/*
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* Copyright 1999-2019 Seata.io Group.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package io.seata.server.transaction.at;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import io.seata.common.exception.StoreException;
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import io.seata.common.util.StringUtils;
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import io.seata.core.exception.BranchTransactionException;
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import io.seata.core.exception.TransactionException;
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import io.seata.core.model.BranchType;
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import io.seata.core.rpc.RemotingServer;
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import io.seata.server.coordinator.AbstractCore;
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import io.seata.server.session.BranchSession;
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import io.seata.server.session.GlobalSession;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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import static io.seata.common.Constants.AUTO_COMMIT;
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import static io.seata.common.Constants.SKIP_CHECK_LOCK;
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import static io.seata.core.exception.TransactionExceptionCode.LockKeyConflict;
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/**
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* The type at core.
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*
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* @author ph3636
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*/
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public class ATCore extends AbstractCore {
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private final ObjectMapper objectMapper = new ObjectMapper();
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public ATCore(RemotingServer remotingServer) {
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super(remotingServer);
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}
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@Override
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public BranchType getHandleBranchType() {
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return BranchType.AT;
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}
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@Override
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protected void branchSessionLock(GlobalSession globalSession, BranchSession branchSession)
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throws TransactionException {
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String applicationData = branchSession.getApplicationData();
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boolean autoCommit = true;
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boolean skipCheckLock = false;
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if (StringUtils.isNotBlank(applicationData)) {
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try {
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Map<String, Object> data = objectMapper.readValue(applicationData, HashMap.class);
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Object clientAutoCommit = data.get(AUTO_COMMIT);
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if (clientAutoCommit != null && !(boolean)clientAutoCommit) {
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autoCommit = (boolean)clientAutoCommit;
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}
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Object clientSkipCheckLock = data.get(SKIP_CHECK_LOCK);
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if (clientSkipCheckLock instanceof Boolean) {
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skipCheckLock = (boolean)clientSkipCheckLock;
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}
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} catch (IOException e) {
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LOGGER.error("failed to get application data: {}", e.getMessage(), e);
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}
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}
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try {
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if (!branchSession.lock(autoCommit, skipCheckLock)) {
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throw new BranchTransactionException(LockKeyConflict,
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String.format("Global lock acquire failed xid = %s branchId = %s", globalSession.getXid(),
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branchSession.getBranchId()));
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}
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} catch (StoreException e) {
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Throwable cause = e.getCause();
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if (cause instanceof BranchTransactionException) {
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throw new BranchTransactionException(((BranchTransactionException)cause).getCode(),
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String.format("Global lock acquire failed xid = %s branchId = %s", globalSession.getXid(),
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branchSession.getBranchId()));
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}
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throw e;
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}
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}
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@Override
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protected void branchSessionUnlock(BranchSession branchSession) throws TransactionException {
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branchSession.unlock();
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}
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@Override
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public boolean lockQuery(BranchType branchType, String resourceId, String xid, String lockKeys)
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throws TransactionException {
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return lockManager.isLockable(xid, resourceId, lockKeys);
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}
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}
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