com.netflix.spinnaker.igor.NoDiscoveryApplicationStatusPublisher.java Source code

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Here is the source code for com.netflix.spinnaker.igor.NoDiscoveryApplicationStatusPublisher.java

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/*
 * Copyright 2017 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.spinnaker.igor;

import com.netflix.appinfo.InstanceInfo.InstanceStatus;
import com.netflix.discovery.StatusChangeEvent;
import com.netflix.spinnaker.kork.eureka.RemoteStatusChangedEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;

public class NoDiscoveryApplicationStatusPublisher implements ApplicationListener<ContextRefreshedEvent> {

    private static final Logger log = LoggerFactory.getLogger(NoDiscoveryApplicationStatusPublisher.class);

    private final ApplicationEventPublisher publisher;

    private static InstanceStatus instanceStatus = InstanceStatus.UNKNOWN;

    public NoDiscoveryApplicationStatusPublisher(ApplicationEventPublisher publisher) {
        this.publisher = publisher;
    }

    @Override
    public void onApplicationEvent(ContextRefreshedEvent event) {
        log.warn("No discovery client is available, assuming application is up");
        setInstanceStatus(InstanceStatus.UP);
    }

    private void setInstanceStatus(InstanceStatus current) {
        InstanceStatus previous = instanceStatus;
        instanceStatus = current;
        publisher.publishEvent(new RemoteStatusChangedEvent(new StatusChangeEvent(previous, current)));
    }

    public void setInstanceEnabled(boolean enabled) {
        setInstanceStatus(enabled ? InstanceStatus.UP : InstanceStatus.OUT_OF_SERVICE);
    }
}