http

package
v1.8.4 Latest Latest
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Published: Apr 17, 2018 License: GPL-3.0 Imports: 21 Imported by: 0

Documentation

Overview

Show nicely (but simple) formatted HTML error pages (or respond with JSON if the appropriate `Accept` header is set)) for the http package.

We use html templates to handle simple but as informative as possible error pages.

To eliminate circular dependency in case of an error, we don't store error pages on swarm. We can't save the error pages as html files on disk, or when deploying compiled binaries they won't be found.

For this reason we resort to save the HTML error pages as strings, which then can be parsed by Go's html/template package

A simple http server interface to Swarm

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func GetGenericErrorPage added in v1.7.0

func GetGenericErrorPage() string

This returns the HTML for generic errors

func GetMultipleChoicesErrorPage added in v1.7.2

func GetMultipleChoicesErrorPage() string

This returns the HTML for a page listing disambiguation options i.e. if user requested bzz:/<hash>/read and the manifest contains "readme.md" and "readinglist.txt", this page is returned with a clickable list the existing disambiguation links in the manifest

func GetNotFoundErrorPage added in v1.7.0

func GetNotFoundErrorPage() string

This returns the HTML for a 404 Not Found error

func ShowError added in v1.7.0

func ShowError(w http.ResponseWriter, r *Request, msg string, code int)

ShowError is used to show an HTML error page to a client. If there is an `Accept` header of `application/json`, JSON will be returned instead The function just takes a string message which will be displayed in the error page. The code is used to evaluate which template will be displayed (and return the correct HTTP status code)

func ShowMultipleChoices added in v1.7.2

func ShowMultipleChoices(w http.ResponseWriter, r *Request, list api.ManifestList)

ShowMultipeChoices is used when a user requests a resource in a manifest which results in ambiguous results. It returns a HTML page with clickable links of each of the entry in the manifest which fits the request URI ambiguity. For example, if the user requests bzz:/<hash>/read and that manifest contains entries "readme.md" and "readinglist.txt", a HTML page is returned with this two links. This only applies if the manifest has no default entry

func StartHttpServer

func StartHttpServer(api *api.Api, config *ServerConfig)

starts up http server

func ValidateCaseErrors added in v1.8.2

func ValidateCaseErrors(r *Request) string

ValidateCaseErrors is a method that process the request object through certain validators that assert if certain conditions are met for further information to log as an error

Types

type CaseError added in v1.8.2

type CaseError struct {
	Validator func(*Request) bool
	Msg       func(*Request) string
}

a custom error case struct that would be used to store validators and additional error info to display with client responses.

type ErrorParams added in v1.7.0

type ErrorParams struct {
	Msg       string
	Code      int
	Timestamp string

	Details template.HTML
	// contains filtered or unexported fields
}

parameters needed for formatting the correct HTML page

type Request added in v1.6.0

type Request struct {
	http.Request
	// contains filtered or unexported fields
}

Request wraps http.Request and also includes the parsed bzz URI

type RoundTripper

type RoundTripper struct {
	Host string
	Port string
}

func (*RoundTripper) RoundTrip

func (self *RoundTripper) RoundTrip(req *http.Request) (resp *http.Response, err error)

type Server added in v1.5.6

type Server struct {
	// contains filtered or unexported fields
}

func NewServer added in v1.6.0

func NewServer(api *api.Api) *Server

func (*Server) BadRequest added in v1.6.0

func (s *Server) BadRequest(w http.ResponseWriter, r *Request, reason string)

func (*Server) Error added in v1.6.0

func (s *Server) Error(w http.ResponseWriter, r *Request, err error)

func (*Server) HandleDelete added in v1.6.0

func (s *Server) HandleDelete(w http.ResponseWriter, r *Request)

HandleDelete handles a DELETE request to bzz:/<manifest>/<path>, removes <path> from <manifest> and returns the resulting manifest hash as a text/plain response

func (*Server) HandleGet added in v1.8.0

func (s *Server) HandleGet(w http.ResponseWriter, r *Request)

HandleGet handles a GET request to

  • bzz-raw://<key> and responds with the raw content stored at the given storage key
  • bzz-hash://<key> and responds with the hash of the content stored at the given storage key as a text/plain response

func (*Server) HandleGetFile added in v1.6.0

func (s *Server) HandleGetFile(w http.ResponseWriter, r *Request)

HandleGetFile handles a GET request to bzz://<manifest>/<path> and responds with the content of the file at <path> from the given <manifest>

func (*Server) HandleGetFiles added in v1.6.0

func (s *Server) HandleGetFiles(w http.ResponseWriter, r *Request)

HandleGetFiles handles a GET request to bzz:/<manifest> with an Accept header of "application/x-tar" and returns a tar stream of all files contained in the manifest

func (*Server) HandleGetList added in v1.6.0

func (s *Server) HandleGetList(w http.ResponseWriter, r *Request)

HandleGetList handles a GET request to bzz-list:/<manifest>/<path> and returns a list of all files contained in <manifest> under <path> grouped into common prefixes using "/" as a delimiter

func (*Server) HandlePostFiles added in v1.6.0

func (s *Server) HandlePostFiles(w http.ResponseWriter, r *Request)

HandlePostFiles handles a POST request (or deprecated PUT request) to bzz:/<hash>/<path> which contains either a single file or multiple files (either a tar archive or multipart form), adds those files either to an existing manifest or to a new manifest under <path> and returns the resulting manifest hash as a text/plain response

func (*Server) HandlePostRaw added in v1.6.0

func (s *Server) HandlePostRaw(w http.ResponseWriter, r *Request)

HandlePostRaw handles a POST request to a raw bzz-raw:/ URI, stores the request body in swarm and returns the resulting storage key as a text/plain response

func (*Server) NotFound added in v1.7.0

func (s *Server) NotFound(w http.ResponseWriter, r *Request, err error)

func (*Server) ServeHTTP added in v1.6.0

func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request)

type ServerConfig added in v1.6.0

type ServerConfig struct {
	Addr       string
	CorsString string
}

ServerConfig is the basic configuration needed for the HTTP server and also includes CORS settings.

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