proxy.go
	/* Copyright © 2019, 2020, 2021, 2022 Red Hat, Inc. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package server
Documentation in literate-programming-style is available at: https://redhatinsights.github.io/insights-operator-ldapauth/packages/server/proxy.html	`import ( "io" "log" "net/http" "net/url" "strings" )`
HandleHTTP handle all routes, used for proxying them to controller	func ( s * Server ) HandleHTTP ( w http . ResponseWriter , req * http . Request ) { log . Println ( "Proxying to" , s . Proxy ) tempURL , _ := url . Parse ( s . Proxy ) req . URL . Host = tempURL . Host req . URL . Scheme = tempURL . Scheme req . URL . Path = strings . Replace ( req . URL . Path , APIPrefix , s . ProxyPrefix , 1 ) req . Host = tempURL . Host resp , err := s . Transport . RoundTrip ( req ) if err != nil { http . Error ( w , err . Error ( ) , http . StatusServiceUnavailable ) return } defer func ( ) { err := resp . Body . Close ( ) if err != nil { log . Println ( "Unable to close response body" ) } } ( ) copyHeader ( w . Header ( ) , resp . Header ) w . WriteHeader ( resp . StatusCode ) _ , err = io . Copy ( w , resp . Body ) if err != nil { log . Println ( "Error copying response body" ) } } func copyHeader ( dst , src http . Header ) { for k , vv := range src { for _ , v := range vv { dst . Add ( k , v ) } } }

proxy.go

/*
Copyright © 2019, 2020, 2021, 2022 Red Hat, Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package
 server

Documentation in literate-programming-style is available at: https://redhatinsights.github.io/insights-operator-ldapauth/packages/server/proxy.html


import
 (
	"io"

	"log"

	"net/http"

	"net/url"

	"strings"

)

HandleHTTP handle all routes, used for proxying them to controller

func
 (
s
 *
Server
)
 HandleHTTP
(
w
 http
.
ResponseWriter
,
 req
 *
http
.
Request
)
 {
	log
.
Println
(
"Proxying to"
,
 s
.
Proxy
)

	tempURL
,
 _
 :=
 url
.
Parse
(
s
.
Proxy
)

	req
.
URL
.
Host
 =
 tempURL
.
Host

	req
.
URL
.
Scheme
 =
 tempURL
.
Scheme

	req
.
URL
.
Path
 =
 strings
.
Replace
(
req
.
URL
.
Path
,
 APIPrefix
,
 s
.
ProxyPrefix
,
 1
)

	req
.
Host
 =
 tempURL
.
Host

	resp
,
 err
 :=
 s
.
Transport
.
RoundTrip
(
req
)

	if
 err
 !=
 nil
 {
		http
.
Error
(
w
,
 err
.
Error
(
)
,
 http
.
StatusServiceUnavailable
)

		return

	}

	defer
 func
(
)
 {
		err
 :=
 resp
.
Body
.
Close
(
)

		if
 err
 !=
 nil
 {
			log
.
Println
(
"Unable to close response body"
)

		}

	}
(
)

	copyHeader
(
w
.
Header
(
)
,
 resp
.
Header
)

	w
.
WriteHeader
(
resp
.
StatusCode
)

	_
,
 err
 =
 io
.
Copy
(
w
,
 resp
.
Body
)

	if
 err
 !=
 nil
 {
		log
.
Println
(
"Error copying response body"
)

	}

}


func
 copyHeader
(
dst
,
 src
 http
.
Header
)
 {
	for
 k
,
 vv
 :=
 range
 src
 {
		for
 _
,
 v
 :=
 range
 vv
 {
			dst
.
Add
(
k
,
 v
)

		}

	}

}