forked from wallix/awless
/
helpers.go
62 lines (49 loc) · 1.22 KB
/
helpers.go
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package awsdriver
import (
"fmt"
"reflect"
"time"
"github.com/wallix/awless/logger"
"github.com/wallix/awless/template"
"github.com/wallix/awless/template/driver"
)
func DefaultTemplateEnv() *template.Env {
env := template.NewEnv()
env.DefLookupFunc = AWSLookupDefinitions
return env
}
func AWSLookupDefinitions(key string) (t template.Definition, ok bool) {
t, ok = AWSTemplatesDefinitions[key]
return
}
type driverCall struct {
d driver.Driver
fn interface{}
logger *logger.Logger
desc string
setters []setter
}
func (dc *driverCall) execute(input interface{}) (output interface{}, err error) {
defer func() {
if e := recover(); e != nil {
output = nil
err = fmt.Errorf("%s", e)
}
}()
for _, s := range dc.setters {
if err = s.set(input); err != nil {
return nil, err
}
}
fnVal := reflect.ValueOf(dc.fn)
values := []reflect.Value{reflect.ValueOf(input)}
start := time.Now()
results := fnVal.Call(values)
if err, ok := results[1].Interface().(error); ok && err != nil {
return nil, fmt.Errorf("%s: %s", dc.desc, err)
}
dc.logger.ExtraVerbosef("%s call took %s", dc.desc, time.Since(start))
dc.logger.Verbosef("%s done", dc.desc)
output = results[0].Interface()
return
}