Started work on abstracting out the messaging in the engine. Moving over to dedicated actor(s) for handling messages and progress.

src/main/java/com/sothr/imagetools/AppCLI.java

@@ -1,5 +1,8 @@
 package com.sothr.imagetools;
 
+import akka.actor.ActorRef;
+import akka.actor.ActorSystem;
+import akka.actor.Props;
 import com.sothr.imagetools.image.SimilarImages;
 import org.apache.commons.cli.*;
 import org.slf4j.Logger;
@@ -40,31 +43,73 @@ class AppCLI {
   private static Options getOptions() {
     //scan a list of directories
     Options options = new Options();
-    options.addOption(new Option("s", true, "scan directories for a list of similar images"));
+
+    //show help
+    Option helpOption = OptionBuilder.create('h');
+    helpOption.setLongOpt("help");
+    helpOption.setDescription("Display this help dialog");
+    options.addOption(helpOption);
+
+    //scan directories
+    Option scanOption = OptionBuilder.create('s');
+    scanOption.setLongOpt("scan");
+    scanOption.setDescription("Scan directories for a list of similar images");
+    scanOption.setArgs(1);
+    scanOption.setArgName("DIRECTORY");
+    options.addOption(scanOption);
+
     //scan directories in a recursive manner
-    options.addOption(new Option("r", false, "scan directories recursively"));
+    Option recursiveOption = OptionBuilder.create('r');
+    recursiveOption.setLongOpt("recursive");
+    recursiveOption.setDescription("Scan directories recursively");
+    options.addOption(recursiveOption);
+
+    //depth limit
+    Option depthOption = OptionBuilder.create('d');
+    depthOption.setLongOpt("depth");
+    depthOption.setDescription("Limit the maximum depth of the recursive search");
+    depthOption.setArgs(1);
+    depthOption.setArgName("INTEGER");
+    options.addOption(depthOption);
     return options;
   }
 
   private static void process(CommandLine cmd) {
     //scan a comma separated list of paths to search for image similarities
-    Engine engine = new ConcurrentEngine();
-    if (cmd.hasOption('s')) {
-      Boolean recursive = false;
-      Integer recursiveDepth = 500;
-      if (cmd.hasOption('r')) {
-          recursive = true;
-      } 
-      String scanList = cmd.getOptionValue('s');
-      String[] paths = scanList.split(",");
-      for (String path : paths) {
-        List<SimilarImages> similarImages = engine.getSimilarImagesForDirectory(path, recursive, recursiveDepth);
-        for (int index = 0; index < similarImages.length(); index++) {
-          SimilarImages similar = similarImages.apply(index);
-          System.out.println(similar.toString());
+    try {
+      Engine engine = new ConcurrentEngine();
+
+      //create the listeners that will be passed onto the actors
+      ActorSystem system = AppConfig.getAppActorSystem();
+      Props cliListenerProps = Props.create(CLIEngineListener.class);
+      ActorRef cliListener = system.actorOf(cliListenerProps);
+
+      //set the listeners
+      engine.setProcessedListener(cliListener);
+      engine.setSimilarityListener(cliListener);
+
+
+      if (cmd.hasOption('s')) {
+        Boolean recursive = false;
+        Integer recursiveDepth = 500;
+        if (cmd.hasOption('r')) {
+            recursive = true;
+        }
+        if (cmd.hasOption('d')) {
+          recursiveDepth = Integer.parseInt(cmd.getOptionValue('d'));
+        }
+        String scanList = cmd.getOptionValue('s');
+        String[] paths = scanList.split(",");
+        for (String path : paths) {
+          List<SimilarImages> similarImages = engine.getSimilarImagesForDirectory(path, recursive, recursiveDepth);
+          for (int index = 0; index < similarImages.length(); index++) {
+            SimilarImages similar = similarImages.apply(index);
+            System.out.println(similar.toString());
+          }
         }
       }
+    } catch (Exception ex) {
+      throw new IllegalArgumentException("One or more arguments could not be parsed correctly", ex);
     }
   }
-
 }

src/main/java/com/sothr/imagetools/AppConfig.java

@@ -1,5 +1,6 @@
 package com.sothr.imagetools;
 
+import akka.actor.ActorSystem;
 import com.sothr.imagetools.dao.HibernateUtil;
 import com.sothr.imagetools.util.ResourceLoader;
 import com.sothr.imagetools.util.PropertiesService;
@@ -34,6 +35,13 @@ public class AppConfig {
   //Cache defaults
   private static Boolean configuredCache = false;
 
