/
trigger.go
100 lines (76 loc) · 2.26 KB
/
trigger.go
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package riff
import (
"context"
syslog "log"
"github.com/TIBCOSoftware/flogo-lib/core/trigger"
"github.com/TIBCOSoftware/flogo-lib/logger"
// Import the aws-lambda-go. Required for dep to pull on app create
_ "github.com/aws/aws-lambda-go/lambda"
"github.com/TIBCOSoftware/flogo-lib/core/data"
)
// log is the default package logger
var log = logger.GetLogger("trigger-flogo-riff")
var singleton *RiffTrigger
// RiffTrigger AWS Riff trigger struct
type RiffTrigger struct {
metadata *trigger.Metadata
config *trigger.Config
handlers []*trigger.Handler
}
//NewFactory create a new Trigger factory
func NewFactory(md *trigger.Metadata) trigger.Factory {
return &RiffFactory{metadata: md}
}
// RiffFactory AWS Riff Trigger factory
type RiffFactory struct {
metadata *trigger.Metadata
}
//New Creates a new trigger instance for a given id
func (t *RiffFactory) New(config *trigger.Config) trigger.Trigger {
singleton = &RiffTrigger{metadata: t.metadata, config: config}
return singleton
}
// Metadata implements trigger.Trigger.Metadata
func (t *RiffTrigger) Metadata() *trigger.Metadata {
return t.metadata
}
func (t *RiffTrigger) Initialize(ctx trigger.InitContext) error {
t.handlers = ctx.GetHandlers()
return nil
}
func Invoke(input interface{}) (interface{}, error) {
log.Info("Starting Project Riff Trigger")
syslog.Println("Starting Project Riff Trigger")
log.Debugf("Received Input: '%+v'\n", input)
syslog.Printf("Received Input: '%+v'\n", input)
//select handler, use 0th for now
handler := singleton.handlers[0]
idata := map[string]interface{}{
"input": input,
}
results, err := handler.Handle(context.Background(), idata)
var replyData interface{}
if len(results) != 0 {
dataAttr, ok := results["output"]
if ok {
replyData = dataAttr.Value()
}
}
if err != nil {
log.Debugf("Riff Trigger Error: %s", err.Error())
syslog.Printf("Riff Trigger Error: %s", err.Error())
return nil, err
}
log.Debugf("Riff Trigger Reply: '%+v'\n", replyData)
syslog.Printf("Riff Trigger Reply: '%+v'\n", replyData)
//Workaround
strigifyData, _ := data.CoerceToString(replyData)
return strigifyData, err
}
func (t *RiffTrigger) Start() error {
return nil
}
// Stop implements util.Managed.Stop
func (t *RiffTrigger) Stop() error {
return nil
}