org.apache.samza.sql.runner.SamzaSqlApplicationRunner java code examples

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private SamzaSqlApplicationRunner(SamzaApplication app, Boolean localRunner, Config config) {
 this.runner = ApplicationRunners.getApplicationRunner(app, computeSamzaConfigs(localRunner, config));
}

public void runAndWaitForFinish(ExternalContext externalContext) {
 Validate.isTrue(runner instanceof LocalApplicationRunner, "This method can be called only in standalone mode.");
 run(externalContext);
 waitForFinish();
}

@Override
public NonQueryResult executeNonQuery(ExecutionContext context, List<String> statement) {
 lastErrorMsg = "";
 int execId = execIdSeq.incrementAndGet();
 Map<String, String> staticConfigs = fetchSamzaSqlConfig(execId, context);
 staticConfigs.put(SamzaSqlApplicationConfig.CFG_SQL_STMTS_JSON, JsonUtil.toJson(formatSqlStmts(statement)));
 SamzaSqlApplicationRunner runner;
 try {
  runner = new SamzaSqlApplicationRunner(true, new MapConfig(staticConfigs));
  runner.run(null);
 } catch (SamzaException ex) {
  String msg = "Execution of the query failed with exception ";
  lastErrorMsg = msg + ex.toString();
  LOG.error(msg, ex);
  return new NonQueryResult(execId, false);
 }
 executions.put(execId, runner);
 LOG.debug("Executing sql. Id ", execId);
 return new NonQueryResult(execId, true);
}

@Override
public boolean removeExecution(ExecutionContext context, int exeId) {
 lastErrorMsg = "";
 SamzaSqlApplicationRunner runner = executions.get(exeId);
 if (runner != null) {
  if (runner.status().getStatusCode().equals(ApplicationStatus.StatusCode.Running)) {
   lastErrorMsg = "Trying to remove a ongoing execution " + exeId;
   LOG.error(lastErrorMsg);
   return false;
  }
  executions.remove(exeId);
  LOG.debug("Stopping execution ", exeId);
  return true;
 } else {
  lastErrorMsg = "Trying to remove a non-existing SQL execution " + exeId;
  LOG.warn(lastErrorMsg);
  return false;
 }
}

public void runAndWaitForFinish() {
 runAndWaitForFinish(null);
}

@Override
public boolean stopExecution(ExecutionContext context, int exeId) {
 lastErrorMsg = "";
 SamzaSqlApplicationRunner runner = executions.get(exeId);
 if (runner != null) {
  LOG.debug("Stopping execution ", exeId);
  try {
   runner.kill();
   } catch (SamzaException ex) {
   String msg = "Stopping execution failed with exception ";
   lastErrorMsg = msg + ex.toString();
   LOG.warn(msg, ex);
   return false;
  }
  try {
   Thread.sleep(500); // wait for a second
  } catch (InterruptedException e) {
   e.printStackTrace();
  }
  return true;
 } else {
  lastErrorMsg = "Trying to stop a non-existing SQL execution " + exeId;
  LOG.warn(lastErrorMsg);
  return false;
 }
}

private ExecutionStatus queryExecutionStatus(SamzaSqlApplicationRunner runner) {
 lastErrorMsg = "";
 switch (runner.status().getStatusCode()) {
  case New:
   return ExecutionStatus.New;
  case Running:
   return ExecutionStatus.Running;
  case SuccessfulFinish:
   return ExecutionStatus.SuccessfulFinish;
  case UnsuccessfulFinish:
   return ExecutionStatus.UnsuccessfulFinish;
  default:
   lastErrorMsg = String.format("Unsupported execution status %s",
       runner.status().getStatusCode().toString());
   return null;
 }
}

private SamzaSqlApplicationRunner(SamzaApplication app, Boolean localRunner, Config config) {
 this.runner = ApplicationRunners.getApplicationRunner(app, computeSamzaConfigs(localRunner, config));
}

public void runAndWaitForFinish() {
 Validate.isTrue(runner instanceof LocalApplicationRunner, "This method can be called only in standalone mode.");
 run();
 waitForFinish();
}

