问题描述：
在使用elastic-job的2.1.5版本开发时，因为有秒级任务发现有频繁的全量请求sql在执行：
SELECT original_task_id FROM JOB_STATUS_TRACE_LOG WHERE task_id = 'com.horizon..scheduler.task.CnTask@-@0@-@READY@[email protected]@-@47' and state='TASK_STAGING'
解决：
1.新版的代码已经解决该问题：
elasticjob-ecosystem/elasticjob-tracing/elasticjob-tracing-rdb/src/main/resources/META-INF/sql/PostgreSQL.properties
2.旧版本需要将elastic-job-common-core.jar方法
com.dangdang.ddframe.job.event.rdb.JobEventRdbStorage#getOriginalTaskId
增加 limit 1；
因为maven依赖的问题，我直接将com.dangdang.ddframe.job.event.rdb.JobEventRdbStorage源码复制一份，更改完了之后放到项目中使用即可：
更改后的源码：
/*标签：STATUS,preparedStatement,TRACE,elastic,setString,jobExecutionEvent,final,conn,St From： https://blog.51cto.com/u_2870645/5978685
* Copyright 1999-2015 dangdang.com.
* <p>
* 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.
* </p>
*/
package com.dangdang.ddframe.job.event.rdb;
import com.dangdang.ddframe.job.context.ExecutionType;
import com.dangdang.ddframe.job.event.type.JobExecutionEvent;
import com.dangdang.ddframe.job.event.type.JobStatusTraceEvent;
import com.dangdang.ddframe.job.event.type.JobStatusTraceEvent.Source;
import com.dangdang.ddframe.job.event.type.JobStatusTraceEvent.State;
import com.google.common.base.Strings;
import lombok.extern.slf4j.Slf4j;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
/**
* 运行痕迹事件数据库存储.
*
* @author caohao
*/
@Slf4j
final class JobEventRdbStorage {
private static final String TABLE_JOB_EXECUTION_LOG = "JOB_EXECUTION_LOG";
private static final String TABLE_JOB_STATUS_TRACE_LOG = "JOB_STATUS_TRACE_LOG";
private static final String TASK_ID_STATE_INDEX = "TASK_ID_STATE_INDEX";
private final DataSource dataSource;
private DatabaseType databaseType;
JobEventRdbStorage(final DataSource dataSource) throws SQLException {
this.dataSource = dataSource;
initTablesAndIndexes();
}
private void initTablesAndIndexes() throws SQLException {
try (Connection conn = dataSource.getConnection()) {
createJobExecutionTableAndIndexIfNeeded(conn);
createJobStatusTraceTableAndIndexIfNeeded(conn);
databaseType = DatabaseType.valueFrom(conn.getMetaData().getDatabaseProductName());
}
}
private void createJobExecutionTableAndIndexIfNeeded(final Connection conn) throws SQLException {
DatabaseMetaData dbMetaData = conn.getMetaData();
try (ResultSet resultSet = dbMetaData.getTables(null, null, TABLE_JOB_EXECUTION_LOG, new String[]{"TABLE"})) {
if (!resultSet.next()) {
createJobExecutionTable(conn);
}
}
}
private void createJobStatusTraceTableAndIndexIfNeeded(final Connection conn) throws SQLException {
DatabaseMetaData dbMetaData = conn.getMetaData();
try (ResultSet resultSet = dbMetaData.getTables(null, null, TABLE_JOB_STATUS_TRACE_LOG, new String[]{"TABLE"})) {
if (!resultSet.next()) {
createJobStatusTraceTable(conn);
}
}
createTaskIdIndexIfNeeded(conn, TABLE_JOB_STATUS_TRACE_LOG, TASK_ID_STATE_INDEX);
}
private void createTaskIdIndexIfNeeded(final Connection conn, final String tableName, final String indexName) throws SQLException {
DatabaseMetaData dbMetaData = conn.getMetaData();
try (ResultSet resultSet = dbMetaData.getIndexInfo(null, null, tableName, false, false)) {
boolean hasTaskIdIndex = false;
while (resultSet.next()) {
if (indexName.equals(resultSet.getString("INDEX_NAME"))) {
hasTaskIdIndex = true;
}
}
if (!hasTaskIdIndex) {
createTaskIdAndStateIndex(conn, tableName);
}
}
}
private void createJobExecutionTable(final Connection conn) throws SQLException {
String dbSchema = "CREATE TABLE `" + TABLE_JOB_EXECUTION_LOG + "` ("
+ "`id` VARCHAR(40) NOT NULL, "
+ "`job_name` VARCHAR(100) NOT NULL, "
+ "`task_id` VARCHAR(255) NOT NULL, "
+ "`hostname` VARCHAR(255) NOT NULL, "
+ "`ip` VARCHAR(50) NOT NULL, "
+ "`sharding_item` INT NOT NULL, "
+ "`execution_source` VARCHAR(20) NOT NULL, "
+ "`failure_cause` VARCHAR(4000) NULL, "
