Examples with CommandRunner io.confluent.ksql.rest.server.computation.CommandRunner used on opensource projects

Example 1 with CommandRunner

use of io.confluent.ksql.rest.server.computation.CommandRunner in project ksql by confluentinc.

the class KsqlRestApplication method buildApplication.

public static KsqlRestApplication buildApplication(KsqlRestConfig restConfig, boolean isUiEnabled, VersionCheckerAgent versionCheckerAgent) throws Exception {
    Map<String, Object> ksqlConfProperties = new HashMap<>();
    ksqlConfProperties.putAll(restConfig.getKsqlConfigProperties());
    KsqlConfig ksqlConfig = new KsqlConfig(ksqlConfProperties);
    adminClient = AdminClient.create(ksqlConfig.getKsqlAdminClientConfigProps());
    KsqlEngine ksqlEngine = new KsqlEngine(ksqlConfig, new KafkaTopicClientImpl(adminClient));
    KafkaTopicClient topicClient = ksqlEngine.getTopicClient();
    final String kafkaClusterId;
    try {
        kafkaClusterId = adminClient.describeCluster().clusterId().get();
    } catch (final UnsupportedVersionException e) {
        throw new KsqlException("The kafka brokers are incompatible with. " + "KSQL requires broker versions >= 0.10.1.x");
    }
    String commandTopic = restConfig.getCommandTopic(ksqlConfig.getString(KsqlConfig.KSQL_SERVICE_ID_CONFIG));
    ensureCommandTopic(restConfig, topicClient, commandTopic);
    Map<String, Expression> commandTopicProperties = new HashMap<>();
    commandTopicProperties.put(DdlConfig.VALUE_FORMAT_PROPERTY, new StringLiteral("json"));
    commandTopicProperties.put(DdlConfig.KAFKA_TOPIC_NAME_PROPERTY, new StringLiteral(commandTopic));
    ksqlEngine.getDdlCommandExec().execute(new RegisterTopicCommand(new RegisterTopic(QualifiedName.of(COMMANDS_KSQL_TOPIC_NAME), false, commandTopicProperties)));
    ksqlEngine.getDdlCommandExec().execute(new CreateStreamCommand("statementText", new CreateStream(QualifiedName.of(COMMANDS_STREAM_NAME), Collections.singletonList(new TableElement("STATEMENT", "STRING")), false, Collections.singletonMap(DdlConfig.TOPIC_NAME_PROPERTY, new StringLiteral(COMMANDS_KSQL_TOPIC_NAME))), Collections.emptyMap(), ksqlEngine.getTopicClient(), true));
    Map<String, Object> commandConsumerProperties = restConfig.getCommandConsumerProperties();
    KafkaConsumer<CommandId, Command> commandConsumer = new KafkaConsumer<>(commandConsumerProperties, getJsonDeserializer(CommandId.class, true), getJsonDeserializer(Command.class, false));
    KafkaProducer<CommandId, Command> commandProducer = new KafkaProducer<>(restConfig.getCommandProducerProperties(), getJsonSerializer(true), getJsonSerializer(false));
    CommandStore commandStore = new CommandStore(commandTopic, commandConsumer, commandProducer, new CommandIdAssigner(ksqlEngine.getMetaStore()));
    StatementParser statementParser = new StatementParser(ksqlEngine);
    StatementExecutor statementExecutor = new StatementExecutor(ksqlEngine, statementParser);
    CommandRunner commandRunner = new CommandRunner(statementExecutor, commandStore);
    RootDocument rootDocument = new RootDocument(isUiEnabled, restConfig.getList(RestConfig.LISTENERS_CONFIG).get(0));
    StatusResource statusResource = new StatusResource(statementExecutor);
    StreamedQueryResource streamedQueryResource = new StreamedQueryResource(ksqlEngine, statementParser, restConfig.getLong(KsqlRestConfig.STREAMED_QUERY_DISCONNECT_CHECK_MS_CONFIG));
    KsqlResource ksqlResource = new KsqlResource(ksqlEngine, commandStore, statementExecutor, restConfig.getLong(KsqlRestConfig.DISTRIBUTED_COMMAND_RESPONSE_TIMEOUT_MS_CONFIG));
    commandRunner.processPriorCommands();
    return new KsqlRestApplication(ksqlEngine, restConfig, commandRunner, rootDocument, statusResource, streamedQueryResource, ksqlResource, isUiEnabled, versionCheckerAgent, new ServerInfo(Version.getVersion(), kafkaClusterId));
}