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tasktemplate.go
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89 lines (78 loc) · 2.31 KB
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/*
* === This file is part of ALICE O² ===
*
* Copyright 2018 CERN and copyright holders of ALICE O².
* Author: Teo Mrnjavac <teo.mrnjavac@cern.ch>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* In applying this license CERN does not waive the privileges and
* immunities granted to it by virtue of its status as an
* Intergovernmental Organization or submit itself to any jurisdiction.
*/
package workflow
import (
"text/template"
"errors"
"github.com/jinzhu/copier"
)
type taskTemplate struct {
taskRole
stringTemplates map[string]template.Template `yaml:"-,omitempty"`
}
func (at *taskTemplate) copy() copyable {
rCopy := taskTemplate{
taskRole: *at.taskRole.copy().(*taskRole),
}
copier.Copy(&rCopy.stringTemplates, &at.stringTemplates)
return &rCopy
}
func (tt *taskTemplate) UnmarshalYAML(unmarshal func(interface{}) error) (err error) {
type _taskTemplate taskTemplate
role := _taskTemplate{}
err = unmarshal(&role)
if err != nil {
return
}
tmpl := template.New(role.GetPath())
role.stringTemplates = make(map[string]template.Template)
// Fields to parse as templates:
for _, str := range []string{
role.LoadTaskClass,
role.Name,
} {
var tempTmpl *template.Template
tempTmpl, err = tmpl.Parse(str)
if err != nil {
return
}
role.stringTemplates[str] = *tempTmpl
}
*tt = taskTemplate(role)
return
}
func (tt *taskTemplate) generateRole(t templateMap) (c Role, err error) {
if tt == nil {
return nil, errors.New("cannot generate from nil sender")
}
// See NOTE for aggregatorTemplate.generateRole
tr := *tt.taskRole.copy().(*taskRole)
tf := templateFields{&tr.Name, &tr.LoadTaskClass}
err = tf.execute(tt.GetPath(), t, tt.stringTemplates)
if err != nil {
return
}
c = &tr
return
}