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main.go
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main.go
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package main
import (
"context"
"fmt"
"github.com/baidu/openedge/protocol/mqtt"
openedge "github.com/baidu/openedge/sdk/openedge-go"
)
func main() {
openedge.Run(func(ctx openedge.Context) error {
var cfg Config
err := ctx.LoadConfig(&cfg)
if err != nil {
return err
}
functions := make(map[string]*Function)
for _, fi := range cfg.Functions {
functions[fi.Name] = NewFunction(fi, newProducer(ctx, fi))
}
defer func() {
for _, f := range functions {
f.Close()
}
}()
rulers := make([]*ruler, 0)
defer func() {
for _, ruler := range rulers {
ruler.close()
}
}()
for _, ri := range cfg.Rules {
f, ok := functions[ri.Function.Name]
if !ok {
return fmt.Errorf("function (%s) not found", f.cfg.Name)
}
c, err := ctx.NewHubClient(ri.ClientID, []mqtt.TopicInfo{ri.Subscribe})
if err != nil {
return fmt.Errorf("failed to create hub client: %s", err.Error())
}
rulers = append(rulers, newRuler(ri, c, f))
}
for _, ruler := range rulers {
err := ruler.start()
if err != nil {
return err
}
}
if cfg.Server.Address != "" {
svr, err := openedge.NewFServer(cfg.Server, func(ctx context.Context, msg *openedge.FunctionMessage) (*openedge.FunctionMessage, error) {
f, ok := functions[msg.FunctionName]
if !ok {
return nil, fmt.Errorf("function (%s) not found", msg.FunctionName)
}
return f.Call(msg)
})
if err != nil {
return err
}
defer svr.Close()
}
ctx.Wait()
return nil
})
}