markusthoemmes commented on a change in pull request #2957: splunk logstore
URL: 
https://github.com/apache/incubator-openwhisk/pull/2957#discussion_r167669851
 
 

 ##########
 File path: 
common/scala/src/main/scala/whisk/core/containerpool/logging/SplunkLogStore.scala
 ##########
 @@ -0,0 +1,156 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package whisk.core.containerpool.logging
+
+import akka.actor.ActorSystem
+import akka.http.scaladsl.Http
+import java.time.ZoneId
+import java.time.format.DateTimeFormatter
+
+import akka.http.scaladsl.client.RequestBuilding.Post
+import akka.http.scaladsl.model.FormData
+import akka.http.scaladsl.model.HttpRequest
+import akka.http.scaladsl.model.HttpResponse
+import akka.http.scaladsl.model.headers.Authorization
+import akka.http.scaladsl.model.headers.BasicHttpCredentials
+import akka.http.scaladsl.unmarshalling.Unmarshal
+import akka.http.scaladsl.marshallers.sprayjson.SprayJsonSupport._
+import akka.stream.ActorMaterializer
+import akka.stream.OverflowStrategy
+import akka.stream.QueueOfferResult
+import akka.stream.scaladsl.Flow
+import akka.stream.scaladsl.Keep
+import akka.stream.scaladsl.Sink
+import akka.stream.scaladsl.Source
+import com.typesafe.sslconfig.akka.AkkaSSLConfig
+import scala.concurrent.Future
+import scala.concurrent.Promise
+import scala.util.Failure
+import scala.util.Success
+import scala.util.Try
+import spray.json.DefaultJsonProtocol._
+import spray.json.JsArray
+import spray.json._
+import whisk.core.entity.ActivationLogs
+import whisk.core.entity.WhiskActivation
+import pureconfig._
+
+case class SplunkLogStoreConfig(host: String,
+                                port: Int,
+                                username: String,
+                                password: String,
+                                index: String,
+                                logMessageField: String,
+                                activationIdField: String,
+                                disableSNI: Boolean)
+
+/**
+ * A Splunk based impl of LogDriverLogStore. Logs are routed to splunk via 
docker log driver, and retrieved via Splunk REST API
+ *
+ * @param actorSystem
+ * @param httpFlow Optional Flow to use for HttpRequest handling (to enable 
stream based tests)
+ */
+class SplunkLogStore(
+  actorSystem: ActorSystem,
+  httpFlow: Option[Flow[(HttpRequest, Promise[HttpResponse]), 
(Try[HttpResponse], Promise[HttpResponse]), Any]] = None,
+  splunkConfig: SplunkLogStoreConfig = 
loadConfigOrThrow[SplunkLogStoreConfig]("whisk.logstore.splunk"))
+    extends LogDriverLogStore(actorSystem) {
+  implicit val as = actorSystem
+  implicit val ec = as.dispatcher
+  implicit val materializer = ActorMaterializer()
+
+  private val splunkApi = "/services/search/jobs" //see 
http://docs.splunk.com/Documentation/Splunk/6.6.3/RESTREF/RESTsearch#search.2Fjobs
+
+  val log = actorSystem.log
+  val maxPendingRequests = 500
+
+  val defaultHttpFlow = 
Http().cachedHostConnectionPoolHttps[Promise[HttpResponse]](
+    host = splunkConfig.host,
+    port = splunkConfig.port,
+    connectionContext =
+      if (splunkConfig.disableSNI)
+        Http().createClientHttpsContext(AkkaSSLConfig().mapSettings(s => 
s.withLoose(s.loose.withDisableSNI(true))))
+      else Http().defaultClientHttpsContext)
+
+  override def fetchLogs(activation: WhiskActivation): Future[ActivationLogs] 
= {
+
+    //example curl request:
+    //    curl -u  username:password -k 
https://splunkhost:port/services/search/jobs -d exec_mode=oneshot -d 
output_mode=json -d "search=search index=\"someindex\" | spath=activation_id | 
search activation_id=a930e5ae4ad4455c8f2505d665aad282 |  table log_message" -d 
"earliest_time=2017-08-29T12:00:00" -d "latest_time=2017-10-29T12:00:00"
+    //example response:
+    //    
{"preview":false,"init_offset":0,"messages":[],"fields":[{"name":"log_message"}],"results":[{"log_message":"some
 log message"}], "highlighted":{}}
+    val search =
+      s"""search index="${splunkConfig.index}"| spath 
${splunkConfig.activationIdField}| search 
${splunkConfig.activationIdField}=${activation.activationId.toString}| table 
${splunkConfig.logMessageField}"""
+
+    val formatter = 
DateTimeFormatter.ofPattern("YYYY-MM-dd'T'hh:mm:ss").withZone(ZoneId.of("UTC"))
 
 Review comment:
   It does, and it [defaults to 
UTC](https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#now--) :)

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