+  // General Akka Actor System
+  private static ActorSystem appSystem = ActorSystem.create("ITActorSystem");
+
+  public static ActorSystem getAppActorSystem() {
+    return appSystem;
+  }
+
   public static void configureApp() {
     logger = (Logger)LoggerFactory.getLogger(AppConfig.class);
     loadProperties();

src/main/scala/com/sothr/imagetools/ConcurrentEngine.scala

@@ -1,7 +1,7 @@
 package com.sothr.imagetools
 
 import java.io.File
-import akka.actor.{Actor, ActorSystem, Props, ActorLogging}
+import akka.actor._
 import akka.routing.{Broadcast, RoundRobinRouter, SmallestMailboxRouter}
 import akka.pattern.ask
 import akka.util.Timeout
@@ -11,14 +11,21 @@ import com.sothr.imagetools.hash.HashService
 import com.sothr.imagetools.util.{PropertiesEnum, PropertiesService}
 import scala.concurrent.Await
 import java.lang.Thread
-import scala.concurrent.ExecutionContext.Implicits.global
 import scala.collection.mutable
+import akka.routing.Broadcast
 
 class ConcurrentEngine extends Engine with grizzled.slf4j.Logging {
-    val system = ActorSystem("EngineActorSystem")
-    val engineProcessingController = system.actorOf(Props[ConcurrentEngineProcessingController], name = "EngineProcessingController")
-    val engineSimilarityController = system.actorOf(Props[ConcurrentEngineSimilarityController], name = "EngineSimilarityController")
-    implicit val timeout = Timeout(30, TimeUnit.SECONDS)
+  val engineProcessingController = system.actorOf(Props[ConcurrentEngineProcessingController], name = "EngineProcessingController")
+  val engineSimilarityController = system.actorOf(Props[ConcurrentEngineSimilarityController], name = "EngineSimilarityController")
+  implicit val timeout = Timeout(30, TimeUnit.SECONDS)
+
+  override def setProcessedListener(listenerRef: ActorRef) = {
+    engineProcessingController ! SetNewListener(listenerRef)
+  }
+
+  override def setSimilarityListener(listenerRef: ActorRef) = {
+    engineSimilarityController ! SetNewListener(listenerRef)
+  }
 
   def getImagesForDirectory(directoryPath:String, recursive:Boolean=false, recursiveDepth:Int=500):List[Image] = {
     debug(s"Looking for images in directory: $directoryPath")
@@ -104,7 +111,9 @@ class ConcurrentEngine extends Engine with grizzled.slf4j.Logging {
 }
 
 
-// exeternal cases //
+// external cases //
+case class SetNewListener(listenerType: ActorRef)
+
 // processing files into images
 case class EngineProcessFile(file:File)
 case object EngineNoMoreFiles
@@ -131,6 +140,15 @@ class ConcurrentEngineProcessingController extends Actor with ActorLogging {
     var processed = 0
     
     var processorsFinished = 0
+    var listener = context.actorOf(Props[DefaultLoggingEngineListener],
+      name = "ProcessedEngineListener")
+
+    def setListener(newListener: ActorRef) = {
+      //remove the old listener
+      this.listener ! PoisonPill
+      //setup the new listener
+      this.listener = newListener
+    }
 
     override def preStart() = {
         log.info("Staring the controller for processing images")
@@ -138,6 +156,7 @@ class ConcurrentEngineProcessingController extends Actor with ActorLogging {
     }
     
     override def receive = {
+        case command:SetNewListener => setListener(command.listenerType)
         case command:EngineProcessFile => processFile(command)
         case command:EngineFileProcessed => fileProcessed(command)
         case EngineNoMoreFiles => requestWrapup()
@@ -147,6 +166,11 @@ class ConcurrentEngineProcessingController extends Actor with ActorLogging {
         case _ => log.info("received unknown message")
     }
 
