexOf('.') + 1;
return Long.parseLong(p.getName().substring(tsIndex));
}
}
@Override
public String getStats() {
StringBuilder sb = new StringBuilder();
sb.append("Total replicated edits: ").append(totalReplicatedEdits)
.append(", current progress: \n");
for (Map.Entry entry : workerThreads.entrySet()) {
String walGroupId = entry.getKey();
ReplicationSourceShipper worker = entry.getValue();
long position = worker.getCurrentPosition();
Path currentPath = worker.getCurrentPath();
sb.append("walGroup [").append(walGroupId).append("]: ");
if (currentPath != null) {
sb.append("currently replicating from: ").append(currentPath).append(" at position: ")
.append(position).append("\n");
} else {
sb.append("no replication ongoing, waiting for new log");
}
}
return sb.toString();
}
@Override
public MetricsSource getSourceMetrics() {
return this.metrics;
}
@Override
//offsets totalBufferUsed by deducting shipped batchSize.
public void postShipEdits(List entries, int batchSize) {
if (throttler.isEnabled()) {
throttler.addPushSize(batchSize);
}
totalReplicatedEdits.addAndGet(entries.size());
long newBufferUsed = totalBufferUsed.addAndGet(-batchSize);
// Record the new buffer usage
this.manager.getGlobalMetrics().setWALReaderEditsBufferBytes(newBufferUsed);
}
@Override
public WALFileLengthProvider getWALFileLengthProvider() {
return walFileLengthProvider;
}
@Override
public ServerName getServerWALsBelongTo() {
return server.getServerName();
}
Server getServer() {
return server;
}
ReplicationQueueStorage getQueueStorage() {
return queueStorage;
}
private String logPeerId(){
return "[Source for peer " + this.getPeerId() + "]:";
}
}