Hello World as a Service

Writing a service is the same as writing a command-line program in Golf. Both take the same input and produce the same output, so you can test with either one to begin with.

For that reason, create first article-hello-world as a command-line program.

The only thing to do afterwards is to start up Hello World as application server:
mgrg hello

Now there's a number of resident processes running, expecting clients requests. You can see those processes:
ps -ef|grep hello

The result:
bear       25772    2311  0 13:04 ?        00:00:00 mgrg hello
bear       25773   25772  0 13:04 ?        00:00:00 /var/lib/gg/bld/hello/hello.srvc
bear       25774   25772  0 13:04 ?        00:00:00 /var/lib/gg/bld/hello/hello.srvc
bear       25775   25772  0 13:04 ?        00:00:00 /var/lib/gg/bld/hello/hello.srvc
bear       25776   25772  0 13:04 ?        00:00:00 /var/lib/gg/bld/hello/hello.srvc
bear       25777   25772  0 13:04 ?        00:00:00 /var/lib/gg/bld/hello/hello.srvc

"mgrg hello" runs the Golf process manager for application "hello". A number of ".../hello.srvc" processes are server processes that will handle service request sent to application "hello".

Now, to test your service, you can send a request to the server from command line (by using "--service" option):
gg -r --req="/hello-world/name=Mike" --exec --silent-header --service

The above will make a request to one of the processes above, which will then reply:
This is Hello World from Mike


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