Initial commit.
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ae1aeed
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+src/main/resources/application.conf
+project/target
+target
+*.swp
+.classpath
+.project
+.settings
+bin
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000..a2fe52f
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,202 @@
+
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+
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+ Copyright 2015-2016 IBM Corporation
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+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
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+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
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+ See the License for the specific language governing permissions and
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diff --git a/README.md b/README.md
new file mode 100644
index 0000000..19e9cd7
--- /dev/null
+++ b/README.md
@@ -0,0 +1,30 @@
+# Slackbot for OpenWhisk
+
+This repository contains proof-of-concept-quality code to deploy a Slackbot with the capability to run [OpenWhisk](https://github.com/openwhisk/openwhisk) actions.
+
+## Setup
+
+1. Copy `src/main/resources/application.conf.template` to `src/main/resources/application.conf` and fill in the credentials as indicated in the comments.
+
+2. Run `slack.whisk.Main`.
+
+You can run either from `sbt` directly, or use `sbt eclipse` to generate an Eclipse project and create a run configuration from there.
+
+## Usage
+
+(Assuming your bot is called `@whiskbot`.)
+
+Send a run command either as a direct message, or using a mention in a channel where the bot was invited:
+
+ @whiskbot: please run this for me:
+ ```function main(args) {
+ return { "greeting": "Hello " + args.name + "!" };
+ }```
+ ```{ "name" : "visitor" }```
+
+The message needs to contain the keywords "run", "please", and two triple-quoted blocks; one for the JavaScript code, and one for the action payload.
+
+## Caveat emptor
+
+* The bot currently only supports JavaScript actions.
+* The bot will stop if the websocket connection is lost.
diff --git a/build.sbt b/build.sbt
new file mode 100644
index 0000000..507d05e
--- /dev/null
+++ b/build.sbt
@@ -0,0 +1,13 @@
+name := "slack-whisk"
+
+scalaVersion := "2.11.8"
+
+libraryDependencies ++= Seq(
+ "com.typesafe.akka" %% "akka-actor" % "2.4.8",
+ "com.typesafe.akka" %% "akka-http-core" % "2.4.8",
+ "com.typesafe.akka" %% "akka-http-experimental" % "2.4.8",
+ "com.typesafe.akka" %% "akka-http-spray-json-experimental" % "2.4.8",
+ "com.typesafe.akka" %% "akka-stream" % "2.4.8"
+)
+
+libraryDependencies += "com.github.gilbertw1" %% "slack-scala-client" % "0.1.7"
diff --git a/project/plugins.sbt b/project/plugins.sbt
new file mode 100644
index 0000000..737941d
--- /dev/null
+++ b/project/plugins.sbt
@@ -0,0 +1 @@
+addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "4.0.0")
diff --git a/src/main/resources/application.conf.template b/src/main/resources/application.conf.template
new file mode 100644
index 0000000..4a6ebe7
--- /dev/null
+++ b/src/main/resources/application.conf.template
@@ -0,0 +1,13 @@
+slack {
+ // The API token shown on the Slack "Integration Settings" page.
+ bot.token = "xaxb-01234567890-..."
+}
+
+whisk {
+ // Your OpenWhisk credentials. Same as in your ~/.wskprops file.
+ credentials {
+ apihost = "openwhisk.ng.bluemix.net"
+ namespace = "example@example.com_dev"
+ auth = "....:...."
+ }
+}
diff --git a/src/main/scala/slack/whisk/ActionRunnerBot.scala b/src/main/scala/slack/whisk/ActionRunnerBot.scala
new file mode 100644
index 0000000..340c872
--- /dev/null
+++ b/src/main/scala/slack/whisk/ActionRunnerBot.scala
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2015-2016 IBM Corporation
+ *
+ * Licensed 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 slack.whisk
+
+import slack.whisk.util.JsParser
+
+import scala.util.Try
+
+import akka.actor.ActorSystem
+
+import spray.json._
+import spray.json.DefaultJsonProtocol._
+
+/* Listen to private messages and mentions, and if they contain the keywords "run" and "please",
+ * attempts to parse message as action code and action payload and create+run the action on the
+ * configured Whisk deployment.
