package org.infinispan.xsite;
import org.infinispan.Cache;
import org.infinispan.factories.annotations.Inject;
import org.infinispan.jmx.annotations.MBean;
import org.infinispan.jmx.annotations.ManagedOperation;
import org.infinispan.jmx.annotations.Parameter;
import org.infinispan.remoting.responses.CacheNotFoundResponse;
import org.infinispan.remoting.responses.Response;
import org.infinispan.remoting.responses.SuccessfulResponse;
import org.infinispan.remoting.rpc.ResponseMode;
import org.infinispan.remoting.rpc.RpcManager;
import org.infinispan.remoting.transport.Address;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
import org.infinispan.xsite.statetransfer.XSiteStateTransferManager;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Managed bean exposing sys admin operations for Cross-Site replication functionality.
*
* @author Mircea Markus
* @since 5.2
*/
@MBean(objectName = "XSiteAdmin", description = "Exposes tooling for handling backing up data to remote sites.")
public class XSiteAdminOperations {
public static final String ONLINE = "online";
public static final String OFFLINE = "offline";
public static final String SUCCESS = "ok";
private static Log log = LogFactory.getLog(XSiteAdminOperations.class);
private RpcManager rpcManager;
private Cache cache;
private volatile BackupSender backupSender;
private XSiteStateTransferManager stateTransferManager;
@Inject
public void init(RpcManager rpcManager, BackupSender backupSender, Cache cache,
XSiteStateTransferManager stateTransferManager) {
this.backupSender = backupSender;
this.rpcManager = rpcManager;
this.backupSender = backupSender;
this.cache = cache;
this.stateTransferManager = stateTransferManager;
}
@ManagedOperation(description = "Check whether the given backup site is offline or not.", displayName = "Check whether the given backup site is offline or not.")
public String siteStatus(@Parameter(name = "site", description = "The name of the backup site") String site) {
//also consider local node
OfflineStatus offlineStatus = backupSender.getOfflineStatus(site);
if (offlineStatus == null)
return "Incorrect site name: " + site;
log.tracef("This node's status is %s", offlineStatus);
XSiteAdminCommand command = new XSiteAdminCommand(cache.getName(), site, XSiteAdminCommand.AdminOperation.SITE_STATUS, null, null);
Map<Address, Response> responses = invokeRemotely(command);
List<Address> online = new ArrayList<Address>(responses.size());
List<Address> offline = new ArrayList<Address>(responses.size());
List<Address> failed = new ArrayList<Address>(responses.size());
for (Map.Entry<Address, Response> e : responses.entrySet()) {
if (!e.getValue().isSuccessful() || !e.getValue().isValid()) {
if (e.getValue() != CacheNotFoundResponse.INSTANCE) {
//the node can be shutting down.
failed.add(e.getKey());
}
continue;
}
SuccessfulResponse response = (SuccessfulResponse) e.getValue();
log.tracef("Got status %s from node %s", response.getResponseValue(), e.getKey());
if (response.getResponseValue() == XSiteAdminCommand.Status.OFFLINE) {
offline.add(e.getKey());
} else if (response.getResponseValue() == XSiteAdminCommand.Status.ONLINE) {
online.add(e.getKey());
} else {
throw new IllegalStateException("Unknown response: " + response.getResponseValue());
}
}
if (!failed.isEmpty()) {
return rpcError(failed, "Could not query nodes ");
}
if (offlineStatus.isOffline()) {
offline.add(rpcManager.getAddress());
} else {
online.add(rpcManager.getAddress());
}
if (offline.isEmpty()) {
return ONLINE;
}
if (online.isEmpty()) {
return OFFLINE;
}
return "Site appears online on nodes:" + online + " and offline on nodes: " + offline;
}
@ManagedOperation(description = "Returns the the status(offline/online) of all the configured backup sites.", displayName = "Returns the the status(offline/online) of all the configured backup sites.")
public String status() {
//also consider local node
Map<String, Boolean> localNodeStatus = backupSender.status();
XSiteAdminCommand command = new XSiteAdminCommand(cache.getName(), null, XSiteAdminCommand.AdminOperation.STATUS, null, null);
Map<Address, Response> responses = invokeRemotely(command);
List<Address> errors = checkForErrors(responses);
if (!errors.isEmpty()) {
return rpcError(errors, "Failure invoking 'status()' on nodes: ");
}
//<site name, nodes where it failed>
Map<String, List<Address>> result = new HashMap<String, List<Address>>();
for (Map.Entry<String, Boolean> e : localNodeStatus.entrySet()) {
ArrayList<Address> failedSites = new ArrayList<Address>();
result.put(e.getKey(), failedSites);
if (!e.getValue()) {
failedSites.add(rpcManager.getAddress());
}
}
for (Map.Entry<Address, Response> response : responses.entrySet()) {
@SuppressWarnings("unchecked")
Map<String, Boolean> status = (Map<String, Boolean>) ((SuccessfulResponse) response.getValue()).getResponseValue();
for (Map.Entry<String, Boolean> entry : status.entrySet()) {
List<Address> addresses = result.get(entry.getKey());
if (addresses == null)
throw new IllegalStateException("All sites must be defined on all the nodes of the cluster!");
if (!entry.getValue()) {
addresses.add(rpcManager.getAddress());
}
}
}
int clusterSize = rpcManager.getTransport().getMembers().size();
StringBuilder resultStr = new StringBuilder();
//now generate the final response
boolean first = true;
for (Map.Entry<String, List<Address>> e : result.entrySet()) {
if (!first) {
resultStr.append("\n");
} else first = false;
resultStr.append(e.getKey()).append("[");
List<Address> value = e.getValue();
if (value.isEmpty()) {
resultStr.append("ONLINE");
} else if (value.size() == clusterSize) {
resultStr.append("OFFLINE");
} else {
resultStr.append("MIXED, offline on nodes: ").append(value);
}
resultStr.append("]");
}
return resultStr.toString();
}
@ManagedOperation(description = "Takes this site offline in all nodes in the cluster.", displayName = "Takes this site offline in all nodes in the cluster.")
