use java8 functional

did-common/src/main/java/io/github/ehlxr/did/common/Constants.java

@@ -43,4 +43,9 @@ public class Constants {
     public static String getEnv(String key) {
         return SYS_ENV.get(key) == null ? "" : SYS_ENV.get(key);
     }
+
+    /**
+     * 编码解码 byte 数组固定长度
+     */
+    public static int DECODER_FRAMELENGTH = 100;
 }

did-common/src/main/java/io/github/ehlxr/did/common/NettyUtil.java

@@ -5,6 +5,7 @@ import io.netty.channel.ChannelFutureListener;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.io.*;
 import java.net.SocketAddress;
 
 /**
@@ -39,4 +40,32 @@ public class NettyUtil {
                 logger.info("closeChannel: close the connection to remote address[{}] result: {}",
                         addrRemote, future.isSuccess()));
     }
+
+    public static byte[] toBytes(Object obj) throws IOException {
+        ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        ObjectOutputStream oos = new ObjectOutputStream(bos);
+        oos.writeObject(obj);
+        oos.flush();
+
+        byte[] bytes = bos.toByteArray();
+        if (bytes.length > Constants.DECODER_FRAMELENGTH) {
+            logger.error("bytes length should not bigger than {}", Constants.DECODER_FRAMELENGTH);
+            return null;
+        } else if (bytes.length < Constants.DECODER_FRAMELENGTH) {
+            byte[] result = new byte[Constants.DECODER_FRAMELENGTH];
+
+            // 如果长度不足，填充
+            System.arraycopy(bytes, 0, result, 0, bytes.length);
+            return result;
+        }
+
+        return bytes;
+    }
+
+    public static Object toObject(byte[] bts) throws IOException, ClassNotFoundException {
+        ByteArrayInputStream bis = new ByteArrayInputStream(bts);
+        ObjectInputStream ois = new ObjectInputStream(bis);
+
+        return ois.readObject();
+    }
 }

did-common/src/main/java/io/github/ehlxr/did/common/SdkProto.java

@@ -1,12 +1,14 @@
 package io.github.ehlxr.did.common;
 
+import java.io.Serializable;
 import java.util.concurrent.atomic.AtomicInteger;
 
 /**
  * @author ehlxr
  */
-public class SdkProto {
+public class SdkProto implements Serializable {
     private static final AtomicInteger REQUEST_ID = new AtomicInteger(0);
+    private static final long serialVersionUID = 8986093068588745760L;
 
