Consul template and services sort order

[Jeffrey Earl]

Hi, I'm using consul template to generate HAProxy mappings and see that the services call gives me my services in alphabetical order. I'm trying to reverse that order to guard against an edge case where services may start with the same string. For example, if I have services xyz and xyz123, my front end paths will generate in order:
xyz
xyz123

If I make a request for xyz123, HAProxy will match xyz first. This is because the way HAProxy uses essentially "starts with" to route the request based on the start of the service URI. I have not been able to figure out a way to change the order of the range using either standard golang template functionality or consul template functions. Am I missing something simple, or would this need to be something added to the functions that consul template add to the func map?

Cheers,
Jeff

[behnam saberi]

Hi Jeffrey

I have the same problem. Have you found the solution?

[John Eikenberry]

Hey Jeff, Behnam,

The only way to control sorting order in templates at this moment is to use maps. All maps are sorted by keys when iterated over, so if you can arrange your entries in a  scratch.MapSet with the keys set such that when sorted they'd order them the way you'd like... you can sort things that way.

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