hadoop RBFMetrics 源码
haddop RBFMetrics 代码
文件路径：/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/metrics/RBFMetrics.java
/**
* 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.hdfs.server.federation.metrics;
import static org.apache.hadoop.metrics2.impl.MsInfo.ProcessName;
import static org.apache.hadoop.util.Time.now;
import java.io.IOException;
import java.lang.reflect.Method;
import java.math.BigInteger;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.function.Function;
import java.util.function.ToIntFunction;
import java.util.function.ToLongFunction;
import java.util.stream.Collectors;
import javax.management.NotCompliantMBeanException;
import javax.management.ObjectName;
import javax.management.StandardMBean;
import org.apache.commons.math3.stat.descriptive.moment.StandardDeviation;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType;
import org.apache.hadoop.hdfs.server.federation.resolver.ActiveNamenodeResolver;
import org.apache.hadoop.hdfs.server.federation.resolver.FederationNamenodeContext;
import org.apache.hadoop.hdfs.server.federation.resolver.FederationNamespaceInfo;
import org.apache.hadoop.hdfs.server.federation.resolver.RemoteLocation;
import org.apache.hadoop.hdfs.server.federation.router.RBFConfigKeys;
import org.apache.hadoop.hdfs.server.federation.router.Router;
import org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer;
import org.apache.hadoop.hdfs.server.federation.router.RouterServiceState;
import org.apache.hadoop.hdfs.server.federation.router.security.RouterSecurityManager;
import org.apache.hadoop.hdfs.server.federation.store.MembershipStore;
import org.apache.hadoop.hdfs.server.federation.store.MountTableStore;
import org.apache.hadoop.hdfs.server.federation.store.RouterStore;
import org.apache.hadoop.hdfs.server.federation.store.StateStoreService;
import org.apache.hadoop.hdfs.server.federation.store.protocol.GetMountTableEntriesRequest;
import org.apache.hadoop.hdfs.server.federation.store.protocol.GetMountTableEntriesResponse;
import org.apache.hadoop.hdfs.server.federation.store.protocol.GetNamenodeRegistrationsRequest;
import org.apache.hadoop.hdfs.server.federation.store.protocol.GetNamenodeRegistrationsResponse;
import org.apache.hadoop.hdfs.server.federation.store.protocol.GetNamespaceInfoRequest;
import org.apache.hadoop.hdfs.server.federation.store.protocol.GetNamespaceInfoResponse;
import org.apache.hadoop.hdfs.server.federation.store.protocol.GetRouterRegistrationsRequest;
import org.apache.hadoop.hdfs.server.federation.store.protocol.GetRouterRegistrationsResponse;
import org.apache.hadoop.hdfs.server.federation.store.records.BaseRecord;
import org.apache.hadoop.hdfs.server.federation.store.records.MembershipState;
import org.apache.hadoop.hdfs.server.federation.store.records.MembershipStats;
import org.apache.hadoop.hdfs.server.federation.store.records.MountTable;
import org.apache.hadoop.hdfs.server.federation.store.records.RouterState;
import org.apache.hadoop.hdfs.server.federation.store.records.StateStoreVersion;
import org.apache.hadoop.metrics2.MetricsSystem;
import org.apache.hadoop.metrics2.annotation.Metric;
import org.apache.hadoop.metrics2.annotation.Metrics;
import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
import org.apache.hadoop.metrics2.lib.MetricsRegistry;
import org.apache.hadoop.metrics2.util.MBeans;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.VersionInfo;
import org.codehaus.jettison.json.JSONObject;
import org.eclipse.jetty.util.ajax.JSON;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hadoop.classification.VisibleForTesting;
/**
* Implementation of the Router metrics collector.