+ "`is_success` INT NOT NULL, "
+ "`start_time` TIMESTAMP NULL, "
+ "`complete_time` TIMESTAMP NULL, "
+ "PRIMARY KEY (`id`));";
try (PreparedStatement preparedStatement = conn.prepareStatement(dbSchema)) {
preparedStatement.execute();
}
}
private void createJobStatusTraceTable(final Connection conn) throws SQLException {
String dbSchema = "CREATE TABLE `" + TABLE_JOB_STATUS_TRACE_LOG + "` ("
+ "`id` VARCHAR(40) NOT NULL, "
+ "`job_name` VARCHAR(100) NOT NULL, "
+ "`original_task_id` VARCHAR(255) NOT NULL, "
+ "`task_id` VARCHAR(255) NOT NULL, "
+ "`slave_id` VARCHAR(50) NOT NULL, "
+ "`source` VARCHAR(50) NOT NULL, "
+ "`execution_type` VARCHAR(20) NOT NULL, "
+ "`sharding_item` VARCHAR(100) NOT NULL, "
+ "`state` VARCHAR(20) NOT NULL, "
+ "`message` VARCHAR(4000) NULL, "
+ "`creation_time` TIMESTAMP NULL, "
+ "PRIMARY KEY (`id`));";
try (PreparedStatement preparedStatement = conn.prepareStatement(dbSchema)) {
preparedStatement.execute();
}
}
private void createTaskIdAndStateIndex(final Connection conn, final String tableName) throws SQLException {
String sql = "CREATE INDEX " + TASK_ID_STATE_INDEX + " ON " + tableName + " (`task_id`, `state`);";
try (PreparedStatement preparedStatement = conn.prepareStatement(sql)) {
preparedStatement.execute();
}
}
boolean addJobExecutionEvent(final JobExecutionEvent jobExecutionEvent) {
if (null == jobExecutionEvent.getCompleteTime()) {
return insertJobExecutionEvent(jobExecutionEvent);
} else {
if (jobExecutionEvent.isSuccess()) {
return updateJobExecutionEventWhenSuccess(jobExecutionEvent);
} else {
return updateJobExecutionEventFailure(jobExecutionEvent);
}
}
}
private boolean insertJobExecutionEvent(final JobExecutionEvent jobExecutionEvent) {
boolean result = false;
String sql = "INSERT INTO `" + TABLE_JOB_EXECUTION_LOG + "` (`id`, `job_name`, `task_id`, `hostname`, `ip`, `sharding_item`, `execution_source`, `is_success`, `start_time`) "
+ "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?);";
try (
Connection conn = dataSource.getConnection();
PreparedStatement preparedStatement = conn.prepareStatement(sql)) {
preparedStatement.setString(1, jobExecutionEvent.getId());
preparedStatement.setString(2, jobExecutionEvent.getJobName());
preparedStatement.setString(3, jobExecutionEvent.getTaskId());
preparedStatement.setString(4, jobExecutionEvent.getHostname());
preparedStatement.setString(5, jobExecutionEvent.getIp());
preparedStatement.setInt(6, jobExecutionEvent.getShardingItem());
preparedStatement.setString(7, jobExecutionEvent.getSource().toString());
preparedStatement.setBoolean(8, jobExecutionEvent.isSuccess());
preparedStatement.setTimestamp(9, new Timestamp(jobExecutionEvent.getStartTime().getTime()));
preparedStatement.execute();
result = true;
} catch (final SQLException ex) {
if (!isDuplicateRecord(ex)) {
// TODO 记录失败直接输出日志,未来可考虑配置化
log.error(ex.getMessage());
}
}
return result;
}
private boolean isDuplicateRecord(final SQLException ex) {
return DatabaseType.MySQL.equals(databaseType) && 1062 == ex.getErrorCode() || DatabaseType.H2.equals(databaseType) && 23505 == ex.getErrorCode()
|| DatabaseType.SQLServer.equals(databaseType) && 1 == ex.getErrorCode() || DatabaseType.DB2.equals(databaseType) && -803 == ex.getErrorCode()
|| DatabaseType.PostgreSQL.equals(databaseType) && 0 == ex.getErrorCode() || DatabaseType.Oracle.equals(databaseType) && 1 == ex.getErrorCode();
}
private boolean updateJobExecutionEventWhenSuccess(final JobExecutionEvent jobExecutionEvent) {
boolean result = false;
String sql = "UPDATE `" + TABLE_JOB_EXECUTION_LOG + "` SET `is_success` = ?, `complete_time` = ? WHERE id = ?";
try (
Connection conn = dataSource.getConnection();
PreparedStatement preparedStatement = conn.prepareStatement(sql)) {
preparedStatement.setBoolean(1, jobExecutionEvent.isSuccess());
