feat(generic): add generic call sample for both Dubbo and Triple protocols by Tsukikage7 · Pull Request #1016 · apache/dubbo-go-samples

Tsukikage7 · 2026-01-06T03:08:23Z

What this PR does

This PR refactors and enhances the generic call sample to demonstrate both Dubbo protocol and Triple protocol generic calls between Go and Java.

Dependencies

This PR depends on apache/dubbo-go#3154 which adds NewGenericService API.
CI will pass after that PR is merged to main branch.

Background

The existing generic sample only demonstrated Dubbo protocol generic call. With the new Triple protocol generic call support in dubbo-go (see apache/dubbo-go#3154), this sample needs to be updated to showcase both protocols.

Changes Overview

1. Dual Protocol Support

The sample now demonstrates generic call on both protocols:

Protocol	Port	Group	Description
Dubbo	20000	`dubbo`	Traditional Dubbo binary protocol
Triple	50052	`triple`	HTTP/2 based Triple protocol

2. Java Server Enhancement

Before: Single protocol, ZooKeeper dependency
After: Dual protocol, direct connection mode

// ApiProvider.java - Now exposes both protocols
public class ApiProvider {
    private static final int DUBBO_PORT = 20000;
    private static final int TRIPLE_PORT = 50052;

    public static void main(String[] args) {
        // Dubbo protocol service (group=dubbo)
        ServiceConfig<UserProvider> dubboService = new ServiceConfig<>();
        dubboService.setGroup("dubbo");
        dubboService.setProtocol(new ProtocolConfig("dubbo", DUBBO_PORT));

        // Triple protocol service (group=triple)
        ServiceConfig<UserProvider> tripleService = new ServiceConfig<>();
        tripleService.setGroup("triple");
        tripleService.setProtocol(new ProtocolConfig("tri", TRIPLE_PORT));

        // Bootstrap both services...
    }
}

3. Go Client Enhancement

Before: Only Dubbo protocol test
After: Tests both Dubbo and Triple protocols using new GenericService API

func main() {
    // Test Dubbo protocol generic call
    logger.Info("=== Testing Dubbo Protocol Generic Call ===")
    testDubboProtocol(ins)

    // Test Triple protocol generic call
    logger.Info("=== Testing Triple Protocol Generic Call ===")
    testTripleProtocol(ins)
}

func testDubboProtocol(ins *dubbo.Instance) {
    cli, _ := ins.NewClient(
        client.WithClientProtocolDubbo(),
        client.WithClientSerialization(constant.Hessian2Serialization),
    )
    // Use NewGenericService for traditional Dubbo-style generic call API
    genericService, _ := cli.NewGenericService(UserProvider,
        client.WithURL("dubbo://127.0.0.1:20000"),
        client.WithVersion("1.0.0"),
        client.WithGroup("dubbo"),
    )
    runGenericTests(genericService, "Dubbo")
}

func testTripleProtocol(ins *dubbo.Instance) {
    cli, _ := ins.NewClient(
        client.WithClientProtocolTriple(),
        client.WithClientSerialization(constant.Hessian2Serialization),
    )
    // Use NewGenericService for traditional Dubbo-style generic call API
    genericService, _ := cli.NewGenericService(UserProvider,
        client.WithURL("tri://127.0.0.1:50052"),
        client.WithVersion("1.0.0"),
        client.WithGroup("triple"),
    )
    runGenericTests(genericService, "Triple")
}

// GenericService.Invoke provides traditional $invoke style API
func runGenericTests(svc *generic.GenericService, protocol string) {
    // GetUser1(String)
    result, _ := svc.Invoke(ctx, "GetUser1",
        []string{"java.lang.String"},
        []hessian.Object{"A003"})
    logger.Infof("[%s] GetUser1 res: %+v", protocol, result)

    // QueryUser(User) - POJO parameter
    result, _ = svc.Invoke(ctx, "QueryUser",
        []string{"org.apache.dubbo.samples.User"},
        []hessian.Object{&pkg.User{ID: "001", Name: "test", Age: 25}})
    logger.Infof("[%s] QueryUser res: %+v", protocol, result)
}

4. Comprehensive Test Suite

Added client_test.go with 19 test cases:

Dubbo Protocol Tests (6 cases):

TestDubboGenericCall_StringArg
TestDubboGenericCall_MultipleArgs
TestDubboGenericCall_IntArg
TestDubboGenericCall_NoArgs
TestDubboGenericCall_ArrayArg
TestDubboGenericCall_POJOArg

Triple Protocol Tests (13 cases):

