bal-jokes-api

An example Ballerina Swan Lake project that provides an unified API to call different humorous APIs to highlight some Ballerina features.

The humorous APIs are:

• https://api.chucknorris.io
• https://baconipsum.com/json-api/
• https://thesimpsonsquoteapi.glitch.me

Tentative TODO-list

Potential enhancements in no particular order:

• https://ballerina.io/learn/test-ballerina-code/
  • data providers
  • mock functions
• Ballerina error conversion to application specific JSON error structure
  • enable error chaining and listing multiple errors
• https://ballerina.io/learn/by-example/http-interceptors.html
• Concurrency
• https://ballerina.io/learn/cli-documentation/openapi/
• https://ballerina.io/learn/by-example/cache-basics.html
• https://ballerina.io/learn/generate-code-documentation/#write-ballerina-documentation

Ballerina commands

Modules have configration so all commands require:

export BAL_CONFIG_FILES='Config.toml:modules/chucknorris/Config.toml:modules/simpsons/Config.toml'

Run unit tests:

bal test --test-report --code-coverage

How to call the API

Using query parameters

Supported query parameters:

• Mandatory: family - valid values: chucknorris, ipsum, simpsons
• Optional: amount - integer greater than zero, defaults to 1.

Examples:

# get two simpsons jokes in json
curl -v 'http:/localhost:9090/jokes/v1/json?family=simpsons&amount=2'
# get two simpsons jokes in xml
curl -v 'http:/localhost:9090/jokes/v1/xml?family=simpsons&amount=2'

Using JSON payload

TODO

• amount is optional. Default value is 1.
• The same family can be listed any number of times and the total sum is calculated.

Example:

{
  "requests": [
    {
      "family": "chucknorris",
      "amount": 2
    },
    {
      "family": "simpsons"
    }
  ]
}

Using XML payload

TODO

Success responses

HTTP status code 200 Ok

{
  "jokes": [
    {
      "family": "simpsons",
      "text": "Shoplifting is a victimless crime, like punching someone in the dark."
    },
    {
      "family": "simpsons",
      "text": "Eat my shorts"
    }
  ]
}

<response>
  <jokes>
    <joke>
      <family>simpsons</family>
      <text>Shoplifting is a victimless crime, like punching someone in the dark.</text>
    </joke>
    <joke>
      <family>simpsons</family>
      <text>Eat my shorts</text>
    </joke>
  </jokes>
</response>

Error responses

This version returns only HTTP status codes:

• 400 Bad Request
• 500 Internal Server Error

Error payload examples:

{
    "code":"NOT_IMPLEMENTED", 
    "details":"Unfortunately the implementation is not yet available. Please call back later."
}

<response>
  <error>
    <code>NOT_IMPLEMENTED</code>
    <details>Unfortunately the implementation is not yet available. Please call back later.</details>
  </error>
</response>

Using Chuck Norris API

curl -v https://api.chucknorris.io/jokes/random

{"categories":[],"created_at":"2020-01-05 13:42:29.569033","icon_url":"https://assets.chucknorris.host/img/avatar/chuck-norris.png","id":"Ma0dcm41QLyJVOlz7f896w","updated_at":"2020-01-05 13:42:29.569033","url":"https://api.chucknorris.io/jokes/Ma0dcm41QLyJVOlz7f896w","value":"Miley Cyrus calls Chuck Norris daddy."}

Using Bacon Ipsum API

curl -v 'https://baconipsum.com/api/?type=meat-and-filler&sentences=1&start-with-lorem=1'

["Bacon ipsum dolor amet short ribs fatback cow proident, pork loin corned beef voluptate occaecat dolor tenderloin do nostrud sint biltong anim."]

Using Simpsons API

curl -v https://thesimpsonsquoteapi.glitch.me/quotes
curl -v https://thesimpsonsquoteapi.glitch.me/quotes?count=2

[{"quote":"Shoplifting is a victimless crime, like punching someone in the dark.","character":"Nelson Muntz","image":"https://cdn.glitch.com/3c3ffadc-3406-4440-bb95-d40ec8fcde72%2FNelsonMuntz.png?1497567511185","characterDirection":"Left"},{"quote":"Eat my shorts","character":"Bart Simpson","image":"https://cdn.glitch.com/3c3ffadc-3406-4440-bb95-d40ec8fcde72%2FBartSimpson.png?1497567511638","characterDirection":"Right"}]