1 files changed, 44 insertions, 2 deletions
diff --git a/src/main/java/io/trygvis/async/QueueController.java b/src/main/java/io/trygvis/async/QueueController.java
index ea1c42d..863d6a5 100644
--- a/src/main/java/io/trygvis/async/QueueController.java
+++ b/src/main/java/io/trygvis/async/QueueController.java
@@ -1,6 +1,7 @@
 package io.trygvis.async;
 
 import io.trygvis.queue.QueueExecutor;
+import io.trygvis.queue.QueueService;
 import io.trygvis.queue.QueueSystem;
 import io.trygvis.queue.Task;
 import io.trygvis.queue.TaskEffect;
@@ -9,9 +10,15 @@ import org.slf4j.LoggerFactory;
 
 import java.sql.Connection;
 import java.sql.SQLException;
+import java.util.ArrayList;
 import java.util.List;
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorCompletionService;
+import java.util.concurrent.Future;
 import java.util.concurrent.ScheduledThreadPoolExecutor;
 
+import static io.trygvis.queue.QueueExecutor.TaskExecutionResult;
 import static io.trygvis.queue.QueueService.TaskExecutionRequest;
 import static io.trygvis.queue.Task.TaskState.NEW;
 
@@ -46,6 +53,38 @@ public class QueueController {
         this.queue = queue;
     }
 
+    public void executeTasks(final QueueService.TaskExecutionRequest req, final TaskEffect effect, final List<Task> tasks,
+                             ScheduledThreadPoolExecutor executor) {
+        ExecutorCompletionService<TaskExecutionResult> completionService = new ExecutorCompletionService<>(executor);
+
+        List<Future<TaskExecutionResult>> results = new ArrayList<>(tasks.size());
+
+        for (final Task task : tasks) {
+            results.add(completionService.submit(new Callable<TaskExecutionResult>() {
+                @Override
+                public TaskExecutionResult call() throws Exception {
+                    return queue.applyTask(effect, task);
+                }
+            }));
+        }
+
+        for (Future<TaskExecutionResult> result : results) {
+            while(!result.isDone()) {
+                try {
+                    result.get();
+                    break;
+                } catch (InterruptedException e) {
+                    if(shouldRun) {
+                        continue;
+                    }
+                } catch (ExecutionException e) {
+                    log.error("Unexpected exception.", e);
+                    break;
+                }
+            }
+        }
+    }
+
     private class QueueThread implements Runnable {
         public void run() {
             while (shouldRun) {
@@ -61,7 +100,7 @@ public class QueueController {
                     log.info("Found {} tasks on queue {}", tasks.size(), queue.queue.name);
 
                     if (tasks.size() > 0) {
-                        queue.executeTasks(req, taskEffect, tasks, executor);
+                        executeTasks(req, taskEffect, tasks, executor);
                     }
                 } catch (Throwable e) {
                     if (shouldRun) {
@@ -71,6 +110,7 @@ public class QueueController {
 
                 // If we found exactly the same number of tasks that we asked for, there is most likely more to go.
                 if (tasks != null && tasks.size() == req.chunkSize) {
+                    log.info("Got a full chunk, continuing directly.");
                     continue;
                 }
 
@@ -101,7 +141,7 @@ public class QueueController {
             throw new IllegalStateException("Already running");
         }
 
-        log.info("Starting thread for queue {} with poll interval = {}s", queue.queue.name, queue.queue.interval);
+        log.info("Starting thread for queue {} with poll interval = {}ms", queue.queue.name, queue.queue.interval);
 
         running = true;
         this.executor = executor;
@@ -120,6 +160,8 @@ public class QueueController {
 
         shouldRun = false;
 
+        // TODO: empty out the currently executing tasks.
+
         thread.interrupt();
         while (running) {
             try {