Support specifying an alternative gravatar-compatible address

[nogweii]

• What Grafana version are you using? 4.6.2
• What OS are you running grafana on? Ubuntu 16.04

I like avatars to help personalize the user experience, but I don't want to use Gravatar's service to query them for the internal grafana dashboard at my company. I don't expect Grafana to implement a whole pluggable API just for avatars, just that it'd be nice to be able to override the srcCfg variable with something from the configuration file.

grafana/pkg/api/avatar/avatar.go

Lines 34 to 44 in a4972f4

	func UpdateGravatarSource() {
	srcCfg := "//secure.gravatar.com/avatar/"
	gravatarSource = srcCfg
	if strings.HasPrefix(gravatarSource, "//") {
	gravatarSource = "http:" + gravatarSource
	} else if !strings.HasPrefix(gravatarSource, "http://") &&
	!strings.HasPrefix(gravatarSource, "https://") {
	gravatarSource = "http://" + gravatarSource
	}
	}

In the mean time, I think I could configure nginx to intercept /avatar/MD5 and send it off somewhere else:

grafana/pkg/api/dtos/models.go

Lines 52 to 60 in af34f99

	func GetGravatarUrl(text string) string {
	if text == "" {
	return ""
	}
	hasher := md5.New()
	hasher.Write([]byte(strings.ToLower(text)))
	return fmt.Sprintf(setting.AppSubUrl+"/avatar/%x", hasher.Sum(nil))
	}

[Luckyvb]

for nginx all ok:

    location /avatar/ {
        root /var/www/html;
        try_files $uri.png $uri.png @backend;
        sendfile  on;
    }
   location @backend {
       proxy_pass http://localhost:3000; #as sample
       ...
   }

if no nginx, need changes, like you wrote

[gelicia]

Hello, as you may have heard, we are transitioning away from using discussions to discuss feature requests. We are migrating this discussion to an issue and closing the discussion. The issue is #83005. Feel free to continue the discussion around this there. Thank you!