@Override
public QueryResult executeQuery(ExecutionContext context, String statement) {
 lastErrorMsg = "";
 outputData.clear();
 int execId = execIdSeq.incrementAndGet();
 Map<String, String> staticConfigs = fetchSamzaSqlConfig(execId, context);
 List<String> sqlStmts = formatSqlStmts(Collections.singletonList(statement));
 staticConfigs.put(SamzaSqlApplicationConfig.CFG_SQL_STMTS_JSON, JsonUtil.toJson(sqlStmts));
 SamzaSqlApplicationRunner runner;
 try {
  runner = new SamzaSqlApplicationRunner(true, new MapConfig(staticConfigs));
  runner.run(null);
 } catch (SamzaException ex) {
  String msg = "Execution failed with exception ";
  lastErrorMsg = msg + ex.toString();
  LOG.error(msg, ex);
  return new QueryResult(execId, null, false);
 }
 executions.put(execId, runner);
 LOG.debug("Executing sql. Id ", execId);
 return new QueryResult(execId, generateResultSchema(new MapConfig(staticConfigs)), true);
}

 @Test
 public void testComputeSamzaConfigs() {
  Map<String, String> configs = SamzaSqlTestConfig.fetchStaticConfigsWithFactories(10);
  String sql1 = "Insert into testavro.outputTopic(id,long_value) select id, MyTest(id) as long_value from testavro.SIMPLE1";
  configs.put(SamzaSqlApplicationConfig.CFG_SQL_STMT, sql1);
  configs.put(SamzaSqlApplicationRunner.RUNNER_CONFIG, SamzaSqlApplicationRunner.class.getName());
  MapConfig samzaConfig = new MapConfig(configs);
  Config newConfigs = SamzaSqlApplicationRunner.computeSamzaConfigs(true, samzaConfig);
  Assert.assertEquals(newConfigs.get(SamzaSqlApplicationRunner.RUNNER_CONFIG), LocalApplicationRunner.class.getName());
  // Check whether five new configs added.
  Assert.assertEquals(newConfigs.size(), configs.size() + 5);

  newConfigs = SamzaSqlApplicationRunner.computeSamzaConfigs(false, samzaConfig);
  Assert.assertEquals(newConfigs.get(SamzaSqlApplicationRunner.RUNNER_CONFIG), RemoteApplicationRunner.class.getName());

  // Check whether five new configs added.
  Assert.assertEquals(newConfigs.size(), configs.size() + 5);
 }
}

@Test (expected = SamzaException.class)
public void testTranslateStreamTableCrossJoin() {
 Map<String, String> config = SamzaSqlTestConfig.fetchStaticConfigsWithFactories(configs, 1);
 String sql =
   "Insert into testavro.enrichedPageViewTopic(profileName, pageKey)"
     + " select p.name as profileName, pv.pageKey"
     + " from testavro.PAGEVIEW as pv, testavro.PROFILE.`$table` as p";
 config.put(SamzaSqlApplicationConfig.CFG_SQL_STMT, sql);
 Config samzaConfig = SamzaSqlApplicationRunner.computeSamzaConfigs(true, new MapConfig(config));
 List<String> sqlStmts = fetchSqlFromConfig(config);
 List<SamzaSqlQueryParser.QueryInfo> queryInfo = fetchQueryInfo(sqlStmts);
 SamzaSqlApplicationConfig samzaSqlApplicationConfig = new SamzaSqlApplicationConfig(new MapConfig(config),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSources).flatMap(Collection::stream)
     .collect(Collectors.toList()),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSink).collect(Collectors.toList()));
 StreamApplicationDescriptorImpl streamAppDesc = new StreamApplicationDescriptorImpl(streamApp -> { }, samzaConfig);
 QueryTranslator translator = new QueryTranslator(streamAppDesc, samzaSqlApplicationConfig);
 translator.translate(queryInfo.get(0), streamAppDesc, 0);
}

