kafka.server.KafkaServerStartable.scala Maven / Gradle / Ivy
/**
* 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
*
* 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.
*/
package kafka.server
import java.util.Properties
import kafka.metrics.KafkaMetricsReporter
import kafka.utils.{VerifiableProperties, Logging}
object KafkaServerStartable {
def fromProps(serverProps: Properties) = {
KafkaMetricsReporter.startReporters(new VerifiableProperties(serverProps))
new KafkaServerStartable(KafkaConfig.fromProps(serverProps))
}
}
class KafkaServerStartable(val serverConfig: KafkaConfig) extends Logging {
private val server = new KafkaServer(serverConfig)
def startup() {
try {
server.startup()
}
catch {
case e: Throwable =>
fatal("Fatal error during KafkaServerStartable startup. Prepare to shutdown", e)
// KafkaServer already calls shutdown() internally, so this is purely for logging & the exit code
System.exit(1)
}
}
def shutdown() {
try {
server.shutdown()
}
catch {
case e: Throwable =>
fatal("Fatal error during KafkaServerStable shutdown. Prepare to halt", e)
// Calling exit() can lead to deadlock as exit() can be called multiple times. Force exit.
Runtime.getRuntime.halt(1)
}
}
/**
* Allow setting broker state from the startable.
* This is needed when a custom kafka server startable want to emit new states that it introduces.
*/
def setServerState(newState: Byte) {
server.brokerState.newState(newState)
}
def awaitShutdown() =
server.awaitShutdown
}