poapsis.ortserver.transport.kubernetes-jobmonitor.0.1.0-RC3.source-code.JobMonitor.kt Maven / Gradle / Ivy
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Part of the ORT Server, the reference implementation of Eclipse Apoapsis.
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/*
* Copyright (C) 2023 The ORT Server Authors (See )
*
* Licensed 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
*
* https://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.
*
* SPDX-License-Identifier: Apache-2.0
* License-Filename: LICENSE
*/
package org.eclipse.apoapsis.ortserver.transport.kubernetes.jobmonitor
import org.eclipse.apoapsis.ortserver.transport.kubernetes.jobmonitor.JobHandler.Companion.isFailed
import org.slf4j.LoggerFactory
/**
* A class that monitors the set of Kubernetes jobs for failures.
*
* This class uses [JobWatchHelper] to track changes on the set of jobs. If a change event indicates a failed job,
* it sends a corresponding error message to the Orchestrator and removes the job immediately. That way the
* Orchestrator is notified rather fast if something goes wrong.
*
* To avoid that failures are missed if this component is temporarily down, there is also a periodic check that loads
* the list of current jobs and filters completed and failed ones. This makes sure that all failures are detected,
* although with a potential delay.
*/
internal class JobMonitor(
/** The object retrieving job change events. */
private val watchHelper: JobWatchHelper,
/** The object for manipulating jobs. */
private val jobHandler: JobHandler,
) {
companion object {
private val logger = LoggerFactory.getLogger(JobMonitor::class.java)
}
/**
* Process events about changes in the state of jobs in an endless loop.
*/
suspend fun watch() {
logger.info("Entering watch loop.")
while (true) {
val job = watchHelper.nextEvent().`object`
if (job.isFailed()) {
jobHandler.deleteAndNotifyIfFailed(job)
}
}
}
}
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