@Test (expected = SamzaException.class)
public void testTranslateStreamTableInnerJoinWithMissingStream() {
 Map<String, String> config = SamzaSqlTestConfig.fetchStaticConfigsWithFactories(configs, 10);
 String configIOResolverDomain =
   String.format(SamzaSqlApplicationConfig.CFG_FMT_SOURCE_RESOLVER_DOMAIN, "config");
 config.put(configIOResolverDomain + SamzaSqlApplicationConfig.CFG_FACTORY,
   ConfigBasedIOResolverFactory.class.getName());
 String sql =
   "Insert into testavro.enrichedPageViewTopic(profileName, pageKey)"
     + " select p.name as profileName, pv.pageKey"
     + " from testavro.PAGEVIEW as pv"
     + " join testavro.`$table` as p"
     + " on p.id = pv.profileId";
 config.put(SamzaSqlApplicationConfig.CFG_SQL_STMT, sql);
 Config samzaConfig = SamzaSqlApplicationRunner.computeSamzaConfigs(true, new MapConfig(config));
 List<String> sqlStmts = fetchSqlFromConfig(config);
 List<SamzaSqlQueryParser.QueryInfo> queryInfo = fetchQueryInfo(sqlStmts);
 SamzaSqlApplicationConfig samzaSqlApplicationConfig = new SamzaSqlApplicationConfig(new MapConfig(config),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSources).flatMap(Collection::stream)
     .collect(Collectors.toList()),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSink).collect(Collectors.toList()));
 StreamApplicationDescriptorImpl streamAppDesc = new StreamApplicationDescriptorImpl(streamApp -> { }, samzaConfig);
 QueryTranslator translator = new QueryTranslator(streamAppDesc, samzaSqlApplicationConfig);
 translator.translate(queryInfo.get(0), streamAppDesc, 0);
}

@Test (expected = SamzaException.class)
public void testTranslateStreamTableJoinWithSubQuery() {
 Map<String, String> config = SamzaSqlTestConfig.fetchStaticConfigsWithFactories(configs, 1);
 String sql =
   "Insert into testavro.enrichedPageViewTopic(profileName, pageKey)"
     + " select p.name as profileName, pv.pageKey"
     + " from testavro.PAGEVIEW as pv"
     + " where exists "
     + " (select p.id from testavro.PROFILE.`$table` as p"
     + " where p.id = pv.profileId)";
 config.put(SamzaSqlApplicationConfig.CFG_SQL_STMT, sql);
 Config samzaConfig = SamzaSqlApplicationRunner.computeSamzaConfigs(true, new MapConfig(config));
 List<String> sqlStmts = fetchSqlFromConfig(config);
 List<SamzaSqlQueryParser.QueryInfo> queryInfo = fetchQueryInfo(sqlStmts);
 SamzaSqlApplicationConfig samzaSqlApplicationConfig = new SamzaSqlApplicationConfig(new MapConfig(config),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSources).flatMap(Collection::stream)
     .collect(Collectors.toList()),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSink).collect(Collectors.toList()));
 StreamApplicationDescriptorImpl streamAppDesc = new StreamApplicationDescriptorImpl(streamApp -> { }, samzaConfig);
 QueryTranslator translator = new QueryTranslator(streamAppDesc, samzaSqlApplicationConfig);
 translator.translate(queryInfo.get(0), streamAppDesc, 0);
}

@Test (expected = SamzaException.class)
public void testTranslateStreamTableJoinWithoutJoinOperator() {
 Map<String, String> config = SamzaSqlTestConfig.fetchStaticConfigsWithFactories(configs, 1);
 String sql =
   "Insert into testavro.enrichedPageViewTopic(profileName, pageKey)"
     + " select p.name as profileName, pv.pageKey"
     + " from testavro.PAGEVIEW as pv, testavro.PROFILE.`$table` as p"
     + " where p.id = pv.profileId";
 config.put(SamzaSqlApplicationConfig.CFG_SQL_STMT, sql);
 Config samzaConfig = SamzaSqlApplicationRunner.computeSamzaConfigs(true, new MapConfig(config));
 List<String> sqlStmts = fetchSqlFromConfig(config);
 List<SamzaSqlQueryParser.QueryInfo> queryInfo = fetchQueryInfo(sqlStmts);
 SamzaSqlApplicationConfig samzaSqlApplicationConfig = new SamzaSqlApplicationConfig(new MapConfig(config),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSources).flatMap(Collection::stream)
     .collect(Collectors.toList()),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSink).collect(Collectors.toList()));
 StreamApplicationDescriptorImpl streamAppDesc = new StreamApplicationDescriptorImpl(streamApp -> { }, samzaConfig);
 QueryTranslator translator = new QueryTranslator(streamAppDesc, samzaSqlApplicationConfig);
 translator.translate(queryInfo.get(0), streamAppDesc, 0);
}