+ */
+class ActionRunnerBot(send: JsObject=>Unit, botInfo: SlackRTMBotInfo)(implicit val actorSystem: ActorSystem) extends SlackBot(send) {
+ private implicit val executionContext = actorSystem.dispatcher
+
+ private val whiskClient = new WhiskClient()
+
+ override def onMessage(msg: JsObject) : Unit = msg.fields("type").convertTo[String] match {
+ case "message" =>
+ handleMessage(msg
+ .fields("text").convertTo[String]
+ .replaceAll("“", "\"")
+ .replaceAll("”", "\"")
+ , msg)
+
+ case _ =>
+ }
+
+ private def handleMessage(text: String, msg: JsObject) : Unit = {
+ val channel = msg.fields("channel").convertTo[String]
+ val sender = msg.fields("user").convertTo[String]
+
+ val shouldConsider = channel.startsWith("D") || text.contains(s"<@${botInfo.selfId}>")
+
+ if(!shouldConsider)
+ return
+
+ if(text.contains("run") && text.contains("please")) {
+ val codeBlockPattern = """```([^`]+)```""".r
+
+ val matches = codeBlockPattern.findAllIn(text).map(s => s.substring(3, s.length - 3)).toList
+
+ if(matches.length != 2) {
+ sendMessage(channel, s"Sorry, <@$sender>, I'd love to run your action but this requires exactly two code blocks (one for the JS code, one for the `args` JSON object).")
+ return
+ }
+
+ val codeStr = matches(0)
+ val argsStr = matches(1)
+
+ val parseResult = JsParser.parse(codeStr)
+ if(parseResult.isLeft) {
+ sendMessage(channel, s"Sorry, <@$sender>, I couldn't parse your JavaScript code:\n```${parseResult.left.get}```")
+ return
+ }
+
+ val args = Try(JsonParser(argsStr).asJsObject)
+
+ if(args.isFailure) {
+ sendMessage(channel, s"Sorry, <@$sender>, I couldn't parse your second code block as a JSON object.")
+ return
+ }
+
+ sendMessage(channel, "Creating action...")
+ whiskClient.createJsAction("slack-action", codeStr).map { obj =>
+ val name = obj.fields("name").convertTo[String]
+ sendMessage(channel, "Invoking action...")
+ whiskClient.invokeAction(name, args.get).map { res =>
+ sendMessage(channel, s"```${res.prettyPrint}```")
+ sendMessage(channel, s"There you go, <@$sender>.")
+ }.recover { case f =>
+ sendMessage(channel, s"Sorry, <@$sender>, action invocation failed with: `${f.getMessage}`.")
+ }.andThen { case _ =>
+ whiskClient.deleteAction(name)
+ }
+ }.recover { case f =>
+ sendMessage(channel, s"Sorry, <@$sender>, action creation failed with: `${f.getMessage}`.")
