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RejectAllJobsAgentMetadataInspector.java
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RejectAllJobsAgentMetadataInspector.java
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/*
*
* Copyright 2019 Netflix, 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.
*
*/
package com.netflix.genie.web.agent.inspectors.impl;
import com.netflix.genie.common.internal.dto.v4.AgentClientMetadata;
import com.netflix.genie.common.internal.jobs.JobConstants;
import com.netflix.genie.web.agent.inspectors.AgentMetadataInspector;
import com.netflix.genie.web.agent.inspectors.InspectionReport;
import org.springframework.core.env.Environment;
import javax.validation.Valid;
/**
* An {@link AgentMetadataInspector} that accepts or rejects all agents based on the value of an environment property.
* This mechanism allows temporarily disabling all new inbound jobs while at the same time keeping the servers running.
*
* @author mprimi
* @since 4.0.0
*/
public class RejectAllJobsAgentMetadataInspector implements AgentMetadataInspector {
private Environment environment;
/**
* Constructor.
*
* @param environment the environment
*/
public RejectAllJobsAgentMetadataInspector(final Environment environment) {
this.environment = environment;
}
/**
* {@inheritDoc}
*/
@Override
public InspectionReport inspect(@Valid final AgentClientMetadata agentClientMetadata) {
final boolean jobSubmissionEnabled = this.environment.getProperty(
JobConstants.JOB_SUBMISSION_ENABLED_PROPERTY_KEY,
Boolean.class,
true
);
if (jobSubmissionEnabled) {
return new InspectionReport(
InspectionReport.Decision.ACCEPT,
"Job submission is enabled"
);
} else {
final String message = environment.getProperty(
JobConstants.JOB_SUBMISSION_DISABLED_MESSAGE_KEY,
String.class,
JobConstants.JOB_SUBMISSION_DISABLED_DEFAULT_MESSAGE
);
return new InspectionReport(
InspectionReport.Decision.REJECT,
message
);
}
}
}