@Test (expected = SamzaException.class)
public void testTranslateTableTableJoin() {
 Map<String, String> config = SamzaSqlTestConfig.fetchStaticConfigsWithFactories(configs, 1);
 String sql =
   "Insert into testavro.enrichedPageViewTopic(profileName, pageKey)"
     + " select p.name as profileName, pv.pageKey"
     + " from testavro.PAGEVIEW.`$table` as pv"
     + " join testavro.PROFILE.`$table` as p"
     + " on p.id = pv.profileId";
 config.put(SamzaSqlApplicationConfig.CFG_SQL_STMT, sql);
 Config samzaConfig = SamzaSqlApplicationRunner.computeSamzaConfigs(true, new MapConfig(config));
 List<String> sqlStmts = fetchSqlFromConfig(config);
 List<SamzaSqlQueryParser.QueryInfo> queryInfo = fetchQueryInfo(sqlStmts);
 SamzaSqlApplicationConfig samzaSqlApplicationConfig = new SamzaSqlApplicationConfig(new MapConfig(config),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSources).flatMap(Collection::stream)
     .collect(Collectors.toList()),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSink).collect(Collectors.toList()));
 StreamApplicationDescriptorImpl streamAppDesc = new StreamApplicationDescriptorImpl(streamApp -> { }, samzaConfig);
 QueryTranslator translator = new QueryTranslator(streamAppDesc, samzaSqlApplicationConfig);
 translator.translate(queryInfo.get(0), streamAppDesc, 0);
}

@Test (expected = SamzaException.class)
public void testTranslateStreamTableJoinWithFullJoinOperator() {
 Map<String, String> config = SamzaSqlTestConfig.fetchStaticConfigsWithFactories(configs, 1);
 String sql =
   "Insert into testavro.enrichedPageViewTopic(profileName, pageKey)"
     + " select p.name as profileName, pv.pageKey"
     + " from testavro.PAGEVIEW as pv"
     + " full join testavro.PROFILE.`$table` as p"
     + " on p.id = pv.profileId";
 config.put(SamzaSqlApplicationConfig.CFG_SQL_STMT, sql);
 Config samzaConfig = SamzaSqlApplicationRunner.computeSamzaConfigs(true, new MapConfig(config));
 List<String> sqlStmts = fetchSqlFromConfig(config);
 List<SamzaSqlQueryParser.QueryInfo> queryInfo = fetchQueryInfo(sqlStmts);
 SamzaSqlApplicationConfig samzaSqlApplicationConfig = new SamzaSqlApplicationConfig(new MapConfig(config),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSources).flatMap(Collection::stream)
     .collect(Collectors.toList()),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSink).collect(Collectors.toList()));
 StreamApplicationDescriptorImpl streamAppDesc = new StreamApplicationDescriptorImpl(streamApp -> { }, samzaConfig);
 QueryTranslator translator = new QueryTranslator(streamAppDesc, samzaSqlApplicationConfig);
 translator.translate(queryInfo.get(0), streamAppDesc, 0);
}

@Test (expected = SamzaException.class)
public void testTranslateStreamStreamJoin() {
 Map<String, String> config = SamzaSqlTestConfig.fetchStaticConfigsWithFactories(configs, 1);
 String sql =
   "Insert into testavro.enrichedPageViewTopic(profileName, pageKey)"
     + " select p.name as profileName, pv.pageKey"
     + " from testavro.PAGEVIEW as pv"
     + " join testavro.PROFILE as p"
     + " on p.id = pv.profileId";
 config.put(SamzaSqlApplicationConfig.CFG_SQL_STMT, sql);
 Config samzaConfig = SamzaSqlApplicationRunner.computeSamzaConfigs(true, new MapConfig(config));
 List<String> sqlStmts = fetchSqlFromConfig(config);
 List<SamzaSqlQueryParser.QueryInfo> queryInfo = fetchQueryInfo(sqlStmts);
 SamzaSqlApplicationConfig samzaSqlApplicationConfig = new SamzaSqlApplicationConfig(new MapConfig(config),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSources).flatMap(Collection::stream)
     .collect(Collectors.toList()),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSink).collect(Collectors.toList()));
 StreamApplicationDescriptorImpl streamAppDesc = new StreamApplicationDescriptorImpl(streamApp -> { }, samzaConfig);
 QueryTranslator translator = new QueryTranslator(streamAppDesc, samzaSqlApplicationConfig);
 translator.translate(queryInfo.get(0), streamAppDesc, 0);
}

