原来dubbo 还支持 golang 呢，可以用相互调用，相爱了。使用java 做服务端，golang做客户端
1，关于 dubbo-go
https://dubbo.apache.org/zh-cn/
官方提供了 dubbo-go 的代码
但是并不支持试 Hessian(X)
https://github.com/dubbo/dubbo-go
具体说明：
- 1 Transport: HTTP(√)
- 2 Codec: JsonRPC(√), Hessian(X)
- 3 Service discovery：Service Register(√), Service Watch(√)
- 4 Registry: ZooKeeper(√), Etcd(X), Redis(X)
- 5 Strategy: Failover(√), Failfast(√)
- 6 Load Balance: Random(√), RoundRobin(√)
- 7 Role: Consumer(√), Provider(X)
2，栗子
本来想自己写一个例子。
没有想到官方都做好了。只要调用就可以了。
https://github.com/dubbo/dubbo-go/tree/master/examples
但是没有跑通，不过没有关系，发现另外一个项目
也是这个作者写的。不知道为啥没有迁移过来。
https://github.com/AlexStocks/dubbogo-examples
https://github.com/AlexStocks/dubbogo
这个项目：
两个项目需要合到一起次才能跑起来。
dubbo-go 里面跑 java ，dubbogo-examples 里面跑 golang
java：
package com.ikurento.user;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Provider {
/**
* To get ipv6 address to work, add
* System.setProperty("java.net.preferIPv6Addresses", "true");
* before running your application.
*/
public static void main(String[] args) throws Exception {
String[] confs = new String[]{"META-INF/spring/dubbo.provider.xml"};
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(confs);
context.start();
System.out.println("################## start ##################");
System.in.read(); // press any key to exit
}
}
golang clinet：
cd dubbogo-examples\user-info\client
sh .\assembly\windows\test.sh
cd .\target\windows\user_info_client-*
sh .\bin\load_user_info_client.sh start
配置： client.toml
# dubbo client toml configure file
# pprof
Pprof_Enabled = true
Pprof_Port = 10086
# client
Request_Timeout = "350ms"
NET_IO_Timeout = "2s"
Retries = 2
# 连接池中每个地址的最大连接数
Pool_Size = 32
# 连接池中每个连接的有效时间
Pool_TTL = "10m"
# connect timeout
Connect_Timeout = "100ms"
Selector = "cache"
Selector_TTL = "10m"
Registry = "zookeeper"
# application config
[Application_Config]
Organization = "ikurento.com"
Name = "Pusher"
Module = "dubbogo user-info client"
Version = "0.0.1"
Owner = "ZX"
[Registry_Config]
# You can indent as you please. Tabs or spaces. TOML don't care.
Address = ["127.0.0.1:2181"]
Timeout = 3
[[Service_List]]
Protocol = "dubbo"
Service = "com.ikurento.user.UserProvider"
client.go :
....
func main() {
var (
err error
)
err = initClientConfig()
if err != nil {
log.Error("initClientConfig() = error{%#v}", err)
return
}
initProfiling()
initClient()
hessian.RegisterJavaEnum(Gender(MAN))
hessian.RegisterPOJO(&DubboUser{})
hessian.RegisterPOJO(&Response{})
time.Sleep(1) // wait for selector
gxlog.CInfo("###################################################")
gxlog.CInfo("\n\n\nstart to test jsonrpc")
//testJsonrpc("A003")
gxlog.CInfo("\n\n\nstart to test dubbo Calc")
testDubboCalc()
gxlog.CInfo("\n\n\nstart to test dubbo Sum")
testDubboSum()
gxlog.CInfo("\n\n\nstart to test dubbo GetUsers")
testDubboGetUsers()
gxlog.CInfo("\n\n\nstart to test dubbo GetUserMap")
testDubboGetUserMap()
gxlog.CInfo("###################################################")
time.Sleep(1) // wait for selector
initSignal()
}
....
