ad-promise
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This is a fork of the gheeres node-activedirectory. It fixes some issues with timeouts with very large AD-Groups as well as returning also promises so you won't have to use callbacks
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<span class="cline-any cline-no"> </span></td><td class="text"><pre class="prettyprint lang-js">// this module will give you the possibility to make add alot of promises, but it will make sure, that only a fixed number is open.
// It was initially created to limit the number of promises making a tcp request (as windows only allows 5000 at once by default)
// If you provide a key you can make sure that you limit all the operations of a similar type. For example name your Type 'TCP' and all the functons
// calling with that key will use the same launch array. So if F1 calls it with 5000 Promises and F2 calls it with 5000 Promises the total limit will
// still be intact and not doubled
let currentPromiseArrays = <span class="cstat-no" title="statement not covered" >{};</span>
let currentPromiseMaxNumbers = <span class="cstat-no" title="statement not covered" >{};</span>
/**
* Returns an Array of Objects that are used in the PromisesWithMaxAtOnce Function.
*
* @public
* @param {Function} PromiseFunc Function that returns a Promise with one InputParameter that is used
* @param {Array} InputValues Array with the Inputvalues. One promise for each entry is created
* @param {Number} StartingIndex Every entry will have an index to later determin which promise of the array was resolved
*/
const getLaunchArray = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >(P</span>romiseFunc, InputValues, StartingIndex) => {</span>
// This function will return a launch Array. It takes a function that returns a promise and it's input Values as an array
// The output is an array with each entry having 3 elements
// resolveLaunchPromise is the function that resolves tha launchPromise with the same index
// launchPromise triggers the execution of promisewithTcpRequest
// promiseFunc The Input Promise with the correlating Inputvalue
let startingIndex = <span class="cstat-no" title="statement not covered" >StartingIndex ? StartingIndex : 0;</span>
let launchArray = <span class="cstat-no" title="statement not covered" >InputValues.map(<span class="fstat-no" title="function not covered" >fu</span>nction(InputValue, Index) {</span>
let obj = <span class="cstat-no" title="statement not covered" >{};</span>
let resLPromise;
// Expose the resolve of the promise, so it can be called from outsite
<span class="cstat-no" title="statement not covered" > obj.launchPromise = new Promise(<span class="fstat-no" title="function not covered" >(r</span>esolve, reject) => {</span>
<span class="cstat-no" title="statement not covered" > resLPromise = resolve;</span>
});
// Add some logic to the resolvePromise
<span class="cstat-no" title="statement not covered" > obj.resolveLaunchPromise = <span class="fstat-no" title="function not covered" >()</span> => {</span>
<span class="cstat-no" title="statement not covered" > obj.isRunning = true;</span>
<span class="cstat-no" title="statement not covered" > resLPromise(); </span>
}
<span class="cstat-no" title="statement not covered" > obj.isRunning = false;</span>
<span class="cstat-no" title="statement not covered" > obj.isRejected = false;</span>
<span class="cstat-no" title="statement not covered" > obj.isResolved = false;</span>
<span class="cstat-no" title="statement not covered" > obj.index = startingIndex + Index;</span>
<span class="cstat-no" title="statement not covered" > obj.promiseFunc = new Promise(<span class="fstat-no" title="function not covered" >(r</span>esolve, reject) => {</span>
<span class="cstat-no" title="statement not covered" > obj.launchPromise.then(<span class="fstat-no" title="function not covered" >()</span> => {</span>
<span class="cstat-no" title="statement not covered" > PromiseFunc(InputValue).then(<span class="fstat-no" title="function not covered" >(d</span>ata) =>{</span>
<span class="cstat-no" title="statement not covered" > obj.isRunning = false;</span>
<span class="cstat-no" title="statement not covered" > obj.isResolved = true;</span>
<span class="cstat-no" title="statement not covered" > resolve(data);</span>
}, <span class="fstat-no" title="function not covered" >(e</span>rr) => {
<span class="cstat-no" title="statement not covered" > obj.isRunning = false;</span>
<span class="cstat-no" title="statement not covered" > obj.isRejected = true;</span>
<span class="cstat-no" title="statement not covered" > reject(err)</span>
});
});
});
<span class="cstat-no" title="statement not covered" > return obj;</span>
});
<span class="cstat-no" title="statement not covered" > return launchArray; </span>
}
/**
* For the specified group, retrieve all of the users that belong to the group.