TestTripleGenericCall_StringArg
TestTripleGenericCall_MultipleArgs
TestTripleGenericCall_IntArg
TestTripleGenericCall_NoArgs
TestTripleGenericCall_ArrayArg
TestTripleGenericCall_POJOArg
TestTripleGenericCall_POJOArrayArg
TestTripleGenericCall_MapResult
TestTripleGenericCall_ListResult
TestTripleGenericCall_EmptyArrayArg
TestTripleGenericCall_NonExistentMethod
TestTripleGenericCall_WithTimeout
TestTripleGenericCall_WithCancelledContext

Benchmarks:

BenchmarkDubboGenericCall
BenchmarkTripleGenericCall

5. Project Structure Simplification

Before (nested directories):

generic/
├── java-server/
│   └── java-server/     # Redundant nesting
│       ├── pom.xml
│       └── src/
├── java-client/
│   └── java-client/     # Redundant nesting
│       ├── pom.xml
│       └── src/

After (flat structure):

generic/
├── java-server/
│   ├── pom.xml
│   ├── run.sh
│   └── src/
├── java-client/
│   ├── pom.xml
│   ├── run.sh
│   └── src/
├── go-server/
│   └── cmd/
├── go-client/
│   └── cmd/
│       ├── client.go
│       └── client_test.go

6. Removed ZooKeeper Dependency

Changed from registry-based service discovery to direct URL connection
Simplifies local testing and CI/CD pipelines
No external dependencies required to run the sample

Files Changed

File	Change Type	Description
`generic/java-server/src/.../ApiProvider.java`	Modified	Dual protocol support
`generic/java-client/src/.../ApiTripleConsumer.java`	Added	Triple protocol consumer
`generic/go-client/cmd/client.go`	Modified	Both protocol tests
`generic/go-client/cmd/client_test.go`	Added	19 test cases + benchmarks
`generic/go-server/cmd/server.go`	Modified	Enhanced server
`generic/go-server/pkg/user_provider.go`	Modified	Cleaner implementation
`generic/java-server/run.sh`	Added	Easy run script
`generic/java-client/run.sh`	Added	Easy run script
`generic/README.md`	Modified	Updated documentation
`generic/README_zh.md`	Modified	Updated Chinese documentation
`generic/java-/java-/`	Deleted	Removed redundant nesting
`generic/build/test.sh`	Deleted	Obsolete test script

How to Test

1. Start Java Server

cd generic/java-server
./run.sh

2. Run Go Client Tests

cd generic/go-client/cmd
go test -v

3. Or Run Go Client Manually

cd generic/go-client/cmd
go run client.go

Test Results

=== Testing Dubbo Protocol Generic Call ===
[Dubbo] GetUser1(userId string) res: map[age:48 class:org.apache.dubbo.samples.User ...]
[Dubbo] GetUser2(userId string, name string) res: map[age:48 ...]
[Dubbo] GetUser3(userCode int) res: map[age:48 ...]
[Dubbo] GetUser4(userCode int, name string) res: map[age:48 ...]
[Dubbo] GetOneUser() res: map[age:48 ...]
[Dubbo] GetUsers(userIdList []string) res: [map[age:48 ...] map[age:48 ...] ...]
[Dubbo] GetUsersMap(userIdList []string) res: map[001:map[age:48 ...] ...]
[Dubbo] QueryAll() res: [map[age:48 ...] map[age:48 ...]]
[Dubbo] QueryUser(user *User) res: map[age:25 ...]
[Dubbo] QueryUsers(users []*User) res: [map[age:24 ...] map[age:21 ...]]

=== Testing Triple Protocol Generic Call ===
[Triple] GetUser1(userId string) res: map[age:48 ...]
[Triple] GetUser2(userId string, name string) res: map[age:48 ...]
[Triple] GetUser3(userCode int) res: map[age:48 ...]
[Triple] GetUser4(userCode int, name string) res: map[age:48 ...]
[Triple] GetOneUser() res: map[age:48 ...]
[Triple] GetUsers(userIdList []string) res: [map[age:48 ...] ...]
[Triple] GetUsersMap(userIdList []string) res: map[001:map[age:48 ...] ...]
[Triple] QueryAll() res: [map[age:48 ...] map[age:48 ...]]
[Triple] QueryUser(user *User) res: map[age:25 ...]
[Triple] QueryUsers(users []*User) res: [map[age:24 ...] map[age:21 ...]]

All generic call tests completed

Related PRs

feat(triple): support generic call for Triple protocol dubbo-go#3154 - Triple protocol generic call implementation

Signed-off-by: TsukiKage chongyanx@163.com

Tsukikage7 · 2026-01-06T05:39:24Z

⚠️ CI Failure Note

The golangci-lint check fails because this PR uses NewGenericService API which is added in apache/dubbo-go#3154.

