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util/wrapper: Add Static Client wrapper (#1685)

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* util/wrapper: Add Static Client wrapper

* util/wrapper/static: pass address to stream too

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* add static client wrapper tests

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* server: fix error message spaces between words

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

* server/{rpc,grpc}: replace log.Error with log.Errorf

* server/grpc: fix log typo

* server/rpc: fix log typo

Co-authored-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
ben-toogood 2020-06-05 10:18:35 +01:00 committed by Dominic Wong
parent e5136332e3
commit 8dfd93e915
5 changed files with 107 additions and 17 deletions
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2
go.mod
View File

@ -68,7 +68,7 @@ require (
golang.org/x/time v0.0.0-20191024005414-555d28b269f0 // indirect
google.golang.org/genproto v0.0.0-20191216164720-4f79533eabd1
google.golang.org/grpc v1.26.0
google.golang.org/protobuf v1.22.0 // indirect
google.golang.org/protobuf v1.22.0
gopkg.in/telegram-bot-api.v4 v4.6.4
sigs.k8s.io/yaml v1.1.0 // indirect
)

16
server/grpc/server.go
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@ -87,7 +87,7 @@ func prepareEndpoint(method reflect.Method) *methodType {
contextType = mtype.In(1)
default:
if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
logger.Error("method", mname, "of", mtype, "has wrong number of ins:", mtype.NumIn())
logger.Errorf("method %v of %v has wrong number of ins: %v", mname, mtype, mtype.NumIn())
}
return nil
}
@ -97,7 +97,7 @@ func prepareEndpoint(method reflect.Method) *methodType {
streamType := reflect.TypeOf((*server.Stream)(nil)).Elem()
if !argType.Implements(streamType) {
if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
logger.Error(mname, "argument does not implement Streamer interface:", argType)
logger.Errorf("%v argument does not implement Streamer interface: %v", mname, argType)
}
return nil
}
@ -107,14 +107,14 @@ func prepareEndpoint(method reflect.Method) *methodType {
// First arg need not be a pointer.
if !isExportedOrBuiltinType(argType) {
if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
logger.Error(mname, "argument type not exported:", argType)
logger.Errorf("%v argument type not exported: %v", mname, argType)
}
return nil
}
if replyType.Kind() != reflect.Ptr {
if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
logger.Error("method", mname, "reply type not a pointer:", replyType)
logger.Errorf("method %v reply type not a pointer: %v", mname, replyType)
}
return nil
}
@ -122,7 +122,7 @@ func prepareEndpoint(method reflect.Method) *methodType {
// Reply type must be exported.
if !isExportedOrBuiltinType(replyType) {
if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
logger.Error("method", mname, "reply type not exported:", replyType)
logger.Errorf("method %v reply type not exported: %v", mname, replyType)
}
return nil
}
@ -131,14 +131,14 @@ func prepareEndpoint(method reflect.Method) *methodType {
// Endpoint() needs one out.
if mtype.NumOut() != 1 {
if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
logger.Error("method", mname, "has wrong number of outs:", mtype.NumOut())
logger.Errorf("method %v has wrong number of outs: %v", mname, mtype.NumOut())
}
return nil
}
// The return type of the method must be error.
if returnType := mtype.Out(0); returnType != typeOfError {
if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
logger.Error("method", mname, "returns", returnType.String(), "not error")
logger.Errorf("method %v returns %v not error", mname, returnType.String())
}
return nil
}
@ -156,7 +156,7 @@ func (server *rServer) register(rcvr interface{}) error {
s.rcvr = reflect.ValueOf(rcvr)
sname := reflect.Indirect(s.rcvr).Type().Name()
if sname == "" {
logger.Fatal("rpc: no service name for type", s.typ.String())
logger.Fatalf("rpc: no service name for type %v", s.typ.String())
}
if !isExported(sname) {
s := "rpc Register: type " + sname + " is not exported"