*/
@Metrics(name="RBFActivity", about="RBF metrics", context="dfs")
public class RBFMetrics implements RouterMBean, FederationMBean {
private static final Logger LOG =
LoggerFactory.getLogger(RBFMetrics.class);
private final MetricsRegistry registry = new MetricsRegistry("RBFMetrics");
/** Format for a date. */
private static final String DATE_FORMAT = "yyyy/MM/dd HH:mm:ss";
/** Prevent holding the page from load too long. */
private final long timeOut;
/** Enable/Disable getNodeUsage. **/
private boolean enableGetDNUsage;
/** Router interface. */
private final Router router;
/** FederationState JMX bean. */
private ObjectName routerBeanName;
private ObjectName federationBeanName;
/** Resolve the namenode for each namespace. */
private final ActiveNamenodeResolver namenodeResolver;
/** State store. */
private final StateStoreService stateStore;
/** Membership state store. */
private MembershipStore membershipStore;
/** Mount table store. */
private MountTableStore mountTableStore;
/** Router state store. */
private RouterStore routerStore;
/** The number of top token owners reported in metrics. */
private int topTokenRealOwners;
public RBFMetrics(Router router) throws IOException {
this.router = router;
try {
StandardMBean bean = new StandardMBean(this, RouterMBean.class);
this.routerBeanName = MBeans.register("Router", "Router", bean);
LOG.info("Registered Router MBean: {}", this.routerBeanName);
} catch (NotCompliantMBeanException e) {
throw new RuntimeException("Bad Router MBean setup", e);
}
try {
StandardMBean bean = new StandardMBean(this, FederationMBean.class);
this.federationBeanName = MBeans.register("Router", "FederationState",
bean);
LOG.info("Registered FederationState MBean: {}", this.federationBeanName);
} catch (NotCompliantMBeanException e) {
throw new RuntimeException("Bad FederationState MBean setup", e);
}
// Resolve namenode for each nameservice
this.namenodeResolver = this.router.getNamenodeResolver();
// State store interfaces
this.stateStore = this.router.getStateStore();
if (this.stateStore == null) {
LOG.error("State store not available");
} else {
this.membershipStore = stateStore.getRegisteredRecordStore(
MembershipStore.class);
this.mountTableStore = stateStore.getRegisteredRecordStore(
MountTableStore.class);
this.routerStore = stateStore.getRegisteredRecordStore(
RouterStore.class);
}
// Initialize the cache for the DN reports
Configuration conf = router.getConfig();
this.timeOut = conf.getTimeDuration(RBFConfigKeys.DN_REPORT_TIME_OUT,
RBFConfigKeys.DN_REPORT_TIME_OUT_MS_DEFAULT, TimeUnit.MILLISECONDS);
this.enableGetDNUsage = conf.getBoolean(RBFConfigKeys.DFS_ROUTER_ENABLE_GET_DN_USAGE_KEY,
RBFConfigKeys.DFS_ROUTER_ENABLE_GET_DN_USAGE_DEFAULT);
this.topTokenRealOwners = conf.getInt(
RBFConfigKeys.DFS_ROUTER_METRICS_TOP_NUM_TOKEN_OWNERS_KEY,
RBFConfigKeys.DFS_ROUTER_METRICS_TOP_NUM_TOKEN_OWNERS_KEY_DEFAULT);
registry.tag(ProcessName, "Router");
MetricsSystem ms = DefaultMetricsSystem.instance();
ms.register(RBFMetrics.class.getName(), "RBFActivity Metrics", this);
}
@VisibleForTesting
public void setEnableGetDNUsage(boolean enableGetDNUsage) {
this.enableGetDNUsage = enableGetDNUsage;
}
/**
* Unregister the JMX beans.