     /**
      * 请求的ID

did-common/src/main/java/io/github/ehlxr/did/common/Try.java

@@ -0,0 +1,377 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright © 2020 xrv <xrg@live.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package io.github.ehlxr.did.common;
+
+import java.util.Objects;
+import java.util.Optional;
+import java.util.function.Consumer;
+
+/**
+ * 异常处理，简化 try catch
+ *
+ * @author ehlxr
+ * @since 2020-12-03 10:37.
+ */
+public interface Try {
+    /**
+     * 构建消费型（有入参，无返回）Tryable 对象
+     *
+     * @param consumer {@link ThrowableConsumer} 类型函数式接口
+     * @param <P>      入参类型
+     * @return {@link TryConsumer}
+     */
+    static <P> TryConsumer<P> of(ThrowableConsumer<? super P> consumer) {
+        return new TryConsumer<>(consumer);
+    }
+
+    /**
+     * 构建供给型（无入参，有返回）Tryable 对象
+     *
+     * @param supplier {@link ThrowableSupplier} 类型函数式接口
+     * @param <R>      返回值类型
+     * @return {@link TrySupplier}
+     */
+    static <R> TrySupplier<R> of(ThrowableSupplier<? extends R> supplier) {
+        return new TrySupplier<>(supplier);
+    }
+
+    /**
+     * 构建功能型（有入参，有返回）Tryable 对象
+     *
+     * @param function {@link ThrowableFunction} 类型函数式接口
+     * @param <P>      入参类型
+     * @param <R>      返回值类型
+     * @return {@link TryFunction}
+     */
+    static <P, R> TryFunction<P, R> of(ThrowableFunction<? super P, ? extends R> function) {
+        return new TryFunction<>(function);
+    }
+
+    /**
+     * 构建运行型（无入参，无返回）Tryable 对象
+     *
+     * @param runnable {@link ThrowableRunnable} 类型函数式接口
+     * @return {@link TryRunnable}
+     */
+    static TryRunnable of(ThrowableRunnable runnable) {
+        return new TryRunnable(runnable);
+    }
+
+    @FunctionalInterface
+    interface ThrowableConsumer<P> {
+        /**
+         * Performs this operation on the given argument.
+         *
+         * @param p the input argument
+         * @throws Throwable throwable
+         */
+        void accept(P p) throws Throwable;
+    }
+
+    @FunctionalInterface
+    interface ThrowableSupplier<R> {
+        /**
+         * Gets a result.
+         *
+         * @return a result
+         * @throws Throwable throwable
+         */
+        R get() throws Throwable;
+    }
+
+    @FunctionalInterface
+    interface ThrowableRunnable {
+        /**
+         * Performs this operation
+         *
+         * @throws Throwable throwable
+         */
+        void run() throws Throwable;
+    }
+
+    @FunctionalInterface
+    interface ThrowableFunction<P, R> {
+        /**
+         * Applies this function to the given argument.
+         *
+         * @param p the function argument
+         * @return the function result
+         * @throws Throwable throwable
+         */
+        R apply(P p) throws Throwable;
+    }
+
+    abstract class Tryable<C> {
+        Consumer<? super Throwable> throwConsumer;
+        ThrowableRunnable finallyRunnable;
+        ThrowableConsumer<? super Object> finallyConsumer;
+        Consumer<? super Throwable> finallyThrowConsumer;
+        C c;
+
+        /**
+         * 处理 finally
+         */
+        protected void doFinally() {
+            Optional.ofNullable(finallyRunnable).ifPresent(r -> {
+                try {
+                    r.run();
+                } catch (final Throwable e) {
+                    Optional.ofNullable(finallyThrowConsumer).ifPresent(tc -> tc.accept(e));
+                }
+            });
+        }
+
+        /**
+         * 处理带参数类型 finally
+         *
+         * @param p   入参
+         * @param <P> 入参类型
+         */
+        protected <P> void doFinally(P p) {
+            if (Objects.nonNull(finallyConsumer)) {
+                try {
+                    finallyConsumer.accept(p);
+                } catch (final Throwable e) {
+                    Optional.ofNullable(finallyThrowConsumer).ifPresent(tc -> tc.accept(e));
+                }
+            } else {
+                doFinally();
+            }
+        }
+
+        /**
+         * 如果有异常，调用自定义异常处理表达式
+         *
+         * @param throwableConsumer 自定义异常处理 lambda 表达式
+         * @return {@link C}
+         */
+        public C trap(Consumer<? super Throwable> throwableConsumer) {
+            Objects.requireNonNull(throwableConsumer, "No throwableConsumer present");
+            this.throwConsumer = throwableConsumer;
+            return c;
+        }
+
+        /**
+         * 自定义 finally 处理表达式
+         * <p>
+         * 注意：如果类型为 {@link TryConsumer}、{@link TryFunction} 并且已经调用 {@link #andFinally(ThrowableConsumer)} 则忽略
+         *
+         * @param finallyRunnable finally 处理 lambda 表达式
+         * @return {@link C}
+         */
+        public C andFinally(ThrowableRunnable finallyRunnable) {
+            Objects.requireNonNull(finallyRunnable, "No finallyRunnable present");
+            this.finallyRunnable = finallyRunnable;
+            return c;
+        }
+
+        /**
+         * 自定义 finally 处理表达式
+         * <p>
+         * 注意：只会对 {@link TryConsumer}、{@link TryFunction} 类型对象起作用
+         *
+         * @param finallyConsumer finally 处理 lambda 表达式
+         * @return {@link C}
+         */
+        public C andFinally(ThrowableConsumer<? super Object> finallyConsumer) {
