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Client from './client';\nimport { IRedisKeyOptions } from './types/redis';\n\nexport default class Transaction {\n\n\tprivate _client: any;\n\n\tprivate _multi: any | null;\n\n\t/**\n\t * Constructor\n\t */\n\tconstructor (client: Client) {\n\n\t\tthis._client = client;\n\t\tthis._multi = client.client.multi();\n\n\t}\n\n\t/**\n\t * Commit a transaction\n\t */\n\tpublic async commit (): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\tconst result = await this._multi.execAsync();\n\n\t\tthis.rollback();\n\n\t\tif (!result) {\n\n\t\t\tthrow new Error('Transaction failed');\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Roll the transaction back\n\t */\n\tpublic rollback (): void {\n\n\t\tthis._checkDisposed();\n\n\t\tthis._multi.discard();\n\t\tthis._multi = null;\n\n\t}\n\n\t/**\n\t * Is a transaction still open\n\t */\n\tpublic get isOpen (): boolean {\n\n\t\treturn !!this._multi;\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\tthis._multi.set(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\tthis._multi.incrby(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\tthis._multi.incrbyfloat(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\tthis._multi.hincrby(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) {\n\n\t\tthis._checkDisposed();\n\n\t\tthis._multi.hincrbyfloat(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\tthis._multi.hmset(key, hash);\n\n\t\treturn this._checkExpiry(key, options);\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\tthis._multi.del(key);\n\n\t}\n\n\t/**\n\t * Add to a set\n\t */\n\tpublic async sadd (key: string, value: string | number, options?: IRedisKeyOptions): Promise<void> {\n\n\t\tthis._checkDisposed();\n\n\t\tthis._multi.sadd(key, value);\n\n\t\treturn this._checkExpiry(key, options);\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\tthis._multi.srem(key, value);\n\n\t}\n\n\t/**\n\t * Set the expiry in seconds\n\t */\n\tprivate async _checkExpiry (key: string, options?: IRedisKeyOptions): Promise<void> {\n\n\t\tif (options && options.expire) {\n\n\t\t\tthis._multi.expire(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._multi) {\n\n\t\t\tthrow new Error('Transaction disposed');\n\n\t\t}\n\n\t}\n\n}\n"]} |