*
* @public
* @param {Function} PromiseFunc Function that returns a Promise with one InputParameter that is used
* @param {Array} InputValues Array with the Inputvalues. One promise for each entry is created
* @param {Number} MaxAtOnce Number of Promises that can run at the same time
* @param {String} TypeKey A Key that is set to group promises together. So e.g. you set the key to TCP no matter which function calls with that Key it wont exceed the maxAtOnce Promises
*/
const PromisesWithMaxAtOnce = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >(P</span>romiseFunc, InputValues, MaxAtOnce, TypeKey) => {</span>
// You can input any promise that should be limited by open at the same time
// PromiseFunc is a function that returns a promise and takes in an input value
// InputValue is an Array of those InputValues
// MaxAtOnce is the number of Promises maximum pending at the same time
<span class="cstat-no" title="statement not covered" > if(TypeKey){</span>
<span class="cstat-no" title="statement not covered" > currentPromiseArrays[TypeKey] = currentPromiseArrays[TypeKey] || [];</span>
<span class="cstat-no" title="statement not covered" > MaxAtOnce = currentPromiseMaxNumbers[TypeKey] ? currentPromiseMaxNumbers[TypeKey] : MaxAtOnce;</span>
<span class="cstat-no" title="statement not covered" > if(!currentPromiseMaxNumbers[TypeKey]) <span class="cstat-no" title="statement not covered" >currentPromiseMaxNumbers[TypeKey] = MaxAtOnce;</span></span>
}
let alreadyRunning = <span class="cstat-no" title="statement not covered" >TypeKey ? (currentPromiseArrays[TypeKey] ): [];</span>
let runningPromises = <span class="cstat-no" title="statement not covered" >getCountRunningPromises(alreadyRunning); </span>
let launchArray = <span class="cstat-no" title="statement not covered" >getLaunchArray(PromiseFunc, InputValues, alreadyRunning.length); </span>
<span class="cstat-no" title="statement not covered" > alreadyRunning = alreadyRunning.concat(launchArray);</span>
// Launch idex is the current index of the promise in the array that is beeing started;
let launchIndex = <span class="cstat-no" title="statement not covered" >getCountFinishedOrRunningPromises(alreadyRunning);</span>
// First start as much promises as are allowed at once (if there are less in the array than max allowed, start all of them)
<span class="cstat-no" title="statement not covered" > for(let i=launchIndex; runningPromises < MaxAtOnce && i < alreadyRunning.length; i++){</span>
<span class="cstat-no" title="statement not covered" > alreadyRunning[i].resolveLaunchPromise();</span>
<span class="cstat-no" title="statement not covered" > runningPromises = getCountRunningPromises(alreadyRunning);</span>
<span class="cstat-no" title="statement not covered" > launchIndex = getCountFinishedOrRunningPromises(alreadyRunning);</span>
}
// For each Promise that finishes start a new one until all are launched
<span class="cstat-no" title="statement not covered" > alreadyRunning.map(<span class="fstat-no" title="function not covered" >(V</span>alue, Index) => {</span>
// Only map for indices bigger than the current launch index as everything smaller has already been launched;
<span class="cstat-no" title="statement not covered" > if(Index >= launchIndex -1 && launchIndex < alreadyRunning.length){</span>
<span class="cstat-no" title="statement not covered" > Value.promiseFunc.then(<span class="fstat-no" title="function not covered" >()</span> => {</span>
<span class="cstat-no" title="statement not covered" > if(launchIndex < alreadyRunning.length){</span>
<span class="cstat-no" title="statement not covered" > alreadyRunning[launchIndex].resolveLaunchPromise();</span>
}
<span class="cstat-no" title="statement not covered" > runningPromises = getCountRunningPromises(alreadyRunning);</span>
<span class="cstat-no" title="statement not covered" > launchIndex = getCountFinishedOrRunningPromises(alreadyRunning);</span>
}, <span class="fstat-no" title="function not covered" >er</span>r => {
<span class="cstat-no" title="statement not covered" > console.log("ERROR IN SERVICE.MAXPROMISESATONCE");</span>
<span class="cstat-no" title="statement not covered" > console.log(err);</span>
<span class="cstat-no" title="statement not covered" > if(launchIndex<alreadyRunning.length){</span>
<span class="cstat-no" title="statement not covered" > alreadyRunning[runningPromises].resolveLaunchPromise();</span>
}
<span class="cstat-no" title="statement not covered" > runningPromises = getCountRunningPromises(alreadyRunning);</span>
<span class="cstat-no" title="statement not covered" > launchIndex = getCountFinishedOrRunningPromises(alreadyRunning);</span>
});
}
});
<span class="cstat-no" title="statement not covered" > if(TypeKey){</span>
<span class="cstat-no" title="statement not covered" > currentPromiseArrays[TypeKey] = alreadyRunning;</span>
}
<span class="cstat-no" title="statement not covered" > return launchArray;</span>
}
function <span class="fstat-no" title="function not covered" >getCountRunningPromises(</span>PromiseArray){
//
<span class="cstat-no" title="statement not covered" > return PromiseArray.filter(<span class="fstat-no" title="function not covered" >En</span>try => {<span class="cstat-no" title="statement not covered" >return Entry.isRunning === true}</span>).length;</span>
}
function <span class="fstat-no" title="function not covered" >getCountFinishedOrRunningPromises(</span>PromiseArray){
<span class="cstat-no" title="statement not covered" > return PromiseArray.filter(<span class="fstat-no" title="function not covered" >En</span>try => {<span class="cstat-no" title="statement not covered" >return Entry.isRunning || Entry.isResolved || Entry.isRejected}</span>).length;</span>
}
<span class="cstat-no" title="statement not covered" >module.exports = PromisesWithMaxAtOnce;</span></pre></td></tr>
</table></pre>
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