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.../java/org/csanchez/jenkins/plugins/kubernetes/pipeline/KubernetesAgentErrorCondition.java
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| /* | ||
| * Copyright 2021 CloudBees, Inc. | ||
| * | ||
| * 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 | ||
| * | ||
| * 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. | ||
| */ | ||
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| package org.csanchez.jenkins.plugins.kubernetes.pipeline; | ||
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| import hudson.Extension; | ||
| import hudson.ExtensionList; | ||
| import hudson.model.Node; | ||
| import hudson.model.labels.LabelAtom; | ||
| import java.io.IOException; | ||
| import java.util.HashSet; | ||
| import java.util.Set; | ||
| import java.util.logging.Logger; | ||
| import jenkins.model.Jenkins; | ||
| import org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud; | ||
| import org.csanchez.jenkins.plugins.kubernetes.KubernetesSlave; | ||
| import org.csanchez.jenkins.plugins.kubernetes.pod.retention.Reaper; | ||
| import org.jenkinsci.Symbol; | ||
| import org.jenkinsci.plugins.workflow.actions.ErrorAction; | ||
| import org.jenkinsci.plugins.workflow.actions.WorkspaceAction; | ||
| import org.jenkinsci.plugins.workflow.flow.ErrorCondition; | ||
| import org.jenkinsci.plugins.workflow.flow.FlowExecution; | ||
| import org.jenkinsci.plugins.workflow.graph.BlockEndNode; | ||
| import org.jenkinsci.plugins.workflow.graph.FlowNode; | ||
| import org.jenkinsci.plugins.workflow.graphanalysis.LinearBlockHoppingScanner; | ||
| import org.jenkinsci.plugins.workflow.steps.FlowInterruptedException; | ||
| import org.jenkinsci.plugins.workflow.steps.StepContext; | ||
| import org.jenkinsci.plugins.workflow.support.steps.AgentErrorCondition; | ||
| import org.jenkinsci.plugins.workflow.support.steps.ExecutorStepExecution; | ||
| import org.kohsuke.stapler.DataBoundConstructor; | ||
| import org.kohsuke.stapler.DataBoundSetter; | ||
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|
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| /** | ||
| * Qualifies {@code node} blocks associated with {@link KubernetesSlave} to be retried if the node was deleted. | ||
| * A more specific version of {@link AgentErrorCondition}. | ||
| */ | ||
| public class KubernetesAgentErrorCondition extends ErrorCondition { | ||
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| private static final Logger LOGGER = Logger.getLogger(KubernetesAgentErrorCondition.class.getName()); | ||
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| private static final Set<String> IGNORED_CONTAINER_TERMINATION_REASONS = new HashSet<>(); | ||
| static { | ||
| IGNORED_CONTAINER_TERMINATION_REASONS.add("OOMKilled"); | ||
| IGNORED_CONTAINER_TERMINATION_REASONS.add("Completed"); | ||
| IGNORED_CONTAINER_TERMINATION_REASONS.add("DeadlineExceeded"); | ||
| } | ||
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| private boolean handleNonKubernetes; | ||
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| @DataBoundConstructor public KubernetesAgentErrorCondition() {} | ||
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| public boolean isHandleNonKubernetes() { | ||
| return handleNonKubernetes; | ||
| } | ||
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| @DataBoundSetter public void setHandleNonKubernetes(boolean handleNonKubernetes) { | ||
| this.handleNonKubernetes = handleNonKubernetes; | ||
| } | ||
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| @Override | ||
| public boolean test(Throwable t, StepContext context) throws IOException, InterruptedException { | ||
| if (context == null) { | ||
| LOGGER.fine("Cannot check error without context"); | ||
| return handleNonKubernetes; | ||
| } | ||
| if (!new AgentErrorCondition().test(t, context)) { | ||
| LOGGER.fine(() -> "Not a recognized failure: " + t); | ||
| return false; | ||
| } | ||
| FlowNode _origin = ErrorAction.findOrigin(t, context.get(FlowExecution.class)); | ||
| if (_origin == null) { | ||
| LOGGER.fine(() -> "No recognized origin of error: " + t); | ||
| return handleNonKubernetes; | ||
| } | ||
| FlowNode origin = _origin instanceof BlockEndNode ? ((BlockEndNode) _origin).getStartNode() : _origin; | ||
| LOGGER.fine(() -> "Found origin " + origin + " " + origin.getDisplayFunctionName()); | ||
| LinearBlockHoppingScanner scanner = new LinearBlockHoppingScanner(); | ||
| scanner.setup(origin); | ||
| for (FlowNode callStack : scanner) { | ||
| WorkspaceAction ws = callStack.getPersistentAction(WorkspaceAction.class); | ||
| if (ws != null) { | ||
| String node = ws.getNode(); | ||
| Node n = Jenkins.get().getNode(node); | ||
| if (n != null) { | ||
| if (!(n instanceof KubernetesSlave)) { | ||
| LOGGER.fine(() -> node + " was not a K8s agent"); | ||
| return handleNonKubernetes; | ||
| } | ||
| } else { | ||
| // May have been removed already, but we can look up the labels to see what it was. | ||
| Set<LabelAtom> labels = ws.getLabels(); | ||
| if (labels.stream().noneMatch(l -> Jenkins.get().clouds.stream().anyMatch(c -> c instanceof KubernetesCloud && ((KubernetesCloud) c).getTemplate(l) != null))) { | ||
| LOGGER.fine(() -> node + " was not a K8s agent judging by " + labels); | ||
| return handleNonKubernetes; | ||
| } | ||
| } | ||
| Set<String> terminationReasons = ExtensionList.lookupSingleton(Reaper.class).terminationReasons(node); | ||
| if (terminationReasons.stream().anyMatch(r -> IGNORED_CONTAINER_TERMINATION_REASONS.contains(r))) { | ||
| LOGGER.fine(() -> "ignored termination reason(s) for " + node + ": " + terminationReasons); | ||
| return false; | ||
| } | ||
| LOGGER.fine(() -> "active on " + node + " (termination reasons: " + terminationReasons + ")"); | ||
| return true; | ||
| } | ||
| } | ||
| LOGGER.fine(() -> "found no WorkspaceAction starting from " + origin); | ||
| return handleNonKubernetes; | ||
| } | ||
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| @Symbol("kubernetesAgent") | ||
| @Extension public static final class DescriptorImpl extends ErrorConditionDescriptor { | ||
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| @Override public String getDisplayName() { | ||
| return "Kubernetes agent errors"; | ||
| } | ||
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| } | ||
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| } |
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