+ }
+ }
+ }
+
+ private def sendMessage(channel: String, text: String) : Unit = {
+ send(JsObject(
+ "type" -> JsString("message"),
+ "channel" -> JsString(channel),
+ "text" -> JsString(text)
+ ))
+ }
+}
diff --git a/src/main/scala/slack/whisk/Main.scala b/src/main/scala/slack/whisk/Main.scala
new file mode 100644
index 0000000..a023f7c
--- /dev/null
+++ b/src/main/scala/slack/whisk/Main.scala
@@ -0,0 +1,136 @@
+/*
+ * Copyright 2015-2016 IBM Corporation
+ *
+ * Licensed 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 slack.whisk
+
+import scala.concurrent.Await
+import scala.concurrent.Future
+import scala.concurrent.Promise
+import scala.concurrent.duration._
+
+import akka.Done
+import akka.NotUsed
+import akka.actor.ActorSystem
+import akka.http.scaladsl.Http
+import akka.http.scaladsl.model._
+import akka.http.scaladsl.model.ws._
+import akka.http.scaladsl.unmarshalling._
+import akka.http.scaladsl.marshallers.sprayjson.SprayJsonSupport._
+import akka.stream.ActorMaterializer
+import akka.stream.OverflowStrategy
+import akka.stream.QueueOfferResult
+import akka.stream.scaladsl._
+
+import spray.json._
+import spray.json.DefaultJsonProtocol._
+
+import java.util.concurrent.atomic.AtomicInteger
+
+object Main {
+ def main(args : Array[String]) : Unit = {
+ implicit val system = ActorSystem()
+ implicit val executionContext = system.dispatcher
+ implicit val materializer = ActorMaterializer()
+
+ val config = system.settings.config
+
+ val token = config.getString("slack.bot.token")
+
+ val rtmInfo = Await.result(SlackRTM.start(token), Duration.Inf)
+
+ val botInfo = SlackRTMBotInfo(rtmInfo.selfId)
+
+ val queuePromise = Promise[SourceQueue[Message]]
+ val msgSource = Source.queue[Message](10, OverflowStrategy.dropNew).mapMaterializedValue { q =>
+ queuePromise.trySuccess(q)
+ }
+ val futureQueue = queuePromise.future
+ val outgoingMsgCounter = new AtomicInteger(1)
+ val send: JsObject=>Unit = { msg =>
+ futureQueue.onSuccess { case q =>
+ val msgId = outgoingMsgCounter.getAndIncrement()
+ val msgExt = JsObject(msg.fields + ("id" -> JsNumber(msgId)))
+ println("Sending : " + msgExt.toString)
+ q.offer(TextMessage(msgExt.toString)).map { _ match {
+ case QueueOfferResult.Enqueued =>
+ // fire-and-forget
+
+ case QueueOfferResult.Dropped =>
+ println("Message was dropped. Queue is full.")
+
+ case QueueOfferResult.QueueClosed =>
+ println("Queue is closed.")
+
+ case QueueOfferResult.Failure(f) =>
+ println("Queue failed: " + f.getMessage)
+ }}
+ }
+ }
+
+ val bots: List[SlackBot] = List(
+ new ActionRunnerBot(send, botInfo)
+ )
+
+ val msgSink: Sink[Message, Future[Done]] = Sink.foreach {
+ case message: TextMessage.Strict =>
+ try {
+ // FIXME this swallows all errors in all "bots"
+ val parsed = JsonParser(message.text).asJsObject
+ bots.foreach(b => b.onMessage(parsed))
+ } catch {
+ case t : Throwable =>
+ println("There was an error receiving messages: "+ t.getMessage())
+ println("Message was: " + message)
+ }
+
+ case x =>
+ println("Dropping message: " + x)
+ // drop it like it's hot
+ }
+
+ val flow: Flow[Message,Message,Future[Done]] =
+ Flow.fromSinkAndSourceMat(msgSink, msgSource)(Keep.left)
+
+ val (upgradeResponse, closed) =
+ Http().singleWebSocketRequest(WebSocketRequest(rtmInfo.wsUrl), flow)
+
+ val connected = upgradeResponse.map { upgrade =>
+ if(upgrade.response.status == StatusCodes.SwitchingProtocols) {
+ Done
+ } else {
+ throw new RuntimeException(s"Connection failed: ${upgrade.response.status}")
+ }
+ }
+
+ connected.onComplete(println)
+ closed.foreach { _ =>
+ println("Closed. Shutting down...")
+ shutItDown()
+ }
+
+ def shutItDown() = {
+ materializer.shutdown()
+ Await.ready(Http().shutdownAllConnectionPools(), Duration.Inf)
+ system.terminate()
+ Await.result(system.whenTerminated, Duration.Inf)
+ System.exit(0)
+ }
+
+ // Press Enter, everything stops.
+ scala.io.StdIn.readLine()
+ println("User input. Shutting down...")
