func getKey(serv OrchioReadService, name, key, ref string) string {
data, mdata, err := datastore.GetKey(name, key, ref)
logError("Orchio::getKey:", err)
responseCode := 200
response := updateResponse(serv.ResponseBuilder(), "")
// Guard clause for 404 and 500 errors.
if mdata == "" {
var msgCode string
if data == "" {
responseCode = 404
msgCode = "items_not_found"
} else {
responseCode = 500
msgCode = "internal_error"
}
errorMsgBody := refErrorMsgBody(responseCode, msgCode, name, key, ref)
completeTheResponse(response, responseCode, errorMsgBody)
return ""
}
if ref == "" {
var tmpMdata datastore.Metadata
if err := json.Unmarshal([]byte(mdata), &tmpMdata); err == nil {
ref = tmpMdata.Ref
}
}
response.AddHeader("Content-Location", locationString(name, key, ref))
response.AddHeader("Etag", strconv.Quote(ref))
completeTheResponse(response, responseCode, data)
return ""
}
func checkRefValue(name, key, ref string) int {
data, _, err := datastore.GetKey(name, key, ref)
if err != nil {
return 500
} else if data == "" {
return 404
}
return 0
}
func getRefValue(name, key string) string {
if _, mdata, err := datastore.GetKey(name, key, ""); err == nil {
if mdata != "" {
var jmctmp datastore.Metadata
if err := json.Unmarshal([]byte(mdata), &jmctmp); err == nil {
return jmctmp.Ref
}
}
}
return ""
}
func itemAlreadyPresent(name, key string) bool {
if data, _, err := datastore.GetKey(name, key, ""); err == nil {
return (data != "")
}
return false
}