Golang log.Printf函數代碼示例

// Build creates a new Route using the specification details collected by the RouteBuilder
func (b *RouteBuilder) Build() Route {
	pathExpr, err := newPathExpression(b.currentPath)
	if err != nil {
		log.Printf("[restful] Invalid path:%s because:%v", b.currentPath, err)
		os.Exit(1)
	}
	if b.function == nil {
		log.Printf("[restful] No function specified for route:" + b.currentPath)
		os.Exit(1)
	}
	operationName := b.operation
	if len(operationName) == 0 && b.function != nil {
		// extract from definition
		operationName = nameOfFunction(b.function)
	}
	route := Route{
		Method:         b.httpMethod,
		Path:           concatPath(b.rootPath, b.currentPath),
		Produces:       b.produces,
		Consumes:       b.consumes,
		Function:       b.function,
		Filters:        b.filters,
		relativePath:   b.currentPath,
		pathExpr:       pathExpr,
		Doc:            b.doc,
		Notes:          b.notes,
		Operation:      operationName,
		ParameterDocs:  b.parameters,
		ResponseErrors: b.errorMap,
		ReadSample:     b.readSample,
		WriteSample:    b.writeSample}
	route.postBuild()
	return route
}

// compilePathExpression ensures that the path is compiled into a RegEx for those routers that need it.
func (w *WebService) compilePathExpression() {
	compiled, err := newPathExpression(w.rootPath)
	if err != nil {
		log.Printf("[restful] invalid path:%s because:%v", w.rootPath, err)
		os.Exit(1)
	}
	w.pathExpr = compiled
}

// compilePathExpression ensures that the path is compiled into a RegEx for those routers that need it.
func (w *WebService) compilePathExpression() {
	if len(w.rootPath) == 0 {
		w.Path("/") // lazy initialize path
	}
	compiled, err := newPathExpression(w.rootPath)
	if err != nil {
		log.Printf("[restful] invalid path:%s because:%v", w.rootPath, err)
		os.Exit(1)
	}
	w.pathExpr = compiled
}

// Add a WebService to the Container. It will detect duplicate root paths and panic in that case.
func (c *Container) Add(service *WebService) *Container {
	c.webServicesLock.Lock()
	defer c.webServicesLock.Unlock()
	// If registered on root then no additional specific mapping is needed
	if !c.isRegisteredOnRoot {
		pattern := c.fixedPrefixPath(service.RootPath())
		// check if root path registration is needed
		if "/" == pattern || "" == pattern {
			c.ServeMux.HandleFunc("/", c.dispatch)
			c.isRegisteredOnRoot = true
		} else {
			// detect if registration already exists
			alreadyMapped := false
			for _, each := range c.webServices {
				if each.RootPath() == service.RootPath() {
					alreadyMapped = true
					break
				}
			}
			if !alreadyMapped {
				c.ServeMux.HandleFunc(pattern, c.dispatch)
				if !strings.HasSuffix(pattern, "/") {
					c.ServeMux.HandleFunc(pattern+"/", c.dispatch)
				}
			}
		}
	}
	// cannot have duplicate root paths
	for _, each := range c.webServices {
		if each.RootPath() == service.RootPath() {
			log.Printf("[restful] WebService with duplicate root path detected:['%v']", each)
			os.Exit(1)
		}
	}
	// if rootPath was not set then lazy initialize it
	if len(service.rootPath) == 0 {
		service.Path("/")
	}
	c.webServices = append(c.webServices, service)
	return c
}

// Add a WebService to the Container. It will detect duplicate root paths and exit in that case.
func (c *Container) Add(service *WebService) *Container {
	c.webServicesLock.Lock()
	defer c.webServicesLock.Unlock()

	// if rootPath was not set then lazy initialize it
	if len(service.rootPath) == 0 {
		service.Path("/")
	}

	// cannot have duplicate root paths
	for _, each := range c.webServices {
		if each.RootPath() == service.RootPath() {
			log.Printf("[restful] WebService with duplicate root path detected:['%v']", each)
			os.Exit(1)
		}
	}

	// If not registered on root then add specific mapping
	if !c.isRegisteredOnRoot {
		c.isRegisteredOnRoot = c.addHandler(service, c.ServeMux)
	}
	c.webServices = append(c.webServices, service)
	return c
}

func (c *Container) Remove(ws *WebService) error {
	if c.ServeMux == http.DefaultServeMux {
		errMsg := fmt.Sprintf("[restful] cannot remove a WebService from a Container using the DefaultServeMux: ['%v']", ws)
		log.Printf(errMsg)
		return errors.New(errMsg)
	}
	c.webServicesLock.Lock()
	defer c.webServicesLock.Unlock()
	// build a new ServeMux and re-register all WebServices
	newServeMux := http.NewServeMux()
	newServices := []*WebService{}
	newIsRegisteredOnRoot := false
	for _, each := range c.webServices {
		if each.rootPath != ws.rootPath {
			// If not registered on root then add specific mapping
			if !newIsRegisteredOnRoot {
				newIsRegisteredOnRoot = c.addHandler(each, newServeMux)
			}
			newServices = append(newServices, each)
		}
	}
	c.webServices, c.ServeMux, c.isRegisteredOnRoot = newServices, newServeMux, newIsRegisteredOnRoot
	return nil
}

				sws.apiDeclarationMap.Put(each.RootPath(), sws.composeDeclaration(each, each.RootPath()))
			}
		}
	}

	// if specified then call the PostBuilderHandler
	if config.PostBuildHandler != nil {
		config.PostBuildHandler(sws.apiDeclarationMap)
	}
	return sws
}

// LogInfo is the function that is called when this package needs to log. It defaults to log.Printf
var LogInfo = func(format string, v ...interface{}) {
	// use the restful package-wide logger
	log.Printf(format, v...)
}

// InstallSwaggerService add the WebService that provides the API documentation of all services
// conform the Swagger documentation specifcation. (https://github.com/wordnik/swagger-core/wiki).
func InstallSwaggerService(aSwaggerConfig Config) {
	RegisterSwaggerService(aSwaggerConfig, restful.DefaultContainer)
}

// RegisterSwaggerService add the WebService that provides the API documentation of all services
// conform the Swagger documentation specifcation. (https://github.com/wordnik/swagger-core/wiki).
func RegisterSwaggerService(config Config, wsContainer *restful.Container) {
	sws := newSwaggerService(config)
	ws := new(restful.WebService)
	ws.Path(config.ApiPath)
	ws.Produces(restful.MIME_JSON)