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Posted to notifications@dubbo.apache.org by GitBox <gi...@apache.org> on 2021/11/11 07:13:16 UTC
[GitHub] [dubbo-go] PhilYue opened a new issue #1582: [JSON-RPC] panic error:"reflect: Call using map[string]interface {} as type *pkg.User"
PhilYue opened a new issue #1582:
URL: https://github.com/apache/dubbo-go/issues/1582
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**What happened**:
基于当前的 [JSON-RPC](https://github.com/apache/dubbo-go-samples/tree/master/rpc/jsonrpc) 示例，**将调用接口方法入参与出参都改造为 `struct` 后**，Server 端抛出异常，方法无法正常执行。
Client 改造后方法
```
logger.Infof("\n\n\nstart to test jsonrpc")
user := &pkg.JsonRPCUser{
ID: "A003",
}
user, err := userProvider.GetUser(context.TODO(), user)
if err != nil {
panic(err)
}
logger.Infof("response result: %v", user)
```
Server 改造后方法
```
func (u *UserProvider) GetUser(ctx context.Context, userID *User) (*User, error) {
var (
err error
user *User
)
gxlog.CInfo("userID:%#v", userID)
user, err = u.getUser(userID.ID)
if err == nil {
gxlog.CInfo("rsp:%#v", user)
}
return user, err
}
```
Client 异常日志
```
start to test jsonrpc
2021-11-11T14:53:49.338+0800 WARN proxy/proxy.go:215 result err: unexpected EOF
panic: unexpected EOF
```
Server 异常日志
```
2021-11-11T15:02:15.525+0800 WARN jsonrpc/server.go:81 connection{local:127.0.0.1:20001, remote:127.0.0.1:59593} panic error:"reflect: Call using map[string]interface {} as type *pkg.User", debug stack:goroutine 1684 [running]:
runtime/debug.Stack(0x0, 0x0, 0x0)
/usr/local/go/src/runtime/debug/stack.go:24 +0xa5
dubbo.apache.org/dubbo-go/v3/protocol/jsonrpc.(*Server).handlePkg.func1(0x5723fc8, 0xc0003ec030)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/jsonrpc/server.go:82 +0xd5
panic(0x538c660, 0xc000947990)
/usr/local/go/src/runtime/panic.go:971 +0x4c7
reflect.Value.call(0xc0004b0600, 0xc000010250, 0x13, 0x55ec16f, 0x4, 0xc000950ba0, 0x3, 0x4, 0x0, 0x0, ...)
/usr/local/go/src/reflect/value.go:406 +0x1bba
reflect.Value.Call(0xc0004b0600, 0xc000010250, 0x13, 0xc000950ba0, 0x3, 0x4, 0x0, 0x0, 0x0)
/usr/local/go/src/reflect/value.go:337 +0xcc
dubbo.apache.org/dubbo-go/v3/common/proxy/proxy_factory.(*ProxyInvoker).Invoke(0xc0000e43f0, 0x571a5f8, 0xc00038ab70, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/common/proxy/proxy_factory/default.go:145 +0x8e5
dubbo.apache.org/dubbo-go/v3/registry/protocol.(*wrappedInvoker).Invoke(0xc00052a840, 0x571a5c0, 0xc000950b40, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/registry/protocol/protocol.go:452 +0x6e
dubbo.apache.org/dubbo-go/v3/filter/gshutdown.(*Filter).Invoke(0xc000466be0, 0x571a5c0, 0xc000950b40, 0x571aba8, 0xc00052a840, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/filter/gshutdown/filter.go:56 +0x20f
dubbo.apache.org/dubbo-go/v3/protocol/protocolwrapper.(*FilterInvoker).Invoke(0xc00052a870, 0x571a5c0, 0xc000950b40, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/protocolwrapper/protocol_filter_wrapper.go:119 +0xb4
dubbo.apache.org/dubbo-go/v3/filter/execlmt.(*Filter).Invoke(0xc000010050, 0x571a5c0, 0xc000950b40, 0x571aac8, 0xc00052a870, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/filter/execlmt/filter.go:101 +0x4e2
