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// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package nosql
import (
"net/url"
"strconv"
"strings"
)
// The file contains common redis connection functions
// ToRedisURI converts old style connections to a RedisURI
//
// A RedisURI matches the pattern:
//
// redis://[username:password@]host[:port][/database][?[option=value]*]
// rediss://[username:password@]host[:port][/database][?[option=value]*]
// redis+socket://[username:password@]path[/database][?[option=value]*]
// redis+sentinel://[password@]host1 [: port1][, host2 [:port2]][, hostN [:portN]][/ database][?[option=value]*]
// redis+cluster://[password@]host1 [: port1][, host2 [:port2]][, hostN [:portN]][/ database][?[option=value]*]
//
// We have previously used a URI like:
// addrs=127.0.0.1:6379 db=0
// network=tcp,addr=127.0.0.1:6379,password=macaron,db=0,pool_size=100,idle_timeout=180
//
// We need to convert this old style to the new style
func ToRedisURI(connection string) *url.URL {
uri, err := url.Parse(connection)
if err == nil && strings.HasPrefix(uri.Scheme, "redis") {
// OK we're going to assume that this is a reasonable redis URI
return uri
}
// Let's set a nice default
uri, _ = url.Parse("redis://127.0.0.1:6379/0")
network := "tcp"
query := uri.Query()
// OK so there are two types: Space delimited and Comma delimited
// Let's assume that we have a space delimited string - as this is the most common
fields := strings.Fields(connection)
if len(fields) == 1 {
// It's a comma delimited string, then...
fields = strings.Split(connection, ",")
}
for _, f := range fields {
items := strings.SplitN(f, "=", 2)
if len(items) < 2 {
continue
}
switch strings.ToLower(items[0]) {
case "network":
if items[1] == "unix" {
uri.Scheme = "redis+socket"
}
network = items[1]
case "addrs":
uri.Host = items[1]
// now we need to handle the clustering
if strings.Contains(items[1], ",") && network == "tcp" {
uri.Scheme = "redis+cluster"
}
case "addr":
uri.Host = items[1]
case "password":
uri.User = url.UserPassword(uri.User.Username(), items[1])
case "username":
password, set := uri.User.Password()
if !set {
uri.User = url.User(items[1])
} else {
uri.User = url.UserPassword(items[1], password)
}
case "db":
uri.Path = "/" + items[1]
case "idle_timeout":
_, err := strconv.Atoi(items[1])
if err == nil {
query.Add("idle_timeout", items[1]+"s")
} else {
query.Add("idle_timeout", items[1])
}
default:
// Other options become query params
query.Add(items[0], items[1])
}
}
// Finally we need to fix up the Host if we have a unix port
if uri.Scheme == "redis+socket" {
query.Set("db", uri.Path)
uri.Path = uri.Host
uri.Host = ""
}
uri.RawQuery = query.Encode()
return uri
}
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