/*
*
* Copyright 2012 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.janitor.rule.launchconfig;
import com.netflix.simianarmy.Resource;
import com.netflix.simianarmy.MonkeyCalendar;
import com.netflix.simianarmy.aws.AWSResource;
import com.netflix.simianarmy.aws.janitor.crawler.LaunchConfigJanitorCrawler;
import com.netflix.simianarmy.janitor.Rule;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.Validate;
import org.joda.time.DateTime;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Date;
/**
* The rule for detecting the launch configurations that
* 1) have been created for certain days and
* 2) are not used by any auto scaling groups.
*/
public class OldUnusedLaunchConfigRule implements Rule {
/** The Constant LOGGER. */
private static final Logger LOGGER = LoggerFactory.getLogger(OldUnusedLaunchConfigRule.class);
private static final String TERMINATION_REASON = "Launch config is not used by any ASG";
private final MonkeyCalendar calendar;
private final int ageThreshold;
private final int retentionDays;
/**
* Constructor for OrphanedInstanceRule.
*
* @param calendar
* The calendar used to calculate the termination time
* @param ageThreshold
* The number of days that a launch configuration is considered as a cleanup candidate
* since it is created
* @param retentionDays
* The number of days that the unused launch configuration is retained before being terminated
*/
public OldUnusedLaunchConfigRule(MonkeyCalendar calendar, int ageThreshold, int retentionDays) {
Validate.notNull(calendar);
Validate.isTrue(ageThreshold >= 0);
Validate.isTrue(retentionDays >= 0);
this.calendar = calendar;
this.ageThreshold = ageThreshold;
this.retentionDays = retentionDays;
}
@Override
public boolean isValid(Resource resource) {
Validate.notNull(resource);
if (!"LAUNCH_CONFIG".equals(resource.getResourceType().name())) {
return true;
}
AWSResource lcResource = (AWSResource) resource;
String usedByASG = lcResource.getAdditionalField(LaunchConfigJanitorCrawler.LAUNCH_CONFIG_FIELD_USED_BY_ASG);
if (StringUtils.isNotEmpty(usedByASG) && !Boolean.parseBoolean(usedByASG)) {
if (resource.getLaunchTime() == null) {
LOGGER.error(String.format("The launch config %s has no creation time.", resource.getId()));
return true;
} else {
DateTime launchTime = new DateTime(resource.getLaunchTime().getTime());
DateTime now = new DateTime(calendar.now().getTimeInMillis());
if (now.isBefore(launchTime.plusDays(ageThreshold))) {
LOGGER.info(String.format("The unused launch config %s has not been created for more than %d days",
resource.getId(), ageThreshold));
return true;
}
LOGGER.info(String.format("The unused launch config %s has been created for more than %d days",
resource.getId(), ageThreshold));
if (resource.getExpectedTerminationTime() == null) {
Date terminationTime = calendar.getBusinessDay(new Date(now.getMillis()), retentionDays);
resource.setExpectedTerminationTime(terminationTime);
resource.setTerminationReason(TERMINATION_REASON);
}
return false;
}
}
return true;
}
}