+ shutItDown()
+ }
+}
diff --git a/src/main/scala/slack/whisk/SlackBot.scala b/src/main/scala/slack/whisk/SlackBot.scala
new file mode 100644
index 0000000..a8345f4
--- /dev/null
+++ b/src/main/scala/slack/whisk/SlackBot.scala
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2015-2016 IBM Corporation
+ *
+ * Licensed 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 slack.whisk
+
+import spray.json._
+
+// A very simple abstraction of a Slackbot "actor".
+abstract class SlackBot(val send: JsObject=>Unit) {
+ def onMessage(message: JsObject) : Unit
+}
diff --git a/src/main/scala/slack/whisk/SlackRTM.scala b/src/main/scala/slack/whisk/SlackRTM.scala
new file mode 100644
index 0000000..ac258df
--- /dev/null
+++ b/src/main/scala/slack/whisk/SlackRTM.scala
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2015-2016 IBM Corporation
+ *
+ * Licensed 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 slack.whisk
+
+import scala.concurrent.Future
+
+import akka.actor.ActorSystem
+import akka.http.scaladsl._
+import akka.http.scaladsl.model._
+import akka.http.scaladsl.unmarshalling._
+import akka.http.scaladsl.marshallers.sprayjson.SprayJsonSupport._
+import akka.stream.ActorMaterializer
+
+import spray.json._
+import spray.json.DefaultJsonProtocol._
+
+case class SlackRTMBotInfo(
+ selfId: String
+)
+
+case class SlackRTMInfo(
+ wsUrl: String,
+ selfId: String
+)
+
+object SlackRTM {
+ def start(token: String)(implicit system: ActorSystem) : Future[SlackRTMInfo] = {
+ implicit val executionContext = system.dispatcher
+ implicit val materializer = ActorMaterializer()
+
+ // Make an authenticated request to get the websocket endpoint and some more meta info.
+ val request = HttpRequest(
+ method = HttpMethods.GET,
+ uri = Uri()
+ .withScheme("https")
+ .withHost(Uri.Host("slack.com"))
+ .withPath(Uri.Path("/api/rtm.start"))
+ .withQuery(Uri.Query("token" -> token))
+ )
+
+ for(
+ response <- Http().singleRequest(request);
+ jsObject <- Unmarshal(response.entity).to[JsObject]
+ ) yield {
+ SlackRTMInfo(
+ jsObject.fields("url").convertTo[String],
+ jsObject.fields("self").convertTo[JsObject].fields("id").convertTo[String]
+ )
+ }
+ }
+}
diff --git a/src/main/scala/slack/whisk/WhiskClient.scala b/src/main/scala/slack/whisk/WhiskClient.scala
new file mode 100644
index 0000000..a00f8f1
--- /dev/null
+++ b/src/main/scala/slack/whisk/WhiskClient.scala
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2015-2016 IBM Corporation
+ *
+ * Licensed 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 slack.whisk
+
+import scala.concurrent.Future
+
+import akka.actor.ActorSystem
+import akka.http.scaladsl._
+import akka.http.scaladsl.model._
+import akka.http.scaladsl.model.headers._
+import akka.http.scaladsl.marshalling._
+import akka.http.scaladsl.unmarshalling._
+import akka.http.scaladsl.marshallers.sprayjson.SprayJsonSupport._
+import akka.stream.ActorMaterializer
+
+import spray.json._
+
+/* A minimal non-blocking OpenWhisk client.
+ * Currently supports only the endpoints required for the PoC Slackbot.