CI will pass after apache/dubbo-go#3154 is merged to main branch.

Dependency chain:

feat(triple): support generic call for Triple protocol dubbo-go#3154 (adds NewGenericService API) - merge first

This PR (uses the new API) - merge after

Copilot

Pull request overview

This PR refactors the generic call sample to demonstrate both Dubbo and Triple protocol generic calls between Go and Java. The refactoring includes dual protocol support, project structure simplification, and a comprehensive test suite with 19 test cases.

Changes:

Added dual protocol support (Dubbo on port 20000 and Triple on port 50052) with separate service groups
Refactored project structure by removing redundant nested directories (java-server/java-server → java-server)
Added comprehensive test coverage with 19 test cases and 2 benchmarks for generic calls
Changed QueryUsers signature from List to User[] for consistency

Reviewed changes

Copilot reviewed 30 out of 38 changed files in this pull request and generated 16 comments.

Show a summary per file

File	Description
go.mod	Added local replace directive for dubbo-go dependency (temporary)
generic/java-server/src/main/java/org/apache/dubbo/samples/ApiProvider.java	New dual protocol server implementation
generic/java-server/src/main/java/org/apache/dubbo/samples/User.java	Added User POJO class
generic/java-server/src/main/java/org/apache/dubbo/samples/Gender.java	Added Gender enum
generic/java-server/src/main/java/org/apache/dubbo/samples/UserProvider.java	Changed QueryUsers from List to array
generic/java-server/src/main/java/org/apache/dubbo/samples/UserProviderImpl.java	Updated QueryUsers implementation
generic/java-client/src/main/java/org/apache/dubbo/samples/ApiTripleConsumer.java	New Triple protocol consumer
generic/java-client/pom.xml	New client pom configuration
generic/go-server/cmd/server.go	Simplified server implementation
generic/go-server/pkg/user_provider.go	Added Invoke method for generic calls
generic/go-client/cmd/client.go	Refactored to test both protocols
generic/go-client/cmd/client_test.go	Added comprehensive test suite
generic/README.md	Updated documentation
generic/README_zh.md	Updated Chinese documentation

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generic/README.md

generic/README_zh.md

Copilot · 2026-01-12T02:11:43Z

go.mod

 )

 replace (
+	dubbo.apache.org/dubbo-go/v3 => ../dubbo-go


The local replace directive points to a relative path '../dubbo-go' which is a temporary development dependency. This should be removed before merging to production. The PR description mentions this depends on apache/dubbo-go#3154, so this replace directive should only be present during development/testing and removed once that PR is merged.

generic/README.md

Copilot · 2026-01-12T02:11:43Z

generic/README_zh.md

+启动 ZooKeeper：

- Docker 和 Docker Compose 用于运行 ZooKeeper 注册中心
- Go 1.23+ 用于 Dubbo-Go 示例
- Java 8+ 和 Maven 用于 Dubbo Java 示例
+```bash
+docker run -d --name zookeeper -p 2181:2181 zookeeper:3.8
+```


The Chinese README also includes ZooKeeper setup instructions in the Prerequisites section, which is inconsistent with the direct connection approach described in the PR. This section should be updated to match the removal of ZooKeeper dependency.

generic/go-server/cmd/server.go

generic/README.md

generic/README_zh.md

generic/java-server/src/main/resources/dubbo.properties

generic/README_zh.md

AlexStocks · 2026-01-13T11:14:37Z

Please fix the ci failure and review the copilot's comment.

Alanxtl · 2026-01-15T03:59:52Z

这个ci fail只能等dubbogo发新tag才能解决

Alanxtl · 2026-01-15T04:02:46Z

go.mod

 )

 replace (
+	dubbo.apache.org/dubbo-go/v3 => ../dubbo-go


这个replace不要上传

这个我等一下改一下，我把copliot提的那些问题修复一下吧

AlexStocks · 2026-02-07T01:50:30Z

ci失败处理下吧

1 fix(deps): update dubbo-go to latest commit with NewGenericService API 2 3 - Replace local path with github commit v3.0.0-20260210015753-35ea886421f9 4 - This commit includes the NewGenericService API (apache/dubbo-go#3154) 5 - Fixes CI compilation errors for generic call sample 6 7 Resolves: apache#1016 (CI failure)

Alanxtl · 2026-02-12T09:45:34Z

go.mod

 )

 replace (
+	dubbo.apache.org/dubbo-go/v3 => github.com/apache/dubbo-go/v3 v3.0.0-20260210015753-35ea886421f9


