@ -69,7 +69,6 @@ import (
// Paths that are handled by the React / Reach router that should all be served the main React app's index.html.
var reactRouterPaths = [ ] string {
"/" ,
"/alerts" ,
"/config" ,
"/flags" ,
@ -336,70 +335,85 @@ func New(logger log.Logger, o *Options) *Handler {
router . Get ( "/" , func ( w http . ResponseWriter , r * http . Request ) {
http . Redirect ( w , r , path . Join ( o . ExternalURL . Path , "/graph" ) , http . StatusFound )
} )
router . Get ( "/classic/" , func ( w http . ResponseWriter , r * http . Request ) {
http . Redirect ( w , r , path . Join ( o . ExternalURL . Path , "/classic/graph" ) , http . StatusFound )
} )
router . Get ( "/alerts" , readyf ( h . alerts ) )
router . Get ( "/graph" , readyf ( h . graph ) )
router . Get ( "/status" , readyf ( h . status ) )
router . Get ( "/flags" , readyf ( h . flags ) )
router . Get ( "/config" , readyf ( h . serveConfig ) )
router . Get ( "/rules" , readyf ( h . rules ) )
router . Get ( "/targets" , readyf ( h . targets ) )
router . Get ( "/version" , readyf ( h . version ) )
router . Get ( "/service-discovery" , readyf ( h . serviceDiscovery ) )
router . Get ( "/metrics" , promhttp . Handler ( ) . ServeHTTP )
router . Get ( "/federate" , readyf ( httputil . CompressionHandler {
Handler : http . HandlerFunc ( h . federation ) ,
} . ServeHTTP ) )
router . Get ( "/consoles/*filepath" , readyf ( h . consoles ) )
// Redirect the original React UI's path (under "/new") to its new path at the root.
router . Get ( "/new/*path" , func ( w http . ResponseWriter , r * http . Request ) {
p := route . Param ( r . Context ( ) , "path" )
http . Redirect ( w , r , path . Join ( o . ExternalURL . Path , strings . TrimPrefix ( p , "/new" ) ) + "?" + r . URL . RawQuery , http . StatusFound )
} )
router . Get ( "/static/*filepath" , func ( w http . ResponseWriter , r * http . Request ) {
router . Get ( "/classic/alerts" , readyf ( h . alerts ) )
router . Get ( "/classic/graph" , readyf ( h . graph ) )
router . Get ( "/classic/status" , readyf ( h . status ) )
router . Get ( "/classic/flags" , readyf ( h . flags ) )
router . Get ( "/classic/config" , readyf ( h . serveConfig ) )
router . Get ( "/classic/rules" , readyf ( h . rules ) )
router . Get ( "/classic/targets" , readyf ( h . targets ) )
router . Get ( "/classic/service-discovery" , readyf ( h . serviceDiscovery ) )
router . Get ( "/classic/static/*filepath" , func ( w http . ResponseWriter , r * http . Request ) {
r . URL . Path = path . Join ( "/static" , route . Param ( r . Context ( ) , "filepath" ) )
fs := server . StaticFileServer ( ui . Assets )
fs . ServeHTTP ( w , r )
} )
// Make sure that "<path-prefix>/new" is redirected to "<path-prefix>/new/" and
// not just the naked "/new/", which would be the default behavior of the router
// Make sure that "<path-prefix>/classic" is redirected to "<path-prefix>/classic/" and
// not just the naked "/classic/", which would be the default behavior of the router
// with the "RedirectTrailingSlash" option (https://godoc.org/github.com/julienschmidt/httprouter#Router.RedirectTrailingSlash),
// and which breaks users with a --web.route-prefix that deviates from the path derived
// from the external URL.
router . Get ( "/new" , func ( w http . ResponseWriter , r * http . Request ) {
http . Redirect ( w , r , path . Join ( o . ExternalURL . Path , "new" ) + "/" , http . StatusFound )
// See https://github.com/prometheus/prometheus/issues/6163#issuecomment-553855129.