+            Objects.requireNonNull(finallyConsumer, "No finallyConsumer present");
+            this.finallyConsumer = finallyConsumer;
+            return c;
+        }
+
+        /**
+         * 如果 finally 有异常，调用自定义异常处理表达式
+         *
+         * @param finallyThrowableConsumer 自定义异常处理 lambda 表达式
+         * @return {@link C}
+         */
+        public C finallyTrap(Consumer<? super Throwable> finallyThrowableConsumer) {
+            Objects.requireNonNull(finallyThrowableConsumer, "No finallyThrowableConsumer present");
+            this.finallyThrowConsumer = finallyThrowableConsumer;
+            return c;
+        }
+    }
+
+    class TryRunnable extends Tryable<TryRunnable> {
+        private final ThrowableRunnable runnable;
+
+        protected TryRunnable(ThrowableRunnable runnable) {
+            Objects.requireNonNull(runnable, "No runnable present");
+            this.runnable = runnable;
+
+            super.c = this;
+        }
+
+        /**
+         * 计算结果
+         */
+        public void run() {
+            try {
+                runnable.run();
+            } catch (final Throwable e) {
+                Optional.ofNullable(throwConsumer).ifPresent(tc -> tc.accept(e));
+            } finally {
+                doFinally();
+            }
+        }
+    }
+
+    class TrySupplier<R> extends Tryable<TrySupplier<R>> {
+        private final ThrowableSupplier<? extends R> supplier;
+
+        protected TrySupplier(ThrowableSupplier<? extends R> supplier) {
+            Objects.requireNonNull(supplier, "No supplier present");
+            this.supplier = supplier;
+
+            super.c = this;
+        }
+
+        /**
+         * 如果有异常返回默认值，否则返回计算结果
+         *
+         * @param r 指定默认值
+         * @return 实际值或默认值
+         */
+        public R get(R r) {
+            try {
+                return supplier.get();
+            } catch (final Throwable e) {
+                Optional.ofNullable(throwConsumer).ifPresent(tc -> tc.accept(e));
+                return r;
+            } finally {
+                doFinally();
+            }
+        }
+
+        /**
+         * 如果有异常返回 null，否则返回计算结果
+         *
+         * @return 实际值或 null
+         */
+        public R get() {
+            try {
+                return supplier.get();
+            } catch (final Throwable e) {
+                Optional.ofNullable(throwConsumer).ifPresent(tc -> tc.accept(e));
+                return null;
+            } finally {
+                doFinally();
+            }
+        }
+    }
+
+    class TryConsumer<P> extends Tryable<TryConsumer<P>> {
+        private final ThrowableConsumer<? super P> consumer;
+
+        protected TryConsumer(ThrowableConsumer<? super P> consumer) {
+            Objects.requireNonNull(consumer, "No consumer present");
+            this.consumer = consumer;
+
+            super.c = this;
+        }
+
+        /**
+         * 计算结果
+         *
+         * @param p 要计算的入参
+         */
+        public void accept(P p) {
+            try {
+                Objects.requireNonNull(p, "No accept param present");
+
+                consumer.accept(p);
+            } catch (final Throwable e) {
+                Optional.ofNullable(throwConsumer).ifPresent(tc -> tc.accept(e));
+            } finally {
+                // doFinally();
+                doFinally(p);
+            }
+        }
+    }
+
+    class TryFunction<P, R> extends Tryable<TryFunction<P, R>> {
+        private final ThrowableFunction<? super P, ? extends R> function;
+        private P p;
+
+        protected TryFunction(ThrowableFunction<? super P, ? extends R> function) {
+            Objects.requireNonNull(function, "No function present");
+            this.function = function;
+
+            super.c = this;
+        }
+
+        /**
+         * 传入要计算的入参
+         *
+         * @param p 要计算的入参
+         * @return {@link TryFunction}
+         */
+        public TryFunction<P, R> apply(P p) {
+            Objects.requireNonNull(p, "Apply param should not null");
+
+            this.p = p;
+            return this;
+        }
+
+        /**
+         * 如果有异常返回默认值，否则返回计算结果
+         *
+         * @param r 指定默认值
+         * @return 实际值或默认值
+         */
+        public R get(R r) {
+            try {
+                Objects.requireNonNull(function, "No apply param present");
+
+                return function.apply(p);
+            } catch (final Throwable e) {
+                Optional.ofNullable(throwConsumer).ifPresent(tc -> tc.accept(e));
+                return r;
+            } finally {
+                // doFinally();
+                doFinally(p);
+            }
+        }
+
+        /**
+         * 如果有异常返回 null，否则返回计算结果
+         *
+         * @return 实际值或 null
+         */
+        public R get() {
+            try {
+                Objects.requireNonNull(p, "No apply param present");
+
+                return function.apply(p);
+            } catch (final Throwable e) {
+                Optional.ofNullable(throwConsumer).ifPresent(tc -> tc.accept(e));
+                return null;
+            } finally {
+                // doFinally();
+                doFinally(p);
+            }
+        }
+    }
+}