 @Test (expected = SamzaException.class)
 public void testTranslateGroupByWithSumAggregator() {
  Map<String, String> config = SamzaSqlTestConfig.fetchStaticConfigsWithFactories(configs, 10);
  String sql =
    "Insert into testavro.pageViewCountTopic(jobName, pageKey, `sum`)"
      + " select 'SampleJob' as jobName, pv.pageKey, sum(pv.profileId) as `sum`"
      + " from testavro.PAGEVIEW as pv" + " where pv.pageKey = 'job' or pv.pageKey = 'inbox'"
      + " group by (pv.pageKey)";
  config.put(SamzaSqlApplicationConfig.CFG_SQL_STMT, sql);
  Config samzaConfig = SamzaSqlApplicationRunner.computeSamzaConfigs(true, new MapConfig(config));

  List<String> sqlStmts = fetchSqlFromConfig(config);
  List<SamzaSqlQueryParser.QueryInfo> queryInfo = fetchQueryInfo(sqlStmts);
  SamzaSqlApplicationConfig samzaSqlApplicationConfig = new SamzaSqlApplicationConfig(new MapConfig(config),
    queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSources).flatMap(Collection::stream)
      .collect(Collectors.toList()),
    queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSink).collect(Collectors.toList()));

  StreamApplicationDescriptorImpl streamAppDesc = new StreamApplicationDescriptorImpl(streamApp -> { }, samzaConfig);
  QueryTranslator translator = new QueryTranslator(streamAppDesc, samzaSqlApplicationConfig);
  translator.translate(queryInfo.get(0), streamAppDesc, 0);
 }
}

@Test (expected = SamzaException.class)
public void testTranslateJoinWithIncorrectLeftJoin() {
 Map<String, String> config = SamzaSqlTestConfig.fetchStaticConfigsWithFactories(configs, 1);
 String sql =
   "Insert into testavro.enrichedPageViewTopic(profileName, pageKey)"
     + " select p.name as profileName, pv.pageKey"
     + " from testavro.PAGEVIEW.`$table` as pv"
     + " left join testavro.PROFILE as p"
     + " on p.id = pv.profileId";
 config.put(SamzaSqlApplicationConfig.CFG_SQL_STMT, sql);
 Config samzaConfig = SamzaSqlApplicationRunner.computeSamzaConfigs(true, new MapConfig(config));
 List<String> sqlStmts = fetchSqlFromConfig(config);
 List<SamzaSqlQueryParser.QueryInfo> queryInfo = fetchQueryInfo(sqlStmts);
 SamzaSqlApplicationConfig samzaSqlApplicationConfig = new SamzaSqlApplicationConfig(new MapConfig(config),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSources).flatMap(Collection::stream)
     .collect(Collectors.toList()),
   queryInfo.stream().map(SamzaSqlQueryParser.QueryInfo::getSink).collect(Collectors.toList()));
 StreamApplicationDescriptorImpl streamAppDesc = new StreamApplicationDescriptorImpl(streamApp -> { }, samzaConfig);
 QueryTranslator translator = new QueryTranslator(streamAppDesc, samzaSqlApplicationConfig);
 translator.translate(queryInfo.get(0), streamAppDesc, 0);
}

Javadoc

Application runner implementation for SamzaSqlApplication. SamzaSqlApplication needs SamzaSqlConfigRewriter to infer some of the configs from SQL statements. Since Samza's config rewriting capability is available only in the RemoteApplicationRunner. This runner invokes the SamzaSqlConfig re-writer if it is invoked on a standalone mode (i.e. localRunner == true) otherwise directly calls the RemoteApplicationRunner which automatically performs the config rewriting .

Most used methods

computeSamzaConfigs
run
waitForFinish
<init>
NOTE: This constructor is called from ApplicationRunners through reflection. Please refrain from upd
kill
runAndWaitForFinish
status

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How to useSamzaSqlApplicationRunner in org.apache.samza.sql.runner

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