Simple helper for Golang web applications for automaticaly configuring Redis server clients by extracting connection string from environment parameters on Heroku hosting.
go get gopkg.in/vodolaz095/goherokuredis.v3
go get gopkg.in/vodolaz095/goherokuredis.v4
go get gopkg.in/vodolaz095/goherokuredis.v5
Version has one to one relation of versions of recommended redis client being used. https://github.com/go-redis/redis
So, for example, gopkg.in/vodolaz095/goherokuredis.v5 is linked to gopkg.in/redis.v5
Warning - v3 do not works on Go 1.4. Sorry.
This module inspects environment values for well known Redis-As-A-Service connection parameters being used at Heroku. Currently - these environment variables are supported (in this order):
- REDISTOGO_URL - see for details (https://devcenter.heroku.com/articles/redistogo#using-with-node-js)
- OPENREDIS_URL - see for details (https://devcenter.heroku.com/articles/openredis#using-redis-from-node-js)
- REDISCLOUD_URL - see for details (https://devcenter.heroku.com/articles/heroku-redis#connecting-in-node-js)
- REDISGREEN_URL - see for details (https://devcenter.heroku.com/articles/redisgreen#using-redis-with-node-js)
- REDIS_URL - see for details (https://devcenter.heroku.com/articles/heroku-redis#connecting-in-node-js)
if all of this environment values are empty, the default connection string is being used - redis://:@localhost:6379 - that is equal to
connecting to 6373 port of localhost without password - stack settings for running Redis server on localost
Also it is possible to override default setting by providing argument to Init() function.
package main
import (
"fmt"
"gopkg.in/vodolaz095/goherokuredis.v5"
)
func main() {
redisClient, err := goherokuredis.Init()
if err != nil {
panic(err)
}
err = redisClient.Ping().Err()
if err != nil {
panic(err)
}
fmt.Printf("Redis on %s is online!\n", redisClient.String())
}Let us assume your development PC use redis database at redis.local server
package main
import (
"fmt"
"gopkg.in/vodolaz095/goherokuredis.v5"
)
func main() {
redisClient, err := goherokuredis.Init("redis://usernameIgnored:authPassword@redis.local:6379/")
if err != nil {
panic(err)
}
err = redisClient.Ping().Err()
if err != nil {
panic(err)
}
fmt.Printf("Redis on %s is online!\n", redisClient.String())
} package main
import (
"fmt"
"net/http"
"os"
"github.com/vodolaz095/goherokuredis"
)
func main() {
port := os.Getenv("PORT")
if port == "" {
port = "3000"
}
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
defer func() {
err := recover()
if err != nil {
w.Header().Set("Content-Type", "text/plain")
w.WriteHeader(http.StatusServiceUnavailable)
fmt.Fprintf(w, "Redis on has this error: %s!", err)
}
}()
redisClient, err := goherokuredis.Init()
if err != nil {
panic(err)
}
defer func() {
redisClient.Close()
}()
err = redisClient.Ping().Err()
if err != nil {
panic(err)
}
w.Header().Set("Content-Type", "text/plain")
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, "Redis on %s is online!", redisClient.String())
})
err := http.ListenAndServe(fmt.Sprintf("0.0.0.0:%s", port), nil)
if err != nil {
panic(err)
}
}You can see example here https://goherokuredis.herokuapp.com/
The MIT License (MIT)
Copyright (c) 2015 Ostroumov Anatolij ostroumov095(at)gmail(dot)com et al.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.