Print HTTP routes on deploy

[itowlson]

Fixes #566.

@michelleN I'm afraid I can't yet test this because I can't get the Hippo-Nomad stuff working correctly yet. I will try to get that sorted in the morning. If you have time do feel free to give this a quick test - I think it is right but am not sure in exactly what form Hippo returns the channel domain, so that at least is quite likely to be wrong! Sorry!

[fibonacci1729]

Seems to work! Just verified against the local installer:

$ spin deploy
Successfully deployed application spin-hello-world version 1.0.0!
Application is running at spin-hello-world.spin-hello-world.local.fermyon.link
Available Routes:
  hello: http://spin-hello-world.spin-hello-world.local.fermyon.link/hello
    A simple component that returns hello.

$ curl -i http://spin-hello-world.spin-hello-world.local.fermyon.link/hello
HTTP/1.1 200 OK
Content-Length: 16
Date: Tue, 14 Jun 2022 13:35:11 GMT
Foo: bar
Content-Type: text/plain; charset=utf-8

Hello, Fermyon!

[michelleN]

I just tested and it works! I have a few minor comments. Thank you!

examples/http-rust [itowlson-deploy-print-routes] $ spin deploy
Successfully deployed application spin-hello-world version 1.0.0!
Application is running at spin-hello-world.spin-hello-world.local.fermyon.link
Available Routes:
  hello: http://spin-hello-world.spin-hello-world.local.fermyon.link/hello
    A simple component that returns hello.

[michelleN]

I think removing the description might make the output cleaner.

[itowlson]

I did this for consistency with the local printing of routes but can remove it if folks prefer!

[lann]

Yeah if we don't like the format it seems reasonable to change both (in a separate PR).

[michelleN]

sounds good

[lann]

Suggested change

	println!("Application is running at {}", channel.domain);
	print_available_routes(&channel.domain, &http_config.base, &cfg);
	}
	print_available_routes(&channel.domain, &http_config.base, &cfg);
	} else {
	println!("Application is running at {}", channel.domain);
	}