Golang Code Examples

Example #1

File: http.go Project: cursesun/nomad

// wrap is used to wrap functions to make them more convenient
func (s *HTTPServer) wrap(handler func(resp http.ResponseWriter, req *http.Request) (interface{}, error)) func(resp http.ResponseWriter, req *http.Request) {
	f := func(resp http.ResponseWriter, req *http.Request) {
		setHeaders(resp, s.agent.config.HTTPAPIResponseHeaders)
		// Invoke the handler
		reqURL := req.URL.String()
		start := time.Now()
		defer func() {
			s.logger.Printf("[DEBUG] http: Request %v (%v)", reqURL, time.Now().Sub(start))
		}()
		obj, err := handler(resp, req)

		// Check for an error
	HAS_ERR:
		if err != nil {
			s.logger.Printf("[ERR] http: Request %v, error: %v", reqURL, err)
			code := 500
			if http, ok := err.(HTTPCodedError); ok {
				code = http.Code()
			}
			resp.WriteHeader(code)
			resp.Write([]byte(err.Error()))
			return
		}

		prettyPrint := false
		if v, ok := req.URL.Query()["pretty"]; ok {
			if len(v) > 0 && (len(v[0]) == 0 || v[0] != "0") {
				prettyPrint = true
			}
		}

		// Write out the JSON object
		if obj != nil {
			var buf bytes.Buffer
			if prettyPrint {
				enc := codec.NewEncoder(&buf, jsonHandlePretty)
				err = enc.Encode(obj)
				if err == nil {
					buf.Write([]byte("\n"))
				}
			} else {
				enc := codec.NewEncoder(&buf, jsonHandle)
				err = enc.Encode(obj)
			}
			if err != nil {
				goto HAS_ERR
			}
			resp.Header().Set("Content-Type", "application/json")
			resp.Write(buf.Bytes())
		}
	}
	return f
}

Example #2

File: http.go Project: RudyJessop/nomad

// wrap is used to wrap functions to make them more convenient
func (s *HTTPServer) wrap(handler func(resp http.ResponseWriter, req *http.Request) (interface{}, error)) func(resp http.ResponseWriter, req *http.Request) {
	f := func(resp http.ResponseWriter, req *http.Request) {
		setHeaders(resp, s.agent.config.HTTPAPIResponseHeaders)
		// Invoke the handler
		reqURL := req.URL.String()
		start := time.Now()
		defer func() {
			s.logger.Printf("[DEBUG] http: Request %v (%v)", reqURL, time.Now().Sub(start))
		}()
		obj, err := handler(resp, req)

		// Check for an error
	HAS_ERR:
		if err != nil {
			s.logger.Printf("[ERR] http: Request %v, error: %v", reqURL, err)
			code := 500
			if http, ok := err.(HTTPCodedError); ok {
				code = http.Code()
			}
			resp.WriteHeader(code)
			resp.Write([]byte(err.Error()))
			return
		}

		prettyPrint := false
		if _, ok := req.URL.Query()["pretty"]; ok {
			prettyPrint = true
		}

		// Write out the JSON object
		if obj != nil {
			var buf []byte
			if prettyPrint {
				buf, err = json.MarshalIndent(obj, "", "    ")
			} else {
				buf, err = json.Marshal(obj)
			}
			if err != nil {
				goto HAS_ERR
			}
			resp.Header().Set("Content-Type", "application/json")
			resp.Write(buf)
		}
	}
	return f
}