Clojure coding exercise: parse, sort and display records.
Requires Clojure CLI tools (or, alternatively, Leiningen version 2.9.x).
To see CLI usage:
clojure -M:recordity -h
Output the pipe-delimited file of records (with pipe delimiter being the default, and default sorting)
clojure -M:recordity -f pipe-delimited.txt
Combine multiple files and delimiters, specify sorting
clojure -M:recordity -f pipe-delimited.txt -d pipe -f space-delimited.txt -d space -f comma-delimited.txt -d comma -s D
The three foo-delimited.txt files are included as sample resources in the test-data directory.
The CLI will search for each -f value first as a file with that name and path, then as a resource.
Implemented using Ring and
Compojure. State is held in rudimentary sessions using
Ring's session middleware and in-memory
session store, which is why a session identifier cookie is included in some of the sample curl
statements below.
Start up the API in a jetty server instance:
clojure -M:recordity-server
Here are some sample curl commands.
Get current (empty) results
curl -sS -X GET -i --header 'Accept: application/json' --header 'Content-Type: application/json' 'http://localhost:3000/records/birthdate'
POST some records (note the set-cookie in the first response, it is the session identifier, use it in subsequent requests)
curl -sS -X POST -i --header 'Content-Type: application/x-www-form-urlencoded' 'http://localhost:3000/records' -d 'record=Gartner%2CFarnsworth%2Cm%2Cblue%2C1962%2F11%2F22&delimiter=%2C'
curl -sS -X POST -i --header 'cookie: recordity=08130f6d-7b9c-4b0e-ad76-65eaf50314f6' --header 'Content-Type: application/x-www-form-urlencoded' 'http://localhost:3000/records' -d 'record=Smith%2CBubba%2Cm%2Cgreen%2C1965%2F1%2F12&delimiter=%2C'
Now see a non-empty response
curl -sS -X GET -i --header 'cookie: recordity=08130f6d-7b9c-4b0e-ad76-65eaf50314f6' --header 'Accept: application/json' --header 'Content-Type: application/json' 'http://localhost:3000/records/birthdate'
Run unit tests (uses Cognitect Labs test runner.)
clj -X:test
tail -f log/debug.log
Note: lein 2.9.x can be used to run any of the above commands, e.g.
lein run -- -f pipe-delimited.txt
or
lein run restful/-main
For development I used lein repl task with
cider-nrepl middleware, plus emacs with
cider.