public RegionEndpoint.Endpoint GetEndpointForService(string serviceName, bool dualStack)
{
RegionEndpoint.Endpoint endpointObject = null;
lock (_serviceMap)
{
if (!_servicesLoaded)
{
ParseAllServices();
_servicesLoaded = true;
}
if (!_serviceMap.TryGetEndpoint(serviceName, dualStack, out endpointObject))
{
// Do a fallback of creating an unknown endpoint based on the
// current region's hostname template.
endpointObject = CreateUnknownEndpoint(serviceName, dualStack);
}
}
return(endpointObject);
}
private void AddNormalEndpointToServiceMap(JsonData mergedEndpoint, string regionName, string serviceName)
{
string template = (string)mergedEndpoint["hostname"];
string hostname = template.Replace("{service}", serviceName)
.Replace("{region}", regionName)
.Replace("{dnsSuffix}", (string)_partitionJsonData["dnsSuffix"]);
string authRegion = null;
JsonData credentialScope = mergedEndpoint["credentialScope"];
if (credentialScope != null)
{
authRegion = DetermineAuthRegion(credentialScope);
}
JsonData deprecatedJson = mergedEndpoint["deprecated"];
var deprecated = deprecatedJson?.IsBoolean == true ? (bool)deprecatedJson : false;
var signatureOverride = DetermineSignatureOverride(mergedEndpoint, serviceName);
RegionEndpoint.Endpoint endpoint = new RegionEndpoint.Endpoint(hostname, authRegion, signatureOverride, deprecated);
_serviceMap.Add(serviceName, endpoint);
}
private void CreateEndpointAndAddToServiceMap(JsonData result, string regionName, string serviceName, bool dualStack)
{
string template = (string)result["hostname"];
string hostname = template.Replace("{service}", serviceName)
.Replace("{region}", regionName)
.Replace("{dnsSuffix}", (string)_partitionJsonData["dnsSuffix"]);
if (dualStack)
{
// We need special handling for S3's s3.amazonaws.com endpoint, which doesn't
// support dualstack (need to transform to s3.dualstack.us-east-1.amazonaws.com).
// Other endpoints that begin s3-* need to transform to s3.* for dualstack support.
// S3's 'external' endpoints do not support dualstack and should not be transformed.
if (serviceName.Equals("s3", StringComparison.OrdinalIgnoreCase))
{
if (hostname.Equals("s3.amazonaws.com", StringComparison.OrdinalIgnoreCase))
{
hostname = "s3.dualstack.us-east-1.amazonaws.com";
}
else
{
var isExternalEndpoint = hostname.StartsWith("s3-external-", StringComparison.OrdinalIgnoreCase);
if (!isExternalEndpoint)
{
// transform fixed s3-<region> to s3.<region> and then onto s3.dualstack.<region>,
// bypassing endpoints that do not start with the expected tags.
if (hostname.StartsWith("s3-", StringComparison.OrdinalIgnoreCase))
hostname = "s3." + hostname.Substring(3);
if (hostname.StartsWith("s3.", StringComparison.OrdinalIgnoreCase))
hostname = hostname.Replace("s3.", "s3.dualstack.");
}
}
}
else
{
// For certain region and endpoint combination, we actually get an explicit endpoint as "hostname" property
// (e.g. sts.ap-northeast-2.amazon.com). We can't assume that the template variable will be {service}.{region}.{dnsSuffix},
// so just construct a brand new endpoint.
hostname = string.Format(CultureInfo.InvariantCulture, "{0}.{1}.{2}", serviceName,
"dualstack." + regionName,
(string)_partitionJsonData["dnsSuffix"]);
}
}
string authRegion = null;
string customService = null;
JsonData credentialScope = result["credentialScope"];
if (credentialScope != null)
{
authRegion = DetermineAuthRegion(credentialScope);
// This is a workaround until we overhaul how the SDK consumes the v3 endpoint structure
// and customize the signing based on the metadata in the endpoint structure.
// There are points in SDK where we retrieve endpoints via service name such as "execute-api".
// Since we are building a cache, just add the custom service entry.