public String takeSiteOffline(@Parameter(name = "site", description = "The name of the backup site") String site) {
OfflineStatus offlineStatus = backupSender.getOfflineStatus(site);
if (offlineStatus == null)
return incorrectSiteName(site);
backupSender.takeSiteOffline(site);
log.tracef("Is site offline in node %s? %s", rpcManager.getAddress(), offlineStatus.isOffline());
XSiteAdminCommand command = new XSiteAdminCommand(cache.getName(), site, XSiteAdminCommand.AdminOperation.TAKE_OFFLINE, null, null);
Map<Address, Response> responses = invokeRemotely(command);
List<Address> failed = checkForErrors(responses);
String prefix = "Could not take the site offline on nodes:";
return returnFailureOrSuccess(failed, prefix);
}
@ManagedOperation(description = "Amends the values for 'afterFailures' for the 'TakeOffline' functionality on all the nodes in the cluster.", displayName = "Amends the values for 'TakeOffline.afterFailures' on all the nodes in the cluster.")
public String setTakeOfflineAfterFailures(
@Parameter(name = "site", description = "The name of the backup site") String site,
@Parameter(name = "afterFailures", description = "The number of failures after which the site will be taken offline",
type = "integer") int afterFailures) {
return takeOffline(site, afterFailures, null);
}
@ManagedOperation(description = "Amends the values for 'minTimeToWait' for the 'TakeOffline' functionality on all the nodes in the cluster.", displayName = "Amends the values for 'TakeOffline.minTimeToWait' on all the nodes in the cluster.")
public String setTakeOfflineMinTimeToWait(
@Parameter(name = "site", description = "The name of the backup site") String site,
@Parameter(name = "minTimeToWait", description = "The minimum amount of time in milliseconds to wait before taking a site offline", type = "long") long minTimeToWait) {
return takeOffline(site, null, minTimeToWait);
}
@ManagedOperation(description = "Amends the values for 'TakeOffline' functionality on all the nodes in the cluster.", displayName = "Amends the values for 'TakeOffline' functionality on all the nodes in the cluster.")
public String amendTakeOffline(
@Parameter(name = "site", description = "The name of the backup site") String site,
@Parameter(name = "afterFailures", description = "The number of failures after which the site will be taken offline", type = "integer") int afterFailures,
@Parameter(name = "minTimeToWait", description = "The minimum amount of time in milliseconds to wait before taking a site offline", type = "long") long minTimeToWait) {
return takeOffline(site, afterFailures, minTimeToWait);
}
@ManagedOperation(description = "Returns the value of the 'minTimeToWait' for the 'TakeOffline' functionality.", displayName = "Returns the value of the 'minTimeToWait' for the 'TakeOffline' functionality.")
public String getTakeOfflineMinTimeToWait(@Parameter(name = "site", description = "The name of the backup site") String site) {
OfflineStatus offlineStatus = backupSender.getOfflineStatus(site);
if (offlineStatus == null) return incorrectSiteName(site);
return String.valueOf(offlineStatus.getTakeOffline().minTimeToWait());
}
@ManagedOperation(description = "Returns the value of the 'afterFailures' for the 'TakeOffline' functionality.", displayName = "Returns the value of the 'afterFailures' for the 'TakeOffline' functionality.")
public String getTakeOfflineAfterFailures(@Parameter(name = "site", description = "The name of the backup site") String site) {
OfflineStatus offlineStatus = backupSender.getOfflineStatus(site);
if (offlineStatus == null) return incorrectSiteName(site);
return String.valueOf(offlineStatus.getTakeOffline().afterFailures());
}
@ManagedOperation(description = "Brings the given site back online on all the cluster.", displayName = "Brings the given site back online on all the cluster.")
