@a-2-c-2-anpm/amet-rerum-voluptatibus

Simpler Http/s than build in node

Install

npm install @a-2-c-2-anpm/amet-rerum-voluptatibus --save

Usage ( showing defaults, minus baseUrl )

const HyperRequest = require('@a-2-c-2-anpm/amet-rerum-voluptatibus')

let SimpleRestClient = new HyperRequest({
    baseUrl : 'http://api.fixer.io/latest',
    customLogger : function(){},
    rawResponseCaller : function(a, b){

    },
    failWhenBadCode : true,//fails when >= a 400 code
    retryOnFailure:{
        fail : function(){},
        min : 300.
        max : 600,
        retries : 5,
        backOff : 10 //ms
    },
    gzip : true,
    respondWithObject : true, //returns headers and request as well
    respondWithProperty : 'data', //returns response property as top level, if set to false it returns full body
    parserFunction : function(data){ return JSON.parse(data) } // optional ( defaults to JSON.parse
    timeout : 4000,
    maxCacheKeys : 10,
    cacheTtl : 500,
    enablePipe : false,
    highWaterMark : 16000//set the high water mark on the transform stream
    cacheByReference : false // if true cache returns back the object returned in itself, does not return a copy, thus is mutable
    authorization : ''//raw authorization header if applicable
    cacheIgnoreFields : ['headers.request_id']
});

SimpleRestClient.get('/endpoint', {
    headers : {},
    body : {}
});

Dont be intimidated you may only need baseUrl if you just want a json client

 const SimpleRestClient = new HyperRequest({
      baseUrl : 'http://api.fixer.io/latest',
 });

 SimpleRestClient.get('/endpoint', {
      headers : {},
      body : {}
 });

For In depth usage, I recommend looking at unit tests and the actual code (its not that scary), feel free to contribute!

#Methods - all http methods support a url and options object (url, { body : {}, headers : {}, etc... }) so you can include body/headers/etc ####Http Methods get post delete put patch

Util Methods

clearCache()
makeRequest(verb, endpoint, opts)
getCookiesFromHeader(headersObj)
getCacheElement(key)
addCacheElement(key, value)
clone(data) - deep clone (json.parse(json.stringify(data))
deepRead(obj, accessorString)

Callbacks

    SimpleRestClient.get('?symbols=USD,GBP', {}, succesCallbacks, failCallback);

Promises

    SimpleRestClient.get('?symbols=USD,GBP', {}).then(function(){
        
    },
    function(){
    
    });
    
    

Bulk

    SimpleRestClient.get(['?symbols=USD,GBP', '?symbols=GBP,USD'], {}).then(function(array){
        
    });
    

Batch

    SimpleRestClient.post([{},{},{},{},{}], { batch : true, batchSize : 2 }).then(function(array){
        
    });

Streams

    SimpleRestClient.get('?symbols=USD,GBP', {}).pipe(process.stdout;
    
    

Retry with Back Off

    let client = HyperRequest({
        baseUrl : 'http://api.fixer.io/thisdoesnotexist',
        customLogger : function(verb, endpoint, time){},
        rawResponseCaller : function(a, b){},
        debug : true,
        timeout : 4000,
        respondWithProperty : 'rates',
        retryOnFailure : {
            fail : (info) => {// a 'global' callback when a failure occurs (good for logging or retry failures)
                console.log('error ' , info);
            },
            min :  400, //min http response code
            max :  600, //max http response code
            retries   :  2, //number of retries
            backOff :  100//backoff in ms * by retry count
        }
    });
    

SubClient

let child = client.child({ url = '', headers = {}, audit}) 

child.get('/thing')

where audit is called on all requests and feeds back rawResponse
    

This will retry 1 time beyond the initial try with a 100 ms backoff, on any errors between (inclusive) of 400 and 600 http response codes because this endpoint is a 404 it will retry twice, and fail hitting both the failure callback/reject/emit error, and will hit the global fail callback

Retry With Digest(extension)

In this example we have a client which re-auths with its IAM system if it gets a 401-403 error

    var dataSystem = new Request({
        baseUrl : 'http://currency.svc.mylab.local',
        respondWithProperty : 'data',
        retryOnFailure : {
            min :  401,      //min http response code
            max :  403,      //max http response code
            retries   :  5,  //number of retries
            backOff :  100,  //backoff in ms * by retry count
            retryExtension : (failedResponse) => {
                return iamSystem.post('sessions/login', { body : { username : 'user', password :'pass' } }).then((resp) => {
                    return {
                        persist : true,
                        extensions : [
                            {
                                accessor :'headers.Authentication',
                                value : resp.session
                            }
                        ]
                    };
                });
            }
        }
    });

When a retry happens the retryExtension function is called first any 'extension' object it returns gets executed on the request options before the next request is executed, if persist is true, it persists on later calls