README
¶
web.go
web.go is the simplest way to write web applications in the Go programming language. It's ideal for writing simple, performant backend web services.
Overview
web.go should be familiar to people who've developed websites with higher-level web frameworks like sinatra or web.py. It is designed to be a lightweight web framework that doesn't impose any scaffolding on the user. Some features include:
- Routing to url handlers based on regular expressions
- Secure cookies
- Support for fastcgi and scgi
- Web applications are compiled to native code. This means very fast execution and page render speed
- Efficiently serving static files
Installation
Make sure you have the a working Go environment. See the install instructions. web.go targets the Go release branch.
To install web.go, simply run:
go get github.com/hoisie/web
To compile it from source:
git clone git://github.com/hoisie/web.git
cd web && go build
Example
package main
import (
"github.com/hoisie/web"
)
func hello(val string) string { return "hello " + val }
func main() {
web.Get("/(.*)", hello)
web.Run("0.0.0.0:9999")
}
To run the application, put the code in a file called hello.go and run:
go run hello.go
You can point your browser to http://localhost:9999/world .
Getting parameters
Route handlers may contain a pointer to web.Context as their first parameter. This variable serves many purposes -- it contains information about the request, and it provides methods to control the http connection. For instance, to iterate over the web parameters, either from the URL of a GET request, or the form data of a POST request, you can access ctx.Params, which is a map[string]string:
package main
import (
"github.com/hoisie/web"
)
func hello(ctx *web.Context, val string) {
for k,v := range ctx.Params {
println(k, v)
}
}
func main() {
web.Get("/(.*)", hello)
web.Run("0.0.0.0:9999")
}
In this example, if you visit http://localhost:9999/?a=1&b=2, you'll see the following printed out in the terminal:
a 1
b 2
Documentation
API docs are hosted at https://hoisie.github.io/web/
If you use web.go, I'd greatly appreciate a quick message about what you're building with it. This will help me get a sense of usage patterns, and helps me focus development efforts on features that people will actually use.
About
web.go was written by Michael Hoisie
Documentation
¶
Overview ¶
Package web is a lightweight web framework for Go. It's ideal for writing simple, performant backend web services.
Index ¶
- Variables
- func Close()
- func Delete(route string, handler interface{})
- func Get(route string, handler interface{})
- func Handle(route string, method string, httpHandler http.Handler)
- func Match(method string, route string, handler interface{})
- func NewCookie(name string, value string, age int64) *http.Cookie
- func Post(route string, handler interface{})
- func Process(c http.ResponseWriter, req *http.Request)
- func Put(route string, handler interface{})
- func Run(addr string)
- func RunFcgi(addr string)
- func RunScgi(addr string)
- func RunTLS(addr string, config *tls.Config)
- func SetLogger(logger *log.Logger)
- func Slug(s string, sep string) string
- func Urlencode(data map[string]string) string
- func Websocket(route string, httpHandler websocket.Handler)
- type Context
- func (ctx *Context) Abort(status int, body string)
- func (ctx *Context) BadRequest()
- func (ctx *Context) ContentType(val string) string
- func (ctx *Context) Forbidden()
- func (ctx *Context) GetBasicAuth() (string, string, error)
- func (ctx *Context) GetSecureCookie(name string) (string, bool)
- func (ctx *Context) NotFound(message string)
- func (ctx *Context) NotModified()
- func (ctx *Context) Redirect(status int, url_ string)
- func (ctx *Context) SetCookie(cookie *http.Cookie)
- func (ctx *Context) SetHeader(hdr string, val string, unique bool)
- func (ctx *Context) SetSecureCookie(name string, val string, age int64) error
- func (ctx *Context) Unauthorized()
- func (ctx *Context) WriteString(content string)
- type Server
- func (s *Server) Close()
- func (s *Server) Delete(route string, handler interface{})
- func (s *Server) Get(route string, handler interface{})
- func (s *Server) Handle(route string, method string, httpHandler http.Handler)
- func (s *Server) Match(method string, route string, handler interface{})
- func (s *Server) Post(route string, handler interface{})
- func (s *Server) Process(c http.ResponseWriter, req *http.Request)
- func (s *Server) Put(route string, handler interface{})
- func (s *Server) Run(addr string)
- func (s *Server) RunFcgi(addr string)
- func (s *Server) RunScgi(addr string)
- func (s *Server) RunTLS(addr string, config *tls.Config) error
- func (s *Server) ServeHTTP(c http.ResponseWriter, req *http.Request)
- func (s *Server) SetLogger(logger *log.Logger)
- func (s *Server) Websocket(route string, httpHandler websocket.Handler)
- type ServerConfig
Constants ¶
This section is empty.
