private async Task UpdateRoute53(string instanceId, Instance instance, List <Amazon.EC2.Model.Tag> tags, string action)
{
log.LogLine($"Checking whether to update, delete or ignore");
foreach (var tag in tags)
{
string key = tag.Key;
if (key == PublicDNSTagKey || key == PrivateDNSTagKey)
{
log.LogLine($"Got one! {key}");
bool isPublicDNS = key == PublicDNSTagKey;
UpdateDeleteIgnoreDecision decision = MakeDeleteUpdateOrIgnoreDecision(action, isPublicDNS);
if (decision == UpdateDeleteIgnoreDecision.Ignore)
{
log.LogLine($"Ignoring {action} for {instanceId}");
continue;
}
string dnsName = tag.Value;
string message = string.Empty;
if (decision == UpdateDeleteIgnoreDecision.Update)
{
message = "Creating / updating";
}
else if (decision == UpdateDeleteIgnoreDecision.Delete)
{
message = "Deleting";
}
log.LogLine($"{message} record set for {instanceId} - {dnsName}");
string id = GetHostedZoneIdFor(dnsName);
string ipAddress = isPublicDNS ? instance.PublicIpAddress : instance.PrivateIpAddress;
ChangeResourceRecordSetsRequest rreq = await CreateChangeResourceRecordSetsRequest(id, dnsName, ipAddress, decision);
if (rreq == null)
{
log.LogLine("Couldn't update. Skipping this one.");
continue;
}
try
{
var rresp = await R53.ChangeResourceRecordSetsAsync(rreq);
log.LogLine($"Result: {rresp.ChangeInfo.Status}");
}
catch (AggregateException ex)
{
foreach (var exp in ex.InnerExceptions)
{
log.LogLine(exp.ToString());
}
}
}
}
}
private async Task <ChangeResourceRecordSetsRequest> CreateChangeResourceRecordSetsRequest(string id, string dnsName, string ipAddress, UpdateDeleteIgnoreDecision decision)
{
if (string.IsNullOrEmpty(ipAddress))
{
log.LogLine($"No ip address provided. Looking up by hosted zone / dnsname.");
ipAddress = await LookupIpAddressByZoneIdAndDNSName(id, dnsName);
if (string.IsNullOrEmpty(ipAddress))
{
log.LogLine($"No record set found for {id} - {dnsName}. Looks like it's been deleted already.");
return(null);
}
}
log.LogLine($"Creating {decision} change request for {dnsName} - {ipAddress} - {id}");
ChangeAction action = (decision == UpdateDeleteIgnoreDecision.Delete) ? ChangeAction.DELETE : ChangeAction.UPSERT;
var result = new ChangeResourceRecordSetsRequest
{
HostedZoneId = id,
ChangeBatch = new ChangeBatch
{
Changes = new List <Change>
{
new Change
{
Action = action,
ResourceRecordSet = new ResourceRecordSet
{
Name = dnsName,
ResourceRecords = new List <ResourceRecord>
{
new ResourceRecord {
Value = ipAddress
}
},
Type = RRType.A,
TTL = 300
}
}
}
}
};
log.LogLine("Returning:");
log.LogLine(JsonConvert.SerializeObject(result));
return(result);
}