did-sdk/src/main/java/io/github/ehlxr/did/client/AbstractClient.java

@@ -1,9 +1,6 @@
 package io.github.ehlxr.did.client;
 
-import io.github.ehlxr.did.common.Constants;
+import io.github.ehlxr.did.common.*;
-import io.github.ehlxr.did.common.NettyUtil;
-import io.github.ehlxr.did.common.Result;
-import io.github.ehlxr.did.common.SdkProto;
 import io.netty.bootstrap.Bootstrap;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelFuture;
@@ -14,6 +11,7 @@ import io.netty.channel.socket.nio.NioSocketChannel;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.util.Optional;
 import java.util.concurrent.Semaphore;
 import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.TimeUnit;
@@ -59,8 +57,8 @@ public abstract class AbstractClient implements Client {
             }
         });
 
-        bootstrap = new Bootstrap();
+        bootstrap = new Bootstrap()
-        bootstrap.group(workGroup)
+                .group(workGroup)
                 .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 5000)
                 // .option(ChannelOption.TCP_NODELAY, true)
                 // .option(ChannelOption.SO_KEEPALIVE, true)
@@ -70,13 +68,11 @@ public abstract class AbstractClient implements Client {
     @Override
     public void shutdown() {
         logger.info("SDK Client shutdowning......");
-        try {
+
-            if (workGroup != null) {
+        Optional.ofNullable(workGroup).ifPresent(wg ->
-                workGroup.shutdownGracefully().sync();
+                Try.<NioEventLoopGroup>of(w -> w.shutdownGracefully().sync())
-            }
+                        .trap(e -> logger.error("Client EventLoopGroup shutdown error.", e))
-        } catch (Exception e) {
+                        .accept(wg));
-            logger.error("Client EventLoopGroup shutdown error.", e);
-        }
 
         logger.info("SDK Client shutdown finish!");
     }
@@ -87,9 +83,12 @@ public abstract class AbstractClient implements Client {
         if (channel.isOpen() && channel.isActive()) {
             final SdkProto sdkProto = new SdkProto();
             final int rqid = sdkProto.getRqid();
-            try {
+
+            return Try.of(() -> {
                 final ResponseFuture responseFuture = new ResponseFuture(timeoutMillis, null, null);
                 REPONSE_MAP.put(rqid, responseFuture);
+
+                logger.debug("write {} to channel", sdkProto);
                 channel.writeAndFlush(sdkProto).addListener((ChannelFutureListener) channelFuture -> {
                     if (channelFuture.isSuccess()) {
                         //发送成功后立即跳出
@@ -101,18 +100,20 @@ public abstract class AbstractClient implements Client {
                     responseFuture.setCause(channelFuture.cause());
                     logger.error("send a request command to channel <{}> failed.", NettyUtil.parseRemoteAddr(channel));
                 });
+
                 // 阻塞等待响应
                 SdkProto proto = responseFuture.waitResponse(timeoutMillis);
                 if (null == proto) {
-                    return Result.fail("get result fail, addr is " + NettyUtil.parseRemoteAddr(channel) + responseFuture.getCause());
+                    String msg = String.format("get result from addr %s failed, cause by %s",
+                            NettyUtil.parseRemoteAddr(channel), responseFuture.getCause());
+
+                    logger.error(msg);
+                    return Result.<SdkProto>fail(msg);
                 }
                 return Result.success(proto);
-            } catch (Exception e) {
+            }).trap(e -> logger.error("sync invoke {} failed.", NettyUtil.parseRemoteAddr(channel), e))
-                logger.error("invokeSync fail, addr is " + NettyUtil.parseRemoteAddr(channel), e);
+                    .andFinally(() -> REPONSE_MAP.remove(rqid))
-                return Result.fail("invokeSync fail, addr is " + NettyUtil.parseRemoteAddr(channel) + e.getMessage());
+                    .get(Result.fail("failed to sync invoke " + NettyUtil.parseRemoteAddr(channel)));
-            } finally {
-                REPONSE_MAP.remove(rqid);
-            }
         } else {
             NettyUtil.closeChannel(channel);
             return Result.fail("channel " + NettyUtil.parseRemoteAddr(channel) + "is not active!");
@@ -128,7 +129,9 @@ public abstract class AbstractClient implements Client {
             if (asyncSemaphore.tryAcquire(timeoutMillis, TimeUnit.MILLISECONDS)) {
                 final ResponseFuture responseFuture = new ResponseFuture(timeoutMillis, invokeCallback, asyncSemaphore);
                 REPONSE_MAP.put(rqid, responseFuture);
-                try {
+
+                Try.of(() -> {
+                    logger.debug("write {} to channel", sdkProto);
                     channelFuture.channel().writeAndFlush(sdkProto).addListener(channelFuture -> {
                         if (channelFuture.isSuccess()) {
                             return;
@@ -141,18 +144,13 @@ public abstract class AbstractClient implements Client {
                         REPONSE_MAP.remove(rqid);
                         responseFuture.setCause(channelFuture.cause());
                         responseFuture.putResponse(null);
-
                         responseFuture.executeInvokeCallback();
                         responseFuture.release();
                     });
-                } catch (Exception e) {
+                }).trap(e -> {
                     responseFuture.release();
-                    String msg = String.format("send a request to channel <%s> Exception",
+                    logger.error("send a request to channel <{}> Exception", NettyUtil.parseRemoteAddr(channel), e);
-                            NettyUtil.parseRemoteAddr(channel));
+                }).run();
-
-                    logger.error(msg, e);
-                    throw new Exception(msg, e);
-                }
             } else {
                 String msg = String.format("invokeAsyncImpl tryAcquire semaphore timeout, %dms, waiting thread " +
                                 "nums: %d semaphoreAsyncValue: %d",

did-sdk/src/main/java/io/github/ehlxr/did/client/Client.java

@@ -28,7 +28,6 @@ public interface Client {
      *
      * @param timeoutMillis 超时时间
      * @return {@link SdkProto}
-     * @throws Exception 调用异常
      */
     Result<SdkProto> invokeSync(long timeoutMillis);
 
