private async Task SetShutdownTime(EC2InstanceStateChangeEvent cloudWatchEvent, ILambdaContext context)
{
Instance instance = await GetInstanceDetails(cloudWatchEvent.Detail.InstanceId, context);
var tag = instance.Tags.FirstOrDefault(x => x.Key == "StopAfterMinutes");
if (tag == null)
{
context.Logger.LogLine($"Instance {instance.InstanceId} does not have a 'StopAfterMinutes' tag. Ignoring");
return;
}
if (!int.TryParse(tag.Value, out var minutes))
{
context.Logger.LogLine($"Instance {instance.InstanceId} has invalid time for 'StopAfterMinutes' tag. Ignoring");
return;
}
SetInstanceShutdownDto shutdownDto = new SetInstanceShutdownDto {
InstanceId = instance.InstanceId, StopAfterMinutes = minutes
};
string message = Newtonsoft.Json.JsonConvert.SerializeObject(shutdownDto);
var snsTopic = GetSnsTopic();
context.Logger.LogLine($"Publishing SetInstanceShutdown message to topic {snsTopic}. Message: {message}");
PublishRequest request = new PublishRequest(snsTopic, message);
await _snsClient.PublishAsync(request);
context.Logger.LogLine($"Published!");
}
private async Task UpdateInstanceTags(SetInstanceShutdownDto instanceShutdownDto, ILambdaContext context)
{
var shutdownTime = DateTime.UtcNow.AddMinutes(instanceShutdownDto.StopAfterMinutes);
CreateTagsRequest request = new CreateTagsRequest
{
Resources = new List <string> {
instanceShutdownDto.InstanceId
},
Tags = new List <Tag>
{
new Tag("ShutdownAfter", shutdownTime.ToString("O"))
}
};
context.Logger.LogLine($"Setting shutdown time for instance: {instanceShutdownDto.InstanceId} as {shutdownTime.ToString("O")}");
await _client.CreateTagsAsync(request);
context.Logger.LogLine($"ShutdownAfter tag set.");
}