3，运行 日志
再golang里面：
[0m[32m[2018-09-19/23:51:59 main.testDubboGetUserMap: test.go: 256] dubbo selected service registry.ServiceConfig{Protocol:"dubbo", Service:"com.ikurento.user.UserProvider", Group:"", Version:""}[0m
0[2018/09/19 23:51:59 CST] [DEBG] (rpc_client.go:github.com/AlexStocks/dubbogo/client.(*rpcClient).Call:325) reqID{2664339703}, err:
[0m[32m[2018/09/19 23:51:59 CST] [INFO] (test.go:main.testDubboGetUsers:224) response result:[User{Id:001, Name:demo-zhangsan, Age:18, Time:2018-09-19 23:51:51.981 +0800 CST, Sex:MAN} User{Id:003, Name:demo-lily, Age:23, Time:2018-09-19 23:51:51.981 +0800 CST, Sex:MAN} User{Id:004, Name:demo-lisa, Age:32, Time:2018-09-19 23:51:51.981 +0800 CST, Sex:MAN}]
[0m0[2018/09/19 23:51:59 CST] [DEBG] (cache.go:github.com/AlexStocks/dubbogo/selector/cache.(*cacheSelector).Select:296) @service:®istry.ServiceConfig{Protocol:"dubbo", Service:"com.ikurento.user.UserProvider", Group:"", Version:""}
[0m0[2018/09/19 23:51:59 CST] [DEBG] (cache.go:github.com/AlexStocks/dubbogo/selector/cache.(*cacheSelector).get:85) c.get(@s:®istry.ServiceConfig{Protocol:"dubbo", Service:"com.ikurento.user.UserProvider", Group:"", Version:""})
[0m0[2018/09/19 23:51:59 CST] [DEBG] (cache.go:github.com/AlexStocks/dubbogo/selector/cache.(*cacheSelector).get:100) c.cache[service{registry.ServiceConfig{Protocol:"dubbo", Service:"com.ikurento.user.UserProvider", Group:"", Version:""}}] = services{[ServiceURL{Protocol:dubbo, Location:10.0.75.1:20880, Path:/com.ikurento.user.UserProvider, Ip:10.0.75.1, Port:20880, Version:, Group:, Weight:0, Query:map[generic:[false] pid:[13908] anyhost:[true] application:[user-info-server] dubbo:[2.5.4] interface:[com.ikurento.user.UserProvider] methods:[GetUserMap,getUser,isLimit,Calc,Sum,queryAll,GetUsers,queryUser,GetUser] side:[provider] timeout:[3000] timestamp:[1537372312034]]}]}
[0m0[2018/09/19 23:51:59 CST] [DEBG] (rpc_client.go:github.com/AlexStocks/dubbogo/client.(*rpcClient).Call:272) ctx:(*context.emptyCtx)(0xc042066058), d:time.Time{wall:0x0, ext:0, loc:(*time.Location)(nil)}, ok:false
[0m0[2018/09/19 23:51:59 CST] [DEBG] (rpc_client.go:github.com/AlexStocks/dubbogo/client.(*rpcClient).Call:275) create timeout context, timeout:350ms
[0m0[2018/09/19 23:51:59 CST] [DEBG] (rpc_client.go:github.com/AlexStocks/dubbogo/client.(*rpcClient).call.func1:189) store connection:{protocol:dubbo, location:10.0.75.1:20880, conn:&client.poolConn{once:(*sync.Once)(0xc0421a8bf0), Client:(*transport.tcpTransportClient)(0xc0421d4c40), created:1537372319}}, gerr:
[0m[32m[2018-09-19/23:51:59 main.main: client.go: 74] ###################################################[0m
0[2018/09/19 23:51:59 CST] [DEBG] (rpc_client.go:github.com/AlexStocks/dubbogo/client.(*rpcClient).Call.func1:304) @i{0}, call(ID{2664339704}, ctx{context.Background.WithDeadline(2018-09-19 23:51:59.6081597 +0800 CST m=+0.815997701 [338.9607ms])}, serviceURL{ServiceURL{Protocol:dubbo, Location:10.0.75.1:20880, Path:/com.ikurento.user.UserProvider, Ip:10.0.75.1, Port:20880, Version:, Group:, Weight:0, Query:map[anyhost:[true] application:[user-info-server] dubbo:[2.5.4] interface:[com.ikurento.user.UserProvider] methods:[GetUserMap,getUser,isLimit,Calc,Sum,queryAll,GetUsers,queryUser,GetUser] side:[provider] timeout:[3000] timestamp:[1537372312034] generic:[false] pid:[13908]]}}, request{&{ dubbo com.ikurento.user.UserProvider GetUserMap [[001 003 004]] application/dubbo {true }}}, response{&map[003:User{Id:003, Name:demo-lily, Age:23, Time:2018-09-19 23:51:51.981 +0800 CST, Sex:MAN} 004:User{Id:004, Name:demo-lisa, Age:32, Time:2018-09-19 23:51:51.981 +0800 CST, Sex:MAN} 001:User{Id:001, Name:demo-zhangsan, Age:18, Time:2018-09-19 23:51:51.981 +0800 CST, Sex:MAN}]}) = err{}
[0m0[2018/09/19 23:51:59 CST] [DEBG] (rpc_client.go:github.com/AlexStocks/dubbogo/client.(*rpcClient).Call:325) reqID{2664339704}, err:
[0m[32m[2018/09/19 23:51:59 CST] [INFO] (test.go:main.testDubboGetUserMap:271) response result:map[003:User{Id:003, Name:demo-lily, Age:23, Time:2018-09-19 23:51:51.981 +0800 CST, Sex:MAN} 004:User{Id:004, Name:demo-lisa, Age:32, Time:2018-09-19 23:51:51.981 +0800 CST, Sex:MAN} 001:User{Id:001, Name:demo-zhangsan, Age:18, Time:2018-09-19 23:51:51.981 +0800 CST, Sex:MAN}]
....
java 服务端代码。
2018-09-19/23:51:59.239 INFO: com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.disconnected(DubboProtocol.java:124) - [DUBBO] disconected from /10.0.75.1:58445,url:dubbo://10.0.75.1:20880/com.ikurento.user.UserProvider?anyhost=true&application=user-info-server&channel.readonly.sent=true&codec=dubbo&dubbo=2.5.4&generic=false&heartbeat=60000&interface=com.ikurento.user.UserProvider&methods=GetUserMap,getUser,isLimit,Calc,Sum,queryAll,GetUsers,queryUser,GetUser&pid=13908&side=provider&timeout=3000×tamp=1537372312034, dubbo version: 2.5.4, current host: 127.0.0.1
2018-09-19/23:51:59.244 DEBUG: com.alibaba.dubbo.remoting.transport.DecodeHandler.decode(DecodeHandler.java:60) - [DUBBO] Decode decodeable message com.alibaba.dubbo.rpc.protocol.dubbo.DecodeableRpcInvocation, dubbo version: 2.5.4, current host: 127.0.0.1
2018-09-19/23:51:59.244 WARN: com.ikurento.user.UserProviderImpl.GetUsers(UserProviderImpl.java:39) - @userIdList size:3
2018-09-19/23:51:59.244 INFO: com.ikurento.user.UserProviderImpl.GetUsers(UserProviderImpl.java:43) - GetUsers(@uid:001)
2018-09-19/23:51:59.245 INFO: com.ikurento.user.UserProviderImpl.GetUsers(UserProviderImpl.java:46) - id:001, user:User{id:001, name:demo-zhangsan, age:18, time:Wed Sep 19 23:51:51 CST 2018, gender:MAN}
2018-09-19/23:51:59.245 INFO: com.ikurento.user.UserProviderImpl.GetUsers(UserProviderImpl.java:43) - GetUsers(@uid:003)
2018-09-19/23:51:59.245 INFO: com.ikurento.user.UserProviderImpl.GetUsers(UserProviderImpl.java:46) - id:003, user:User{id:003, name:demo-lily, age:23, time:Wed Sep 19 23:51:51 CST 2018, gender:MAN}
2018-09-19/23:51:59.245 INFO: com.ikurento.user.UserProviderImpl.GetUsers(UserProviderImpl.java:43) - GetUsers(@uid:004)
2018-09-19/23:51:59.245 INFO: com.ikurento.user.UserProviderImpl.GetUsers(UserProviderImpl.java:46) - id:004, user:User{id:004, name:demo-lisa, age:32, time:Wed Sep 19 23:51:51 CST 2018, gender:MAN}
2018-09-19/23:51:59.255 WARN: com.alibaba.dubbo.remoting.transport.AbstractServer.disconnected(AbstractServer.java:199) - [DUBBO] All clients has discontected from /10.0.75.1:20880. You can graceful shutdown now., dubbo version: 2.5.4, current host: 127.0.0.1