Variables ¶
var ( ErrMissingCookieSecret = errors.New("Secret Key for secure cookies has not been set. Assign one to web.Config.CookieSecret.") ErrInvalidKey = errors.New("The keys for secure cookies have not been initialized. Ensure that a Run* method is being called") )
var Config = &ServerConfig{ RecoverPanic: true, ColorOutput: true, }
Config is the configuration of the main server.
Functions ¶
func Delete ¶
func Delete(route string, handler interface{})
Delete adds a handler for the 'DELETE' http method in the main server.
func Get ¶
func Get(route string, handler interface{})
Get adds a handler for the 'GET' http method in the main server.
func NewCookie ¶
NewCookie is a helper method that returns a new http.Cookie object. Duration is specified in seconds. If the duration is zero, the cookie is permanent. This can be used in conjunction with ctx.SetCookie.
func Post ¶
func Post(route string, handler interface{})
Post adds a handler for the 'POST' http method in the main server.
func Process ¶
func Process(c http.ResponseWriter, req *http.Request)
Process invokes the main server's routing system.
func Put ¶
func Put(route string, handler interface{})
Put adds a handler for the 'PUT' http method in the main server.
func Run ¶
func Run(addr string)
Run starts the web application and serves HTTP requests for the main server.
func RunFcgi ¶
func RunFcgi(addr string)
RunFcgi starts the web application and serves FastCGI requests for the main server.
func RunScgi ¶
func RunScgi(addr string)
RunScgi starts the web application and serves SCGI requests for the main server.
func Slug ¶
Slug is a helper function that returns the URL slug for string s. It's used to return clean, URL-friendly strings that can be used in routing.
Types ¶
type Context ¶
type Context struct {
Request *http.Request
Params map[string]string
Server *Server
http.ResponseWriter
}
A Context object is created for every incoming HTTP request, and is passed to handlers as an optional first argument. It provides information about the request, including the http.Request object, the GET and POST params, and acts as a Writer for the response.
func (*Context) Abort ¶
Abort is a helper method that sends an HTTP header and an optional body. It is useful for returning 4xx or 5xx errors. Once it has been called, any return value from the handler will not be written to the response.
func (*Context) ContentType ¶
ContentType sets the Content-Type header for an HTTP response. For example, ctx.ContentType("json") sets the content-type to "application/json" If the supplied value contains a slash (/) it is set as the Content-Type verbatim. The return value is the content type as it was set, or an empty string if none was found.
func (*Context) GetBasicAuth ¶
GetBasicAuth returns the decoded user and password from the context's 'Authorization' header.
func (*Context) NotModified ¶
func (ctx *Context) NotModified()
Notmodified writes a 304 HTTP response
func (*Context) SetHeader ¶
SetHeader sets a response header. If `unique` is true, the current value of that header will be overwritten . If false, it will be appended.
func (*Context) SetSecureCookie ¶
func (*Context) Unauthorized ¶
func (ctx *Context) Unauthorized()
Unauthorized writes a 401 HTTP response
func (*Context) WriteString ¶
WriteString writes string data into the response object.
type Server ¶
type Server struct {
Config *ServerConfig
Logger *log.Logger
Env map[string]interface{}
// contains filtered or unexported fields
}
Server represents a web.go server.
func (*Server) Handle ¶
Add a custom http.Handler. Will have no effect when running as FCGI or SCGI.
func (*Server) Process ¶
func (s *Server) Process(c http.ResponseWriter, req *http.Request)
Process invokes the routing system for server s
func (*Server) ServeHTTP ¶
func (s *Server) ServeHTTP(c http.ResponseWriter, req *http.Request)
ServeHTTP is the interface method for Go's http server package
Source Files