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activity.go
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activity.go
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/*
* BSD 3-Clause License
* Copyright © 2020. TIBCO Software Inc.
* This file is subject to the license terms contained
* in the license file that is distributed with this file.
*/
package execgo
import (
"fmt"
"io/ioutil"
"net/http"
"strings"
"github.com/TIBCOSoftware/flogo-lib/core/activity"
"github.com/TIBCOSoftware/flogo-lib/logger"
"github.com/novalagung/golpal"
)
const (
ivInput = "Input"
ivScriptURL = "ScriptURL"
ovOutput = "Output"
)
var activityLog = logger.GetLogger("Scripting-activity-GO")
type execgoActivity struct {
metadata *activity.Metadata
}
//NewActivity TCI Wi Activity
func NewActivity(metadata *activity.Metadata) activity.Activity {
return &execgoActivity{metadata: metadata}
}
func (a *execgoActivity) Metadata() *activity.Metadata {
return a.metadata
}
func (a *execgoActivity) Eval(context activity.Context) (done bool, err error) {
activityLog.Info("Executing GO Scripting activity")
//Read Inputs
if context.GetInput(ivInput) == nil {
// ivInput string is not configured
// return error to the engine
return false, activity.NewError("Scripting ivInput string is not configured", "Scripting-GO-4001", nil)
}
input := context.GetInput(ivInput).(string)
if context.GetInput(ivScriptURL) == nil {
// APIsecret string is not configured
// return error to the engine
return false, activity.NewError("Scripting URL string is not configured", "Scripting-GO-4002", nil)
}
scriptURL := context.GetInput(ivScriptURL).(string)
// execute validation - Start
// load Script from Web
res, err := http.Get(scriptURL)
if err != nil {
return false, activity.NewError("Scripting URL not found", "Scripting-GO-4003", nil)
}
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
var script = string(body)
// execute
output := rungo(input, script)
// Output
context.SetOutput(ovOutput, output)
return true, nil
}
func rungo(in string, script string) string {
script = strings.Replace(script, "{input}", in, 1)
output, err := golpal.New().ExecuteSimple(script)
if err != nil {
fmt.Println(err)
}
ret := output
return ret
}