2018-09-19/23:51:59.256 INFO: com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.disconnected(DubboProtocol.java:124) - [DUBBO] disconected from /10.0.75.1:58448,url:dubbo://10.0.75.1:20880/com.ikurento.user.UserProvider?anyhost=true&application=user-info-server&channel.readonly.sent=true&codec=dubbo&dubbo=2.5.4&generic=false&heartbeat=60000&interface=com.ikurento.user.UserProvider&methods=GetUserMap,getUser,isLimit,Calc,Sum,queryAll,GetUsers,queryUser,GetUser&pid=13908&side=provider&timeout=3000×tamp=1537372312034, dubbo version: 2.5.4, current host: 127.0.0.1
2018-09-19/23:51:59.261 DEBUG: com.alibaba.dubbo.remoting.transport.DecodeHandler.decode(DecodeHandler.java:60) - [DUBBO] Decode decodeable message com.alibaba.dubbo.rpc.protocol.dubbo.DecodeableRpcInvocation, dubbo version: 2.5.4, current host: 127.0.0.1
2018-09-19/23:51:59.262 WARN: com.ikurento.user.UserProviderImpl.GetUserMap(UserProviderImpl.java:56) - @userIdList size:3
2018-09-19/23:51:59.262 INFO: com.ikurento.user.UserProviderImpl.GetUserMap(UserProviderImpl.java:60) - GetUsers(@uid:001)
2018-09-19/23:51:59.262 INFO: com.ikurento.user.UserProviderImpl.GetUserMap(UserProviderImpl.java:63) - id:001, user:User{id:001, name:demo-zhangsan, age:18, time:Wed Sep 19 23:51:51 CST 2018, gender:MAN}
2018-09-19/23:51:59.262 INFO: com.ikurento.user.UserProviderImpl.GetUserMap(UserProviderImpl.java:60) - GetUsers(@uid:003)
2018-09-19/23:51:59.263 INFO: com.ikurento.user.UserProviderImpl.GetUserMap(UserProviderImpl.java:63) - id:003, user:User{id:003, name:demo-lily, age:23, time:Wed Sep 19 23:51:51 CST 2018, gender:MAN}
2018-09-19/23:51:59.263 INFO: com.ikurento.user.UserProviderImpl.GetUserMap(UserProviderImpl.java:60) - GetUsers(@uid:004)
2018-09-19/23:51:59.263 INFO: com.ikurento.user.UserProviderImpl.GetUserMap(UserProviderImpl.java:63) - id:004, user:User{id:004, name:demo-lisa, age:32, time:Wed Sep 19 23:51:51 CST 2018, gender:MAN}
2018-09-19/23:51:59.271 WARN: com.alibaba.dubbo.remoting.transport.AbstractServer.disconnected(AbstractServer.java:199) - [DUBBO] All clients has discontected from /10.0.75.1:20880. You can graceful shutdown now., dubbo version: 2.5.4, current host: 127.0.0.1
2018-09-19/23:51:59.272 INFO: com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.disconnected(DubboProtocol.java:124) - [DUBBO] disconected from /10.0.75.1:58451,url:dubbo://10.0.75.1:20880/com.ikurento.user.UserProvider?anyhost=true&application=user-info-server&channel.readonly.sent=true&codec=dubbo&dubbo=2.5.4&generic=false&heartbeat=60000&interface=com.ikurento.user.UserProvider&methods=GetUserMap,getUser,isLimit,Calc,Sum,queryAll,GetUsers,queryUser,GetUser&pid=13908&side=provider&timeout=3000×tamp=1537372312034, dubbo version: 2.5.4, current host: 127.0.0.1
2018-09-19/23:52:02.633 DEBUG: org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:717) - Got ping response for sessionid: 0x1000002d22f001b after 1ms
....
4，总结
以前有很多项目都是java写的，业务逻辑是用dubbo做的服务。
这部分是不可能重写了。但是要是使用golang开发新项目。需要用到 dubbo服务。
支持的协议 hessian2 ，这样写的程序就可以相互调用了。
超级兴奋。同时问了下作者， dubbo-go 再过1 - 2 月也能完善了。
同时也可以使用 golang 做server服务，让java 程序去做client 调用。
非常非常帮的。
本文的原文连接是:
https://blog.csdn.net/freewebsys/article/details/82780264
博主地址是：http://blog.csdn.net/freewebsys
