1 files changed, 82 insertions, 0 deletions
diff --git a/vespaclient-core/src/main/java/com/yahoo/feedhandler/ThreadedFeedAccess.java b/vespaclient-core/src/main/java/com/yahoo/feedhandler/ThreadedFeedAccess.java
new file mode 100644
index 00000000000..3ad3e0b7f42
--- /dev/null
+++ b/vespaclient-core/src/main/java/com/yahoo/feedhandler/ThreadedFeedAccess.java
@@ -0,0 +1,82 @@
+package com.yahoo.feedhandler;
+
+import com.yahoo.concurrent.ThreadFactoryFactory;
+import com.yahoo.document.Document;
+import com.yahoo.document.DocumentId;
+import com.yahoo.document.DocumentUpdate;
+import com.yahoo.document.TestAndSetCondition;
+import com.yahoo.feedapi.SimpleFeedAccess;
+
+import java.util.concurrent.Executor;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.SynchronousQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+
+final class ThreadedFeedAccess implements SimpleFeedAccess {
+
+    private final SimpleFeedAccess simpleFeedAccess;
+    private final ExecutorService executorService;
+    private final Executor executor;
+    ThreadedFeedAccess(int numThreads, SimpleFeedAccess simpleFeedAccess) {
+        this.simpleFeedAccess = simpleFeedAccess;
+        if (numThreads <= 0) {
+            numThreads = Runtime.getRuntime().availableProcessors();
+        }
+        if (numThreads > 1) {
+            executorService = new ThreadPoolExecutor(numThreads, numThreads, 0L, TimeUnit.SECONDS,
+                    new SynchronousQueue<>(false),
+                    ThreadFactoryFactory.getDaemonThreadFactory("feeder"),
+                    new ThreadPoolExecutor.CallerRunsPolicy());
+            executor = executorService;
+        } else {
+            executorService = null;
+            executor = new Executor() {
+                @Override
+                public void execute(Runnable command) {
+                    command.run();
+                }
+            };
+        }
+    }
+    @Override
+    public void put(Document doc) {
+        executor.execute(() -> simpleFeedAccess.put(doc));
+    }
+
+    @Override
+    public void remove(DocumentId docId) {
+        executor.execute(() -> simpleFeedAccess.remove(docId));
+    }
+
+    @Override
+    public void update(DocumentUpdate update) {
+        executor.execute(() -> simpleFeedAccess.update(update));
+    }
+
+    @Override
+    public void put(Document doc, TestAndSetCondition condition) {
+        executor.execute(() -> simpleFeedAccess.put(doc, condition));
+    }
+
+    @Override
+    public void remove(DocumentId docId, TestAndSetCondition condition) {
+        executor.execute(() -> simpleFeedAccess.remove(docId, condition));
+    }
+
+    @Override
+    public void update(DocumentUpdate update, TestAndSetCondition condition) {
+        executor.execute(() -> simpleFeedAccess.update(update, condition));
+    }
+
+    @Override
+    public boolean isAborted() {
+        return simpleFeedAccess.isAborted();
+    }
+    @Override
+    public void close() {
+        if (executorService != null) {
+            executorService.shutdown();
+        }
+    }
+}