@@ -46,7 +45,6 @@ public interface Client {
      *
      * @param timeoutMillis 超时时间
      * @return id
-     * @throws Exception 调用异常
      */
     default Result<SdkProto> invoke(long timeoutMillis) {
         return invokeSync(timeoutMillis);

did-sdk/src/main/java/io/github/ehlxr/did/client/ResponseFuture.java

@@ -1,6 +1,7 @@
 package io.github.ehlxr.did.client;
 
 import io.github.ehlxr.did.common.SdkProto;
+import io.github.ehlxr.did.common.Try;
 
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.Semaphore;
@@ -46,8 +47,12 @@ public class ResponseFuture {
         }
     }
 
-    public SdkProto waitResponse(final long timeoutMillis) throws InterruptedException {
+    public SdkProto waitResponse(final long timeoutMillis) {
-        this.countDownLatch.await(timeoutMillis, TimeUnit.MILLISECONDS);
+        Try.of(() -> {
+            if (!this.countDownLatch.await(timeoutMillis, TimeUnit.MILLISECONDS)) {
+                setCause(new RuntimeException("timeout after wait " + timeoutMillis));
+            }
+        }).trap(this::setCause).run();
         return this.sdkProto;
     }
 

did-sdk/src/main/java/io/github/ehlxr/did/client/SdkClient.java

@@ -4,6 +4,7 @@ import io.github.ehlxr.did.client.handler.SdkClientDecoder;
 import io.github.ehlxr.did.client.handler.SdkClientEncoder;
 import io.github.ehlxr.did.client.handler.SdkClientHandler;
 import io.github.ehlxr.did.common.Constants;
+import io.github.ehlxr.did.common.Try;
 import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelInitializer;
 import io.netty.channel.socket.SocketChannel;
@@ -50,13 +51,14 @@ public class SdkClient extends AbstractClient {
         bootstrap.handler(new ChannelInitializer<SocketChannel>() {
             @Override
             protected void initChannel(SocketChannel socketChannel) {
-                socketChannel.pipeline().addLast("SdkServerDecoder", new SdkClientDecoder(12))
+                socketChannel.pipeline()
-                        .addLast("SdkServerEncoder", new SdkClientEncoder())
+                        .addLast(new SdkClientDecoder(Constants.DECODER_FRAMELENGTH)) //  如果长度不够会等待
-                        .addLast("SdkClientHandler", new SdkClientHandler());
+                        .addLast(new SdkClientEncoder())
+                        .addLast(new SdkClientHandler());
             }
         });
 
-        try {
+        Try.of(() -> {
             channelFuture = bootstrap.connect(host, port)
                     .sync()
                     .channel()
@@ -66,10 +68,10 @@ public class SdkClient extends AbstractClient {
 
             InetSocketAddress address = (InetSocketAddress) channelFuture.channel().remoteAddress();
             logger.info("SdkClient start success, host is {}, port is {}", address.getHostName(), address.getPort());
-        } catch (InterruptedException e) {
+        }).trap(e -> {
             logger.error("SdkClient start error", e);
             shutdown();
-        }
+        }).run();
     }
 
     public static final class SdkClientBuilder {

did-sdk/src/main/java/io/github/ehlxr/did/client/handler/SdkClientDecoder.java

@@ -25,7 +25,7 @@
 package io.github.ehlxr.did.client.handler;
 
 import io.github.ehlxr.did.common.NettyUtil;
-import io.github.ehlxr.did.common.SdkProto;
+import io.github.ehlxr.did.common.Try;
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelHandlerContext;
@@ -46,28 +46,21 @@ public class SdkClientDecoder extends FixedLengthFrameDecoder {
 
     @Override
     protected Object decode(ChannelHandlerContext ctx, ByteBuf in) {
-        ByteBuf buf = null;
+        return Try.of(() -> {
-        try {
+            ByteBuf decode = (ByteBuf) super.decode(ctx, in);
-            buf = (ByteBuf) super.decode(ctx, in);
+
-            if (buf == null) {
+            byte[] bytes = new byte[decode.readableBytes()];
-                return null;
+            decode.readBytes(bytes);
-            }
+
-            return new SdkProto(buf.readInt(), buf.readLong());
+            decode.release();
-        } catch (Exception e) {
+            return NettyUtil.toObject(bytes);
-            logger.error("SdkClientDecoder decode exception, " + NettyUtil.parseRemoteAddr(ctx.channel()), e);
+        }).trap(e -> logger.error("decode error", e)).get();
-            NettyUtil.closeChannel(ctx.channel());
-        } finally {
-            if (buf != null) {
-                buf.release();
-            }
-        }
-        return null;
     }
 
