/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* 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 org.apache.ambari.view.huetoambarimigration.migration.pig.pigscript;
import org.apache.ambari.view.ViewContext;
import org.apache.ambari.view.huetoambarimigration.datasource.DataSourceAmbariDatabase;
import org.apache.ambari.view.huetoambarimigration.datasource.DataSourceHueDatabase;
import org.apache.ambari.view.huetoambarimigration.resources.scripts.models.PigModel;
import org.apache.ambari.view.huetoambarimigration.persistence.utils.ItemNotFound;
import org.apache.ambari.view.huetoambarimigration.datasource.queryset.ambariqueryset.pig.savedscriptqueryset.*;
import org.apache.ambari.view.huetoambarimigration.datasource.queryset.huequeryset.pig.savedscriptqueryset.*;
import org.apache.ambari.view.huetoambarimigration.resources.PersonalCRUDResourceManager;
import org.apache.ambari.view.huetoambarimigration.resources.scripts.MigrationResourceManager;
import org.apache.ambari.view.huetoambarimigration.resources.scripts.models.MigrationResponse;
import org.apache.ambari.view.huetoambarimigration.migration.configuration.ConfigurationCheckImplementation;
import org.apache.log4j.Logger;
import java.beans.PropertyVetoException;
import java.io.IOException;
import java.net.URISyntaxException;
import java.sql.Connection;
import java.sql.SQLException;
import java.text.ParseException;
import java.util.ArrayList;
public class PigScriptMigrationUtility {
protected MigrationResourceManager resourceManager = null;
public synchronized PersonalCRUDResourceManager<MigrationResponse> getResourceManager(ViewContext view) {
if (resourceManager == null) {
resourceManager = new MigrationResourceManager(view);
}
return resourceManager;
}
public void pigScriptMigration(String username, String instance, String startDate, String endDate, ViewContext view, MigrationResponse migrationresult, String jobid) throws IOException, ItemNotFound {
long startTime = System.currentTimeMillis();
final Logger logger = Logger.getLogger(PigScriptMigrationUtility.class);
Connection connectionHuedb = null;
Connection connectionAmbaridb = null;
logger.info("-------------------------------------");
logger.info("pig saved script Migration started");
logger.info("-------------------------------------");
int i = 0;
logger.info("start date: " + startDate);
logger.info("enddate date: " + endDate);
logger.info("instance is: " + instance);
logger.info("hue username is : " + username);
//Reading the configuration file
PigScriptMigrationImplementation pigsavedscriptmigration = new PigScriptMigrationImplementation();
QuerySetHueDb huedatabase = null;
if (view.getProperties().get("huedrivername").contains("mysql")) {
huedatabase = new MysqlQuerySetHueDb();
} else if (view.getProperties().get("huedrivername").contains("postgresql")) {
huedatabase = new PostgressQuerySetHueDb();
} else if (view.getProperties().get("huedrivername").contains("sqlite")) {
huedatabase = new SqliteQuerySetHueDb();
} else if (view.getProperties().get("huedrivername").contains("oracle")) {
huedatabase = new OracleQuerySetHueDb();
}
QuerySetAmbariDB ambaridatabase = null;
if (view.getProperties().get("ambaridrivername").contains("mysql")) {
ambaridatabase = new MysqlQuerySetAmbariDB();
} else if (view.getProperties().get("ambaridrivername").contains("postgresql")) {
ambaridatabase = new PostgressQuerySetAmbariDB();
} else if (view.getProperties().get("ambaridrivername").contains("oracle")) {
ambaridatabase = new OracleQuerySetAmbariDB();
}
int maxcountforsavequery = 0, maxcountforpigsavedscript = 0;
String time = null, timetobeInorder = null;
Long epochTime = null;
String dirNameForPigScript, completeDirandFilePath, pigscriptFilename = "";
int pigInstanceTableName, sequence;
ArrayList<PigModel> dbpojoPigSavedscript = new ArrayList<PigModel>();
try {
String[] usernames = username.split(",");
int totalQueries = 0;
for (int k = 0; k < usernames.length; k++) {
connectionHuedb = DataSourceHueDatabase.getInstance(view.getProperties().get("huedrivername"), view.getProperties().get("huejdbcurl"), view.getProperties().get("huedbusername"), view.getProperties().get("huedbpassword")).getConnection();//connection to Hue DB
username = usernames[k];
migrationresult.setProgressPercentage(0);
logger.info("Migration started for user " + username);
dbpojoPigSavedscript = pigsavedscriptmigration.fetchFromHueDatabase(username, startDate, endDate, connectionHuedb, huedatabase);// Fetching pig script details from Hue DB
totalQueries += dbpojoPigSavedscript.size();
for (int j = 0; j < dbpojoPigSavedscript.size(); j++) {
logger.info("the query fetched from hue=" + dbpojoPigSavedscript.get(j).getScript());
}
/* If No pig Script has been fetched from Hue db according to our search criteria*/
if (dbpojoPigSavedscript.size() == 0) {
logger.info("No queries has been selected for the user " + username + " between dates: " + startDate + " - " + endDate);
} else {
connectionAmbaridb = DataSourceAmbariDatabase.getInstance(view.getProperties().get("ambaridrivername"), view.getProperties().get("ambarijdbcurl"), view.getProperties().get("ambaridbusername"), view.getProperties().get("ambaridbpassword")).getConnection();// connecting to ambari db