preparedStatement.setTimestamp(2, new Timestamp(jobExecutionEvent.getCompleteTime().getTime()));
preparedStatement.setString(3, jobExecutionEvent.getId());
if (0 == preparedStatement.executeUpdate()) {
return insertJobExecutionEventWhenSuccess(jobExecutionEvent);
}
result = true;
} catch (final SQLException ex) {
// TODO 记录失败直接输出日志,未来可考虑配置化
log.error(ex.getMessage());
}
return result;
}
private boolean insertJobExecutionEventWhenSuccess(final JobExecutionEvent jobExecutionEvent) {
boolean result = false;
String sql = "INSERT INTO `" + TABLE_JOB_EXECUTION_LOG + "` (`id`, `job_name`, `task_id`, `hostname`, `ip`, `sharding_item`, `execution_source`, `is_success`, `start_time`, `complete_time`) "
+ "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?);";
try (
Connection conn = dataSource.getConnection();
PreparedStatement preparedStatement = conn.prepareStatement(sql)) {
preparedStatement.setString(1, jobExecutionEvent.getId());
preparedStatement.setString(2, jobExecutionEvent.getJobName());
preparedStatement.setString(3, jobExecutionEvent.getTaskId());
preparedStatement.setString(4, jobExecutionEvent.getHostname());
preparedStatement.setString(5, jobExecutionEvent.getIp());
preparedStatement.setInt(6, jobExecutionEvent.getShardingItem());
preparedStatement.setString(7, jobExecutionEvent.getSource().toString());
preparedStatement.setBoolean(8, jobExecutionEvent.isSuccess());
preparedStatement.setTimestamp(9, new Timestamp(jobExecutionEvent.getStartTime().getTime()));
preparedStatement.setTimestamp(10, new Timestamp(jobExecutionEvent.getCompleteTime().getTime()));
preparedStatement.execute();
result = true;
} catch (final SQLException ex) {
if (isDuplicateRecord(ex)) {
return updateJobExecutionEventWhenSuccess(jobExecutionEvent);
}
// TODO 记录失败直接输出日志,未来可考虑配置化
log.error(ex.getMessage());
}
return result;
}
private boolean updateJobExecutionEventFailure(final JobExecutionEvent jobExecutionEvent) {
boolean result = false;
String sql = "UPDATE `" + TABLE_JOB_EXECUTION_LOG + "` SET `is_success` = ?, `complete_time` = ?, `failure_cause` = ? WHERE id = ?";
try (
Connection conn = dataSource.getConnection();
PreparedStatement preparedStatement = conn.prepareStatement(sql)) {
preparedStatement.setBoolean(1, jobExecutionEvent.isSuccess());
preparedStatement.setTimestamp(2, new Timestamp(jobExecutionEvent.getCompleteTime().getTime()));
preparedStatement.setString(3, truncateString(jobExecutionEvent.getFailureCause()));
preparedStatement.setString(4, jobExecutionEvent.getId());
if (0 == preparedStatement.executeUpdate()) {
return insertJobExecutionEventWhenFailure(jobExecutionEvent);
}
result = true;
} catch (final SQLException ex) {
// TODO 记录失败直接输出日志,未来可考虑配置化
log.error(ex.getMessage());
}
return result;
}
private boolean insertJobExecutionEventWhenFailure(final JobExecutionEvent jobExecutionEvent) {
boolean result = false;
String sql = "INSERT INTO `" + TABLE_JOB_EXECUTION_LOG + "` (`id`, `job_name`, `task_id`, `hostname`, `ip`, `sharding_item`, `execution_source`, `failure_cause`, `is_success`, `start_time`) "
+ "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?);";
try (
Connection conn = dataSource.getConnection();
PreparedStatement preparedStatement = conn.prepareStatement(sql)) {
preparedStatement.setString(1, jobExecutionEvent.getId());
preparedStatement.setString(2, jobExecutionEvent.getJobName());
preparedStatement.setString(3, jobExecutionEvent.getTaskId());
preparedStatement.setString(4, jobExecutionEvent.getHostname());
preparedStatement.setString(5, jobExecutionEvent.getIp());
preparedStatement.setInt(6, jobExecutionEvent.getShardingItem());
preparedStatement.setString(7, jobExecutionEvent.getSource().toString());
preparedStatement.setString(8, truncateString(jobExecutionEvent.getFailureCause()));