dubbo.apache.org/dubbo-go/v3/protocol/protocolwrapper.(*FilterInvoker).Invoke(0xc00052a8a0, 0x571a5c0, 0xc000950b40, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/protocolwrapper/protocol_filter_wrapper.go:119 +0xb4
dubbo.apache.org/dubbo-go/v3/filter/generic.(*ServiceFilter).Invoke(0x5fbfd28, 0x571a5c0, 0xc000950b40, 0x571aac8, 0xc00052a8a0, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/filter/generic/service_filter.go:51 +0x1029
dubbo.apache.org/dubbo-go/v3/protocol/protocolwrapper.(*FilterInvoker).Invoke(0xc00052a8d0, 0x571a5c0, 0xc000950b40, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/protocolwrapper/protocol_filter_wrapper.go:119 +0xb4
dubbo.apache.org/dubbo-go/v3/filter/tps.(*Filter).Invoke(0x5fbfd28, 0x571a5c0, 0xc000950b40, 0x571aac8, 0xc00052a8d0, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/filter/tps/filter.go:69 +0x41d
dubbo.apache.org/dubbo-go/v3/protocol/protocolwrapper.(*FilterInvoker).Invoke(0xc00052a900, 0x571a5c0, 0xc000950b40, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/protocolwrapper/protocol_filter_wrapper.go:119 +0xb4
dubbo.apache.org/dubbo-go/v3/filter/accesslog.(*Filter).Invoke(0xc000010218, 0x571a5c0, 0xc000950b40, 0x571aac8, 0xc00052a900, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/filter/accesslog/filter.go:89 +0x1b7
dubbo.apache.org/dubbo-go/v3/protocol/protocolwrapper.(*FilterInvoker).Invoke(0xc00052a930, 0x571a5c0, 0xc000950b40, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/protocolwrapper/protocol_filter_wrapper.go:119 +0xb4
dubbo.apache.org/dubbo-go/v3/filter/token.(*Filter).Invoke(0x5fbfd28, 0x571a5c0, 0xc000950b40, 0x571aac8, 0xc00052a930, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/filter/token/filter.go:58 +0x57c
dubbo.apache.org/dubbo-go/v3/protocol/protocolwrapper.(*FilterInvoker).Invoke(0xc00052a960, 0x571a5c0, 0xc000950b40, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/protocolwrapper/protocol_filter_wrapper.go:119 +0xb4
dubbo.apache.org/dubbo-go/v3/filter/metrics.(*Filter).Invoke(0xc0004aaa38, 0x571a5c0, 0xc000950b40, 0x571aac8, 0xc00052a960, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/filter/metrics/filter.go:49 +0xb2
dubbo.apache.org/dubbo-go/v3/protocol/protocolwrapper.(*FilterInvoker).Invoke(0xc00052a990, 0x571a5c0, 0xc000950b40, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/protocolwrapper/protocol_filter_wrapper.go:119 +0xb4
dubbo.apache.org/dubbo-go/v3/filter/echo.(*Filter).Invoke(0x5fbfd28, 0x571a5c0, 0xc000950b40, 0x571aac8, 0xc00052a990, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/filter/echo/filter.go:54 +0x47c
dubbo.apache.org/dubbo-go/v3/protocol/protocolwrapper.(*FilterInvoker).Invoke(0xc00052a9c0, 0x571a5c0, 0xc000950b40, 0x57267e0, 0xc000e53110, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/protocolwrapper/protocol_filter_wrapper.go:119 +0xb4
dubbo.apache.org/dubbo-go/v3/protocol/jsonrpc.serveRequest(0x571a5c0, 0xc000950b40, 0xc00038a9f0, 0xc00096b200, 0x72, 0x200, 0x5723fc8, 0xc0003ec030, 0x0, 0x0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/jsonrpc/server.go:349 +0x9ce
dubbo.apache.org/dubbo-go/v3/protocol/jsonrpc.(*Server).handlePkg(0xc00007c180, 0x5723fc8, 0xc0003ec030)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/jsonrpc/server.go:178 +0xf6a
