slavery-js/dist/utils/Pool.cjs.map

A simple clustering app that allows you to scale an application on multiple thread, containers or machines

{"version":3,"sources":["../../src/utils/Pool.ts"],"sourcesContent":["import Queue from './Queue.js'\n\nclass Pool<T> {\n    /* *\n     * this class handle the socket connectd\n     * queue of sockets and manages connection with the workers\n     * */\n\n    private enabled: Queue<string>;\n    private disabled: string[];\n    private items: { [key: string]: T };\n\n    constructor() {\n        this.enabled = new Queue();\n        this.disabled = [];\n        this.items = {}\n    }\n\n    has( id: string ): boolean {\n        return this.items[id] ? true : false;\n    }\n\n    add( id: string, item: T ): boolean {\n        // if the item is already in the pool\n        if (this.has(id)) this.remove(id);\n        // add to the queue\n        this.enabled.enqueue(id);\n        // add the item to the pool\n        this.items[id] = item;\n        // return true\n        return false;\n    }\n\n    disable(id: string): boolean {\n        if( !this.has(id) ) return false;\n        // if it is in the disable list, job done\n        if( this.disabled.indexOf(id) !== -1 ) return true;\n        // if it is in the enabled list, remove it\n        if( this.enabled.indexOf(id) !== -1 ){\n            this.enabled.remove(id);\n            // add the slave to the disable list\n            this.disabled.push(id);\n            return true;\n        }\n        return false;\n    }\n\n    disableUntil(id: string, timeOrCondition: number | Function): undefined {\n        // if it is not in the pool, return false\n        if( !this.has(id) ) return;\n        // check if timeOrCondition is a number or a function\n        let time = null;\n        let condition : any = null;\n        if(typeof timeOrCondition === 'number')\n            time = timeOrCondition;\n        else if(typeof timeOrCondition === 'function')\n            condition = timeOrCondition;\n        else throw new Error('timeOrCondition must be a number or a function');\n        // if it is already disabled, we want to keep it disabled until the timeOrCondition is met\n        // if it is in the enabled list, disable it\n        if( this.enabled.indexOf(id) !== -1 ) this.disable(id);\n        // check that the id is in the disabled list\n        if( this.disabled.indexOf(id) === -1 ) throw new Error('id is not in the disabled list');\n        // if time is defined, set a timeout\n        if(time) setTimeout(() => this.enable(id), time);\n        // if condition is defined, set a interval\n        if(condition){\n            let interval = setInterval(() => {\n                if(condition()){\n                    clearInterval(interval);\n                    this.enable(id);\n                }\n            }, 100);\n        }\n    }\n\n\n    enable(id: string) : boolean {\n        // if it is not in the pool, return false\n        if( !this.has(id) ) return false;\n        // if it is already enabled, job done\n        if( this.enabled.indexOf(id) !== -1 ) return true;\n        // if it is in the disabled list, remove it\n        if( this.disabled.indexOf(id) !== -1 ){\n            // remove the slave from the disable list\n            this.disabled = this.disabled.filter( e => e !== id );\n            // add the slave to the queue\n            this.enabled.enqueue(id);\n            return true\n        }\n        return false;\n    }\n\n    nextAndEnable() : string | boolean {\n        // if the diabled list is empty, return false\n        if( this.disabled.length === 0 ) return false;\n        // get the first element of the disabled list\n        let id = this.disabled[0];\n        // and enable it\n        this.enable(id);\n        // return the id\n        return id;\n    }\n\n    rotate() : T | null { \n        // dequeue and enqueue\n        if(this.size() === 0) return null\n        const id = this.enabled.dequeue()\n        if(!id) return null\n        this.enabled.enqueue(id)\n        return this.items[id]\n    }\n\n    hasEnabled() : boolean {\n        return this.enabled.size() > 0;\n    }\n\n\n    nextAndDisable() : T | null { // dequeue and disable\n        if(this.size() === 0) return null\n        const id = this.enabled.dequeue();\n        if(!id) return null;\n        this.disabled.push(id);\n        return this.items[id];\n    }\n\n    // remove value while maintaining order\n    remove( id: string ) : T | null {\n        // look in the queue for the id\n        let result = this._lookUp(id);\n        if(result){\n            let index = result.index;\n            let list = result.list;\n            // remove the lists\n            if(list === 'enabled')\n                this.enabled.removeAt(index);\n            else\n                this.disabled.splice(index, 1);\n            // remove the items\n            let item = this.items[id];\n            delete this.items[id];\n            // return true\n            return item;\n        }\n        return null;\n    }\n\n    removeOne() : T | null {\n        // get the first element of the enabled list\n        if(this.enabled.size() > 0){\n            let id = this.enabled.dequeue();\n            if(id === undefined || id === false) return null;\n            // remove the item from the pool\n            let item = this.items[id];\n            delete this.items[id];\n            return item;\n        }\n        return null;\n    }\n\n    get( id: string ) : T | null {\n        /* get the item from the pool */\n        if(!this.has(id)) return null;\n        return this.items[id];\n    }\n\n    // get the size of the pool\n    size() : number {\n        return Object.keys(this.items).length;\n    }\n\n    // lenght of the pool\n    length() : number {\n        return this.size();\n    }\n\n    // count the enabled elements\n    getEnabledCount() : number {\n        return this.enabled.size();\n    }\n\n    // count the disabled elements\n    getDisabledCount() : number {\n        return this.disabled.length;\n    }\n\n    // check if queue is empty\n    isEmpty() : boolean {\n        return this.size() === 0;\n    }\n\n    _lookUp( id : string ) : { index: number, list: string } | false {\n        // look in the queue for the id\n        let index = this.enabled.indexOf(id);\n        if(!(index === -1))\n            return { index, list: 'enabled' };\n        // look in the disable list for the id\n        index = this.disabled.indexOf(id);\n        if(!(index === -1))\n            return { index, list: 'disabled' };\n        return false;\n    }\n\n    toArray() : T[] {\n        return Object.values(this.items);\n    }\n\n    print() : void {\n        console.log(this.toArray());\n    }\n\n    getEnabled() : string[] {\n        return this.enabled.toArray();\n    }\n\n    getEnabledObjects() : T[] {\n        return this.enabled.toArray().map( id => this.items[id] );\n    }\n\n    getDisabled() : string[] {\n        return this.disabled;\n    }\n\n    getDisabledObjects() : T[] {\n        return this.disabled.map( id => this.items[id] );\n    }\n\n    getConnections() : string[] {\n        return Object.keys(this.items);\n    }\n\n    healthCheck() : boolean {\n        let total = this.size();\n        let enabled = this.getEnabled().length;\n        let disabled = this.getDisabled().length;\n        if(total === (enabled + disabled))\n            return true;\n        else return false;\n    }\n\n    // synonims\n    next = this.rotate\n    pop = this.nextAndDisable;\n    shift = this.nextAndEnable;\n    unshift = this.add;\n    push = this.add;\n    count = this.size;\n    removeAt = this.remove;\n    removeItem = this.remove;\n\n\n}\n\nexport default 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