public String bringSiteOnline(@Parameter(name = "site", description = "The name of the backup site") String site) {
OfflineStatus offlineStatus = backupSender.getOfflineStatus(site);
if (offlineStatus == null)
return "Incorrect site name: " + site;
backupSender.bringSiteOnline(site);
XSiteAdminCommand command = new XSiteAdminCommand(cache.getName(), site, XSiteAdminCommand.AdminOperation.BRING_ONLINE, null, null);
Map<Address, Response> responses = invokeRemotely(command);
List<Address> failed = checkForErrors(responses);
return returnFailureOrSuccess(failed, "Could not take the site online on nodes:");
}
@ManagedOperation(displayName = "Push state to site",
description = "Pushes the state of this cache to the remote site. " +
"The remote site will be bring back online",
name = "pushState")
public final String pushState(@Parameter(description = "The destination site name", name = "SiteName") String siteName) {
String status = bringSiteOnline(siteName);
if (!SUCCESS.equals(status)) {
return String.format("Unable to pushState to '%s'. %s", siteName, status);
}
try {
stateTransferManager.startPushState(siteName);
} catch (Throwable throwable) {
log.debugf(throwable, "Unable to pushState to '%s'.", siteName);
return String.format("Unable to pushState to '%s'. %s", siteName, throwable.getLocalizedMessage());
}
return SUCCESS;
}
/**
* for debug only!
*/
public final List<String> getRunningStateTransfer() {
return stateTransferManager.getRunningStateTransfers();
}
@ManagedOperation(displayName = "Push State Status",
description = "Shows a map with destination site name and the state transfer status.",
name = "PushStateStatus")
public final Map<String, String> getPushStateStatus() {
Map<String, String> map = new HashMap<String, String>();
try {
for (String siteName : getRunningStateTransfer()) {
map.put(siteName, "SENDING");
}
map.putAll(stateTransferManager.getClusterStatus());
return map;
} catch (Exception e) {
return Collections.singletonMap("ERROR", e.getLocalizedMessage());
}
}
@ManagedOperation(displayName = "Clear State Status",
description = "Clears the state transfer status.",
name = "ClearPushStateStatus")
public final String clearPushStateStatus() {
return performOperation(new Operation() {
@Override
public void execute() throws Throwable {
stateTransferManager.clearClusterStatus();
}
});
}
@ManagedOperation(displayName = "Cancel Push Status",
description = "Cancels the push state to remote site.",
name = "CancelPushState")
public final String cancelPushState(@Parameter(description = "The destination site name", name = "SiteName")
final String siteName) {
return performOperation(new Operation() {
@Override
public void execute() throws Throwable {
stateTransferManager.cancelPushState(siteName);
}
});
}
@ManagedOperation(displayName = "Cancel Receive State",
description = "Cancels the push state to this site. All the state received from state transfer " +
"will be ignored.",
name = "CancelReceiveState")
public final String cancelReceiveState(@Parameter(description = "The sending site name", name = "SiteName")
final String siteName) {
return performOperation(new Operation() {
@Override
public void execute() throws Throwable {
stateTransferManager.cancelReceive(siteName);
}
});
}
@ManagedOperation(displayName = "Sending Site Name",
description = "Returns the site name from which this site is receiving state.",
name = "SendingSiteName")
public final String getSendingSiteName() {
return stateTransferManager.getSendingSiteName();
}
private static String performOperation(Operation operation) {
try {
operation.execute();
} catch (Throwable t) {
return String.format("Unable to perform operation. Error=%s", t.getLocalizedMessage());
}
return SUCCESS;
}
private List<Address> checkForErrors(Map<Address, Response> responses) {
List<Address> failed = new ArrayList<Address>(responses.size());
for (Map.Entry<Address, Response> e : responses.entrySet()) {
if (e.getValue() != CacheNotFoundResponse.INSTANCE &&
(e.getValue() == null || !e.getValue().isSuccessful() || !e.getValue().isValid())) {
failed.add(e.getKey());
}
}
return failed;
}
private String takeOffline(String site, Integer afterFailures, Long minTimeToWait) {
OfflineStatus offlineStatus = backupSender.getOfflineStatus(site);
if (offlineStatus == null)
return incorrectSiteName(site);
XSiteAdminCommand command = new XSiteAdminCommand(cache.getName(), site, XSiteAdminCommand.AdminOperation.AMEND_TAKE_OFFLINE,
afterFailures, minTimeToWait);
Map<Address, Response> responses = invokeRemotely(command);
//also amend locally
offlineStatus.amend(afterFailures, minTimeToWait);
List<Address> failed = checkForErrors(responses);
return returnFailureOrSuccess(failed, "Could not amend for nodes:");
}
private String returnFailureOrSuccess(List<Address> failed, String prefix) {
if (!failed.isEmpty()) {
return rpcError(failed, prefix);
}
return SUCCESS;
}
private String rpcError(List<Address> failed, String prefix) {
return prefix + failed.toString();
}
private String incorrectSiteName(String site) {
return "Incorrect site name: " + site;
}
private Map<Address, Response> invokeRemotely(XSiteAdminCommand command) {
return rpcManager.invokeRemotely(null, command,
rpcManager.getRpcOptionsBuilder(ResponseMode.SYNCHRONOUS_IGNORE_LEAVERS, false).build());
}
private static interface Operation {
void execute() throws Throwable;
}
}