Timestream: ExAws: HTTP ERROR: :nxdomain for URL: "https:/"

[lugomateo]

Environment

• Erlang/OTP 25 [erts-13.1.5] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:1] [jit:ns]
• Elixir (1.13.4)
• {:ex_aws, "~> 2.3.2"},
• {:ex_aws_timestream, "~> 0.5.1"},
• {:hackney, "~> 1.9"},
• {:jason, "~> 1.2"},

Current configuration

config :ex_aws,
  access_key_id: [{:system, "AWS_ACCESS_KEY_ID"}, :instance_role],
  secret_access_key: [{:system, "AWS_SECRET_ACCESS_KEY"}, :instance_role],
  region: "aws-us-gov-west-1",
  debug_requests: true

When I run ExAws.Config.new(:timestream) on production environment, I get (with credentials omitted):

%{
  debug_requests: true,
  host: nil,
  http_client: ExAws.Request.Hackney,
  json_codec: Jason,
  normalize_path: true,
  port: 443,
  region: "aws-us-gov-west-1",
  require_imds_v2: false,
  retries: [max_attempts: 10, base_backoff_in_ms: 10, max_backoff_in_ms: 10000],
  scheme: "https://",
}

I removed the credentials for this post but access_key_id, secret_access_key, and security_token do appear so I am led to think configuration might not be the issue.

Then when I test a simple request
ExAws.Timestream.list_databases() |> ExAws.request()
I see the following:

14:01:19.105 [warning] ExAws: HTTP ERROR: :nxdomain for URL: "https:/" ATTEMPT: 1
14:01:19.159 [warning] ExAws: HTTP ERROR: :nxdomain for URL: "https:/" ATTEMPT: 2
14:01:19.204 [warning] ExAws: HTTP ERROR: :nxdomain for URL: "https:/" ATTEMPT: 3
14:01:19.291 [warning] ExAws: HTTP ERROR: :nxdomain for URL: "https:/" ATTEMPT: 4
14:01:19.402 [warning] ExAws: HTTP ERROR: :nxdomain for URL: "https:/" ATTEMPT: 5
14:01:19.482 [warning] ExAws: HTTP ERROR: :nxdomain for URL: "https:/" ATTEMPT: 6
14:01:20.117 [warning] ExAws: HTTP ERROR: :nxdomain for URL: "https:/" ATTEMPT: 7
14:01:20.934 [warning] ExAws: HTTP ERROR: :nxdomain for URL: "https:/" ATTEMPT: 8
14:01:21.591 [warning] ExAws: HTTP ERROR: :nxdomain for URL: "https:/" ATTEMPT: 9
** (MatchError) no match of right hand side value: {:error, :nxdomain}
    (ex_aws_timestream 0.5.1) lib/ex_aws/operation/endpoint_discovery.ex:32: ExAws.Operation.ExAws.Operation.EndpointDiscovery.handle_endpoint_operation/2
    (ex_aws_timestream 0.5.1) lib/ex_aws/operation/endpoint_discovery.ex:19: ExAws.Operation.ExAws.Operation.EndpointDiscovery.perform/2
14:01:26.490 [warning] ExAws: HTTP ERROR: :nxdomain for URL: "https:/" ATTEMPT: 10

[lugomateo]

Found the problem.
Just need to add timestream to the aws-us-gov partition in endpoints.exs

In the services for…

"partition" => "aws-us-gov",
"partitionName" => "AWS GovCloud (US)",

add…

"ingest.timestream" => %{"endpoints" => %{"us-gov-west-1" => %{}}},
"query.timestream" => %{"endpoints" => %{"us-gov-west-1" => %{}}},

To see your databases then call...
ExAws.Timestream.list_databases() |> ExAws.request(region: "us-gov-west-1")

Opened an issue in exaws to add the endpoint

[lpender]

ex-aws/ex_aws#939