*/
public void close() {
if (this.routerBeanName != null) {
MBeans.unregister(routerBeanName);
}
if (this.federationBeanName != null) {
MBeans.unregister(federationBeanName);
}
MetricsSystem ms = DefaultMetricsSystem.instance();
ms.unregisterSource(RBFMetrics.class.getName());
}
@Override
public String getNamenodes() {
final Map<String, Map<String, Object>> info = new LinkedHashMap<>();
if (membershipStore == null) {
return "{}";
}
try {
// Get the values from the store
GetNamenodeRegistrationsRequest request =
GetNamenodeRegistrationsRequest.newInstance();
GetNamenodeRegistrationsResponse response =
membershipStore.getNamenodeRegistrations(request);
// Order the namenodes
final List<MembershipState> namenodes = response.getNamenodeMemberships();
if (namenodes == null || namenodes.size() == 0) {
return JSON.toString(info);
}
List<MembershipState> namenodesOrder = new ArrayList<>(namenodes);
Collections.sort(namenodesOrder, MembershipState.NAME_COMPARATOR);
// Dump namenodes information into JSON
for (MembershipState namenode : namenodesOrder) {
Map<String, Object> innerInfo = new HashMap<>();
Map<String, Object> map = getJson(namenode);
innerInfo.putAll(map);
long dateModified = namenode.getDateModified();
long lastHeartbeat = getSecondsSince(dateModified);
innerInfo.put("lastHeartbeat", lastHeartbeat);
MembershipStats stats = namenode.getStats();
long used = stats.getTotalSpace() - stats.getAvailableSpace();
innerInfo.put("used", used);
info.put(namenode.getNamenodeKey(),
Collections.unmodifiableMap(innerInfo));
}
} catch (IOException e) {
LOG.error("Enable to fetch json representation of namenodes {}",
e.getMessage());
return "{}";
}
return JSON.toString(info);
}
@Override
public String getNameservices() {
final Map<String, Map<String, Object>> info = new LinkedHashMap<>();
try {
final List<MembershipState> namenodes = getActiveNamenodeRegistrations();
List<MembershipState> namenodesOrder = new ArrayList<>(namenodes);
Collections.sort(namenodesOrder, MembershipState.NAME_COMPARATOR);
// Dump namenodes information into JSON
for (MembershipState namenode : namenodesOrder) {
Map<String, Object> innerInfo = new HashMap<>();
Map<String, Object> map = getJson(namenode);
innerInfo.putAll(map);
long dateModified = namenode.getDateModified();
long lastHeartbeat = getSecondsSince(dateModified);
innerInfo.put("lastHeartbeat", lastHeartbeat);
MembershipStats stats = namenode.getStats();
long used = stats.getTotalSpace() - stats.getAvailableSpace();
innerInfo.put("used", used);
info.put(namenode.getNamenodeKey(),
Collections.unmodifiableMap(innerInfo));
}
} catch (IOException e) {
LOG.error("Cannot retrieve nameservices for JMX: {}", e.getMessage());
return "{}";
}
return JSON.toString(info);
}
@Override
public String getMountTable() {
final List<Map<String, Object>> info = new LinkedList<>();
if (mountTableStore == null) {
return "[]";
}
try {
// Get all the mount points in order
GetMountTableEntriesRequest request =
GetMountTableEntriesRequest.newInstance("/");
GetMountTableEntriesResponse response =
mountTableStore.getMountTableEntries(request);
final List<MountTable> mounts = response.getEntries();
List<MountTable> orderedMounts = new ArrayList<>(mounts);
Collections.sort(orderedMounts, MountTable.SOURCE_COMPARATOR);
// Dump mount table entries information into JSON
for (MountTable entry : orderedMounts) {
// Summarize destinations
Set<String> nameservices = new LinkedHashSet<>();
Set<String> paths = new LinkedHashSet<>();
for (RemoteLocation location : entry.getDestinations()) {
nameservices.add(location.getNameserviceId());
paths.add(location.getDest());
}
Map<String, Object> map = getJson(entry);
// We add some values with a cleaner format
map.put("dateCreated", getDateString(entry.getDateCreated()));
map.put("dateModified", getDateString(entry.getDateModified()));
