Swap out spray for Akka http

[CCheSumo]

Akka HTTP is the successor for spray. With the first non-experimental release of Akka HTTP, spray has reached its end-of-life. http://doc.akka.io/docs/akka-http/current/scala/http/migration-guide/migration-from-spray.html We would like to swap out spray for Akka HTTP. There was an initial effort here #111.

Although all the tests passed, there seems to be a bug in the PR that was not caught. As a result, a request with the change results in the following error

com.sumologic.elasticsearch.restlastic.RestlasticSearchClient$ReturnTypes$ElasticErrorResponse: ElasticsearchError(status=403): JString({"message":"The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details.\n\nThe Canonical String for this request should have been\n'GET\n/_count\n\nhost:search-cche-metrics-es-23-crilv2kbplmz3epf4ykurg3fda.us-west-1.es.amazonaws.com\nx-amz-date:20170710T043641Z\n\nhost;x-amz-date\nbaa6846b65b050d71831bb2e4cd6e6f1593902f6d82b16a6c1f9979d14cfcd12'\n\nThe String-to-Sign should have been\n'AWS4-HMAC-SHA256\n20170710T043641Z\n20170710/us-west-1/es/aws4_request\nb8a1845acaa117e0d7db6b981f53738e749b98b02bfe0140eee14faa2229afb5'\n"})
at com.sumologic.elasticsearch.restlastic.RestlasticSearchClient$$anonfun$runRawEsRequest$1.apply(RestlasticSearchClient.scala:246)
at com.sumologic.elasticsearch.restlastic.RestlasticSearchClient$$anonfun$runRawEsRequest$1.apply(RestlasticSearchClient.scala:240)

I spent half a day on it, all the changes seem legit and I was not able to figure out what was going wrong. A revert back to spray fix the problem. Since it is blocking our upgrade, I am going to keep the spray version and raise an issue to fix the bug and revert-revert changes in #111 here (cc @rcoh @seanpquig).

[seanpquig]

@CCheSumo does that error occur on every request or sporadically? Don't remember seeing it in my own testing.

[CCheSumo]

@seanpquig this error occurs on every single request.

[rcoh]

I'd suggest setting up a little python webserver, dumping the entire request and looking for differences

…

On Mon, Jul 10, 2017, 3:37 PM Chuck Che ***@***.***> wrote: Reopened #130 <#130>. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#130 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAeFZ4gZ_hKiuX5DH6a9bjpvSFiglpeuks5sMqeugaJpZM4OSYbo> .

[CCheSumo]

@rcoh I compared the request with spray and akka-http, the only different is the generated the signature. Everything else is identical. Going to do a more thorough investigation when working on this issue.