go - How to concatenate Service metadata for consul-template with commas -


does know how concatenate strings consul consul-template?

if have service 'foo' registered in consul

{   "node": "node1",   "address": "192.168.0.1",   "port": 3333 }, {   "node": "node2",   "address": "192.168.0.2",   "port": 4444 }

i consul-template generate following line:

servers=192.168.0.1:3333,192.168.0.2:4444/bogus

the following attempt not work since leaves trailing comma ,

servers={{range service "foo"}}{{.address}}{{.port}},{{end}}/bogus # renders servers=192.168.0.1:3333,192.168.0.2:4444,/bogus  # want servers=192.168.0.1:3333,192.168.0.2:4444/bogus

i know consul-template uses golang template syntax, cannot figure out syntax working. should use consul-template's join how pass both .address , .port join? trivial example, , i'm not using indexes intentionally since number of services more two. ideas?

this should work.

{{$foo_srv := service "foo"}} {{if $foo_srv}}   {{$last := len $foo_srv | subtract 1}} servers=   {{- range $i := loop $last}}     {{- index $foo_srv $i}}{{.address}}{{.port}},{{end}}   {{- end}}   {{- index $foo_srv last}}{{.address}}{{.port}}{{end}}/bogus {{end}}

i thinking if "join" can used.

note "{{-" means removing leading white spaces (such ' ', \t, \n).


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