func (t *Template) Run() (result *task.Result, err error) {
result, err = task.DoRun(func(result *task.Result) (err error) {
result.Module = "template"
result.Op = "create"
result.Extra["path"] = t.Path
result.Extra["content"] = t.Content
result.Extra["data"] = t.Data
result.Extra["mode"] = fmt.Sprintf("%o", t.Mode)
tmpl, err := templateutil.NewWithString(t.Path, t.Content)
if err != nil {
return
}
changed, err := templateutil.WriteIfChanged(tmpl, t.Data, t.Path,
t.Mode)
if err != nil {
return
}
if changed {
result.Changed = true
} else {
result.Skipped = true
}
return
})
return
}
func TestWriteIfChanged(t *testing.T) {
tmpl, err := templateutil.NewWithString("sample1.tmpl", SAMPLE1_TMPL)
if err != nil {
t.Fatal(err)
}
f, err := ioutil.TempFile("", "output-")
if err != nil {
t.Fatal(err)
}
defer os.Remove(f.Name())
data := map[string]interface{}{
"ntp_servers": []string{
"ntp.nict.jp",
"ntp.jst.mfeed.ad.jp",
"ntp.ring.gr.jp",
},
}
changed, err := templateutil.WriteIfChanged(tmpl, data, f.Name(), 0644)
if err != nil {
t.Fatal(err)
}
if !changed {
t.Fatal("First write must change the file content")
}
changed, err = templateutil.WriteIfChanged(tmpl, data, f.Name(), 0644)
if err != nil {
t.Fatal(err)
}
if changed {
t.Fatal("Second write must not overwrite because the content is the same.")
}
}