+ */
+class WhiskClient()(implicit val actorSystem: ActorSystem) {
+ implicit private val executionContext = actorSystem.dispatcher
+ implicit private val materializer = ActorMaterializer()
+
+ private val config = actorSystem.settings.config
+
+ private val apiHost = config.getString("whisk.credentials.apihost")
+ private val namespace = config.getString("whisk.credentials.namespace")
+ private val auth = config.getString("whisk.credentials.auth")
+ private val username = auth.split(":")(0)
+ private val password = auth.split(":")(1)
+
+ private def authenticatedRequest(
+ method: HttpMethod,
+ path: Uri.Path,
+ query: Uri.Query = Uri.Query.Empty,
+ entity: RequestEntity = HttpEntity.Empty) = HttpRequest(
+ method = method,
+ uri = Uri()
+ .withScheme("https")
+ .withHost(apiHost)
+ .withPath(path)
+ .withQuery(query),
+ headers = List(
+ Authorization(BasicHttpCredentials(username, password)),
+ Accept(MediaTypes.`application/json`)
+ ),
+ entity = entity
+ )
+
+ private def runRequest(futureRequest: Future[HttpRequest]) : Future[JsObject] = {
+ for(
+ request <- futureRequest;
+ response <- Http().singleRequest(request);
+ jsVal <- Unmarshal(response.entity).to[JsValue];
+ jsObj = jsVal.asJsObject
+ ) yield jsObj
+ }
+
+ def createJsAction(namePrefix: String, code: String) : Future[JsObject] = {
+ val actionName = s"${namePrefix.replaceAll("/", "-")}-${scala.util.Random.nextInt(999999)}"
+
+ val body = JsObject(
+ "exec" -> JsObject(
+ "kind" -> JsString("nodejs"),
+ "code" -> JsString(code)
+ )
+ )
+
+ runRequest(Marshal(body).to[MessageEntity].map { e =>
+ authenticatedRequest(
+ method = HttpMethods.PUT,
+ path = Uri.Path(s"/api/v1/namespaces/$namespace/actions/$actionName"),
+ entity = e
+ )
+ })
+ }
+
+ def invokeAction(name: String, args: JsObject) : Future[JsObject] = {
+ runRequest(Marshal(args).to[MessageEntity].map { e =>
+ authenticatedRequest(
+ method = HttpMethods.POST,
+ path = Uri.Path(s"/api/v1/namespaces/$namespace/actions/$name"),
+ query = Uri.Query("blocking" -> "true", "result" -> "true"),
+ entity = e
+ )
+ })
+ }
+
+ def deleteAction(name: String) : Future[JsObject] = {
+ runRequest(Future.successful(
+ authenticatedRequest(
+ method = HttpMethods.DELETE,
+ path = Uri.Path(s"/api/v1/namespaces/$namespace/actions/$name")
+ )
+ ))
+ }
+}
diff --git a/src/main/scala/slack/whisk/util/JsParser.scala b/src/main/scala/slack/whisk/util/JsParser.scala
new file mode 100644
index 0000000..2a1cb67
--- /dev/null
+++ b/src/main/scala/slack/whisk/util/JsParser.scala
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2015-2016 IBM Corporation
+ *
+ * Licensed 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 slack.whisk.util
+
+import scala.util.Try
+
+import jdk.nashorn.internal.parser.Parser
+import jdk.nashorn.internal.runtime._
+import jdk.nashorn.internal.runtime.options.Options
+
+import java.io.PrintWriter
+import java.io.StringWriter
+
+/* Relies on Java 8 internal JS engine to detect parse errors before the action
+ * is created.
+ */
+object JsParser {
+ def parse(code: String) : Either[String,Unit] = {
+ val options = new Options("nashorn")
+ val ctx = new Context(options, new ErrorManager(), Thread.currentThread.getContextClassLoader)
+ val src = Source.sourceFor("action-code", code)
+ val errorWriter = new StringWriter()
+ val errors = new ErrorManager(new PrintWriter(errorWriter))
+ val parser = new Parser(ctx.getEnv(), src, errors)
+
+ try {
+ parser.parse()
+ if(errors.hasErrors()) {
+ errorWriter.flush()
+ Left(errorWriter.getBuffer().toString())
+ } else {
+ Right(())
+ }
+ } catch {
+ case e: Throwable =>
+ Left(e.getMessage)
+ }
+ }
+}