if (credentialScope["service"] != null && string.Compare((string)credentialScope["service"], serviceName, StringComparison.OrdinalIgnoreCase) != 0)
{
customService = (string)credentialScope["service"];
}
}
string signatureOverride = DetermineSignatureOverride(result, serviceName);
RegionEndpoint.Endpoint endpoint = new RegionEndpoint.Endpoint(hostname, authRegion, signatureOverride);
_serviceMap.Add(serviceName, dualStack, endpoint);
if (!string.IsNullOrEmpty(customService) && !_serviceMap.ContainsKey(customService))
{
_serviceMap.Add(customService, dualStack, endpoint);
}
}
public bool TryGetEndpoint(string serviceName, HashSet <string> variants, out RegionEndpoint.Endpoint endpoint)
{
if (variants == null || variants.Count == 0)
{
return(_serviceMap.TryGetValue(serviceName, out endpoint));
}
else
{
if (!_variantMap.ContainsKey(serviceName))
{
endpoint = default(RegionEndpoint.Endpoint);
return(false);
}
else
{
return(_variantMap[serviceName].TryGetValue(variants, out endpoint));
}
}
}
public bool TryGetEndpoint(string serviceName, bool dualStack, out RegionEndpoint.Endpoint endpoint)
{
return(this.GetMap(dualStack).TryGetValue(serviceName, out endpoint));
}
public void Add(string serviceName, bool dualStack, RegionEndpoint.Endpoint endpoint)
{
var map = dualStack ? _dualServiceMap : _serviceMap;
GetMap(dualStack).Add(serviceName, endpoint);
}
private void CreateEndpointAndAddToServiceMap(JsonData result, string regionName, string serviceName, bool dualStack)
{
string template = (string)result["hostname"];
string hostname = template.Replace("{service}", serviceName)
.Replace("{region}", regionName)
.Replace("{dnsSuffix}", (string)_partitionJsonData["dnsSuffix"]);
if (dualStack)
{
// We need special handling for S3's s3.amazonaws.com endpoint, which doesn't
// support dualstack (need to transform to s3.dualstack.us-east-1.amazonaws.com).
// Other endpoints that begin s3-* need to transform to s3.* for dualstack support.
// S3's 'external' endpoints do not support dualstack and should not be transformed.
if (serviceName.Equals("s3", StringComparison.OrdinalIgnoreCase))
{
if (hostname.Equals("s3.amazonaws.com", StringComparison.OrdinalIgnoreCase))
{
hostname = "s3.dualstack.us-east-1.amazonaws.com";
}
else
{
var isExternalEndpoint = hostname.StartsWith("s3-external-", StringComparison.OrdinalIgnoreCase);
if (!isExternalEndpoint)
{
// transform fixed s3-<region> to s3.<region> and then onto s3.dualstack.<region>,
// bypassing endpoints that do not start with the expected tags.
if (hostname.StartsWith("s3-", StringComparison.OrdinalIgnoreCase))
{
hostname = "s3." + hostname.Substring(3);
}
if (hostname.StartsWith("s3.", StringComparison.OrdinalIgnoreCase))
{
hostname = hostname.Replace("s3.", "s3.dualstack.");
}
}
}
}
else if (serviceName.Equals("s3-control", StringComparison.OrdinalIgnoreCase))
{
// transform s3-control.<region>.amazonaws.com or s3-control-fips.<region>.amazonaws.com into
// s3-control.dualstack.<region>.amazonaws.com and s3-control-fips.dualstack.<region>.amazonaws.com
if (hostname.StartsWith("s3-control", StringComparison.OrdinalIgnoreCase))
{
int firstDot = hostname.IndexOf('.');
if (firstDot >= 0)
{
hostname = hostname.Substring(0, firstDot) + ".dualstack." + hostname.Substring(firstDot + 1);
}
}
}
else
{
// For certain region and endpoint combination, we actually get an explicit endpoint as "hostname" property
// (e.g. sts.ap-northeast-2.amazon.com). We can't assume that the template variable will be {service}.{region}.{dnsSuffix},
// so just construct a brand new endpoint.
hostname = string.Format(CultureInfo.InvariantCulture, "{0}.{1}.{2}", serviceName,
"dualstack." + regionName,
(string)_partitionJsonData["dnsSuffix"]);
}
}
string authRegion = null;
string customService = null;
JsonData credentialScope = result["credentialScope"];
if (credentialScope != null)
{
authRegion = DetermineAuthRegion(credentialScope);
// This is a workaround until we overhaul how the SDK consumes the v3 endpoint structure
// and customize the signing based on the metadata in the endpoint structure.
// There are points in SDK where we retrieve endpoints via service name such as "execute-api".
// Since we are building a cache, just add the custom service entry.
if (credentialScope["service"] != null && string.Compare((string)credentialScope["service"], serviceName, StringComparison.OrdinalIgnoreCase) != 0)
{
customService = (string)credentialScope["service"];
}
}
string signatureOverride = DetermineSignatureOverride(result, serviceName);
RegionEndpoint.Endpoint endpoint = new RegionEndpoint.Endpoint(hostname, authRegion, signatureOverride);
_serviceMap.Add(serviceName, dualStack, endpoint);
if (!string.IsNullOrEmpty(customService) && !_serviceMap.ContainsKey(customService))
{
_serviceMap.Add(customService, dualStack, endpoint);
}
}
internal static string GetUrl(RegionEndpoint regionEndpoint, string regionEndpointServiceName, bool useHttp, bool useDualStack)
{
RegionEndpoint.Endpoint endpointForService = regionEndpoint.GetEndpointForService(regionEndpointServiceName, useDualStack);
return(new Uri(string.Format(CultureInfo.InvariantCulture, "{0}{1}", useHttp ? "http://" : "https://", endpointForService.Hostname)).AbsoluteUri);
}