     @Override
     public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
         Channel channel = ctx.channel();
-        logger.error("SdkServerDecoder channel [{}] error and will be closed", NettyUtil.parseRemoteAddr(channel), cause);
+        logger.error("SdkClientDecoder channel [{}] error and will be closed", NettyUtil.parseRemoteAddr(channel), cause);
         NettyUtil.closeChannel(channel);
     }
 }

did-sdk/src/main/java/io/github/ehlxr/did/client/handler/SdkClientEncoder.java

@@ -27,6 +27,7 @@ package io.github.ehlxr.did.client.handler;
 import io.github.ehlxr.did.client.SdkClient;
 import io.github.ehlxr.did.common.NettyUtil;
 import io.github.ehlxr.did.common.SdkProto;
+import io.github.ehlxr.did.common.Try;
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelHandlerContext;
@@ -41,11 +42,11 @@ import org.slf4j.LoggerFactory;
 public class SdkClientEncoder extends MessageToByteEncoder<SdkProto> {
     private final Logger logger = LoggerFactory.getLogger(SdkClient.class);
 
-
     @Override
     protected void encode(ChannelHandlerContext ctx, SdkProto sdkProto, ByteBuf out) {
-        out.writeInt(sdkProto.getRqid());
+        Try.of(() -> {
-        out.writeLong(sdkProto.getDid());
+            out.writeBytes(NettyUtil.toBytes(sdkProto));
+        }).trap(e -> logger.error("encode error", e)).run();
     }
 
     @Override

did-sdk/src/main/java/io/github/ehlxr/did/client/handler/SdkClientHandler.java

@@ -42,6 +42,8 @@ public class SdkClientHandler extends SimpleChannelInboundHandler<SdkProto> {
 
     @Override
     protected void channelRead0(ChannelHandlerContext ctx, SdkProto sdkProto) {
+        logger.debug("sdk client handler receive sdkProto {}", sdkProto);
+
         final int rqid = sdkProto.getRqid();
         final ResponseFuture responseFuture = Client.REPONSE_MAP.get(rqid);
         if (responseFuture != null) {

did-sdk/src/main/resources/logback.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%date [%thread] %-5level %logger{35}:%line - %msg%n</pattern>
+            <charset>UTF-8</charset>
+        </encoder>
+    </appender>
+
+    <root level="DEBBUG">
+        <appender-ref ref="STDOUT"/>
+    </root>
+
+    <logger name="io.netty" level="OFF"/>
+
+</configuration>

did-sdk/src/test/java/io/github/ehlxr/did/DidSdkTest.java

@@ -1,14 +1,14 @@
 package io.github.ehlxr.did;
 
 import io.github.ehlxr.did.client.SdkClient;
-import io.github.ehlxr.did.common.Result;
+import io.github.ehlxr.did.common.Try;
-import io.github.ehlxr.did.common.SdkProto;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
+import java.util.stream.IntStream;
 
 /**
  * @author ehlxr
@@ -20,7 +20,7 @@ public class DidSdkTest {
     @Before
     public void init() {
         // client = new SdkClient("127.0.0.1", 16831, 5000);
-        client = SdkClient.newBuilder().build();
+        client = SdkClient.newBuilder().timeoutMillis(5000).build();
         client.start();
     }
 
@@ -32,27 +32,26 @@ public class DidSdkTest {
     @Test
     public void didSdkTest() throws Exception {
         // 测试同步请求
-        for (int i = 0; i < NUM; i++) {
+        IntStream.range(0, NUM).parallel().forEach(i -> System.out.println(client.invokeSync()));
-            Result<SdkProto> resultProto = client.invokeSync();
+
-            System.out.println(resultProto);
-        }
         System.out.println("invokeync test finish");
 
         // 测试异步请求
         final CountDownLatch countDownLatch = new CountDownLatch(NUM);
-        for (int i = 0; i < NUM; i++) {
+        IntStream.range(0, NUM).forEach(i ->
-            client.invokeAsync(responseFuture -> {
+                Try.of(() -> client.invokeAsync(responseFuture -> {
-                countDownLatch.countDown();
                     System.out.println(responseFuture.getSdkProto());
-            });
+                    countDownLatch.countDown();
-        }
+                })).trap(Throwable::printStackTrace).run());
+
+        //noinspection ResultOfMethodCallIgnored
         countDownLatch.await(10, TimeUnit.SECONDS);
         System.out.println("invokeAsync test finish");
     }
 
     @Test
     public void testInvoke() {
-        System.out.println(client.invoke());
+        // System.out.println(client.invoke());
 
         client.setTimeoutMillis(3000);
         System.out.println(client.invoke());

did-server/src/main/java/io/github/ehlxr/did/server/BaseServer.java

@@ -1,5 +1,6 @@
 package io.github.ehlxr.did.server;
 
+import io.github.ehlxr.did.common.Try;
 import io.github.ehlxr.did.core.SnowFlake;
 import io.netty.bootstrap.ServerBootstrap;
 import io.netty.channel.ChannelFuture;
@@ -52,9 +53,8 @@ public abstract class BaseServer implements Server {
             }
         });
 
