Exemple #1
0
// logStackOnRecover is the default RecoverHandleFunction and is called
// when DoNotRecover is false and the recoverHandleFunc is not set for the container.
// Default implementation logs the stacktrace and writes the stacktrace on the response.
// This may be a security issue as it exposes sourcecode information.
func logStackOnRecover(panicReason interface{}, httpWriter http.ResponseWriter) {
	var buffer bytes.Buffer
	buffer.WriteString(fmt.Sprintf("[restful] recover from panic situation: - %v\r\n", panicReason))
	for i := 2; ; i += 1 {
		_, file, line, ok := runtime.Caller(i)
		if !ok {
			break
		}
		buffer.WriteString(fmt.Sprintf("    %s:%d\r\n", file, line))
	}
	log.Print(buffer.String())
	httpWriter.WriteHeader(http.StatusInternalServerError)
	httpWriter.Write(buffer.Bytes())
}
// ReturnsError is deprecated, use Returns instead.
func (b *RouteBuilder) ReturnsError(code int, message string, model interface{}) *RouteBuilder {
	log.Print("ReturnsError is deprecated, use Returns instead.")
	return b.Returns(code, message, model)
}
Exemple #3
0
// Dispatch the incoming Http Request to a matching WebService.
func (c *Container) dispatch(httpWriter http.ResponseWriter, httpRequest *http.Request) {
	writer := httpWriter

	// CompressingResponseWriter should be closed after all operations are done
	defer func() {
		if compressWriter, ok := writer.(*CompressingResponseWriter); ok {
			compressWriter.Close()
		}
	}()

	// Instal panic recovery unless told otherwise
	if !c.doNotRecover { // catch all for 500 response
		defer func() {
			if r := recover(); r != nil {
				c.recoverHandleFunc(r, writer)
				return
			}
		}()
	}
	// Install closing the request body (if any)
	defer func() {
		if nil != httpRequest.Body {
			httpRequest.Body.Close()
		}
	}()

	// Detect if compression is needed
	// assume without compression, test for override
	if c.contentEncodingEnabled {
		doCompress, encoding := wantsCompressedResponse(httpRequest)
		if doCompress {
			var err error
			writer, err = NewCompressingResponseWriter(httpWriter, encoding)
			if err != nil {
				log.Print("[restful] unable to install compressor: ", err)
				httpWriter.WriteHeader(http.StatusInternalServerError)
				return
			}
		}
	}
	// Find best match Route ; err is non nil if no match was found
	var webService *WebService
	var route *Route
	var err error
	func() {
		c.webServicesLock.RLock()
		defer c.webServicesLock.RUnlock()
		webService, route, err = c.router.SelectRoute(
			c.webServices,
			httpRequest)
	}()
	if err != nil {
		// a non-200 response has already been written
		// run container filters anyway ; they should not touch the response...
		chain := FilterChain{Filters: c.containerFilters, Target: func(req *Request, resp *Response) {
			switch err.(type) {
			case ServiceError:
				ser := err.(ServiceError)
				c.serviceErrorHandleFunc(ser, req, resp)
			}
			// TODO
		}}
		chain.ProcessFilter(NewRequest(httpRequest), NewResponse(writer))
		return
	}
	wrappedRequest, wrappedResponse := route.wrapRequestResponse(writer, httpRequest)
	// pass through filters (if any)
	if len(c.containerFilters)+len(webService.filters)+len(route.Filters) > 0 {
		// compose filter chain
		allFilters := []FilterFunction{}
		allFilters = append(allFilters, c.containerFilters...)
		allFilters = append(allFilters, webService.filters...)
		allFilters = append(allFilters, route.Filters...)
		chain := FilterChain{Filters: allFilters, Target: func(req *Request, resp *Response) {
			// handle request by route after passing all filters
			route.Function(wrappedRequest, wrappedResponse)
		}}
		chain.ProcessFilter(wrappedRequest, wrappedResponse)
	} else {
		// no filters, handle request by route
		route.Function(wrappedRequest, wrappedResponse)
	}
}