private string GetHostedZoneIdFor(string dnsName)
{
log.LogLine($"Getting hosted zone id for {dnsName}");
var zoneName = string.Join(".", dnsName.Split('.').Skip(1));
var req = new ListHostedZonesByNameRequest
{
DNSName = zoneName
};
var response = R53.ListHostedZonesByNameAsync(req);
try
{
response.Wait();
}
catch (AggregateException ex)
{
foreach (var exp in ex.InnerExceptions)
{
log.LogLine(exp.ToString());
}
}
string id = response.Result.HostedZones[0].Id;
string result = id.Split('/')[2];
log.LogLine($"Returning {result}");
return(result);
}
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 <string> LookupIpAddressByZoneIdAndDNSName(string id, string dnsName)
{
var request = new ListResourceRecordSetsRequest
{
HostedZoneId = id,
StartRecordName = dnsName
};
var response = await R53.ListResourceRecordSetsAsync(request);
if (response.ResourceRecordSets.Count == 0 || response.ResourceRecordSets[0].ResourceRecords.Count == 0)
{
return(string.Empty);
}
return(response.ResourceRecordSets[0].ResourceRecords[0].Value);
}
