/*
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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.storage.db.lock;
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import io.seata.common.exception.DataAccessException;
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import io.seata.common.exception.StoreException;
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import io.seata.common.util.CollectionUtils;
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import io.seata.core.lock.AbstractLocker;
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import io.seata.core.lock.RowLock;
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import io.seata.core.model.LockStatus;
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import io.seata.core.store.LockStore;
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import javax.sql.DataSource;
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import java.util.List;
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/**
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* The type Data base locker.
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*
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* @author zhangsen
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*/
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public class DataBaseLocker extends AbstractLocker {
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private LockStore lockStore;
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/**
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* Instantiates a new Data base locker.
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*/
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public DataBaseLocker() {
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}
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/**
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* Instantiates a new Data base locker.
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*
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* @param logStoreDataSource the log store data source
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*/
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public DataBaseLocker(DataSource logStoreDataSource) {
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lockStore = new LockStoreDataBaseDAO(logStoreDataSource);
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}
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@Override
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public boolean acquireLock(List<RowLock> locks) {
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return acquireLock(locks, true, false);
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}
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@Override
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public boolean acquireLock(List<RowLock> locks, boolean autoCommit, boolean skipCheckLock) {
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if (CollectionUtils.isEmpty(locks)) {
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// no lock
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return true;
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}
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try {
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return lockStore.acquireLock(convertToLockDO(locks), autoCommit, skipCheckLock);
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} catch (StoreException e) {
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throw e;
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} catch (Exception t) {
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LOGGER.error("AcquireLock error, locks:{}", CollectionUtils.toString(locks), t);
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return false;
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}
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}
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@Override
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public boolean releaseLock(List<RowLock> locks) {
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if (CollectionUtils.isEmpty(locks)) {
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// no lock
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return true;
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}
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try {
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return lockStore.unLock(convertToLockDO(locks));
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} catch (StoreException e) {
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throw e;
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} catch (Exception t) {
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LOGGER.error("unLock error, locks:{}", CollectionUtils.toString(locks), t);
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return false;
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}
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}
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@Override
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public boolean releaseLock(String xid, Long branchId) {
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try {
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return lockStore.unLock(branchId);
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} catch (StoreException e) {
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throw e;
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} catch (Exception t) {
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LOGGER.error("unLock by branchId error, xid {}, branchId:{}", xid, branchId, t);
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return false;
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}
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}
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@Override
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public boolean releaseLock(String xid) {
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try {
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return lockStore.unLock(xid);
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} catch (StoreException e) {
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throw e;
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} catch (Exception t) {
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LOGGER.error("unLock by branchIds error, xid {}", xid, t);
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return false;
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}
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}
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@Override
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public boolean isLockable(List<RowLock> locks) {
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if (CollectionUtils.isEmpty(locks)) {
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// no lock
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return true;
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}
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try {
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return lockStore.isLockable(convertToLockDO(locks));
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} catch (DataAccessException e) {
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throw e;
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} catch (Exception t) {
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LOGGER.error("isLockable error, locks:{}", CollectionUtils.toString(locks), t);
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return false;
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}
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}
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@Override
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public void updateLockStatus(String xid, LockStatus lockStatus) {
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lockStore.updateLockStatus(xid, lockStatus);
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}
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/**
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* Sets lock store.
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*
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* @param lockStore the lock store
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*/
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public void setLockStore(LockStore lockStore) {
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this.lockStore = lockStore;
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}
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}
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