Refactor transport-http response delivery

[netconf.git] / transport / transport-http / src / main / java / org / opendaylight / netconf / transport / http / ClientRequestDispatcher.java

diff --git a/transport/transport-http/src/main/java/org/opendaylight/netconf/transport/http/ClientRequestDispatcher.java b/transport/transport-http/src/main/java/org/opendaylight/netconf/transport/http/ClientRequestDispatcher.java
new file mode 100644 (file)
index 0000000..f6ae88d
--- /dev/null
+++ b/transport/transport-http/src/main/java/org/opendaylight/netconf/transport/http/ClientRequestDispatcher.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2024 PANTHEON.tech, s.r.o. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.netconf.transport.http;
+
+import static java.util.Objects.requireNonNull;
+
+import com.google.common.util.concurrent.FutureCallback;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.SimpleChannelInboundHandler;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.handler.codec.http.FullHttpResponse;
+import org.eclipse.jdt.annotation.NonNull;
+
+abstract class ClientRequestDispatcher extends SimpleChannelInboundHandler<FullHttpResponse>
+        implements RequestDispatcher {
+    private Channel channel = null;
+
+    @Override
+    public void handlerAdded(final ChannelHandlerContext ctx) throws Exception {
+        channel = ctx.channel();
+        super.handlerAdded(ctx);
+    }
+
+    @Override
+    public final void dispatch(final FullHttpRequest request, final FutureCallback<FullHttpResponse> callback) {
+        final var local = channel;
+        if (local != null) {
+            dispatch(local, requireNonNull(request), requireNonNull(callback));
+        } else {
+            throw new IllegalStateException("Connection is not established yet");
+        }
+    }
+
+    abstract void dispatch(@NonNull Channel channel, @NonNull FullHttpRequest request,
+        @NonNull FutureCallback<FullHttpResponse> callback);
+}