/*************************GO-LICENSE-START*********************************
* Copyright 2014 ThoughtWorks, Inc.
*
* 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.
*************************GO-LICENSE-END***********************************/
package com.thoughtworks.go.server.sqlmigration;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.HashMap;
import java.util.Map;
import org.h2.api.Trigger;
import org.apache.log4j.Logger;
public class Migration_86 implements Trigger {
private static final Logger LOGGER = Logger.getLogger(Migration_86.class);
private PreparedStatement updateStmt;
private PreparedStatement nextModificationIdStmt;
private Long totalCount;
public class PMRRecord {
private final long materialId;
private final String pipelineName;
public PMRRecord(long materialId, String pipelineName) {
this.materialId = materialId;
this.pipelineName = pipelineName;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
PMRRecord pmrRecord = (PMRRecord) o;
if (materialId != pmrRecord.materialId) {
return false;
}
if (pipelineName != null ? !pipelineName.equals(pmrRecord.pipelineName) : pmrRecord.pipelineName != null) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result = (int) (materialId ^ (materialId >>> 32));
result = 31 * result + (pipelineName != null ? pipelineName.hashCode() : 0);
return result;
}
}
Map<PMRRecord, Long> map = new HashMap<>();
public void init(Connection connection, String schemaName, String triggerName, String tableName, boolean before, int type) throws SQLException {
totalCount = executeScalar(connection, "SELECT COUNT(*) FROM pipelineMaterialRevisions");
updateStmt = connection.prepareStatement(
" UPDATE pipelineMaterialRevisions pmr"
+ " SET actualFromRevisionId = ? "
+ " WHERE pmr.Id = ?");
nextModificationIdStmt = connection.prepareStatement(
" SELECT TOP 1 id "
+ " FROM modifications "
+ " WHERE id > ? AND materialId = ?"
+ " ORDER BY id");
}
public void fire(Connection connection, Object[] oldRows, Object[] newRows) throws SQLException {
LOGGER.info(String.format("migrating %s rows", totalCount));
int count = 0;
ResultSet resultSet = queryPipelineMaterialRevisions(connection);
while(resultSet.next()) {
long pmrId = resultSet.getLong("Id");
long fromRevision = resultSet.getLong("fromRevisionId");
long materialId = resultSet.getLong("materialId");
String materialType = resultSet.getString("materialType");
String pipelineName = resultSet.getString("pipelineName");
PMRRecord pmrRecord = new PMRRecord(materialId, pipelineName);
long lastSeenFromRevision = fromRevision;
if ("DependencyMaterial".equals(materialType) && map.containsKey(pmrRecord)) {
lastSeenFromRevision = nextModificationId(map.get(pmrRecord), materialId);
}
fireUpdateQuery(pmrId, lastSeenFromRevision);
map.put(pmrRecord, fromRevision);
logCount(count++);
}
}
private void logCount(int count) {
if (count % 5000 == 0) {
LOGGER.info(String.format(" %s done", count));
}
}
private Long nextModificationId(long prevModificationId, long materialId) throws SQLException {
nextModificationIdStmt.setLong(1, prevModificationId);
nextModificationIdStmt.setLong(2, materialId);
return executeScalar(nextModificationIdStmt, prevModificationId);
}
private void fireUpdateQuery(long pmrId, long lastSeenPmrId) throws SQLException {
updateStmt.setLong(1, lastSeenPmrId);
updateStmt.setLong(2, pmrId);
updateStmt.executeUpdate();
}
private ResultSet queryPipelineMaterialRevisions(Connection connection) throws SQLException {
Statement statement = connection.createStatement();
String sql = "SELECT"
+ " pmr.Id AS Id,"
+ " pmr.fromRevisionId AS fromRevisionId,"
+ " pmr.materialId AS materialId,"
+ " m.type AS materialType,"
+ " p.name AS pipelineName"
+ " FROM"
+ " pipelines p"
+ " INNER JOIN pipelineMaterialRevisions pmr ON pmr.pipelineId = p.id"
+ " INNER JOIN materials m ON m.id = pmr.materialId"
+ " ORDER BY"
+ " p.name, m.id, pmr.id";
return statement.executeQuery(sql);
}
private static Long executeScalar(Connection connection, String sql) throws SQLException {
ResultSet rs = null;
try {
rs = connection.createStatement().executeQuery(sql);
rs.next();
return rs.getLong(1);
} finally {
closeQuietly(rs);
}
}
private static Long executeScalar(PreparedStatement ps, Long defaultValue) throws SQLException {
ResultSet rs = null;
try {
rs = ps.executeQuery();
if (rs.next()) {
return rs.getLong(1);
}
return defaultValue;
} finally {
closeQuietly(rs);
}
}
public static void closeQuietly(ResultSet rs) {
try {
if (rs != null) {
rs.close();
}
} catch (SQLException e) {
// ignore
}
}
public void close() throws SQLException {
}
public void remove() throws SQLException {
}
}