Map<String, Object> innerInfo = new HashMap<>();
innerInfo.putAll(map);
innerInfo.put("nameserviceId", StringUtils.join(",", nameservices));
innerInfo.put("path", StringUtils.join(",", paths));
if (nameservices.size() > 1) {
innerInfo.put("order", entry.getDestOrder().toString());
} else {
innerInfo.put("order", "");
}
innerInfo.put("readonly", entry.isReadOnly());
innerInfo.put("faulttolerant", entry.isFaultTolerant());
info.add(Collections.unmodifiableMap(innerInfo));
}
} catch (IOException e) {
LOG.error(
"Cannot generate JSON of mount table from store: {}", e.getMessage());
return "[]";
}
return JSON.toString(info);
}
@Override
public String getRouters() {
final Map<String, Map<String, Object>> info = new LinkedHashMap<>();
if (routerStore == null) {
return "{}";
}
try {
// Get all the routers in order
GetRouterRegistrationsRequest request =
GetRouterRegistrationsRequest.newInstance();
GetRouterRegistrationsResponse response =
routerStore.getRouterRegistrations(request);
final List<RouterState> routers = response.getRouters();
List<RouterState> routersOrder = new ArrayList<>(routers);
Collections.sort(routersOrder);
// Dump router information into JSON
for (RouterState record : routersOrder) {
Map<String, Object> innerInfo = new HashMap<>();
Map<String, Object> map = getJson(record);
innerInfo.putAll(map);
long dateModified = record.getDateModified();
long lastHeartbeat = getSecondsSince(dateModified);
innerInfo.put("lastHeartbeat", lastHeartbeat);
StateStoreVersion stateStoreVersion = record.getStateStoreVersion();
if (stateStoreVersion == null) {
LOG.error("Cannot get State Store versions");
} else {
setStateStoreVersions(innerInfo, stateStoreVersion);
}
info.put(record.getPrimaryKey(),
Collections.unmodifiableMap(innerInfo));
}
} catch (IOException e) {
LOG.error("Cannot get Routers JSON from the State Store", e);
return "{}";
}
return JSON.toString(info);
}
/**
* Populate the map with the State Store versions.
*
* @param map Map with the information.
* @param version State Store versions.
*/
private static void setStateStoreVersions(
Map<String, Object> map, StateStoreVersion version) {
long membershipVersion = version.getMembershipVersion();
String lastMembershipUpdate = getDateString(membershipVersion);
map.put("lastMembershipUpdate", lastMembershipUpdate);
long mountTableVersion = version.getMountTableVersion();
String lastMountTableDate = getDateString(mountTableVersion);
map.put("lastMountTableUpdate", lastMountTableDate);
}
@Override
public long getTotalCapacity() {
return getNameserviceAggregatedLong(MembershipStats::getTotalSpace);
}
@Override
public long getRemainingCapacity() {
return getNameserviceAggregatedLong(MembershipStats::getAvailableSpace);
}
@Override
public long getUsedCapacity() {
return getTotalCapacity() - getRemainingCapacity();
}
@Override
public BigInteger getTotalCapacityBigInt() {
return getNameserviceAggregatedBigInt(MembershipStats::getTotalSpace);
}
@Override
public BigInteger getRemainingCapacityBigInt() {
return getNameserviceAggregatedBigInt(MembershipStats::getAvailableSpace);
}
@Override
public long getProvidedSpace() {
return getNameserviceAggregatedLong(MembershipStats::getProvidedSpace);
}
@Override
public BigInteger getUsedCapacityBigInt() {
return getTotalCapacityBigInt().subtract(getRemainingCapacityBigInt());
}
@Override
public int getNumNameservices() {
try {
Set<FederationNamespaceInfo> nss = namenodeResolver.getNamespaces();
return nss.size();
} catch (IOException e) {
LOG.error(
"Cannot fetch number of expired registrations from the store: {}",
e.getMessage());
return 0;
}
}
@Override
public int getNumNamenodes() {
if (membershipStore == null) {
return 0;
}
try {
GetNamenodeRegistrationsRequest request =
GetNamenodeRegistrationsRequest.newInstance();
