rabbah commented on a change in pull request #3421: Add ElasticSearch Log Store
URL: 
https://github.com/apache/incubator-openwhisk/pull/3421#discussion_r173699456
 
 

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 File path: 
common/scala/src/main/scala/whisk/core/containerpool/logging/ElasticSearchLogStore.scala
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 @@ -0,0 +1,130 @@
+/*
+ * 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 java.nio.file.{Path, Paths}
+import java.time.LocalDate
+import java.time.format.DateTimeFormatter
+
+import akka.actor.ActorSystem
+import akka.http.scaladsl.model.HttpRequest
+import akka.http.scaladsl.model.Uri
+import akka.stream.scaladsl.Flow
+import akka.http.scaladsl.model.HttpResponse
+import akka.http.scaladsl.model._
+
+import whisk.common.AkkaLogging
+import whisk.core.entity.{ActivationLogs, Identity, WhiskActivation}
+import whisk.core.containerpool.logging.ElasticSearchJsonProtocol._
+import whisk.core.ConfigKeys
+
+import scala.concurrent.Future
+import scala.concurrent.Promise
+import scala.util.Try
+
+import spray.json._
+
+import pureconfig._
+
+// Schema of logs in ES
+case class UserLogEntry(message: String, tenantId: String, stream: String, 
time: String, action: String)
+
+object UserLogEntry extends DefaultJsonProtocol {
+  implicit val serdes =
+    jsonFormat(UserLogEntry.apply, "message", "ALCH_TENANT_ID", "stream_str", 
"time_date", "action_str")
+}
+
+case class ElasticSearchLogStoreConfig(protocol: String,
+                                       host: String,
+                                       port: Int,
+                                       logMessageField: String,
+                                       activationIdField: String,
+                                       requiredHeaders: String)
+
+/**
+ * Docker based implementation of a LogStore.
+ *
+ * Relies on docker's implementation details with regards to the JSON 
log-driver. When using the JSON log-driver
+ * docker writes stdout/stderr to a JSON formatted file which is read by this 
store. Logs are written in the
+ * activation record itself.
+ *
+ * Additionally writes logs to a separate file which can be processed by any 
backend service asynchronously.
+ */
+class ElasticSearchLogStore(
+  system: ActorSystem,
+  httpFlow: Option[Flow[(HttpRequest, Promise[HttpResponse]), 
(Try[HttpResponse], Promise[HttpResponse]), Any]] = None,
+  destinationDirectory: Path = Paths.get("logs"),
+  elasticSearchConfig: ElasticSearchLogStoreConfig =
+    loadConfigOrThrow[ElasticSearchLogStoreConfig](ConfigKeys.elasticSearch))
+    extends DockerToActivationFileLogStore(system, destinationDirectory) {
+
+  implicit val actorSystem = system
 
 Review comment:
   Which of these fields need to be public?

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