#97 add As for Broker. #298

Merged
vtolstov merged 3 commits from kgorbunov/micro:#97 into master 2024-02-27 22:49:05 +03:00
3 changed files with 129 additions and 66 deletions
Showing only changes of commit c09674ae92 - Show all commits

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@ -1,34 +0,0 @@
package broker
import (
"reflect"
)
func As(b Broker, target any) bool {
if b == nil {
return false
}
if target == nil {
return false
}
val := reflect.ValueOf(target)
typ := val.Type()
if typ.Kind() != reflect.Ptr || val.IsNil() {
return false
}
targetType := typ.Elem()
if targetType.Kind() != reflect.Interface && !targetType.Implements(brokerType) {
return false
}
return as(b, val, targetType)
}
func as(b Broker, targetVal reflect.Value, targetType reflect.Type) bool {
if reflect.TypeOf(b).AssignableTo(targetType) {
targetVal.Elem().Set(reflect.ValueOf(b))
return true
}
return false
}
var brokerType = reflect.TypeOf((*Broker)(nil)).Elem()

77
micro.go Normal file
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@ -0,0 +1,77 @@
package micro
import (
"reflect"
"go.unistack.org/micro/v4/broker"
"go.unistack.org/micro/v4/client"
"go.unistack.org/micro/v4/codec"
"go.unistack.org/micro/v4/flow"
"go.unistack.org/micro/v4/fsm"
"go.unistack.org/micro/v4/logger"
"go.unistack.org/micro/v4/meter"
"go.unistack.org/micro/v4/register"
"go.unistack.org/micro/v4/resolver"
"go.unistack.org/micro/v4/router"
"go.unistack.org/micro/v4/selector"
"go.unistack.org/micro/v4/server"
"go.unistack.org/micro/v4/store"
"go.unistack.org/micro/v4/sync"
"go.unistack.org/micro/v4/tracer"
)
func As(b any, target any) bool {
if b == nil {
return false
}
if target == nil {
return false
}
val := reflect.ValueOf(target)
typ := val.Type()
if typ.Kind() != reflect.Ptr || val.IsNil() {
return false
}
targetType := typ.Elem()
if targetType.Kind() != reflect.Interface &&
!(targetType.Implements(brokerType) ||
targetType.Implements(loggerType) ||
targetType.Implements(clientType) ||
targetType.Implements(serverType) ||
targetType.Implements(codecType) ||
targetType.Implements(flowType) ||
targetType.Implements(fsmType) ||
targetType.Implements(meterType) ||
targetType.Implements(registerType) ||
targetType.Implements(resolverType) ||
targetType.Implements(selectorType) ||
targetType.Implements(storeType) ||
targetType.Implements(syncType) ||
targetType.Implements(tracerType) ||
targetType.Implements(serviceType) ||
targetType.Implements(routerType)) {
return false
}
if reflect.TypeOf(b).AssignableTo(targetType) {
val.Elem().Set(reflect.ValueOf(b))
return true
}
return false
}
var brokerType = reflect.TypeOf((*broker.Broker)(nil)).Elem()
var loggerType = reflect.TypeOf((*logger.Logger)(nil)).Elem()
var clientType = reflect.TypeOf((*client.Client)(nil)).Elem()
var serverType = reflect.TypeOf((*server.Server)(nil)).Elem()
var codecType = reflect.TypeOf((*codec.Codec)(nil)).Elem()
var flowType = reflect.TypeOf((*flow.Flow)(nil)).Elem()
var fsmType = reflect.TypeOf((*fsm.FSM)(nil)).Elem()
var meterType = reflect.TypeOf((*meter.Meter)(nil)).Elem()
var registerType = reflect.TypeOf((*register.Register)(nil)).Elem()
var resolverType = reflect.TypeOf((*resolver.Resolver)(nil)).Elem()
var routerType = reflect.TypeOf((*router.Router)(nil)).Elem()
var selectorType = reflect.TypeOf((*selector.Selector)(nil)).Elem()
var storeType = reflect.TypeOf((*store.Store)(nil)).Elem()
var syncType = reflect.TypeOf((*sync.Sync)(nil)).Elem()
var tracerType = reflect.TypeOf((*tracer.Tracer)(nil)).Elem()
var serviceType = reflect.TypeOf((*Service)(nil)).Elem()