GetNamenodeRegistrationsResponse response =
membershipStore.getNamenodeRegistrations(request);
List<MembershipState> memberships = response.getNamenodeMemberships();
return memberships.size();
} catch (IOException e) {
LOG.error("Cannot retrieve numNamenodes for JMX: {}", e.getMessage());
return 0;
}
}
@Override
public int getNumExpiredNamenodes() {
if (membershipStore == null) {
return 0;
}
try {
GetNamenodeRegistrationsRequest request =
GetNamenodeRegistrationsRequest.newInstance();
GetNamenodeRegistrationsResponse response =
membershipStore.getExpiredNamenodeRegistrations(request);
List<MembershipState> expiredMemberships =
response.getNamenodeMemberships();
return expiredMemberships.size();
} catch (IOException e) {
LOG.error(
"Cannot retrieve numExpiredNamenodes for JMX: {}", e.getMessage());
return 0;
}
}
@Override
@Metric({"NumLiveNodes", "Number of live data nodes"})
public int getNumLiveNodes() {
return getNameserviceAggregatedInt(
MembershipStats::getNumOfActiveDatanodes);
}
@Override
@Metric({"NumDeadNodes", "Number of dead data nodes"})
public int getNumDeadNodes() {
return getNameserviceAggregatedInt(MembershipStats::getNumOfDeadDatanodes);
}
@Override
@Metric({"NumStaleNodes", "Number of stale data nodes"})
public int getNumStaleNodes() {
return getNameserviceAggregatedInt(
MembershipStats::getNumOfStaleDatanodes);
}
@Override
@Metric({"NumDecommissioningNodes", "Number of Decommissioning data nodes"})
public int getNumDecommissioningNodes() {
return getNameserviceAggregatedInt(
MembershipStats::getNumOfDecommissioningDatanodes);
}
@Override
@Metric({"NumDecomLiveNodes", "Number of decommissioned Live data nodes"})
public int getNumDecomLiveNodes() {
return getNameserviceAggregatedInt(
MembershipStats::getNumOfDecomActiveDatanodes);
}
@Override
@Metric({"NumDecomDeadNodes", "Number of decommissioned dead data nodes"})
public int getNumDecomDeadNodes() {
return getNameserviceAggregatedInt(
MembershipStats::getNumOfDecomDeadDatanodes);
}
@Override
@Metric({"NumInMaintenanceLiveDataNodes",
"Number of IN_MAINTENANCE live data nodes"})
public int getNumInMaintenanceLiveDataNodes() {
return getNameserviceAggregatedInt(
MembershipStats::getNumOfInMaintenanceLiveDataNodes);
}
@Override
@Metric({"NumInMaintenanceDeadDataNodes",
"Number of IN_MAINTENANCE dead data nodes"})
public int getNumInMaintenanceDeadDataNodes() {
return getNameserviceAggregatedInt(
MembershipStats::getNumOfInMaintenanceDeadDataNodes);
}
@Override
@Metric({"NumEnteringMaintenanceDataNodes",
"Number of ENTERING_MAINTENANCE data nodes"})
public int getNumEnteringMaintenanceDataNodes() {
return getNameserviceAggregatedInt(
MembershipStats::getNumOfEnteringMaintenanceDataNodes);
}
@Override // NameNodeMXBean
public String getNodeUsage() {
double median = 0;
double max = 0;
double min = 0;
double dev = 0;
final Map<String, Map<String, Object>> info = new HashMap<>();
try {
DatanodeInfo[] live = null;
if (this.enableGetDNUsage) {
RouterRpcServer rpcServer = this.router.getRpcServer();
live = rpcServer.getDatanodeReport(DatanodeReportType.LIVE, false, timeOut);
} else {
LOG.debug("Getting node usage is disabled.");
}
if (live != null && live.length > 0) {
double[] usages = new double[live.length];
int i = 0;
for (DatanodeInfo dn : live) {
usages[i++] = dn.getDfsUsedPercent();
}
Arrays.sort(usages);
median = usages[usages.length / 2];
max = usages[usages.length - 1];
min = usages[0];
StandardDeviation deviation = new StandardDeviation();
dev = deviation.evaluate(usages);
}
} catch (IOException e) {
LOG.error("Cannot get the live nodes: {}", e.getMessage());
}
final Map<String, Object> innerInfo = new HashMap<>();
innerInfo.put("min", StringUtils.format("%.2f%%", min));
innerInfo.put("median", StringUtils.format("%.2f%%", median));
innerInfo.put("max", StringUtils.format("%.2f%%", max));
