| 1 | 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* as redis from 'redis';\nimport { EventEmitter } from 'events';\nimport * as BBPromise from 'bluebird';\nimport Transaction from './transaction';\nimport Batch from './batch';\nimport { IRedisKeyOptions } from './types/redis';\n\nBBPromise.promisifyAll(redis.RedisClient.prototype);\nBBPromise.promisifyAll(redis.Multi.prototype);\n\nexport interface IRedisOptions {\n\thost: string;\n\tport: number;\n\tprefix?: string;\n}\n\nconst SCAN_LIMIT = 1000;\n\nclass Redis extends EventEmitter {\n\n\tprivate _client: any;\n\n\tprivate _prefix: string;\n\n\t/**\n\t * Constructor\n\t */\n\tconstructor (options: IRedisOptions) {\n\n\t\tsuper();\n\n\t\tthis._prefix = options.prefix || '';\n\t\tthis._client = redis.createClient(options);\n\n\t}\n\n\t/**\n\t * Get the underlying redis client\n\t */\n\tget client (): any {\n\n\t\treturn this._client;\n\n\t}\n\n\t/**\n\t * Close the client\n\t */\n\tpublic async dispose (): Promise<void> {\n\n\t\tawait this._client.quitAsync();\n\n\t\tthis._client = null;\n\n\t}\n\n\t/**\n\t * Return the transaction prototype\n\t */\n\tstatic get Transaction (): typeof Transaction {\n\n\t\treturn Transaction;\n\n\t}\n\n\t/**\n\t * Get a transaction\n\t */\n\tpublic transaction (): Transaction {\n\n\t\tthis._checkDisposed();\n\n\t\treturn new Transaction(this);\n\n\t}\n\n\t/**\n\t * Watch a key\n\t */\n\tpublic async watch (key: string): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\treturn this._client.watchAsync(key);\n\n\t}\n\n\t/**\n\t * Begin a batch of commands\n\t */\n\tpublic batch (): Batch {\n\n\t\tthis._checkDisposed();\n\n\t\treturn new Batch(this);\n\n\t}\n\n\t/**\n\t * Key exists\n\t */\n\tpublic async exists (key: string): Promise<boolean> {\n\n\t\tthis._checkDisposed();\n\n\t\treturn this._client.existsAsync(key);\n\n\t}\n\n\t/**\n\t * Get a key value\n\t */\n\tpublic async get (key: string): Promise<string> {\n\n\t\tthis._checkDisposed();\n\n\t\treturn this._client.getAsync(key);\n\n\t}\n\n\t/**\n\t * Set a key value\n\t */\n\tpublic async set (key: string, value: string | number, options?: IRedisKeyOptions): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\tawait this._client.setAsync(key, value);\n\n\t\treturn this._checkExpiry(key, options);\n\n\t}\n\n\t/**\n\t * Increment an integer value\n\t */\n\tpublic async incrby (key: string, value: number, options?: IRedisKeyOptions): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\tawait this._client.incrbyAsync(key, value);\n\n\t\treturn this._checkExpiry(key, options);\n\n\t}\n\n\t/**\n\t * Increment a float value\n\t */\n\tpublic async incrbyfloat (key: string, value: number, options?: IRedisKeyOptions): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\tawait this._client.incrbyfloatAsync(key, value);\n\n\t\treturn this._checkExpiry(key, options);\n\n\t}\n\n\t/**\n\t * Increment an integer value in a hash set\n\t */\n\tpublic async hincrby (key: string, hashKey: string, value: number, options?: IRedisKeyOptions): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\tawait this._client.hincrbyAsync(key, hashKey, value);\n\n\t\treturn this._checkExpiry(key, options);\n\n\t}\n\n\t/**\n\t * Increment a float value in a hash set\n\t */\n\tpublic async hincrbyfloat (key: string, hashKey: string, value: number, options?: IRedisKeyOptions): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\tawait this._client.hincrbyfloatAsync(key, hashKey, value);\n\n\t\treturn