cealloga

0.3.0 • Public • Published

cealloga

Build Status Coverage Status npm version Documentation Vulnerabilities

Ceallóga are simple ES6 arrow functions. Validate, test, and publish them as web service endpoints, and do it all via an easy-to-use rest API.

Requirements

Install

npm install -g cealloga

Run

cealloga

Getting started

In this tutorial, we'll create a microservice that:

  • takes information from a raw data source called colours
  • sums the colours up and returns them as an object called chartData (something you might later consume in an UI component such as a bar chart, for example.)

Before we begin, let's dissect the uncompressed source code we want to host as a web service.

(ceallog) => {
    let colours = ceallog.vars.colours, // A list of colours, POSTed by the user in the request body.
        coloursMap = {}, // A map of colours, where key will be colour name ('yellow') and value a total (`2`).
        chartData = {labels: [], series: []} // Chart data to build from incoming colours
    
    if (colours) { // Sum the colours...
        colours.forEach(c => coloursMap[c.name] = coloursMap[c.name] + 1 || 1);
    }
    
    for (var name in coloursMap) { // Push the `name` into labels and `total` into series in the same order.
        let total = coloursMap[name];
        
        chartData.labels.push(name);
        chartData.series.push(total);
    }
    
    return chartData;
}

Validate

We create our code by first posting it to the /code/validate service. When we do this, the request is validated, the code is compiled, it's added to the database and cached on the server, and finally we receive a response with some information about it.

  1. Save the following file as barchart.json.
{
   "name":"barchart",
   "label":"Colour Total Bar Chart",
   "body":"(ceallog)=>{let colours=ceallog.vars.colours,coloursMap={},chartData={labels:[],series:[]};if(colours){colours.forEach(c=>coloursMap[c.name]=coloursMap[c.name]+1||1)}for(var name in coloursMap){let total=coloursMap[name];chartData.labels.push(name);chartData.series.push(total)}return chartData;}"
}
  1. In a terminal, run this curl command from the same directory as barchart.json:
curl -H "Content-Type: application/json" -X POST -d @barchart.json http://localhost:3000/code/validate

You should now have a response like the following. Copy the "service" value; you'll need it in the next example!

{
   "compiled":true,
   "id":"5a610660158ffae3135b7c7e",
   "created_date":"2018-01-18T20:41:04.849Z",
   "label":"Colour Total Bar Chart",
   "message":"Resource retrieved successfully.",
   "name":"barchart",
   "published":false,
   "service":"/cealloga/_test/5a610660158ffae3135b7c7e"
}

Test

Now that the code has been validated and created, let's send it some colour data and test the results.

  1. Save the following file as colours.json.
{"colours": [{"name": "blue"}, {"name": "yellow"}, {"name": "red"}, {"name": "yellow"}]}
  1. In a terminal, run this curl command from the same directory as colours.json:
curl -H "Content-Type: application/json" -X POST -d @colours.json http://localhost:3000/cealloga/_test/5a610660158ffae3135b7c7e # <- replace with your _test endpoint from the validate example 

If you're seeing the following, it worked!

{
   "labels":[
      "blue",
      "yellow",
      "red"
   ],
   "series":[
      1,
      2,
      1
   ]
}

Publish

Once we're happy with the test results, we can publish the function by name as /cealloga/barchart.

Run the following curl command.

curl http://localhost:3000/code/publish/5a610660158ffae3135b7c7e # <- replace with the id from the validate example  

You should get a response like the following:

{
   "body":"(ceallog)=>{let colours=ceallog.vars.colours,coloursMap={},chartData={labels:[],series:[]};if(colours){colours.forEach(c=>coloursMap[c.name]=coloursMap[c.name]+1||1)}for(var name in coloursMap){let total=coloursMap[name];chartData.labels.push(name);chartData.series.push(total)}return chartData;}",
   "compiled":true,
   "created_date":"2018-01-18T20:41:04.849Z",
   "id":"5a610660158ffae3135b7c7e",
   "label":"Colour Total Bar Chart",
   "name":"barchart",
   "published":true,
   "service":"/cealloga/barchart"
}

Making a request to the published endpoint

The only thing left to day at this point is to check that /cealloga/barchart is up and running.

In a terminal, run this curl command from the same directory as colours.json:

curl -H "Content-Type: application/json" -X POST -d @colours.json http://localhost:3000/cealloga/barchart

As in the test example above, if you're seeing the following, it worked again!

{
   "labels":[
      "blue",
      "yellow",
      "red"
   ],
   "series":[
      1,
      2,
      1
   ]
}

Versions

Current Tags

  • Version
    Downloads (Last 7 Days)
    • Tag
  • 0.3.0
    1
    • latest

Version History

  • Version
    Downloads (Last 7 Days)
    • Published
  • 0.3.0
    1
  • 0.2.0
    15
  • 0.1.0
    0

Package Sidebar

Install

npm i cealloga

Weekly Downloads

16

Version

0.3.0

License

GPL-3.0

Unpacked Size

9.33 MB

Total Files

152

Last publish

Collaborators

  • ancamcheachta