innerInfo.put("stdDev", StringUtils.format("%.2f%%", dev));
info.put("nodeUsage", innerInfo);
return JSON.toString(info);
}
@Override
@Metric({"NumBlocks", "Total number of blocks"})
public long getNumBlocks() {
return getNameserviceAggregatedLong(MembershipStats::getNumOfBlocks);
}
@Override
@Metric({"NumOfMissingBlocks", "Number of missing blocks"})
public long getNumOfMissingBlocks() {
return getNameserviceAggregatedLong(MembershipStats::getNumOfBlocksMissing);
}
@Override
@Metric({"NumOfBlocksPendingReplication",
"Number of blocks pending replication"})
public long getNumOfBlocksPendingReplication() {
return getNameserviceAggregatedLong(
MembershipStats::getNumOfBlocksPendingReplication);
}
@Override
@Metric({"NumOfBlocksUnderReplicated", "Number of blocks under replication"})
public long getNumOfBlocksUnderReplicated() {
return getNameserviceAggregatedLong(
MembershipStats::getNumOfBlocksUnderReplicated);
}
@Override
@Metric({"NumOfBlocksPendingDeletion", "Number of blocks pending deletion"})
public long getNumOfBlocksPendingDeletion() {
return getNameserviceAggregatedLong(
MembershipStats::getNumOfBlocksPendingDeletion);
}
@Override
@Metric({"NumFiles", "Number of files"})
public long getNumFiles() {
return getNameserviceAggregatedLong(MembershipStats::getNumOfFiles);
}
@Override
public String getRouterStarted() {
long startTime = this.router.getStartTime();
return new Date(startTime).toString();
}
@Override
public String getVersion() {
return VersionInfo.getVersion() + ", r" + VersionInfo.getRevision();
}
@Override
public String getCompiledDate() {
return VersionInfo.getDate();
}
@Override
public String getCompileInfo() {
return VersionInfo.getDate() + " by " + VersionInfo.getUser() + " from "
+ VersionInfo.getBranch();
}
@Override
public String getHostAndPort() {
InetSocketAddress address = this.router.getRpcServerAddress();
if (address != null) {
try {
String hostname = InetAddress.getLocalHost().getHostName();
int port = address.getPort();
return hostname + ":" + port;
} catch (UnknownHostException ignored) { }
}
return "Unknown";
}
@Override
public String getRouterId() {
return this.router.getRouterId();
}
@Override
public String getClusterId() {
try {
Collection<String> clusterIds =
getNamespaceInfo(FederationNamespaceInfo::getClusterId);
return clusterIds.toString();
} catch (IOException e) {
LOG.error("Cannot fetch cluster ID metrics: {}", e.getMessage());
return "";
}
}
@Override
public String getBlockPoolId() {
try {
Collection<String> blockpoolIds =
getNamespaceInfo(FederationNamespaceInfo::getBlockPoolId);
return blockpoolIds.toString();
} catch (IOException e) {
LOG.error("Cannot fetch block pool ID metrics: {}", e.getMessage());
return "";
}
}
@Override
public String getRouterStatus() {
return this.router.getRouterState().toString();
}
@Override
@Metric({"CurrentTokensCount", "Number of router's current tokens"})
public long getCurrentTokensCount() {
RouterSecurityManager mgr =
this.router.getRpcServer().getRouterSecurityManager();
if (mgr != null && mgr.getSecretManager() != null) {
return mgr.getSecretManager().getCurrentTokensSize();
}
return -1;
}
@Override
public String getTopTokenRealOwners() {
RouterSecurityManager mgr =
this.router.getRpcServer().getRouterSecurityManager();
if (mgr != null && mgr.getSecretManager() != null) {
return JSON.toString(mgr.getSecretManager()
.getTopTokenRealOwners(this.topTokenRealOwners));
}
return "";
}
@Override
public boolean isSecurityEnabled() {
return UserGroupInformation.isSecurityEnabled();
}
@Override
public int getCorruptFilesCount() {
return getNameserviceAggregatedInt(MembershipStats::getCorruptFilesCount);
}
@Override
public long getScheduledReplicationBlocks() {
return getNameserviceAggregatedLong(
MembershipStats::getScheduledReplicationBlocks);
