move extractor to micro
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
parent
0d3d13b7ab
commit
4209736cb8
122
extractor.go
122
extractor.go
@ -1,122 +0,0 @@
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package grpc
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import (
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"fmt"
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"reflect"
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"strings"
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"github.com/unistack-org/micro/v3/registry"
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)
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func extractValue(v reflect.Type, d int) *registry.Value {
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if d == 3 {
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return nil
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}
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if v == nil {
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return nil
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}
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if v.Kind() == reflect.Ptr {
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v = v.Elem()
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}
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arg := ®istry.Value{
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Name: v.Name(),
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Type: v.Name(),
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}
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switch v.Kind() {
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case reflect.Struct:
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for i := 0; i < v.NumField(); i++ {
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f := v.Field(i)
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val := extractValue(f.Type, d+1)
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if val == nil {
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continue
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}
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// if we can find a json tag use it
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if tags := f.Tag.Get("json"); len(tags) > 0 {
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parts := strings.Split(tags, ",")
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if parts[0] == "-" || parts[0] == "omitempty" {
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continue
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}
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val.Name = parts[0]
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}
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// if there's no name default it
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if len(val.Name) == 0 {
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val.Name = v.Field(i).Name
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}
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arg.Values = append(arg.Values, val)
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}
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case reflect.Slice:
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p := v.Elem()
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if p.Kind() == reflect.Ptr {
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p = p.Elem()
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}
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arg.Type = "[]" + p.Name()
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}
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return arg
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}
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func extractEndpoint(method reflect.Method) *registry.Endpoint {
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if method.PkgPath != "" {
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return nil
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}
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var rspType, reqType reflect.Type
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var stream bool
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mt := method.Type
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switch mt.NumIn() {
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case 3:
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reqType = mt.In(1)
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rspType = mt.In(2)
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case 4:
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reqType = mt.In(2)
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rspType = mt.In(3)
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default:
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return nil
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}
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// are we dealing with a stream?
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switch rspType.Kind() {
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case reflect.Func, reflect.Interface:
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stream = true
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}
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request := extractValue(reqType, 0)
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response := extractValue(rspType, 0)
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ep := ®istry.Endpoint{
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Name: method.Name,
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Request: request,
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Response: response,
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Metadata: make(map[string]string),
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}
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if stream {
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ep.Metadata = map[string]string{
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"stream": fmt.Sprintf("%v", stream),
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}
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}
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return ep
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}
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func extractSubValue(typ reflect.Type) *registry.Value {
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var reqType reflect.Type
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switch typ.NumIn() {
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case 1:
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reqType = typ.In(0)
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case 2:
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reqType = typ.In(1)
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case 3:
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reqType = typ.In(2)
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default:
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return nil
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}
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return extractValue(reqType, 0)
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}
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@ -1,65 +0,0 @@
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package grpc
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import (
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"context"
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"reflect"
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"testing"
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"github.com/unistack-org/micro/v3/registry"
