commit 0a5ed0f50bb56cb32f60d29d0d1622f1c8ecb7a5
Author: Wim <wim@42.be>
Date: Sun Oct 30 22:32:29 2016 +0000
Override config from environment. See #50
Expects uppercase environment variables of MATTERBRIDGE_PROTOCOL_ACCOUNT_KEY="value"
e.g. you can override this config
[mattermost]
[mattermost.work]
Team="yourteam"
Login="yourlogin"
Password="yourpass"
by using
MATTERBRIDGE_MATTERMOST_WORK_TEAM="newteam"
MATTERBRIDGE_MATTERMOST_WORK_LOGIN="newlogin"
MATTERBRIDGE_MATTERMOST_WORK_PASSWORD="newpassword"
diff --git a/bridge/bridge.go b/bridge/bridge.go
index 7f08c60..3d53224 100644
--- a/bridge/bridge.go
+++ b/bridge/bridge.go
@@ -256 +258 @@ func New(cfg *config.Config, bridge *config.Bridge, c chan config.Message) Bridg
accInfo := strings.Split(bridge.Account, ".")
protocol := accInfo[0]
name := accInfo[1]
+ // override config from environment
+ config.OverrideCfgFromEnv(cfg, protocol, name)
switch protocol {
case "mattermost":
return bmattermost.New(cfg.Mattermost[name], name, c)
diff --git a/bridge/config/config.go b/bridge/config/config.go
index 3972e84..aa881a7 100644
--- a/bridge/config/config.go
+++ b/bridge/config/config.go
@@ -36 +39 @@ package config
import (
"github.com/BurntSushi/toml"
"log"
+ "os"
+ "reflect"
+ "strings"
)
type Message struct {
@@ -803 +8340 @@ func NewConfig(cfgfile string) *Config {
}
return &cfg
}
+
+func OverrideCfgFromEnv(cfg *Config, protocol string, account string) {
+ var protoCfg Protocol
+ val := reflect.ValueOf(cfg).Elem()
+ // loop over the Config struct
+ for i := 0; i < val.NumField(); i++ {
+ typeField := val.Type().Field(i)
+ // look for the protocol map (both lowercase)
+ if strings.ToLower(typeField.Name) == protocol {
+ // get the Protocol struct from the map
+ data := val.Field(i).MapIndex(reflect.ValueOf(account))
+ protoCfg = data.Interface().(Protocol)
+ protoStruct := reflect.ValueOf(&protoCfg).Elem()
+ // loop over the found protocol struct
+ for i := 0; i < protoStruct.NumField(); i++ {
+ typeField := protoStruct.Type().Field(i)
+ // build our environment key (eg MATTERBRIDGE_MATTERMOST_WORK_LOGIN)
+ key := "matterbridge_" + protocol + "_" + account + "_" + typeField.Name
+ key = strings.ToUpper(key)
+ // search the environment
+ res := os.Getenv(key)
+ // if it exists and the current field is a string
+ // then update the current field
+ if res != "" {
+ fieldVal := protoStruct.Field(i)
+ if fieldVal.Kind() == reflect.String {
+ log.Printf("config: overriding %s from env with %s\n", key, res)
+ fieldVal.Set(reflect.ValueOf(res))
+ }
+ }
+ }
+ // update the map with the modified Protocol (cfg.Protocol[account] = Protocol)
+ val.Field(i).SetMapIndex(reflect.ValueOf(account), reflect.ValueOf(protoCfg))
+ break
+ }
+ }
+}