-        serverBootstrap = new ServerBootstrap();
+        serverBootstrap = new ServerBootstrap()
-
+                .group(bossGroup, workGroup)
-        serverBootstrap.group(bossGroup, workGroup)
                 .channel(NioServerSocketChannel.class)
                 // .option(ChannelOption.SO_KEEPALIVE, true)
                 // .option(ChannelOption.TCP_NODELAY, true)
@@ -64,15 +64,13 @@ public abstract class BaseServer implements Server {
 
     @Override
     public void shutdown() {
-        try {
+        Try.of(() -> {
             // 同步阻塞 shutdownGracefully 完成
             if (defLoopGroup != null) {
                 defLoopGroup.shutdownGracefully().sync();
             }
             bossGroup.shutdownGracefully().sync();
             workGroup.shutdownGracefully().sync();
-        } catch (Exception e) {
+        }).trap(e -> logger.error("Server EventLoopGroup shutdown error.", e)).run();
-            logger.error("Server EventLoopGroup shutdown error.", e);
-        }
     }
 }

did-server/src/main/java/io/github/ehlxr/did/server/http/HttpServer.java

@@ -1,6 +1,7 @@
 package io.github.ehlxr.did.server.http;
 
 import io.github.ehlxr.did.common.Constants;
+import io.github.ehlxr.did.common.Try;
 import io.github.ehlxr.did.core.SnowFlake;
 import io.github.ehlxr.did.server.BaseServer;
 import io.netty.channel.ChannelInitializer;
@@ -46,7 +47,7 @@ public class HttpServer extends BaseServer {
 
     @Override
     public void start() {
-        try {
+        Try.of(() -> {
             init();
 
             serverBootstrap.childHandler(new ChannelInitializer<SocketChannel>() {
@@ -63,9 +64,7 @@ public class HttpServer extends BaseServer {
 
             channelFuture = serverBootstrap.bind(port).sync();
             logger.info("HttpServer start success, port is:{}", port);
-        } catch (InterruptedException e) {
+        }).trap(e -> logger.error("HttpServer start fail,", e)).run();
-            logger.error("HttpServer start fail,", e);
-        }
     }
 
     public static final class HttpServerBuilder {

did-server/src/main/java/io/github/ehlxr/did/server/http/HttpServerHandler.java

@@ -33,6 +33,8 @@ public class HttpServerHandler extends SimpleChannelInboundHandler<FullHttpReque
 
     @Override
     protected void channelRead0(ChannelHandlerContext ctx, FullHttpRequest request) throws Exception {
+        logger.debug("http server handler receive request {}", request);
+
         FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
         response.headers().set(HttpHeaderNames.CONTENT_TYPE, HttpHeaderValues.APPLICATION_JSON);
         Result<?> result;
@@ -48,23 +50,14 @@ public class HttpServerHandler extends SimpleChannelInboundHandler<FullHttpReque
         }
 
         if (semaphore.tryAcquire(Constants.ACQUIRE_TIMEOUTMILLIS, TimeUnit.MILLISECONDS)) {
-            try {
             long id = snowFlake.nextId();
-                logger.info("HttpServerHandler id is: {}", id);
 
             status = HttpResponseStatus.OK;
             result = Result.success(SdkProto.newBuilder().did(id).build());
-            } catch (Exception e) {
-                semaphore.release();
-                logger.error("HttpServerHandler error", e);
-
-                status = HttpResponseStatus.INTERNAL_SERVER_ERROR;
-                result = Result.fail(status.code(), status.reasonPhrase());
-            }
         } else {
             String info = String.format("HttpServerHandler tryAcquire semaphore timeout, %dms, waiting thread " + "nums: %d availablePermit: %d",
                     Constants.ACQUIRE_TIMEOUTMILLIS, this.semaphore.getQueueLength(), this.semaphore.availablePermits());
-            logger.warn(info);
+            logger.error(info);
 
             status = HttpResponseStatus.SERVICE_UNAVAILABLE;
             result = Result.fail(status.code(), info);
@@ -73,6 +66,7 @@ public class HttpServerHandler extends SimpleChannelInboundHandler<FullHttpReque
         response.setStatus(status)
                 .content().writeBytes(result.toString().getBytes());
 
+        logger.debug("http server handler write response {} restul {} to channel", status, result);
         ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
     }
 

did-server/src/main/java/io/github/ehlxr/did/server/sdk/SdkServer.java

@@ -1,6 +1,7 @@
 package io.github.ehlxr.did.server.sdk;
 
 import io.github.ehlxr.did.common.Constants;
+import io.github.ehlxr.did.common.Try;
 import io.github.ehlxr.did.core.SnowFlake;
 import io.github.ehlxr.did.server.BaseServer;
 import io.netty.channel.ChannelInitializer;
@@ -41,14 +42,14 @@ public class SdkServer extends BaseServer {
 
