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task2.go
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task2.go
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// Copyright ©2017 The go-hep Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"reflect"
"go-hep.org/x/hep/fwk"
)
type task2 struct {
fwk.TaskBase
fct func(f float64) float64
}
func (tsk *task2) Configure(ctx fwk.Context) error {
var err error
msg := ctx.Msg()
msg.Infof("configure...\n")
msg.Infof("configure... [done]\n")
return err
}
func (tsk *task2) StartTask(ctx fwk.Context) error {
msg := ctx.Msg()
msg.Infof("start...\n")
return nil
}
func (tsk *task2) StopTask(ctx fwk.Context) error {
msg := ctx.Msg()
msg.Infof("stop...\n")
return nil
}
func (tsk *task2) Process(ctx fwk.Context) error {
store := ctx.Store()
msg := ctx.Msg()
msg.Infof("proc...\n")
v, err := store.Get("floats1")
if err != nil {
return err
}
v = tsk.fct(v.(float64))
err = store.Put("massaged_floats1", v)
if err != nil {
return err
}
return nil
}
func init() {
fwk.Register(reflect.TypeOf(task2{}),
func(typ, name string, mgr fwk.App) (fwk.Component, error) {
var err error
tsk := &task2{
TaskBase: fwk.NewTask(typ, name, mgr),
}
tsk.fct = func(f float64) float64 {
return f * f
}
err = tsk.DeclProp("Fct", &tsk.fct)
if err != nil {
return nil, err
}
err = tsk.DeclInPort("floats1", reflect.TypeOf(float64(1.0)))
if err != nil {
return nil, err
}
err = tsk.DeclOutPort("massaged_floats1", reflect.TypeOf(float64(1.0)))
if err != nil {
return nil, err
}
return tsk, err
},
)
}