this._checkExpiry(key, options);\n\n\t}\n\n\t/**\n\t * Hash map set\n\t */\n\tpublic async hmset (key: string, hash: object, options?: IRedisKeyOptions): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\tawait this._client.hmsetAsync(key, hash);\n\n\t\treturn this._checkExpiry(key, options);\n\n\t}\n\n\t/**\n\t * Get a hash set\n\t */\n\tpublic async hgetall (key: string): Promise<any> {\n\n\t\tthis._checkDisposed();\n\n\t\treturn this._client.hgetallAsync(key);\n\n\t}\n\n\t/**\n\t * Delete a key\n\t */\n\tpublic async del (key: string): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\treturn this._client.delAsync(key);\n\n\t}\n\n\t/**\n\t * Add to a set\n\t */\n\tpublic async sadd (\n\t\tkey: string,\n\t\tvalue: string | number | Array<string | number>,\n\t\toptions?: IRedisKeyOptions): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\tawait this._client.saddAsync(key, value);\n\n\t\treturn this._checkExpiry(key, options);\n\n\t}\n\n\t/**\n\t * Get a set\n\t */\n\tpublic async smembers (key): Promise<string[]> {\n\n\t\tthis._checkDisposed();\n\n\t\treturn this._client.smembersAsync(key);\n\n\t}\n\n\t/**\n\t * Remove from set\n\t */\n\tpublic async srem (key: string, value: string | number): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\treturn this._client.sremAsync(key, value);\n\n\t}\n\n\t/**\n\t * Scan and delete keys\n\t */\n\tpublic async scanDel (pattern: string): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\tconst self = this;\n\n\t\treturn this.scan(pattern, async (keys) => {\n\n\t\t\tself.emit('info', {message: 'redis#scanDel', data: {keys}});\n\n\t\t\tconst keysToDel = keys.map((key) => {\n\n\t\t\t\treturn key.replace(this._prefix, '');\n\n\t\t\t});\n\n\t\t\treturn self._client.delAsync(keysToDel);\n\n\t\t});\n\n\t}\n\n\t/**\n\t * Scan keys\n\t */\n\tpublic async scan (pattern: string, delegate: (keys: string[]) => Promise<void> | void): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\tconst self = this;\n\n\t\tconst resolvedPattern = this._prefix + pattern;\n\n\t\tlet cursor = '0';\n\t\tlet cycle = 0;\n\n\t\treturn _scan();\n\n\t\tasync function _scan () {\n\n\t\t\tconst res = await self._client.scanAsync(\n\t\t\t\tcursor,\n\t\t\t\t'MATCH', resolvedPattern,\n\t\t\t\t'COUNT', SCAN_LIMIT);\n\n\t\t\tcursor = res[0];\n\t\t\tcycle++;\n\n\t\t\tconst keys = res[1];\n\n\t\t\tif (keys.length > 0) {\n\n\t\t\t\tawait delegate(keys);\n\t\t\t\tself.emit('info', {message: 'redis#scan', data: {cycle, scanned: SCAN_LIMIT * cycle}});\n\t\t\t\tawait processCycle();\n\n\t\t\t} else {\n\n\t\t\t\tself.emit('info', {message: 'redis#scan', data: {cycle, scanned: SCAN_LIMIT * cycle}});\n\t\t\t\tawait processCycle();\n\n\t\t\t}\n\n\t\t\tasync function processCycle () {\n\n\t\t\t\tif (cursor !== '0') {\n\n\t\t\t\t\tawait _scan();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Get the remaining time of a key\n\t */\n\tpublic async ttl (key): Promise<number> {\n\n\t\tthis._checkDisposed();\n\n\t\treturn this._client.ttlAsync(key);\n\n\t}\n\n\t/**\n\t * Set the expiry in seconds\n\t */\n\tprivate async _checkExpiry (key, options): Promise<void> {\n\n\t\tif (options && options.expire) {\n\n\t\t\treturn this._client.expireAsync(key, options.expire);\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Check to make sure this transaction is still open\n\t */\n\tprivate _checkDisposed (): void {\n\n\t\tif (!this._client) {\n\n\t\t\tthrow new Error('Client disposed');\n\n\t\t}\n\n\t}\n\n}\n\nexport default Redis;\n"]} |