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)
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type testHandler struct{}
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type testRequest struct{}
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type testResponse struct{}
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func (t *testHandler) Test(ctx context.Context, req *testRequest, rsp *testResponse) error {
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return nil
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}
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func TestExtractEndpoint(t *testing.T) {
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handler := &testHandler{}
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typ := reflect.TypeOf(handler)
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var endpoints []*registry.Endpoint
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for m := 0; m < typ.NumMethod(); m++ {
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if e := extractEndpoint(typ.Method(m)); e != nil {
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endpoints = append(endpoints, e)
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}
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}
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if i := len(endpoints); i != 1 {
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t.Errorf("Expected 1 endpoint, have %d", i)
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}
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if endpoints[0].Name != "Test" {
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t.Errorf("Expected handler Test, got %s", endpoints[0].Name)
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}
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if endpoints[0].Request == nil {
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t.Error("Expected non nil request")
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}
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if endpoints[0].Response == nil {
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t.Error("Expected non nil request")
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}
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if endpoints[0].Request.Name != "testRequest" {
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t.Errorf("Expected testRequest got %s", endpoints[0].Request.Name)
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}
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if endpoints[0].Response.Name != "testResponse" {
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t.Errorf("Expected testResponse got %s", endpoints[0].Response.Name)
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}
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if endpoints[0].Request.Type != "testRequest" {
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t.Errorf("Expected testRequest type got %s", endpoints[0].Request.Type)
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}
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if endpoints[0].Response.Type != "testResponse" {
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t.Errorf("Expected testResponse type got %s", endpoints[0].Response.Type)
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}
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}
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2
go.mod
2
go.mod
@ -6,7 +6,7 @@ require (
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github.com/golang/protobuf v1.4.2
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github.com/google/go-cmp v0.5.1 // indirect
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github.com/unistack-org/micro-codec-bytes v0.0.0-20200828083432-4e49e953d844
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github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20200920124807-9b11ea527aeb
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github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20201009132147-336868ed0d8d
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golang.org/x/net v0.0.0-20200904194848-62affa334b73
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golang.org/x/sys v0.0.0-20200803210538-64077c9b5642 // indirect
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golang.org/x/text v0.3.3 // indirect
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8
go.sum
8
go.sum
@ -51,6 +51,7 @@ github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDk
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github.com/cloudflare/cloudflare-go v0.10.2/go.mod h1:qhVI5MKwBGhdNU89ZRz2plgYutcJ5PCekLxXn56w6SY=
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github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
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github.com/cpu/goacmedns v0.0.1/go.mod h1:sesf/pNnCYwUevQEQfEwY0Y3DydlQWSGZbaMElOWxok=
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github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
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github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
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github.com/cpuguy83/go-md2man/v2 v2.0.0 h1:EoUDS0afbrsXAZ9YQ9jdu/mZ2sXgT1/2yyNng4PGlyM=
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github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
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@ -259,10 +260,13 @@ github.com/unistack-org/micro-codec-bytes v0.0.0-20200828083432-4e49e953d844/go.
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github.com/unistack-org/micro-config-cmd v0.0.0-20200909210346-ec89783dc46c/go.mod h1:6pm1cadbwsFcEW1ZbV5Fp0i3goR3TNfROMNSPih3I8k=
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github.com/unistack-org/micro-config-cmd v0.0.0-20200909210755-6e7e85eeab34 h1:VHc98t4SoiCF/jbkFu2e/j+IyJ/+MFQ1T+INNL7LubU=
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github.com/unistack-org/micro-config-cmd v0.0.0-20200909210755-6e7e85eeab34/go.mod h1:fT1gYn+TtfVZZ5tNx56bZIncJjmlji66g7GKdWua5hE=
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github.com/unistack-org/micro-config-cmd v0.0.0-20200920140133-0853deb2e5dc h1:hHAU3rgeiA0LaudfNdMLf9/jkOBeFxvJdnwXevviZF8=
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github.com/unistack-org/micro-config-cmd v0.0.0-20200920140133-0853deb2e5dc/go.mod h1:il8nz4ZEcX3Usyfrtwy+YtQcb7xSUSFJdSe8PBJ9gOA=
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github.com/unistack-org/micro/v3 v3.0.0-20200827083227-aa99378adc6e/go.mod h1:rPQbnry3nboAnMczj8B1Gzlcyv/HYoMZLgd3/3nttJ4=
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github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20200909210629-caec730248b1/go.mod h1:mmqHR9WelHUXqg2mELjsQ+FJHcWs6mNmXg+wEYO2T3c=
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github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20200920124807-9b11ea527aeb h1:ETCShJ27nTE7kMQgaf7S6p1Tbfr2tdGO6MYxZ2LTMWY=
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github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20200920124807-9b11ea527aeb/go.mod h1:HUzMG4Mcy97958VxWTg8zuazZgwQ/aoLZ8wtBVONwRE=
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github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20200920135754-1cbd1d2bad83/go.mod h1:HUzMG4Mcy97958VxWTg8zuazZgwQ/aoLZ8wtBVONwRE=
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github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20201009132147-336868ed0d8d h1:LcDlJMSPibasCxm8WNWM92bz+7NFX8StPfM+4u/fme8=
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github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20201009132147-336868ed0d8d/go.mod h1:aL+8VhSXpx0SuEeXPOWUo5BgS7kyvWYobeXFay90UUM=
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github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