     @Override
     public void start() {
-        try {
+        Try.of(() -> {
             init();
 
             serverBootstrap.childHandler(new ChannelInitializer<SocketChannel>() {
                 @Override
                 protected void initChannel(SocketChannel ch) {
                     ch.pipeline().addLast(defLoopGroup,
-                            new SdkServerDecoder(12),
+                            new SdkServerDecoder(Constants.DECODER_FRAMELENGTH),// 如果长度不够会等待
                             new SdkServerEncoder(),
                             new SdkServerHandler(snowFlake)
                     );
@@ -57,9 +58,7 @@ public class SdkServer extends BaseServer {
 
             channelFuture = serverBootstrap.bind(port).sync();
             logger.info("SdkServer start success, port is:{}", port);
-        } catch (InterruptedException e) {
+        }).trap(e -> logger.error("SdkServer start fail,", e)).run();
-            logger.error("SdkServer start fail,", e);
-        }
     }
 
     public static final class SdkServerBuilder {

did-server/src/main/java/io/github/ehlxr/did/server/sdk/SdkServerDecoder.java

@@ -1,7 +1,7 @@
 package io.github.ehlxr.did.server.sdk;
 
 import io.github.ehlxr.did.common.NettyUtil;
-import io.github.ehlxr.did.common.SdkProto;
+import io.github.ehlxr.did.common.Try;
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelHandlerContext;
@@ -21,22 +21,15 @@ public class SdkServerDecoder extends FixedLengthFrameDecoder {
 
     @Override
     protected Object decode(ChannelHandlerContext ctx, ByteBuf in) {
-        ByteBuf buf = null;
+        return Try.of(() -> {
-        try {
+            ByteBuf decode = (ByteBuf) super.decode(ctx, in);
-            buf = (ByteBuf) super.decode(ctx, in);
+
-            if (buf == null) {
+            byte[] bytes = new byte[decode.readableBytes()];
-                return null;
+            decode.readBytes(bytes);
-            }
+
-            return new SdkProto(buf.readInt(), buf.readLong());
+            decode.release();
-        } catch (Exception e) {
+            return NettyUtil.toObject(bytes);
-            logger.error("decode exception, " + NettyUtil.parseRemoteAddr(ctx.channel()), e);
+        }).trap(e -> logger.error("decode error", e)).get();
-            NettyUtil.closeChannel(ctx.channel());
-        } finally {
-            if (buf != null) {
-                buf.release();
-            }
-        }
-        return null;
     }
 
     @Override

did-server/src/main/java/io/github/ehlxr/did/server/sdk/SdkServerEncoder.java

@@ -2,6 +2,7 @@ package io.github.ehlxr.did.server.sdk;
 
 import io.github.ehlxr.did.common.NettyUtil;
 import io.github.ehlxr.did.common.SdkProto;
+import io.github.ehlxr.did.common.Try;
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelHandlerContext;
@@ -18,8 +19,9 @@ public class SdkServerEncoder extends MessageToByteEncoder<SdkProto> {
 
     @Override
     protected void encode(ChannelHandlerContext channelHandlerContext, SdkProto sdkProto, ByteBuf out) {
-        out.writeInt(sdkProto.getRqid());
+        Try.of(() -> {
-        out.writeLong(sdkProto.getDid());
+            out.writeBytes(NettyUtil.toBytes(sdkProto));
+        }).trap(e -> logger.error("encode error", e)).run();
     }
 
     @Override

did-server/src/main/java/io/github/ehlxr/did/server/sdk/SdkServerHandler.java

@@ -33,6 +33,8 @@ public class SdkServerHandler extends SimpleChannelInboundHandler<SdkProto> {
 
     @Override
     protected void channelRead0(ChannelHandlerContext ctx, SdkProto sdkProto) throws Exception {
+        logger.debug("sdk server handler receive sdkProto {}", sdkProto);
+
         if (semaphore.tryAcquire(Constants.ACQUIRE_TIMEOUTMILLIS, TimeUnit.MILLISECONDS)) {
             sdkProto.setDid(snowFlake.nextId());
 
@@ -42,6 +44,7 @@ public class SdkServerHandler extends SimpleChannelInboundHandler<SdkProto> {
                     Constants.ACQUIRE_TIMEOUTMILLIS, this.semaphore.getQueueLength(), this.semaphore.availablePermits());
         }
 
+        logger.debug("sdk server handler write sdkProto {} to channel", sdkProto);
         ctx.channel().
                 writeAndFlush(sdkProto).
                 addListener(ChannelFutureListener.CLOSE_ON_FAILURE);

did-server/src/main/resources/logback.xml

@@ -36,10 +36,12 @@
         </encoder>
     </appender>
 
-    <root level="INFO">
+    <root level="DEBUUG">
         <appender-ref ref="STDOUT"/>
         <appender-ref ref="ERROR"/>
         <appender-ref ref="NORMAL"/>
     </root>
 
+    <logger name="io.netty" level="OFF"/>
+
 </configuration>