/*
*
* Copyright 2013 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.simianarmy.aws.conformity.rule;
import com.google.common.collect.Lists;
import com.netflix.simianarmy.conformity.AutoScalingGroup;
import com.netflix.simianarmy.conformity.Cluster;
import com.netflix.simianarmy.conformity.Conformity;
import com.netflix.simianarmy.conformity.ConformityRule;
import org.apache.commons.lang.Validate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Collection;
/**
* The class implementing a conformity rule that checks if all instances in a cluster has status url.
*/
public class InstanceHasStatusUrl implements ConformityRule {
private static final Logger LOGGER = LoggerFactory.getLogger(InstanceHasStatusUrl.class);
private static final String RULE_NAME = "InstanceHasStatusUrl";
private static final String REASON = "Status url not defined";
private final ConformityEurekaClient conformityEurekaClient;
/**
* Constructor.
* @param conformityEurekaClient
* the client to access the Discovery/Eureka service for checking the status of instances.
*/
public InstanceHasStatusUrl(ConformityEurekaClient conformityEurekaClient) {
Validate.notNull(conformityEurekaClient);
this.conformityEurekaClient = conformityEurekaClient;
}
@Override
public Conformity check(Cluster cluster) {
Collection<String> failedComponents = Lists.newArrayList();
for (AutoScalingGroup asg : cluster.getAutoScalingGroups()) {
if (asg.isSuspended()) {
continue;
}
for (String instance : asg.getInstances()) {
if (!conformityEurekaClient.hasStatusUrl(cluster.getRegion(), instance)) {
LOGGER.info(String.format("Instance %s does not have a status page url in discovery.",
instance));
failedComponents.add(instance);
}
}
}
return new Conformity(getName(), failedComponents);
}
@Override
public String getName() {
return RULE_NAME;
}
@Override
public String getNonconformingReason() {
return REASON;
}
}