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github.com/vultr/govultr v0.1.4/go.mod h1:9H008Uxr/C4vFNGLqKx232C206GL0PBHzOP0809bGNA=
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github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f/go.mod h1:N2zxlSyiKSe5eX1tZViRH5QA0qijqEDrYZiPEAiq3wU=
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2
grpc.go
2
grpc.go
@ -662,7 +662,7 @@ func (g *grpcServer) Subscribe(sb server.Subscriber) error {
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return fmt.Errorf("invalid subscriber: no handler functions")
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}
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if err := validateSubscriber(sb); err != nil {
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if err := server.ValidateSubscriber(sb); err != nil {
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return err
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}
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@ -30,7 +30,7 @@ func newRpcHandler(handler interface{}, opts ...server.HandlerOption) server.Han
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var endpoints []*registry.Endpoint
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for m := 0; m < typ.NumMethod(); m++ {
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if e := extractEndpoint(typ.Method(m)); e != nil {
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if e := registry.ExtractEndpoint(typ.Method(m)); e != nil {
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e.Name = name + "." + e.Name
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for k, v := range options.Metadata[e.Name] {
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@ -61,7 +61,7 @@ func newSubscriber(topic string, sub interface{}, opts ...server.SubscriberOptio
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endpoints = append(endpoints, ®istry.Endpoint{
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Name: "Func",
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Request: extractSubValue(typ),
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Request: registry.ExtractSubValue(typ),
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Metadata: map[string]string{
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"topic": topic,
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"subscriber": "true",
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@ -89,7 +89,7 @@ func newSubscriber(topic string, sub interface{}, opts ...server.SubscriberOptio
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endpoints = append(endpoints, ®istry.Endpoint{
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Name: name + "." + method.Name,
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Request: extractSubValue(method.Type),
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Request: registry.ExtractSubValue(method.Type),
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Metadata: map[string]string{
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"topic": topic,
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"subscriber": "true",
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@ -109,60 +109,6 @@ func newSubscriber(topic string, sub interface{}, opts ...server.SubscriberOptio
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}
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}
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func validateSubscriber(sub server.Subscriber) error {
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typ := reflect.TypeOf(sub.Subscriber())
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var argType reflect.Type
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if typ.Kind() == reflect.Func {
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name := "Func"
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switch typ.NumIn() {
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case 2:
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argType = typ.In(1)
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default:
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return fmt.Errorf("subscriber %v takes wrong number of args: %v required signature %s", name, typ.NumIn(), subSig)
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}
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if !isExportedOrBuiltinType(argType) {
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return fmt.Errorf("subscriber %v argument type not exported: %v", name, argType)
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}
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if typ.NumOut() != 1 {
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return fmt.Errorf("subscriber %v has wrong number of outs: %v require signature %s",
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name, typ.NumOut(), subSig)
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}
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if returnType := typ.Out(0); returnType != typeOfError {
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return fmt.Errorf("subscriber %v returns %v not error", name, returnType.String())
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}
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} else {
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hdlr := reflect.ValueOf(sub.Subscriber())
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name := reflect.Indirect(hdlr).Type().Name()
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for m := 0; m < typ.NumMethod(); m++ {
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method := typ.Method(m)
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switch method.Type.NumIn() {
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case 3:
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argType = method.Type.In(2)
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default:
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return fmt.Errorf("subscriber %v.%v takes wrong number of args: %v required signature %s",
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name, method.Name, method.Type.NumIn(), subSig)
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}
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if !isExportedOrBuiltinType(argType) {
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return fmt.Errorf("%v argument type not exported: %v", name, argType)
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}
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if method.Type.NumOut() != 1 {
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return fmt.Errorf(
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"subscriber %v.%v has wrong number of outs: %v require signature %s",
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name, method.Name, method.Type.NumOut(), subSig)
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}
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if returnType := method.Type.Out(0); returnType != typeOfError {
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return fmt.Errorf("subscriber %v.%v returns %v not error", name, method.Name, returnType.String())
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}
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}
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}
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return nil
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}
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func (g *grpcServer) createSubHandler(sb *subscriber, opts server.Options) broker.Handler {
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return func(p broker.Event) (err error) {
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defer func() {
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