}
@Override
public long getNumberOfMissingBlocksWithReplicationFactorOne() {
return getNameserviceAggregatedLong(
MembershipStats::getNumberOfMissingBlocksWithReplicationFactorOne);
}
@Override
public long getHighestPriorityLowRedundancyReplicatedBlocks() {
return getNameserviceAggregatedLong(
MembershipStats::getHighestPriorityLowRedundancyReplicatedBlocks);
}
@Override
public long getHighestPriorityLowRedundancyECBlocks() {
return getNameserviceAggregatedLong(
MembershipStats::getHighestPriorityLowRedundancyECBlocks);
}
@Override
public int getPendingSPSPaths() {
return getNameserviceAggregatedInt(
MembershipStats::getPendingSPSPaths);
}
@Override
@Metric({"RouterFederationRenameCount", "Number of federation rename"})
public int getRouterFederationRenameCount() {
return this.router.getRpcServer().getRouterFederationRenameCount();
}
@Override
@Metric({"SchedulerJobCount", "Number of scheduler job"})
public int getSchedulerJobCount() {
return this.router.getRpcServer().getSchedulerJobCount();
}
@Override
public String getSafemode() {
if (this.router.isRouterState(RouterServiceState.SAFEMODE)) {
return "Safe mode is ON. " + this.getSafeModeTip();
} else {
return "";
}
}
private String getSafeModeTip() {
String cmd = "Use \"hdfs dfsrouteradmin -safemode leave\" "
+ "to turn safe mode off.";
if (this.router.isRouterState(RouterServiceState.INITIALIZING)
|| this.router.isRouterState(RouterServiceState.UNINITIALIZED)) {
return "Router is in" + this.router.getRouterState()
+ "mode, the router will immediately return to "
+ "normal mode after some time. " + cmd;
} else if (this.router.isRouterState(RouterServiceState.SAFEMODE)) {
return "It was turned on manually. " + cmd;
}
return "";
}
/**
* Build a set of unique values found in all namespaces.
*
* @param f Method reference of the appropriate FederationNamespaceInfo
* getter function
* @return Set of unique string values found in all discovered namespaces.
* @throws IOException if the query could not be executed.
*/
private Collection<String> getNamespaceInfo(
Function<FederationNamespaceInfo, String> f) throws IOException {
if (membershipStore == null) {
return new HashSet<>();
}
GetNamespaceInfoRequest request = GetNamespaceInfoRequest.newInstance();
GetNamespaceInfoResponse response =
membershipStore.getNamespaceInfo(request);
return response.getNamespaceInfo().stream()
.map(f)
.collect(Collectors.toSet());
}
/**
* Get the aggregated value for a method for all nameservices.
* @param f Method reference
* @return Aggregated integer.
*/
private int getNameserviceAggregatedInt(ToIntFunction<MembershipStats> f) {
try {
return getActiveNamenodeRegistrations().stream()
.map(MembershipState::getStats)
.collect(Collectors.summingInt(f));
} catch (IOException e) {
LOG.error("Unable to extract metrics: {}", e.getMessage());
return 0;
}
}
/**
* Get the aggregated value for a method for all nameservices.
* @param f Method reference
* @return Aggregated long.
*/
private long getNameserviceAggregatedLong(ToLongFunction<MembershipStats> f) {
try {
return getActiveNamenodeRegistrations().stream()
.map(MembershipState::getStats)
.collect(Collectors.summingLong(f));
} catch (IOException e) {
LOG.error("Unable to extract metrics: {}", e.getMessage());
return 0;
}
}
private BigInteger getNameserviceAggregatedBigInt(
ToLongFunction<MembershipStats> f) {
try {
List<MembershipState> states = getActiveNamenodeRegistrations();
BigInteger sum = BigInteger.valueOf(0);
for (MembershipState state : states) {
long lvalue = f.applyAsLong(state.getStats());
sum = sum.add(BigInteger.valueOf(lvalue));
}
return sum;
} catch (IOException e) {
LOG.error("Unable to extract metrics: {}", e.getMessage());
return new BigInteger("0");
}
}
/**
* Fetches the most active namenode memberships for all known nameservices.