+    override def postStop() = {
+      super.postStop()
+      this.listener ! PoisonPill
+    }
+    
     def processFile(command:EngineProcessFile) = {
         log.debug(s"Started evaluating ${command.file.getAbsolutePath}")
         toProcess += 1
@@ -155,7 +179,10 @@ class ConcurrentEngineProcessingController extends Actor with ActorLogging {
     
     def fileProcessed(command:EngineFileProcessed) = {
         processed += 1
-        if (processed % 25 == 0 || processed == toProcess) log.info(s"Processed $processed/$toProcess")
+        if (processed % 25 == 0 || processed == toProcess) {
+          //log.info(s"Processed $processed/$toProcess")
+          listener ! ComparedFileCount(processed,toProcess)
+        }
         if (command.image != null) {
             log.debug(s"processed image: ${command.image.imagePath}")
             images += command.image
@@ -256,12 +283,23 @@ class ConcurrentEngineSimilarityController extends Actor with ActorLogging {
 
   var processorsFinished = 0
 
+  var listener = context.actorOf(Props[DefaultLoggingEngineListener],
+    name = "SimilarityEngineListener")
+
+  def setListener(newListener: ActorRef) = {
+    //remove the old listener
+    this.listener ! PoisonPill
+    //setup the new listener
+    this.listener = newListener
+  }
+
   override def preStart() = {
-    log.info("Staring the controller for processing similarites between images")
-    log.info("Using {} actors to process image similarites", numOfRouters)
+    log.info("Staring the controller for processing similarities between images")
+    log.info("Using {} actors to process image similarities", numOfRouters)
   }
 
   override def receive = {
+    case command:SetNewListener => setListener(command.listenerType)
     case command:EngineCompareImages => findSimilarities(command)
     case command:EngineCompareImagesComplete => similarityProcessed(command)
     case EngineNoMoreComparisons => requestWrapup()
@@ -271,12 +309,17 @@ class ConcurrentEngineSimilarityController extends Actor with ActorLogging {
     case _ => log.info("received unknown message")
   }
 
+  override def postStop() = {
+    super.postStop()
+    this.listener ! PoisonPill
+  }
 
   def findSimilarities(command:EngineCompareImages) = {
     log.debug(s"Finding similarities between {} and {} images", command.image1.imagePath, command.images.length)
     toProcess += 1
     if (toProcess % 250 == 0) {
-        log.info("Sent {} images to be processed for similarites", toProcess)
+        //log.info("Sent {} images to be processed for similarites", toProcess)
+        listener ! SubmitMessage(s"Sent $toProcess images to be processed for similarites")
     }
     //just relay the command to our workers
     router ! command
@@ -284,7 +327,10 @@ class ConcurrentEngineSimilarityController extends Actor with ActorLogging {
 
   def similarityProcessed(command:EngineCompareImagesComplete) = {
     processed += 1
-    if (processed % 25 == 0 || processed == toProcess) log.info(s"Processed $processed/$toProcess")
+    if (processed % 25 == 0 || processed == toProcess) {
+      //log.info(s"Processed $processed/$toProcess")
+      listener ! ScannedFileCount(processed,toProcess)
+    }
     if (command.similarImages != null) {
       log.debug(s"Found similar images: ${command.similarImages}")
       allSimilarImages += command.similarImages

src/main/scala/com/sothr/imagetools/Engine.scala

@@ -5,15 +5,19 @@ import com.sothr.imagetools.util.DirectoryFilter
 import scala.collection.mutable
 import java.io.File
 import grizzled.slf4j.Logging
+import akka.actor.{ActorRef, ActorSystem, ActorLogging, Actor}
 
 /**
  * Created by drew on 1/26/14.
  */
 abstract class Engine extends Logging{
-
+  val system = ActorSystem("EngineActorSystem")
   val imageFilter:ImageFilter = new ImageFilter()
   val imageCache = AppConfig.cacheManager.getCache("images")
 
