use of io.confluent.ksql.rest.server.resources.KsqlResource 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));
}
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