* The fetched membership may not or may not be active. Excludes expired
* memberships.
* @throws IOException if the query could not be performed.
* @return List of the most active NNs from each known nameservice.
*/
private List<MembershipState> getActiveNamenodeRegistrations()
throws IOException {
List<MembershipState> resultList = new ArrayList<>();
if (membershipStore == null) {
return resultList;
}
GetNamespaceInfoRequest request = GetNamespaceInfoRequest.newInstance();
GetNamespaceInfoResponse response =
membershipStore.getNamespaceInfo(request);
for (FederationNamespaceInfo nsInfo : response.getNamespaceInfo()) {
// Fetch the most recent namenode registration
String nsId = nsInfo.getNameserviceId();
List<? extends FederationNamenodeContext> nns =
namenodeResolver.getNamenodesForNameserviceId(nsId, false);
if (nns != null) {
FederationNamenodeContext nn = nns.get(0);
if (nn instanceof MembershipState) {
resultList.add((MembershipState) nn);
}
}
}
return resultList;
}
/**
* Get time as a date string.
* @param time Seconds since 1970.
* @return String representing the date.
*/
@VisibleForTesting
static String getDateString(long time) {
if (time <= 0) {
return "-";
}
Date date = new Date(time);
SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT);
return sdf.format(date);
}
/**
* Get the number of seconds passed since a date.
*
* @param timeMs to use as a reference.
* @return Seconds since the date.
*/
private static long getSecondsSince(long timeMs) {
if (timeMs < 0) {
return -1;
}
return (now() - timeMs) / 1000;
}
/**
* Get JSON for this record.
*
* @return Map representing the data for the JSON representation.
*/
private static Map<String, Object> getJson(BaseRecord record) {
Map<String, Object> json = new HashMap<>();
Map<String, Class<?>> fields = getFields(record);
for (String fieldName : fields.keySet()) {
if (!fieldName.equalsIgnoreCase("proto")) {
try {
Object value = getField(record, fieldName);
if (value instanceof BaseRecord) {
BaseRecord recordField = (BaseRecord) value;
json.putAll(getJson(recordField));
} else {
json.put(fieldName, value == null ? JSONObject.NULL : value);
}
} catch (Exception e) {
throw new IllegalArgumentException(
"Cannot serialize field " + fieldName + " into JSON");
}
}
}
return json;
}
/**
* Returns all serializable fields in the object.
*
* @return Map with the fields.
*/
private static Map<String, Class<?>> getFields(BaseRecord record) {
Map<String, Class<?>> getters = new HashMap<>();
for (Method m : record.getClass().getDeclaredMethods()) {
if (m.getName().startsWith("get")) {
try {
Class<?> type = m.getReturnType();
char[] c = m.getName().substring(3).toCharArray();
c[0] = Character.toLowerCase(c[0]);
String key = new String(c);
getters.put(key, type);
} catch (Exception e) {
LOG.error("Cannot execute getter {} on {}", m.getName(), record);
}
}
}
return getters;
}
/**
* Fetches the value for a field name.
*
* @param fieldName the legacy name of the field.
* @return The field data or null if not found.
*/
private static Object getField(BaseRecord record, String fieldName) {
Object result = null;
Method m = locateGetter(record, fieldName);
if (m != null) {
try {
result = m.invoke(record);
} catch (Exception e) {
LOG.error("Cannot get field {} on {}", fieldName, record);
}
}
return result;
}
/**
* Finds the appropriate getter for a field name.
*
* @param fieldName The legacy name of the field.
* @return The matching getter or null if not found.
*/
private static Method locateGetter(BaseRecord record, String fieldName) {
for (Method m : record.getClass().getMethods()) {
if (m.getName().equalsIgnoreCase("get" + fieldName)) {
return m;
}
}
return null;
}
}
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