dubbo.apache.org/dubbo-go/v3/protocol/jsonrpc.(*Server).Start.func1.1(0x5723fc8, 0xc0003ec030)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/jsonrpc/server.go:243 +0x45
dubbo.apache.org/dubbo-go/v3/protocol/jsonrpc.accept.func1(0x5723fc8, 0xc0003ec030, 0xc0000d80b0)
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/jsonrpc/server.go:227 +0x85
created by dubbo.apache.org/dubbo-go/v3/protocol/jsonrpc.accept
/Users/phil/go/pkg/mod/dubbo.apache.org/dubbo-go/v3@v3.0.0-rc3.0.20211109121610-2ebc38bed562/protocol/jsonrpc/server.go:216 +0x3e8
```
**What you expected to happen**:
Server 正常执行 `GetUser` 方法，并返回结果，Client 正常输出日志信息
**How to reproduce it (as minimally and precisely as possible)**:
-
**Anything else we need to know?**:
可能原因：Dubbo-go 服务代理执行时，参数类型没有得到正确解析。
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[GitHub] [dubbo-go] PhilYue commented on issue #1582: [JSON-RPC] panic error:"reflect: Call using map[string]interface {} as type *pkg.User"
Posted by GitBox <gi...@apache.org>.
PhilYue commented on issue #1582:
URL: https://github.com/apache/dubbo-go/issues/1582#issuecomment-966047418
@PhilYue
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[GitHub] [dubbo-go] PhilYue edited a comment on issue #1582: [JSON-RPC] panic error:"reflect: Call using map[string]interface {} as type *pkg.User"
Posted by GitBox <gi...@apache.org>.
PhilYue edited a comment on issue #1582:
URL: https://github.com/apache/dubbo-go/issues/1582#issuecomment-966064892
[dubbo-go/common/proxy/proxy_factory/default.go#Invoke](https://github.com/apache/dubbo-go/blob/master/common/proxy/proxy_factory/default.go#L86)
```go
for i := 0; i < len(args); i++ {
t := reflect.ValueOf(args[i])
//if !t.IsValid() {
if t.IsValid() {
at := method.ArgsType()[i]
if at.Kind() == reflect.Ptr {
at = at.Elem()
}
t = reflect.New(at)
}
in = append(in, t)
}
```
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[GitHub] [dubbo-go] PhilYue commented on issue #1582: [JSON-RPC] panic error:"reflect: Call using map[string]interface {} as type *pkg.User"
Posted by GitBox <gi...@apache.org>.
PhilYue commented on issue #1582:
URL: https://github.com/apache/dubbo-go/issues/1582#issuecomment-966064892
```go
for i := 0; i < len(args); i++ {
t := reflect.ValueOf(args[i])
//if !t.IsValid() {
if t.IsValid() {
at := method.ArgsType()[i]
if at.Kind() == reflect.Ptr {
at = at.Elem()
}
t = reflect.New(at)
}
in = append(in, t)
}
```
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[GitHub] [dubbo-go] PhilYue commented on issue #1582: [JSON-RPC] panic error:"reflect: Call using map[string]interface {} as type *pkg.User"
Posted by GitBox <gi...@apache.org>.
PhilYue commented on issue #1582:
URL: https://github.com/apache/dubbo-go/issues/1582#issuecomment-990751301
suspend...
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[GitHub] [dubbo-go] justxuewei closed issue #1582: [JSON-RPC] panic error:"reflect: Call using map[string]interface {} as type *pkg.User"
Posted by GitBox <gi...@apache.org>.
justxuewei closed issue #1582:
URL: https://github.com/apache/dubbo-go/issues/1582
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