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SessionHelper.java
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SessionHelper.java
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/*
* Copyright 1999-2019 Seata.io Group.
*
* 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 io.seata.server.session;
import java.util.Collection;
import java.util.List;
import java.util.Objects;
import io.seata.common.util.CollectionUtils;
import io.seata.common.util.StringUtils;
import io.seata.config.Configuration;
import io.seata.config.ConfigurationFactory;
import io.seata.core.constants.ConfigurationKeys;
import io.seata.core.context.RootContext;
import io.seata.core.exception.TransactionException;
import io.seata.core.model.BranchType;
import io.seata.core.model.GlobalStatus;
import io.seata.core.store.StoreMode;
import io.seata.metrics.IdConstants;
import io.seata.server.UUIDGenerator;
import io.seata.server.coordinator.DefaultCoordinator;
import io.seata.server.metrics.MetricsPublisher;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
/**
* The type Session helper.
*
* @author sharajava
*/
public class SessionHelper {
private static final Logger LOGGER = LoggerFactory.getLogger(SessionHelper.class);
/**
* The constant CONFIG.
*/
private static final Configuration CONFIG = ConfigurationFactory.getInstance();
private static final Boolean ENABLE_BRANCH_ASYNC_REMOVE = CONFIG.getBoolean(
ConfigurationKeys.ENABLE_BRANCH_ASYNC_REMOVE, false);
/**
* The instance of DefaultCoordinator
*/
private static final DefaultCoordinator COORDINATOR = DefaultCoordinator.getInstance();
private static final boolean DELAY_HANDLE_SESSION =
!StringUtils.equalsIgnoreCase(ConfigurationFactory.getInstance().getConfig(ConfigurationKeys.STORE_SESSION_MODE,
ConfigurationFactory.getInstance().getConfig(ConfigurationKeys.STORE_MODE)), StoreMode.FILE.getName());
private SessionHelper() {
}
public static BranchSession newBranchByGlobal(GlobalSession globalSession, BranchType branchType, String resourceId, String lockKeys, String clientId) {
return newBranchByGlobal(globalSession, branchType, resourceId, null, lockKeys, clientId);
}
/**
* New branch by global branch session.
*
* @param globalSession the global session
* @param branchType the branch type
* @param resourceId the resource id
* @param lockKeys the lock keys
* @param clientId the client id
* @return the branch session
*/
public static BranchSession newBranchByGlobal(GlobalSession globalSession, BranchType branchType, String resourceId,
String applicationData, String lockKeys, String clientId) {
BranchSession branchSession = new BranchSession();
branchSession.setXid(globalSession.getXid());
branchSession.setTransactionId(globalSession.getTransactionId());
branchSession.setBranchId(UUIDGenerator.generateUUID());
branchSession.setBranchType(branchType);
branchSession.setResourceId(resourceId);
branchSession.setLockKey(lockKeys);
branchSession.setClientId(clientId);
branchSession.setApplicationData(applicationData);
return branchSession;
}
/**
* New branch
*
* @param branchType the branch type
* @param xid Transaction id.
* @param branchId Branch id.
* @param resourceId Resource id.
* @param applicationData Application data bind with this branch.
* @return the branch session
*/
public static BranchSession newBranch(BranchType branchType, String xid, long branchId, String resourceId, String applicationData) {
BranchSession branchSession = new BranchSession();
branchSession.setXid(xid);
branchSession.setBranchId(branchId);
branchSession.setBranchType(branchType);
branchSession.setResourceId(resourceId);
branchSession.setApplicationData(applicationData);
return branchSession;
}
/**
* End committed.
*
* @param globalSession the global session
* @param retryGlobal the retry global
* @throws TransactionException the transaction exception
*/
public static void endCommitted(GlobalSession globalSession, boolean retryGlobal) throws TransactionException {
if (retryGlobal || !DELAY_HANDLE_SESSION) {
long beginTime = System.currentTimeMillis();
boolean retryBranch = globalSession.getStatus() == GlobalStatus.CommitRetrying;
globalSession.changeGlobalStatus(GlobalStatus.Committed);
globalSession.end();
if (!DELAY_HANDLE_SESSION) {
MetricsPublisher.postSessionDoneEvent(globalSession, false, false);
}
MetricsPublisher.postSessionDoneEvent(globalSession, IdConstants.STATUS_VALUE_AFTER_COMMITTED_KEY, true,
beginTime, retryBranch);
} else {
MetricsPublisher.postSessionDoneEvent(globalSession, false, false);
}
}
/**
* End commit failed.
*
* @param globalSession the global session
* @param retryGlobal the retry global
* @throws TransactionException the transaction exception
*/
public static void endCommitFailed(GlobalSession globalSession, boolean retryGlobal) throws TransactionException {
globalSession.changeGlobalStatus(GlobalStatus.CommitFailed);
LOGGER.error("The Global session {} has changed the status to {}, need to be handled it manually.",
globalSession.getXid(), globalSession.getStatus());
globalSession.end();
MetricsPublisher.postSessionDoneEvent(globalSession, retryGlobal, false);
}
/**
* End rollbacked.
