how do I get with confd the key string value generate with etcd - service-discovery

Question

I am using confd and etcd. I am following the confd example for nginx. I put these keys in my etcd service:
curl http://127.0.0.1:4001/v2/keys/myapp/upstream -XPUT -d dir=true
curl http://127.0.0.1:4001/v2/keys/myapp/subdomain -XPUT -d value="myapp"
curl http://127.0.0.1:4001/v2/keys/myapp/upstream/app2 -XPUT -d value="10.0.1.101:80"
curl http://127.0.0.1:4001/v2/keys/myapp/upstream/app1 -XPUT -d value="10.0.1.100:80"
It is my toml configuration:
[template]
prefix = "myapp"
keys = [
"subdomain",
"upstream",
]
owner = "nginx"
mode = "0644"
src = "nginx.tmpl"
dest = "/tmp/myapp.conf"
check_cmd = "/usr/sbin/nginx -t -c {{ .src }}"
reload_cmd = "/usr/sbin/service nginx reload"
And it is my tmpl configuration.
upstream {{.subdomain}} {
{{range $server := .upstream}}
#I want to get the key string value
server {{$sever.key}} {{$server.Value}};
{{end}}
}
server {
server_name {{.subdomain}}.example.com;
location / {
proxy_pass http://{{.subdomain}};
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
Here I want to catch the key string value like app2 or app1. I am only know how to get its values. I want to do something like this {{$sever.key}} but it doesn't work. The configuration above {{$sever.key}} is wrong but I did it to show what do I want.
Is this idea possible?
Is there any reserverd word for that or syntax?

Answer 1

I had the same problem. For me this code worked (adopted to your config):
{{range gets "/myapp/upstream/*"}}
server {{base .Key}} {{.Value}}
{{end}}
For me the main problem was the gets function. All examples I found on the net used getvs, which only provides the values. The base functions, just removes the first parts of the path of your key.
For further information, take a look at these confd docs.