16
server/rpc_router.go
View File

@ -140,7 +140,7 @@ func prepareMethod(method reflect.Method) *methodType {
replyType = mtype.In(3)
contextType = mtype.In(1)
default:
log.Error("method", mname, "of", mtype, "has wrong number of ins:", mtype.NumIn())
log.Errorf("method %v of %v has wrong number of ins: %v", mname, mtype, mtype.NumIn())
return nil
}
@ -148,7 +148,7 @@ func prepareMethod(method reflect.Method) *methodType {
// check stream type
streamType := reflect.TypeOf((*Stream)(nil)).Elem()
if !argType.Implements(streamType) {
log.Error(mname, "argument does not implement Stream interface:", argType)
log.Errorf("%v argument does not implement Stream interface: %v", mname, argType)
return nil
}
} else {
@ -156,30 +156,30 @@ func prepareMethod(method reflect.Method) *methodType {
// First arg need not be a pointer.
if !isExportedOrBuiltinType(argType) {
log.Error(mname, "argument type not exported:", argType)
log.Errorf("%v argument type not exported: %v", mname, argType)
return nil
}
if replyType.Kind() != reflect.Ptr {
log.Error("method", mname, "reply type not a pointer:", replyType)
log.Errorf("method %v reply type not a pointer: %v", mname, replyType)
return nil
}
// Reply type must be exported.
if !isExportedOrBuiltinType(replyType) {
log.Error("method", mname, "reply type not exported:", replyType)
log.Errorf("method %v reply type not exported: %v", mname, replyType)
return nil
}
}
// Method needs one out.
if mtype.NumOut() != 1 {
log.Error("method", mname, "has wrong number of outs:", mtype.NumOut())
log.Errorf("method %v has wrong number of outs: %v", mname, mtype.NumOut())
return nil
}
// The return type of the method must be error.
if returnType := mtype.Out(0); returnType != typeOfError {
log.Error("method", mname, "returns", returnType.String(), "not error")
log.Errorf("method %v returns %v not error", mname, returnType.String())
return nil
}
return &methodType{method: method, ArgType: argType, ReplyType: replyType, ContextType: contextType, stream: stream}
@ -508,7 +508,7 @@ func (router *router) ProcessMessage(ctx context.Context, msg Message) (err erro
defer func() {
// recover any panics
if r := recover(); r != nil {
log.Error("panic recovered: ", r)
log.Errorf("panic recovered: %v", r)
log.Error(string(debug.Stack()))
err = merrors.InternalServerError("go.micro.server", "panic recovered: %v", r)
}

18
util/wrapper/wrapper.go
View File

@ -292,3 +292,21 @@ func (c *cacheWrapper) Call(ctx context.Context, req client.Request, rsp interfa
func CacheClient(cacheFn func() *client.Cache, c client.Client) client.Client {
return &cacheWrapper{cacheFn, c}
}
type staticClient struct {
address string
client.Client
}
func (s *staticClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
return s.Client.Call(ctx, req, rsp, append(opts, client.WithAddress(s.address))...)
}
func (s *staticClient) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
return s.Client.Stream(ctx, req, append(opts, client.WithAddress(s.address))...)
}
// StaticClient sets an address on every call
func StaticClient(address string, c client.Client) client.Client {
return &staticClient{address, c}
}

72
util/wrapper/wrapper_static_client_test.go Normal file
View File

@ -0,0 +1,72 @@
package wrapper_test
import (
"context"
"testing"
"github.com/micro/go-micro/v2/broker"
bmemory "github.com/micro/go-micro/v2/broker/memory"
"github.com/micro/go-micro/v2/client"
rmemory "github.com/micro/go-micro/v2/registry/memory"
"github.com/micro/go-micro/v2/server"
tmemory "github.com/micro/go-micro/v2/transport/memory"
wrapper "github.com/micro/go-micro/v2/util/wrapper"
)
type TestFoo struct {
}
type TestReq struct{}
type TestRsp struct {
Data string
}
func (h *TestFoo) Bar(ctx context.Context, req *TestReq, rsp *TestRsp) error {
rsp.Data = "pass"
return nil
}
func TestStaticClientWrapper(t *testing.T) {
var err error
req := client.NewRequest("go.micro.service.foo", "TestFoo.Bar", &TestReq{}, client.WithContentType("application/json"))
rsp := &TestRsp{}
reg := rmemory.NewRegistry()
brk := bmemory.NewBroker(broker.Registry(reg))
tr := tmemory.NewTransport()
srv := server.NewServer(
server.Broker(brk),
server.Registry(reg),
server.Name("go.micro.service.foo"),
server.Address("127.0.0.1:0"),
server.Transport(tr),
)
if err = srv.Handle(srv.NewHandler(&TestFoo{})); err != nil {
t.Fatal(err)
}
if err = srv.Start(); err != nil {
t.Fatal(err)
}
cli := client.NewClient(
client.Registry(reg),
client.Broker(brk),
client.Transport(tr),
)
w1 := wrapper.StaticClient("xxx_localhost:12345", cli)
if err = w1.Call(context.TODO(), req, nil); err == nil {
t.Fatal("address xxx_#localhost:12345 must not exists and call must be failed")
}
w2 := wrapper.StaticClient(srv.Options().Address, cli)
if err = w2.Call(context.TODO(), req, rsp); err != nil {
t.Fatal(err)
} else if rsp.Data != "pass" {
t.Fatalf("something wrong with response: %#+v", rsp)
}
}