*
* @param globalSession the global session
* @param retryGlobal the retry global
* @throws TransactionException the transaction exception
*/
public static void endRollbacked(GlobalSession globalSession, boolean retryGlobal) throws TransactionException {
if (retryGlobal || !DELAY_HANDLE_SESSION) {
long beginTime = System.currentTimeMillis();
GlobalStatus currentStatus = globalSession.getStatus();
boolean retryBranch =
currentStatus == GlobalStatus.TimeoutRollbackRetrying || currentStatus == GlobalStatus.RollbackRetrying;
if (SessionStatusValidator.isTimeoutGlobalStatus(currentStatus)) {
globalSession.changeGlobalStatus(GlobalStatus.TimeoutRollbacked);
} else {
globalSession.changeGlobalStatus(GlobalStatus.Rollbacked);
}
globalSession.end();
if (!DELAY_HANDLE_SESSION) {
MetricsPublisher.postSessionDoneEvent(globalSession, false, false);
}
MetricsPublisher.postSessionDoneEvent(globalSession, IdConstants.STATUS_VALUE_AFTER_ROLLBACKED_KEY, true,
beginTime, retryBranch);
} else {
if (SessionStatusValidator.isTimeoutGlobalStatus(globalSession.getStatus())) {
globalSession.changeGlobalStatus(GlobalStatus.Rollbacking);
MetricsPublisher.postSessionDoneEvent(globalSession, GlobalStatus.TimeoutRollbacked, false, false);
} else {
MetricsPublisher.postSessionDoneEvent(globalSession, GlobalStatus.Rollbacked, false, false);
}
}
}
/**
* End rollback failed.
*
* @param globalSession the global session
* @param retryGlobal the retry global
* @throws TransactionException the transaction exception
*/
public static void endRollbackFailed(GlobalSession globalSession, boolean retryGlobal) throws TransactionException {
GlobalStatus currentStatus = globalSession.getStatus();
if (SessionStatusValidator.isTimeoutGlobalStatus(currentStatus)) {
globalSession.changeGlobalStatus(GlobalStatus.TimeoutRollbackFailed);
} else {
globalSession.changeGlobalStatus(GlobalStatus.RollbackFailed);
}
LOGGER.error("The Global session {} has changed the status to {}, need to be handled it manually.", globalSession.getXid(), globalSession.getStatus());
globalSession.end();
MetricsPublisher.postSessionDoneEvent(globalSession, retryGlobal, false);
}
/**
* Foreach global sessions.
*
* @param sessions the global sessions
* @param handler the handler
* @since 1.5.0
*/
public static void forEach(Collection<GlobalSession> sessions, GlobalSessionHandler handler) {
if (CollectionUtils.isEmpty(sessions)) {
return;
}
sessions.parallelStream().forEach(globalSession -> {
try {
MDC.put(RootContext.MDC_KEY_XID, globalSession.getXid());
handler.handle(globalSession);
} catch (Throwable th) {
LOGGER.error("handle global session failed: {}", globalSession.getXid(), th);
} finally {
MDC.remove(RootContext.MDC_KEY_XID);
}
});
}
/**
* Foreach branch sessions.
*
* @param sessions the branch session
* @param handler the handler
* @since 1.5.0
*/
public static Boolean forEach(Collection<BranchSession> sessions, BranchSessionHandler handler) throws TransactionException {
Boolean result;
for (BranchSession branchSession : sessions) {
try {
MDC.put(RootContext.MDC_KEY_BRANCH_ID, String.valueOf(branchSession.getBranchId()));
result = handler.handle(branchSession);
if (result == null) {
continue;
}
return result;
} finally {
MDC.remove(RootContext.MDC_KEY_BRANCH_ID);
}
}
return null;
}
/**
* remove branchSession from globalSession
* @param globalSession the globalSession
* @param branchSession the branchSession
* @param isAsync if asynchronous remove
*/
public static void removeBranch(GlobalSession globalSession, BranchSession branchSession, boolean isAsync)
throws TransactionException {
if (Objects.equals(Boolean.TRUE, ENABLE_BRANCH_ASYNC_REMOVE) && isAsync) {
COORDINATOR.doBranchRemoveAsync(globalSession, branchSession);
} else {
globalSession.removeBranch(branchSession);
}
}
/**
* remove branchSession from globalSession
* @param globalSession the globalSession
* @param isAsync if asynchronous remove
*/
public static void removeAllBranch(GlobalSession globalSession, boolean isAsync)
throws TransactionException {
List<BranchSession> branchSessions = globalSession.getSortedBranches();
if (branchSessions == null || branchSessions.isEmpty()) {
return;
}
if (Objects.equals(Boolean.TRUE, ENABLE_BRANCH_ASYNC_REMOVE) && isAsync) {
COORDINATOR.doBranchRemoveAllAsync(globalSession);
} else {
for (BranchSession branchSession : branchSessions) {
globalSession.removeBranch(branchSession);
}
}
}
}