+  def setProcessedListener(listenerType: ActorRef)
+  def setSimilarityListener(listenerType: ActorRef)
+
   def getAllImageFiles(directoryPath:String, recursive:Boolean=false, recursiveDepth:Int=500):List[File] = {
     val fileList = new mutable.MutableList[File]()
     if (directoryPath != null && directoryPath != "") {
@@ -47,3 +51,65 @@ abstract class Engine extends Logging{
    */
   def getSimilarImagesForDirectory(directoryPath:String, recursive:Boolean=false, recursiveDepth:Int=500):List[SimilarImages];
 }
+
+case class SubmitMessage(message:String)
+case class ScannedFileCount(count:Integer, total:Integer, message:String=null)
+case class ComparedFileCount(count:Integer,total:Integer, message:String=null)
+abstract class EngineListener extends Actor with ActorLogging {
+  override def receive: Actor.Receive = {
+    case command:SubmitMessage => handleMessage(command)
+    case command:ScannedFileCount => handleScannedFileCount(command)
+    case command:ComparedFileCount => handleComparedFileCount(command)
+    case _ => log.info("received unknown message")
+  }
+
+  def handleMessage(command:SubmitMessage)
+  def handleScannedFileCount(command:ScannedFileCount)
+  def handleComparedFileCount(command:ComparedFileCount)
+}
+
+/**
+ * Actor for logging output information
+ */
+class DefaultLoggingEngineListener extends EngineListener with ActorLogging {
+  override def handleComparedFileCount(command: ComparedFileCount): Unit = {
+    if (command.message != null) {
+      log.info(command.message)
+    }
+    log.info("Processed {}/{}",command.count,command.total)
+  }
+
+  override def handleScannedFileCount(command: ScannedFileCount): Unit = {
+    if (command.message != null) {
+      log.info(command.message)
+    }
+    log.info("Scanned {}/{} For Similarities",command.count,command.total)
+  }
+
+  override def handleMessage(command: SubmitMessage): Unit = {
+    log.info(command.message)
+  }
+}
+
+/**
+ * Actor for writing progress out to the commandline
+ */
+class CLIEngineListener extends EngineListener with ActorLogging {
+  override def handleComparedFileCount(command: ComparedFileCount): Unit = {
+    if (command.message != null) {
+      System.out.println(command.message)
+    }
+    System.out.println(s"Processed ${command.count}/${command.total}")
+  }
+
+  override def handleScannedFileCount(command: ScannedFileCount): Unit = {
+    if (command.message != null) {
+      System.out.println(command.message)
+    }
+    System.out.println(s"Scanned ${command.count}/${command.total} For Similarities")
+  }
+
+  override def handleMessage(command: SubmitMessage): Unit = {
+    System.out.println(command.message)
+  }
+}

src/main/scala/com/sothr/imagetools/SequentialEngine.scala

@@ -4,12 +4,26 @@ import com.sothr.imagetools.image.{SimilarImages, ImageFilter, Image}
 import scala.collection.mutable
 import java.io.File
 import grizzled.slf4j.Logging
+import akka.actor.{ActorRef, Props}
 
 /**
  * Created by drew on 1/26/14.
  */
 class SequentialEngine extends Engine with Logging {
 
+  var processedListener = system.actorOf(Props[DefaultLoggingEngineListener],
+    name = "ProcessedEngineListener")
+  var similarityListener = system.actorOf(Props[DefaultLoggingEngineListener],
+    name = "SimilarityEngineListener")
+
+  override def setProcessedListener(listenerRef: ActorRef) = {
+    this.processedListener = listenerRef
+  }
+
+  override def setSimilarityListener(listenerRef: ActorRef) = {
+    this.similarityListener = listenerRef
+  }
+
   def getImagesForDirectory(directoryPath:String, recursive:Boolean=false, recursiveDepth:Int=500):List[Image] = {
     debug(s"Looking for images in directory: $directoryPath")
     val images:mutable.MutableList[Image] = new mutable.MutableList[Image]()
@@ -18,7 +32,10 @@ class SequentialEngine extends Engine with Logging {
     var count = 0
     for (file <- imageFiles) {
       count += 1
-      if (count % 25 == 0) info(s"Processed ${count}/${imageFiles.size}")
+      if (count % 25 == 0) {
+        //info(s"Processed ${count}/${imageFiles.size}")
+        processedListener ! ScannedFileCount(count,imageFiles.size)
+      }
       val image = ImageService.getImage(file)
       if (image != null) {
         images += image
@@ -38,7 +55,9 @@ class SequentialEngine extends Engine with Logging {
     for (rootImage <- images) {
       if (!ignoreSet.contains(rootImage)) {
         if (processedCount % 25 == 0) {
-            info(s"Processed ${processedCount}/${images.length - ignoreSet.size} About ${images.length - processedCount} images to go")
+            //info(s"Processed ${processedCount}/${images.length - ignoreSet.size} About ${images.length -
+            //    processedCount} images to go")
+            similarityListener ! ScannedFileCount(processedCount,images.length-ignoreSet.size)
         }
         debug(s"Looking for images similar to: ${rootImage.imagePath}")
         ignoreSet += rootImage