fibonacci

Fibonacci counter REST service, implemented in golang

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Usage

Installation and start

$> go install
$> fibonacci

The service by default starts on port '8080'.

Calls

The service right now has two endpoints:

The get the typical 'Hello world' response call '/':

$> curl localhost:8080/
   Welcome to fib service, call /fibonacci/:n

To get the first 'n' values of the fibonacci sequence call '/fibonacci/:n':

$> curl localhost:8080/fibonacci/10
   {"n":10,"elems":"1, 1, 2, 3, 5, 8, 13, 21, 34, 55"}

If the passed parameters are wrong, or something unexpected happened during sequence calculation, a custom error will be returned:

$> curl localhost:8080/fibonacci/a
   {"errorCode":1000,"message":"Received inputParameter is not a correct limit value","inputParameters":"a"}

Testing

To execute all tests, run:

$> go test ./...

To execute benchmarks as well, run:

$> go test -check.b -check.v ./...

Technology

The service is written in golang, with gin serving as the web framework and go-check in tests.

The fibservice.go is the place where go counting takes place. The calculations occur in a seperate go routine. Calculation is done with the help of a channel from which the consecutive values are read.