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api-client-wrapper

Easy to use out of the box API wrapper tha uses axios at its core


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api-client-wrapper

===

An easy to use out of the box API wrapper that use axios in its core

This package was designed to wrap up the most common features of an api client implementation, in an effort to have a quick and stable tool for each project.

The present features in the package are:

  1. Homogeneous response: Each request is a promise that resolve with an homogeneous response object: {success:Boolean, attempts:int, data:Object, info:string, error:Error}. For more details refer to the Response Schema section on this readme.

  2. Concurrent requests: All the requests could be made simultaneously. By default the limit is configured to 5 concurrent requests, but it could be changed at api.simultaneousCalls

  3. Timeout and retry: In the case of a timeout response a request could be configured to try again with: api.maxAttemptsPerCall the default value is 1. Each attempt will be executed transparently and it will be just one response so the code for a request with a single attempt will be the same as for a request with multiple attempts.

  4. Masive requests: There is out of the box support for bulk calls that allows multiple requests in a single call. For more information refer to the How To use it section on this readme.

  5. Vuex integration: The package came with Vuex store integration for state monitoring (it will work with any Flux implementation but further testing is needed). The store instance should be provided using: api.setStore(store_instance) and this will result in the module APIwrapper being registered with the next properties:

    1. Working: Indicating that is at least one request executing store.state.APIwrapper.working
    2. Uploading: Indicating that is at least one request executing with a method different from GET store.state.APIwrapper.uploading
    3. Downloading: Indicating that is at least one request executing with a method equal to GET store.state.APIwrapper.downloading
    4. Request Count: Indicates the amount of requests being managed, executing requests + waiting for execution requests store.state.APIwrapper.request_count
    5. Execute Count: Indicates the amount of requests being executed in a concurrent manner store.state.APIwrapper.executing_count

Installing

npm install api-client-wrapper

How to use it

Performing a GET request

import api from 'api-client-wrapper'

let result = await api.get('path');
//or
api.get('path').then(result=>{});

Performing a POST request

import api from 'api-client-wrapper'

let result = await api.post('path', {data});
//or
api.post('path', {data}).then(result=>{});

The supported methods are:

get(path='', conf = {})
post(path='', data = {}, conf = {})
patch(path='', data = {}, conf = {})
put(path='', data = {}, conf = {})
delete(path='', conf = {})

//Or the global method that receive a request Configuration
call({request configuration})

Note that each method has a final argument that is a custom configuration for the request, this configuration takes precedence over the global configuration. For the supported properties please refer to the Request Configuration section.

Bulk calls

Each method has a bulk counterpart that allows for bulk calls

import api from 'api-client-wrapper'

let result = await api.bulkGet(['paths' or {configs}], continueWithFailure:Boolean, onProgress)
let result = await api.bulkPost(['paths' or {configs}], continueWithFailure:Boolean, onProgress)
let result = await api.bulkPatch(['paths' or {configs}], continueWithFailure:Boolean, onProgress)
let result = await api.bulkPut(['paths' or {configs}], continueWithFailure:Boolean, onProgress)
let result = await api.bulkDelete(['paths' or {configs}], continueWithFailure:Boolean, onProgress)

//or the global method that allows bulk calls with different methods
let result = await api.bulkCall([{configs}], continueWithFailure:Boolean, onProgress)
Params:
  • [paths or configs]:[]-> An array containing the paths for each request or an array of request configuration objects (described next).
  • continueWithFailure:Boolean-> Optional with the default to false. false The request will be considered failed when any of it subrequests fail and it will stop any further execution (there could be some sub-requests that never get executed if some other request failed before). true All the requests are executed, it doesn´t matter if some of them failed.
  • onProgress:Function(progress:Number)-> Is an optional callback that receives progress between [0-1], the progress is computed with the next formula: (request-completed / total-amount-of-request-in-the-bulkCall)

Request Configuration

A configuration object for each request (with precedence over any global configuration) with the next scheme:

{
// Relative or absolute path for the call. Always needed except for when a path was already passed as an argument
url:String,

// The HTTP verb to be used for the request
method:String,

// the URL parameters to be sent with the request
params:{},

// Data to be sent as the request body
data:{},

// An alias to be added to the response of this request for better indentification with bulk calls
alias:String,

// Number of attemps for the request in case of timeout failure
attempts:1,

// Number of milliseconds before the request times out.
timeout:10000

// Any other property supported by axios configuration
...
}

It is possible to add any property supported by axios (like headers or encoding).

Response Scheme

For any individual request the response schema is:

{
// Present only when an alias was passed in the config for the request
alias:String,

// true: when the status of the request is between [200-300) 
// flase: for any status not in the range of 200's
success:Boolean,

// Number of attemps made by this request before being considered completed
attempts:0,

// Any data returned in the response or an array of responses in the case of a bulk call
data:{}

// The error message present when an error is returned with the response
info:"",

// The error instance present in the response (if there is one)
error:null,

// All the other data present in the axios response
...
}

In the case of a bulk call the response data is an Array containing the response for each request (in the same order that the requests where passed)

let result = await anyBulkCall([{configs}]

//Result data will contain an array of responses
result.data.forEach(response=>{
   console.log (response)
})

// If an alias where provided for any request then that request could be accessed with that alias
let result = await anyBulkCall([{alias:'a',...},{alias:'b',...}]
console.log(result.data.a)
console.log(result.data.b)

Global Configuration

Configuration of the overall behaviour for the package

import api from 'api-client-wrapper'

// `baseURL` will be prepended to any path provided unless the provided path is absolute.
api.baseURL = '';

// The amount of attempts a request will make in the case of a timeout before failing completely
api.maxAttemptsPerCall = 1;

// The amount of concurrent requests that could be executed (when the requests number exceed this amount the requests are enqueue in a waiting mode)
api.simultaneousCalls = 5;

// Specifies the number of milliseconds before a request times out
api.timeout = 10000;

// Sets the default headers for 'Content-Type' for each request
api.setContentType(type = 'application/json')

// Sets the default authorization header: 'Authorization' for each request
api.setAuthorization(token, type = 'Bearer')

// Sets any default header that will be used on each request
api.setHeader(name: string, value:string)

// This will bring the module 'APIwrapper' available and the package will start updating its state
api.setStore(vuex_instance)

FAQs

Last updated on 03 May 2021

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