router . Get ( "/classic" , func ( w http . ResponseWriter , r * http . Request ) {
http . Redirect ( w , r , path . Join ( o . ExternalURL . Path , "classic" ) + "/" , http . StatusFound )
} )
router . Get ( "/new/*filepath" , func ( w http . ResponseWriter , r * http . Request ) {
p := route . Param ( r . Context ( ) , "filepath" )
router . Get ( "/version" , h . version )
router . Get ( "/metrics" , promhttp . Handler ( ) . ServeHTTP )
// For paths that the React/Reach router handles, we want to serve the
// index.html, but with replaced path prefix placeholder.
for _ , rp := range reactRouterPaths {
if p != rp {
continue
}
router . Get ( "/federate" , readyf ( httputil . CompressionHandler {
Handler : http . HandlerFunc ( h . federation ) ,
} . ServeHTTP ) )
f , err := ui . Assets . Open ( "/static/react/index.html" )
if err != nil {
w . WriteHeader ( http . StatusInternalServerError )
fmt . Fprintf ( w , "Error opening React index.html: %v" , err )
return
}
idx , err := ioutil . ReadAll ( f )
if err != nil {
w . WriteHeader ( http . StatusInternalServerError )
fmt . Fprintf ( w , "Error reading React index.html: %v" , err )
return
}
replacedIdx := bytes . ReplaceAll ( idx , [ ] byte ( "CONSOLES_LINK_PLACEHOLDER" ) , [ ] byte ( h . consolesPath ( ) ) )
replacedIdx = bytes . ReplaceAll ( replacedIdx , [ ] byte ( "TITLE_PLACEHOLDER" ) , [ ] byte ( h . options . PageTitle ) )
w . Write ( replacedIdx )
router . Get ( "/consoles/*filepath" , readyf ( h . consoles ) )
serveReactApp := func ( w http . ResponseWriter , r * http . Request ) {
f , err := ui . Assets . Open ( "/static/react/index.html" )
if err != nil {
w . WriteHeader ( http . StatusInternalServerError )
fmt . Fprintf ( w , "Error opening React index.html: %v" , err )
return
}
idx , err := ioutil . ReadAll ( f )
if err != nil {
w . WriteHeader ( http . StatusInternalServerError )
fmt . Fprintf ( w , "Error reading React index.html: %v" , err )
return
}
replacedIdx := bytes . ReplaceAll ( idx , [ ] byte ( "CONSOLES_LINK_PLACEHOLDER" ) , [ ] byte ( h . consolesPath ( ) ) )
replacedIdx = bytes . ReplaceAll ( replacedIdx , [ ] byte ( "TITLE_PLACEHOLDER" ) , [ ] byte ( h . options . PageTitle ) )
w . Write ( replacedIdx )
}
// Serve the React app.
for _ , p := range reactRouterPaths {
router . Get ( p , serveReactApp )
}
// For all other paths, serve auxiliary assets.
r . URL . Path = path . Join ( "/static/react/" , p )
// The favicon and manifest are bundled as part of the React app, but we want to serve
// them on the root.
for _ , p := range [ ] string { "/favicon.ico" , "/manifest.json" } {
assetPath := "/static/react" + p
router . Get ( p , func ( w http . ResponseWriter , r * http . Request ) {
r . URL . Path = assetPath
fs := server . StaticFileServer ( ui . Assets )
fs . ServeHTTP ( w , r )
} )
}
// Static files required by the React app.
router . Get ( "/static/*filepath" , func ( w http . ResponseWriter , r * http . Request ) {
r . URL . Path = path . Join ( "/static/react/static" , route . Param ( r . Context ( ) , "filepath" ) )
fs := server . StaticFileServer ( ui . Assets )
fs . ServeHTTP ( w , r )
} )
Julius Volz
4 years ago
committed by