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handle.go
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handle.go
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package async
import (
"context"
"fmt"
"reflect"
"sync"
)
type ParamPool interface {
Get() *Param
Put(*Param)
}
type ManagerExecutor interface {
Register(executors ...Executor) error
Run(ctx context.Context, param *Param) error
}
// Executor your business should implement it
type Executor interface {
SafeCopy() Executor
ID() string
Run(ctx context.Context, data []byte) error
}
type Param struct {
Name string `json:"name" binding:"required"`
Metadata map[string]interface{} `json:"metadata"`
Data []byte `json:"data"`
}
func NewParamPool() ParamPool {
return &defaultParamPool{pool: sync.Pool{New: func() interface{} {
return &Param{
Name: "",
Metadata: make(map[string]interface{}),
Data: make([]byte, 0),
}
}}}
}
type defaultParamPool struct {
pool sync.Pool
}
func (d *defaultParamPool) Get() *Param {
v, ok := d.pool.Get().(*Param)
if !ok {
return &Param{
Name: "",
Metadata: make(map[string]interface{}),
Data: make([]byte, 0),
}
}
return v
}
func (d *defaultParamPool) Put(param *Param) {
param.Name = ""
for key := range param.Metadata {
delete(param.Metadata, key)
}
param.Data = param.Data[:0]
d.pool.Put(param)
}
func NewManager() ManagerExecutor {
return &manager{model: make(map[string]Executor)}
}
type manager struct {
model map[string]Executor
}
func (m *manager) register(v Executor) error {
var (
vt = reflect.TypeOf(v)
name string
)
switch vt.Kind() {
case reflect.Struct:
name = vt.String()
case reflect.Ptr:
name = vt.Elem().String()
default:
return fmt.Errorf("not support %s", vt.String())
}
if _, ok := m.model[name]; ok {
return fmt.Errorf("%s is enable", name)
}
m.model[name] = v
return nil
}
func (m *manager) Register(executors ...Executor) error {
for _, executor := range executors {
if err := m.register(executor); err != nil {
return err
}
}
return nil
}
func (m *manager) Run(ctx context.Context, param *Param) error {
v, ok := m.model[param.Name]
if !ok {
return fmt.Errorf("must register model %s", param.Name)
}
return v.SafeCopy().Run(ctx, param.Data)
}