ClientRequest增加transfer功能

src/main/java/org/redkale/net/client/Client.java

@@ -209,6 +209,13 @@ public abstract class Client<C extends ClientConnection<R, P>, R extends ClientR
         return connect(null).thenCompose(conn -> writeChannel(conn, request));
     }
 
+    public final <T> CompletableFuture<T> sendAsync(R request, Function<P, T> respTransfer) {
+        if (request.workThread == null) {
+            request.workThread = WorkThread.currWorkThread();
+        }
+        return connect(null).thenCompose(conn -> writeChannel(conn, request, respTransfer));
+    }
+
     public final CompletableFuture<P> sendAsync(ChannelContext context, R request) {
         if (request.workThread == null) {
             request.workThread = WorkThread.currWorkThread();
@@ -216,10 +223,21 @@ public abstract class Client<C extends ClientConnection<R, P>, R extends ClientR
         return connect(context).thenCompose(conn -> writeChannel(conn, request));
     }
 
+    public final <T> CompletableFuture<T> sendAsync(ChannelContext context, R request, Function<P, T> respTransfer) {
+        if (request.workThread == null) {
+            request.workThread = WorkThread.currWorkThread();
+        }
+        return connect(context).thenCompose(conn -> writeChannel(conn, request, respTransfer));
+    }
+
     protected CompletableFuture<P> writeChannel(ClientConnection conn, R request) {
         return conn.writeChannel(request);
     }
 
+    protected <T> CompletableFuture<T> writeChannel(ClientConnection conn, R request, Function<P, T> respTransfer) {
+        return conn.writeChannel(request, respTransfer);
+    }
+
     protected CompletableFuture<C> connect() {
         return connect(null);
     }

src/main/java/org/redkale/net/client/ClientCodec.java

@@ -15,7 +15,7 @@ import org.redkale.net.*;
 import org.redkale.util.*;
 
 /**
- * 每个ClientConnection绑定一个独立的ClientCodec实例
+ * 每个ClientConnection绑定一个独立的ClientCodec实例, 只会同一读线程里运行
  *
  * <p>
  * 详情见: https://redkale.org
@@ -121,9 +121,10 @@ public abstract class ClientCodec<R extends ClientRequest, P> implements Complet
                         respFuture.completeExceptionally(exc);
                     });
                 } else {
+                    final Object rs = request.respTransfer == null ? message : request.respTransfer.apply(message);
                     workThread.runWork(() -> {
                         Traces.currTraceid(request.traceid);
-                        respFuture.complete(message);
+                        respFuture.complete(rs);
                     });
                 }
             } catch (Throwable t) {

src/main/java/org/redkale/net/client/ClientConnection.java

@@ -10,7 +10,7 @@ import java.nio.channels.ClosedChannelException;
 import java.util.*;
 import java.util.concurrent.*;
 import java.util.concurrent.atomic.*;
-import java.util.function.Consumer;
+import java.util.function.*;
 import org.redkale.net.*;
 
 /**
@@ -68,6 +68,12 @@ public abstract class ClientConnection<R extends ClientRequest, P> implements Co
     protected abstract ClientCodec createCodec();
 
     protected final CompletableFuture<P> writeChannel(R request) {
+        return writeChannel(request, null);
+    }
+
+    //respTransfer只会在ClientCodec的读线程里调用
+    protected final <T> CompletableFuture<T> writeChannel(R request, Function<P, T> respTransfer) {
+        request.respTransfer = respTransfer;
         ClientFuture respFuture = createClientFuture(request);
         int rts = this.channel.getReadTimeoutSeconds();
         if (rts > 0 && !request.isCloseType()) {
@@ -139,8 +145,8 @@ public abstract class ClientConnection<R extends ClientRequest, P> implements Co
         return channel;
     }
 
-    public ClientCodec<R, P> getCodec() {
-        return codec;
+    public <C extends ClientCodec<R, P>> C getCodec() {
+        return (C) codec;
     }
 
     public int getMaxPipelines() {

src/main/java/org/redkale/net/client/ClientRequest.java

@@ -6,6 +6,7 @@
 package org.redkale.net.client;
 
 import java.io.Serializable;
+import java.util.function.Function;
 import org.redkale.net.WorkThread;
 import org.redkale.util.*;
 
@@ -26,6 +27,9 @@ public abstract class ClientRequest {
 
     protected String traceid;
 
+    //只会在ClientCodec的读线程里调用
+    Function respTransfer;
+
     public abstract void writeTo(ClientConnection conn, ByteArray array);
 
     public Serializable getRequestid() {
@@ -55,6 +59,11 @@ public abstract class ClientRequest {
         return (T) this;
     }
 
+    public <T extends ClientRequest> T currTraceid(String traceid) {
+        this.traceid = traceid;
+        return (T) this;
+    }
+
     //数据是否全部写入，如果只写部分，返回false, 配合ClientConnection.pauseWriting使用
     protected boolean isCompleted() {
         return true;
@@ -63,11 +72,13 @@ public abstract class ClientRequest {
     protected void prepare() {
         this.createTime = System.currentTimeMillis();
         this.traceid = Traces.currTraceid();
+        this.respTransfer = null;
     }
 
     protected boolean recycle() {
         this.createTime = 0;
         this.traceid = null;
+        this.respTransfer = null;
         return true;
     }
 }