Go Static Redirerctor

Send redirect (301 or 302) HTTP response fast, flexible and (optional) log visits to ClickHouse

Features

• Response very fast
• Log every visit to Yandex ClickHouse
• Configurable by environment variables
• Shows buffer size on /load

Configuration

Environment variables:

• PORT - HTTP listen port (8080 by default)
• REDIRECTS - list of redirects (see section "REDIRECTS")
• PERMANENTLY - set true to response 301 Moved Permanently instead of 302 Found (false=302 Found by default)
• BUFFER - buffer size (in requests) between HTTP server and DB writer (100,000 by default)
• DISABLE_CH - set true to disable writing to ClickHouse
• ClickHouse connection
  • CH_HOST - host (127.0.0.1 by default)
  • CH_PORT - port (9000 by default)
  • CH_DEBUG - debug enabled true/false (false by default)
  • CH_USER - user (empty=default by default)
  • CH_PASSWORD - password (nothing by default)
  • CH_DB - database (empty=default by default)

REDIRECTS

Syntax:

<uri1> <redirect1>[|<uri2> <redirect2>[|...]]]

uri_ may contains:

• /*<word> - at the end with any word (actually ignored), with fits /, /any, /any/ /any/thing etc.

redirect_ may contains:

• {URI} - replases with uri from request
• {HOST} - replases with host from request

Example: / https://{HOST}/y|/photos https://jsonplaceholder.typicode.com{URI}|/photos/*a https://jsonplaceholder.typicode.com{URI}|/y http://yandex.ru

should be in one line, strongly like in syntax

• / https://{HOST}/y
  • curl -i http://127.0.0.1:8080 -> https://127.0.0.1:8080/y
• /photos https://jsonplaceholder.typicode.com{URI}
  • curl -i http://127.0.0.1:8080/photos -> https://jsonplaceholder.typicode.com/photos
  • curl -i http://127.0.0.1:8080/photos?id=101 -> https://jsonplaceholder.typicode.com/photos?id=101
• photos/*a https://jsonplaceholder.typicode.com{URI}
  • curl -i http://127.0.0.1:8080/photos/101 -> https://jsonplaceholder.typicode.com/photos/101
• /y http://yandex.ru
  • curl -i http://127.0.0.1:8080/y -> http://yandex.ru

Attention!

Do not make redirect loops. Folks haven't like this ;)

Usage

docker run -d --restart always \
    -e CH_HOST=10.0.0.1 \
    -e CH_PASSWORD="password" \
    -e REDIRECTS="/ http://google.com|/y http://yandex.ru" \
    -p 8080:8080 delfer/go-static-redirector

Open http://10.0.0.1/ in you browser or by curl to make new visit,
open http://10.0.0.1/load to get current buffer usage

License

MIT