preparedStatement.setBoolean(9, jobExecutionEvent.isSuccess());
preparedStatement.setTimestamp(10, new Timestamp(jobExecutionEvent.getStartTime().getTime()));
preparedStatement.execute();
result = true;
} catch (final SQLException ex) {
if (isDuplicateRecord(ex)) {
return updateJobExecutionEventFailure(jobExecutionEvent);
}
// TODO 记录失败直接输出日志,未来可考虑配置化
log.error(ex.getMessage());
}
return result;
}
boolean addJobStatusTraceEvent(final JobStatusTraceEvent jobStatusTraceEvent) {
String originalTaskId = jobStatusTraceEvent.getOriginalTaskId();
if (State.TASK_STAGING != jobStatusTraceEvent.getState()) {
originalTaskId = getOriginalTaskId(jobStatusTraceEvent.getTaskId());
}
boolean result = false;
String sql = "INSERT INTO `" + TABLE_JOB_STATUS_TRACE_LOG + "` (`id`, `job_name`, `original_task_id`, `task_id`, `slave_id`, `source`, `execution_type`, `sharding_item`, "
+ "`state`, `message`, `creation_time`) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);";
try (
Connection conn = dataSource.getConnection();
PreparedStatement preparedStatement = conn.prepareStatement(sql)) {
preparedStatement.setString(1, UUID.randomUUID().toString());
preparedStatement.setString(2, jobStatusTraceEvent.getJobName());
preparedStatement.setString(3, originalTaskId);
preparedStatement.setString(4, jobStatusTraceEvent.getTaskId());
preparedStatement.setString(5, jobStatusTraceEvent.getSlaveId());
preparedStatement.setString(6, jobStatusTraceEvent.getSource().toString());
preparedStatement.setString(7, jobStatusTraceEvent.getExecutionType().name());
preparedStatement.setString(8, jobStatusTraceEvent.getShardingItems());
preparedStatement.setString(9, jobStatusTraceEvent.getState().toString());
preparedStatement.setString(10, truncateString(jobStatusTraceEvent.getMessage()));
preparedStatement.setTimestamp(11, new Timestamp(jobStatusTraceEvent.getCreationTime().getTime()));
preparedStatement.execute();
result = true;
} catch (final SQLException ex) {
// TODO 记录失败直接输出日志,未来可考虑配置化
log.error(ex.getMessage());
}
return result;
}
private String getOriginalTaskId(final String taskId) {
String sql = String.format("SELECT original_task_id FROM %s WHERE task_id = '%s' and state='%s' limit 1", TABLE_JOB_STATUS_TRACE_LOG, taskId, State.TASK_STAGING);
String result = "";
try (
Connection conn = dataSource.getConnection();
PreparedStatement preparedStatement = conn.prepareStatement(sql);
ResultSet resultSet = preparedStatement.executeQuery()
) {
if (resultSet.next()) {
return resultSet.getString("original_task_id");
}
} catch (final SQLException ex) {
// TODO 记录失败直接输出日志,未来可考虑配置化
log.error(ex.getMessage());
}
return result;
}
private String truncateString(final String str) {
return !Strings.isNullOrEmpty(str) && str.length() > 4000 ? str.substring(0, 4000) : str;
}
List<JobStatusTraceEvent> getJobStatusTraceEvents(final String taskId) {
String sql = String.format("SELECT * FROM %s WHERE task_id = '%s'", TABLE_JOB_STATUS_TRACE_LOG, taskId);
List<JobStatusTraceEvent> result = new ArrayList<>();
try (
Connection conn = dataSource.getConnection();
PreparedStatement preparedStatement = conn.prepareStatement(sql);
ResultSet resultSet = preparedStatement.executeQuery()
) {
while (resultSet.next()) {
JobStatusTraceEvent jobStatusTraceEvent = new JobStatusTraceEvent(resultSet.getString(1), resultSet.getString(2), resultSet.getString(3), resultSet.getString(4),
resultSet.getString(5), Source.valueOf(resultSet.getString(6)), ExecutionType.valueOf(resultSet.getString(7)), resultSet.getString(8),
State.valueOf(resultSet.getString(9)), resultSet.getString(10), new SimpleDateFormat("yyyy-mm-dd HH:MM:SS").parse(resultSet.getString(11)));
result.add(jobStatusTraceEvent);
}
} catch (final SQLException | ParseException ex) {
// TODO 记录失败直接输出日志,未来可考虑配置化
log.error(ex.getMessage());
}
return result;
}
}