feathers-redis-caching
Version:
Redis cache for feathers service
221 lines • 11.2 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var async_1 = __importDefault(require("async"));
var DISABLE_REDIS_CACHE = process.env.DISABLE_REDIS_CACHE;
var HTTP_OK = 200;
var HTTP_NO_CONTENT = 204;
var HTTP_SERVER_ERROR = 500;
var HTTP_NOT_FOUND = 404;
var DEFAULT_REDIS_CLIENT = 'redisClient';
var serviceClearSingle = function (options) {
if (options === void 0) { options = {}; }
var redisClient = options.redisClient || DEFAULT_REDIS_CLIENT;
return {
setup: function (app, path) {
this.app = app;
this.path = path;
},
find: function (params) {
return __awaiter(this, void 0, void 0, function () {
var client, target;
return __generator(this, function (_a) {
client = this.app.get(redisClient);
target = params.query.target;
if (!target) {
return [2, {
message: 'You must provide key',
status: HTTP_NOT_FOUND
}];
}
if (!client) {
return [2, {
message: 'Redis unavailable',
status: HTTP_SERVER_ERROR
}];
}
return [2, new Promise(function (resolve) {
client.get(target, function (err, reply) {
if (err) {
return resolve({ message: 'something went wrong' + err.message });
}
if (!reply) {
return resolve({
message: "cache already cleared for key " + target,
status: HTTP_NO_CONTENT
});
}
client.del(target, function (err, reply) {
if (err) {
return resolve({ message: 'something went wrong' + err.message });
}
if (!reply) {
return resolve({
message: "cache already cleared for key " + target,
status: HTTP_NO_CONTENT
});
}
resolve({
message: "cache cleared for key " + target,
status: HTTP_OK
});
});
});
})];
});
});
}
};
};
var serviceClearGroup = function (options) {
if (options === void 0) { options = {}; }
var redisClient = options.redisClient || DEFAULT_REDIS_CLIENT;
return {
setup: function (app, path) {
this.app = app;
this.path = path;
},
find: function (params) {
return __awaiter(this, void 0, void 0, function () {
var client, target;
var _this = this;
return __generator(this, function (_a) {
client = this.app.get(redisClient);
target = params.query.target;
if (!client) {
return [2, {
message: 'Redis unavailable',
status: HTTP_SERVER_ERROR
}];
}
return [2, new Promise(function (resolve) {
client.lrange("group-" + target, 0, -1, function (err, reply) {
if (err) {
return resolve({ message: 'something went wrong' + err.message });
}
if (!reply || !Array.isArray(reply) || reply.length <= 0) {
return resolve({
message: "cache already cleared for the group key: " + target,
status: HTTP_NO_CONTENT
});
}
async_1.default.eachOfLimit(reply, 10, async_1.default.asyncify(function (key) { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2, new Promise(function (res) {
client.del(key, function (err, reply) {
if (err) {
return res({ message: 'something went wrong' + err.message });
}
if (!reply) {
return res({
message: "cache already cleared for key " + target,
status: HTTP_NO_CONTENT
});
}
res({
message: "cache cleared for key " + target,
status: HTTP_OK
});
});
})];
});
}); }), function (err) {
if (err) {
return resolve({ message: 'something went wrong' + err.message });
}
resolve({
message: "cache cleared for the group key: " + target,
status: HTTP_OK
});
});
});
})];
});
});
}
};
};
var serviceClearAll = function (options) {
if (options === void 0) { options = {}; }
var redisClient = options.redisClient || DEFAULT_REDIS_CLIENT;
return {
setup: function (app, path) {
this.app = app;
this.path = path;
},
find: function () {
return __awaiter(this, void 0, void 0, function () {
var client;
return __generator(this, function (_a) {
client = this.app.get(redisClient);
if (!client) {
return [2, {
message: 'Redis unavailable',
status: HTTP_SERVER_ERROR
}];
}
return [2, new Promise(function (resolve) {
client.flushdb(function () {
resolve({
message: 'Cache cleared',
status: HTTP_OK
});
});
})];
});
});
}
};
};
exports.default = (function (options) {
if (options === void 0) { options = {}; }
var pathPrefix = options.pathPrefix || '/cache';
var redisClient = options.redisClient || DEFAULT_REDIS_CLIENT;
return function () {
var app = this;
if (!DISABLE_REDIS_CACHE) {
app.use(pathPrefix + "/clear/single", serviceClearSingle({ redisClient: redisClient }));
app.use(pathPrefix + "/clear/group", serviceClearGroup({ redisClient: redisClient }));
app.use(pathPrefix + "/clear/all", serviceClearAll({ redisClient: redisClient }));
}
};
});
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