connectionAmbaridb.setAutoCommit(false);
logger.info("loop will continue for " + dbpojoPigSavedscript.size() + "times");
//for each pig script found in Hue Database
pigInstanceTableName = pigsavedscriptmigration.fetchInstanceTablenamePigScript(connectionAmbaridb, instance, ambaridatabase);// finding the table name in ambari from the given instance
sequence = pigsavedscriptmigration.fetchSequenceno(connectionAmbaridb, pigInstanceTableName, ambaridatabase);
for (i = 0; i < dbpojoPigSavedscript.size(); i++) {
float calc = ((float) (i + 1)) / dbpojoPigSavedscript.size() * 100;
int progressPercentage = Math.round(calc);
migrationresult.setProgressPercentage(progressPercentage);
migrationresult.setNumberOfQueryTransfered(i + 1);
getResourceManager(view).update(migrationresult, jobid);
logger.info("Loop No." + (i + 1));
logger.info("________________");
logger.info("the title of script: " + dbpojoPigSavedscript.get(i).getTitle());
time = pigsavedscriptmigration.getTime();
timetobeInorder = pigsavedscriptmigration.getTimeInorder();
epochTime = pigsavedscriptmigration.getEpochTime();
maxcountforpigsavedscript = i + sequence + 1;
if (usernames[k].equals("all")) {
username = dbpojoPigSavedscript.get(i).getUserName();
}
dirNameForPigScript = "/user/" + username + "/pig/scripts/";
pigscriptFilename = dbpojoPigSavedscript.get(i).getTitle() + "-" + time + ".pig";
completeDirandFilePath = dirNameForPigScript + pigscriptFilename;
pigsavedscriptmigration.writetPigScripttoLocalFile(dbpojoPigSavedscript.get(i).getScript(), dbpojoPigSavedscript.get(i).getTitle(), dbpojoPigSavedscript.get(i).getDt(), ConfigurationCheckImplementation.getHomeDir(), pigscriptFilename);
pigsavedscriptmigration.insertRowForPigScript(completeDirandFilePath, maxcountforsavequery, maxcountforpigsavedscript, time, timetobeInorder, epochTime, dbpojoPigSavedscript.get(i).getTitle(), connectionAmbaridb, pigInstanceTableName, instance, i, ambaridatabase, username);
if (view.getProperties().get("KerberoseEnabled").equals("y")) {
pigsavedscriptmigration.createDirPigScriptSecured(dirNameForPigScript, view.getProperties().get("namenode_URI_Ambari"), username, view.getProperties().get("PrincipalUserName"));
pigsavedscriptmigration.putFileinHdfsSecured(ConfigurationCheckImplementation.getHomeDir() + pigscriptFilename, dirNameForPigScript, view.getProperties().get("namenode_URI_Ambari"), username, view.getProperties().get("PrincipalUserName"));
} else {
pigsavedscriptmigration.createDirPigScript(dirNameForPigScript, view.getProperties().get("namenode_URI_Ambari"), username);
pigsavedscriptmigration.putFileinHdfs(ConfigurationCheckImplementation.getHomeDir() + pigscriptFilename, dirNameForPigScript, view.getProperties().get("namenode_URI_Ambari"), username);
}
logger.info(dbpojoPigSavedscript.get(i).getTitle() + "Migrated to Ambari");
pigsavedscriptmigration.deletePigScriptLocalFile(ConfigurationCheckImplementation.getHomeDir(), pigscriptFilename);
}
pigsavedscriptmigration.updateSequenceno(connectionAmbaridb, maxcountforpigsavedscript, pigInstanceTableName, ambaridatabase);
connectionAmbaridb.commit();
}
logger.info("Migration completed for user " + username);
}
logger.info("Migration Completed");
migrationresult.setFlag(1);
if (totalQueries == 0) {
migrationresult.setNumberOfQueryTransfered(0);
migrationresult.setTotalNoQuery(0);
} else {
migrationresult.setNumberOfQueryTransfered(totalQueries);
migrationresult.setTotalNoQuery(totalQueries);
migrationresult.setProgressPercentage(100);
}
getResourceManager(view).update(migrationresult, jobid);
} catch (SQLException e) {
logger.error("Sql exception in ambari database", e);
migrationresult.setError("SQL Exception: " + e.getMessage());
try {
connectionAmbaridb.rollback();
logger.info("rollback done");
} catch (SQLException e1) {
logger.error("Sql exception while doing roll back", e1);
}
} catch (ClassNotFoundException e2) {
logger.error("class not found exception", e2);
migrationresult.setError("Class Not Found Exception: " + e2.getMessage());
} catch (ParseException e) {
logger.error("ParseException: ", e);
migrationresult.setError("Parse Exception: " + e.getMessage());
} catch (PropertyVetoException e) {
logger.error("PropertyVetoException: ", e);
migrationresult.setError("Property Veto Exception: " + e.getMessage());
} catch (URISyntaxException e) {
e.printStackTrace();
migrationresult.setError("URISyntaxException: " + e.getMessage());
} catch (Exception e) {
logger.error("Generic Exception: ", e);
migrationresult.setError("Exception: " + e.getMessage());
} finally {
if (null != connectionAmbaridb)
try {
connectionAmbaridb.close();
} catch (SQLException e) {
logger.error("connection close exception: ", e);
migrationresult.setError("Error Closing Connection: " + e.getMessage());
}
getResourceManager(view).update(migrationresult, jobid);
}
long stopTime = System.currentTimeMillis();
long elapsedTime = stopTime - startTime;
migrationresult.setJobtype("pigsavedscriptmigration");
migrationresult.setTotalTimeTaken(String.valueOf(elapsedTime));
getResourceManager(view).update(migrationresult, jobid);
logger.info("----------------------------------");
logger.info("pig saved script Migration ends");
logger.info("----------------------------------");
}
}