calc

This program will give an API name /calc which will act both for GET (history) and POST request.

Usage

This project is generated with leiningen and to run it please use the below commands:

1. First, install the dependencies:

$ lein deps

2. Then run it with below command:

$ lein run -m calc.core

Example

POST request:

❯ http POST :3000/calc expression="1 * 2 * ( 3 + 4 * ( 5 - 7 ) ) * ( 4 - 9.3 )"
HTTP/1.1 200 OK
Content-Length: 28
Content-Type: application/json;charset=utf-8
Date: Mon, 13 Feb 2023 21:57:10 GMT
Server: Jetty(9.4.48.v20220622)

{
    "result": 53.00000000000001
}

❯ http POST :3000/calc expression="1 * 2 * ( 3.5 + 4 * ( 5 - 7 ) ) * ( 4 - 9.3 )"
HTTP/1.1 200 OK
Content-Length: 15
Content-Type: application/json;charset=utf-8
Date: Mon, 13 Feb 2023 21:57:22 GMT
Server: Jetty(9.4.48.v20220622)

{
    "result": 47.7
}

❯ http POST :3000/calc expression="1 * 2 * ( 3 + 4 * ( 5.07 - 7.98 ) ) * ( 4 - 9.99 )"
HTTP/1.1 200 OK
Content-Length: 29
Content-Type: application/json;charset=utf-8
Date: Mon, 13 Feb 2023 21:57:32 GMT
Server: Jetty(9.4.48.v20220622)

{
    "result": 103.50720000000001
}

GET request (history retrival):

❯ http GET :3000/calc
HTTP/1.1 200 OK
Content-Length: 585
Content-Type: application/json;charset=utf-8
Date: Mon, 13 Feb 2023 21:58:38 GMT
Server: Jetty(9.4.48.v20220622)

{
    "66338f8dc1f912089e07102ef29eb66e": {
        "expression": "1 * 2 * ( 3 + 4 * ( 5 - 7 ) ) * ( 4.79 - 9.3 )",
        "result": 45.10000000000001,
        "timestamp": 1676325346
    },
    "8cc933f70523a394368c614007533b7d": {
        "expression": "1 * 2 * ( 3.5 + 4 * ( 5 - 7 ) ) * ( 4 - 9.3 )",
        "result": 47.7,
        "timestamp": 1676325442
    },
    "b23b249379469fc4b4663626d19a8f2e": {
        "expression": "1 * 2 * ( 3 + 4 * ( 5 - 7 ) ) * ( 4 - 9.3 )",
        "result": 53.00000000000001,
        "timestamp": 1676325430
    },
    "f23421f5437563aede616be08de76dd5": {
        "expression": "1 * 2 * ( 3 + 4 * ( 5.07 - 7.98 ) ) * ( 4 - 9.99 )",
        "result": 103.50720000000001,
        "timestamp": 1676325452
    }
}

License

Copyright © 2023 Khan Mohammad R.

This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0 which is available at http://www.eclipse.org/legal/epl-2.0.

This Source Code may also be made available under the following Secondary Licenses when the conditions for such availability set forth in the Eclipse Public License, v. 2.0 are satisfied: GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version, with the GNU Classpath Exception which is available at https://www.gnu.org/software/classpath/license.html.