为啥还是replace到了旧版本

这个我改一下，主要是为了过ci

Alanxtl · 2026-02-12T09:46:41Z

现在这个sample加到集成测试里面了吗

Similarityoung · 2026-02-14T05:39:52Z

generic/go-client/cmd/client_test.go

+		&pkg.User{ID: "003", Name: "User3", Age: 30, Time: time.Now()},
+	}
+
+	result, err := svc.Invoke(context.Background(), "QueryUsers", []string{"java.util.List"}, []hessian.Object{users})


Similarityoung · 2026-02-14T16:36:58Z

generic/java-server/pom.xml

这里改成 3.8.4 好像才能跑通，我这是这样的，希望别人也来测下。

我把pom中的依赖版本改一下

generic/java-client/pom.xml

Alanxtl · 2026-02-16T09:08:57Z

集成测试的逻辑我完全重写了一遍，请参考 https://github.com/apache/dubbo-go-samples/blob/main/HOWTO_CN.md#13-%E5%A6%82%E4%BD%95%E6%96%B0%E5%A2%9E%E4%B8%80%E4%B8%AA%E9%9B%86%E6%88%90%E6%B5%8B%E8%AF%95-sample 看下是否能加到集成测试里面

…ocols This PR refactors and enhances the generic call sample to demonstrate both Dubbo protocol and Triple protocol generic calls between Go and Java. | Protocol | Port | Group | Description | |----------|-------|----------|----------------------------------| | Dubbo | 20000 | `dubbo` | Traditional Dubbo binary protocol| | Triple | 50052 | `triple` | HTTP/2 based Triple protocol | - Removed ZooKeeper dependency in favor of direct URL connection - Simplifies local testing and CI/CD pipelines - No external dependencies required to run the sample - Removed redundant nested directories (java-server/java-server → java-server) - Added run.sh scripts for easy execution Added client_test.go with test cases covering: - Dubbo Protocol Tests (6 cases) - Triple Protocol Tests (13 cases) - Benchmarks for both protocols - Go server uses direct connection mode (no registry) - user_provider.go Invoke method returns proper error for unknown methods - Fixed QueryUsers parameter type to match Java array signature This PR depends on apache/dubbo-go#3154 which adds `NewGenericService` API. CI will pass after that PR is merged to main branch. Signed-off-by: TsukiKage <chongyanx@163.com>

1 feat(generic): add generic call sample for both Dubbo and Triple protocols 2 3 Signed-off-by: TsukiKage <chongyanx@163.com>

Alanxtl · 2026-02-25T05:01:06Z

pls fix confilct

Tsukikage7 force-pushed the test/generic-interop-enhanced branch 4 times, most recently from 9babfa4 to da7f82d Compare January 6, 2026 04:03

Tsukikage7 mentioned this pull request Jan 6, 2026

feat(triple): support generic call for Triple protocol apache/dubbo-go#3154

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Tsukikage7 force-pushed the test/generic-interop-enhanced branch from 9fe8d23 to 3e4db86 Compare January 6, 2026 06:05

AlexStocks requested a review from Copilot January 12, 2026 02:01

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Tsukikage7 force-pushed the test/generic-interop-enhanced branch 4 times, most recently from 5c4a941 to 5d068dd Compare January 15, 2026 04:39

Alanxtl linked an issue Jan 20, 2026 that may be closed by this pull request

Bug: Interoperability failure between Go and Java in samples/generic #1005

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Tsukikage7 force-pushed the test/generic-interop-enhanced branch from 5d068dd to cf340d7 Compare February 10, 2026 07:49

Tsukikage7 force-pushed the test/generic-interop-enhanced branch 3 times, most recently from 28d3472 to 27ddd80 Compare February 12, 2026 05:51

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1 feat(generic): add generic call sample for both Dubbo and Triple protocols 2 3 Signed-off-by: TsukiKage <chongyanx@163.com>

Tsukikage7 force-pushed the test/generic-interop-enhanced branch from f3bceec to 1eaf803 Compare February 18, 2026 08:29

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Tsukikage7 commented Jan 6, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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What this PR does

Background

Changes Overview

1. Dual Protocol Support

2. Java Server Enhancement

3. Go Client Enhancement

4. Comprehensive Test Suite

5. Project Structure Simplification

6. Removed ZooKeeper Dependency

Files Changed

How to Test

1. Start Java Server

2. Run Go Client Tests

3. Or Run Go Client Manually

Test Results

Related PRs

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Tsukikage7 commented Jan 6, 2026 •

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