Exemple #1
0
//
// look up a record in cloudant with the provided name
//
func find_record(name string) (*http.Response, error) {
	selector := `{
		"selector": {
			"_id": {
				"$gt": 0
			}, 
			"name": "` + name + `" 
		}
	}`
	return cadb.Post("records", selector, "_find")
}
Exemple #2
0
//
// POST /record
// update an existing record with a new value
// @param name
// @param value
//
func PostRecord(w http.ResponseWriter, r *http.Request) {
	// get name and value from request
	decoder := json.NewDecoder(r.Body)
	var f map[string]interface{}
	decoder.Decode(&f)
	name := f["name"].(string)
	value := f["value"].(string)
	name = strings.Trim(name, " ")
	value = strings.Trim(value, " ")
	// request docs with the same name from cloudant
	res, err := find_record(name)
	if err != nil {
		w.WriteHeader(500)
		//fmt.Printf("error reading from cloudant, routes.GetRecord: %s\n", err)
		return
	}
	// parse response from json
	buf := new(bytes.Buffer)
	buf.ReadFrom(res.Body)
	js := buf.String()
	var response Response
	err = json.Unmarshal([]byte(js), &response)
	if err != nil {
		w.WriteHeader(500)
		estr := fmt.Sprintf("error converting documents to json, routes.PostRecord: %s\n", err)
		fmt.Fprint(w, estr)
		//fmt.Println(estr)
		return
	}
	// check if docs matching name are found
	if len(response.Docs) > 0 {
		// doc found, now update it
		doc := response.Docs[0]
		doc.Value = value
		rec, _ := json.Marshal(doc)
		fmt.Println(string(rec))
		res, err := cadb.Post("records", string(rec), "")
		if err != nil {
			w.WriteHeader(500)
			fmt.Fprint(w, `{"error":"unable to update Record on cloudant"}`)
			//fmt.Printf("error reading from cloudant, routes.GetRecord: %s\n", err)
			return
		}
		fmt.Fprint(w, res)
	} else {
		w.WriteHeader(404)
		//fmt.Println("no records found that match name=" + name)
		fmt.Fprint(w, `{"error":"no Record found with name: `+name+`"}`)
	}
}
Exemple #3
0
//
// PUT /record
// add a new record to the database under a new unique name
// @param name
// @parma value
//
func PutRecord(w http.ResponseWriter, r *http.Request) {
	// get name and value from request
	decoder := json.NewDecoder(r.Body)
	var f map[string]interface{}
	decoder.Decode(&f)
	name := f["name"].(string)
	value := f["value"].(string)
	name = strings.Trim(name, " ")
	value = strings.Trim(value, " ")
	// request docs with the same name from cloudant
	res, err := find_record(name)
	if err != nil {
		w.WriteHeader(500)
		//fmt.Printf("error reading from cloudant, routes.GetRecord: %s\n", err)
		return
	}
	// parse response from json
	buf := new(bytes.Buffer)
	buf.ReadFrom(res.Body)
	js := buf.String()
	var response Response
	err = json.Unmarshal([]byte(js), &response)
	if err != nil {
		w.WriteHeader(500)
		estr := fmt.Sprintf("error converting documents to json, routes.GetRecord: %s\n", err)
		fmt.Fprint(w, estr)
		//fmt.Println(estr)
		return
	}
	// check if docs matching name are found
	if len(response.Docs) == 0 {
		record := `{"name":"` + name + `","value":"` + value + `"}`
		// create new record in cloudant
		res, err := cadb.Post("records", record, "")
		if err != nil {
			w.WriteHeader(500)
			//fmt.Println("error creating record which seemed to be unique")
			fmt.Fprint(w, `{"error":"error creating record which seemed to be unique"}`)
		}
		//fmt.Println(res)
		fmt.Fprint(w, res)
	} else {
		w.WriteHeader(400)
		//fmt.Println("a record already exists with name=" + name)
		fmt.Fprint(w, `{"error":"a Record already exists with name: '`+name+`'"}`)
	}
}