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@ -1,4 +1,4 @@
package broker package micro
import ( import (
"context" "context"
@ -6,45 +6,18 @@ import (
"reflect" "reflect"
"testing" "testing"
"go.unistack.org/micro/v4/broker"
"go.unistack.org/micro/v4/fsm"
"go.unistack.org/micro/v4/options" "go.unistack.org/micro/v4/options"
) )
type bro struct {
name string
}
func (p *bro) Name() string { return p.name }
func (p *bro) Init(opts ...options.Option) error { return nil }
// Options returns broker options
func (p *bro) Options() Options { return Options{} }
// Address return configured address
func (p *bro) Address() string { return "" }
// Connect connects to broker
func (p *bro) Connect(ctx context.Context) error { return nil }
// Disconnect disconnect from broker
func (p *bro) Disconnect(ctx context.Context) error { return nil }
// Publish message, msg can be single broker.Message or []broker.Message
func (p *bro) Publish(ctx context.Context, msg interface{}, opts ...options.Option) error { return nil }
// Subscribe subscribes to topic message via handler
func (p *bro) Subscribe(ctx context.Context, topic string, handler interface{}, opts ...options.Option) (Subscriber, error) {
return nil, nil
}
// String type of broker
func (p *bro) String() string { return p.name }
func TestAs(t *testing.T) { func TestAs(t *testing.T) {
var b *bro var b *bro
broTarget := &bro{name: "kafka"} broTarget := &bro{name: "kafka"}
fsmTarget := &fsmT{name: "fsm"}
testCases := []struct { testCases := []struct {
b Broker b any
target any target any
match bool match bool
want any want any
@ -61,6 +34,12 @@ func TestAs(t *testing.T) {
false, false,
nil, nil,
}, },
{
fsmTarget,
&b,
false,
nil,
},
} }
for i, tc := range testCases { for i, tc := range testCases {
name := fmt.Sprintf("%d:As(Errorf(..., %v), %v)", i, tc.b, tc.target) name := fmt.Sprintf("%d:As(Errorf(..., %v), %v)", i, tc.b, tc.target)
@ -81,3 +60,44 @@ func TestAs(t *testing.T) {
}) })
} }
} }
type bro struct {
name string
}
func (p *bro) Name() string { return p.name }
func (p *bro) Init(opts ...options.Option) error { return nil }
// Options returns broker options
func (p *bro) Options() broker.Options { return broker.Options{} }
// Address return configured address
func (p *bro) Address() string { return "" }
// Connect connects to broker
func (p *bro) Connect(ctx context.Context) error { return nil }
// Disconnect disconnect from broker
func (p *bro) Disconnect(ctx context.Context) error { return nil }
// Publish message, msg can be single broker.Message or []broker.Message
func (p *bro) Publish(ctx context.Context, msg interface{}, opts ...options.Option) error { return nil }
// Subscribe subscribes to topic message via handler
func (p *bro) Subscribe(ctx context.Context, topic string, handler interface{}, opts ...options.Option) (broker.Subscriber, error) {
return nil, nil
}
// String type of broker
func (p *bro) String() string { return p.name }
type fsmT struct {
name string
}
func (f *fsmT) Start(ctx context.Context, a interface{}, o ...Option) (interface{}, error) {
return nil, nil
}
func (f *fsmT) Current() string { return f.name }
func (f *fsmT) Reset() {}
func (f *fsmT) State(s string, sf fsm.StateFunc) {}