Remove redis

lib/cache.js

@@ -22,127 +22,40 @@ const config = require("./config");
 
 const MAX_CACHE_TTL = config.get("MAX_CACHE_TTL");
 
-let redisClient;
 let mongoClient;
 let mongoCollection;
 let mongoTimeOffset = 0;
 
 function connect(callback) {
-  const REDIS_HOST = config.get("REDIS_HOST");
+  const mongodb = require("mongodb");
+  const MONGODB_CONNECTION_URL = config.get("MONGODB_CONNECTION_URL");
 
-  if (REDIS_HOST) {
-    const redis = require("redis");
-    const REDIS_PORT = config.get("REDIS_PORT");
-    const REDIS_DB = config.get("REDIS_DB");
-    redisClient = redis.createClient(REDIS_PORT, REDIS_HOST);
-    redisClient.select(REDIS_DB, err => {
-      exports.get = redisGet;
-      exports.set = redisSet;
-      exports.del = redisDel;
-      exports.pop = redisPop;
-      exports.lock = redisLock;
-      callback(err);
-    });
-  } else {
-    const mongodb = require("mongodb");
-    const MONGODB_CONNECTION_URL = config.get("MONGODB_CONNECTION_URL");
+  mongodb.MongoClient.connect(
+    MONGODB_CONNECTION_URL,
+    { useNewUrlParser: true },
+    (err, client) => {
+      if (err) return void callback(err);
 
-    mongodb.MongoClient.connect(
-      MONGODB_CONNECTION_URL,
-      { useNewUrlParser: true },
-      (err, client) => {
+      const db = client.db();
+      mongoClient = client;
+      mongoCollection = db.collection("cache");
+      mongoCollection.createIndex({ expire: 1 }, { expireAfterSeconds: 0 });
+
+      const now = Date.now();
+      db.command({ hostInfo: 1 }, (err, res) => {
         if (err) return void callback(err);
-
-        const db = client.db();
-        mongoClient = client;
-        mongoCollection = db.collection("cache");
-        mongoCollection.createIndex({ expire: 1 }, { expireAfterSeconds: 0 });
-
-        const now = Date.now();
-        db.command({ hostInfo: 1 }, (err, res) => {
-          if (err) return void callback(err);
-          mongoTimeOffset = res.system.currentTime.getTime() - now;
-          exports.get = mongoGet;
-          exports.set = mongoSet;
-          exports.del = mongoDel;
-          exports.pop = mongoPop;
-          exports.lock = mongoLock;
-          callback();
-        });
-      }
-    );
-  }
+        mongoTimeOffset = res.system.currentTime.getTime() - now;
+        callback();
+      });
+    }
+  );
 }
 
 function disconnect() {
-  if (redisClient) redisClient.quit();
   if (mongoClient) mongoClient.close();
 }
 
-function redisGet(key, callback) {
-  if (Array.isArray(key)) redisClient.mget(key, callback);
-  else redisClient.get(key, callback);
-}
-
-function redisDel(key, callback) {
-  redisClient.del(key, callback);
-}
-
-function redisSet(key, value, ttl, callback) {
-  if (!callback && typeof v === "function") {
-    callback = ttl;
-    ttl = null;
-  }
-
-  if (!ttl) ttl = MAX_CACHE_TTL;
-
-  redisClient.setex(key, ttl, value, callback);
-}
-
-function redisPop(key, callback) {
-  const POP_SCRIPT =
-    'local v=redis.call("get",KEYS[1]);redis.call("del",KEYS[1]);return v;';
-  redisClient.eval(POP_SCRIPT, 1, key, callback);
-}
-
-function redisLock(lockName, ttl, callback) {
-  const UNLOCK_SCRIPT =
-    'if redis.call("get", KEYS[1]) == ARGV[1] then return redis.call("del", KEYS[1]) else return 0 end';
-  const EXTEND_SCRIPT =
-    'if redis.call("get", KEYS[1]) == ARGV[1] then return redis.call("pexpire", KEYS[1], ARGV[2]) else return 0 end';
-  const token = Math.random()
-    .toString(36)
-    .slice(2);
-
-  function unlockOrExtend(extendTtl) {
-    if (!extendTtl) {
-      redisClient.eval(UNLOCK_SCRIPT, 1, lockName, token, (err, res) => {
-        if (err || !res) throw err || new Error("Lock expired");
-      });
-    } else {
-      redisClient.eval(
-        EXTEND_SCRIPT,
-        1,
-        lockName,
-        token,
-        extendTtl,
-        (err, res) => {
-          if (err || !res) throw err || new Error("Lock expired");
-        }
-      );
-    }
-  }
-
-  redisClient.set(lockName, token, "NX", "EX", ttl, (err, res) => {
-    if (err || res) return void callback(err, unlockOrExtend);
-
-    setTimeout(() => {
-      redisLock(lockName, ttl, callback);
-    }, 200);
-  });
-}
-
-function mongoGet(key, callback) {
+function get(key, callback) {
   const expire = new Date(Date.now() - mongoTimeOffset);
   if (Array.isArray(key)) {
     mongoCollection.find({ _id: { $in: key } }).toArray((err, res) => {
@@ -170,13 +83,13 @@ function mongoGet(key, callback) {
   }
 }
 
-function mongoDel(key, callback) {
+function del(key, callback) {
   if (Array.isArray(key))
     mongoCollection.deleteMany({ _id: { $in: key } }, callback);
   else mongoCollection.deleteOne({ _id: key }, callback);
 }
 
-function mongoSet(key, value, ttl, callback) {
+function set(key, value, ttl, callback) {
   if (!callback && typeof v === "function") {
     callback = ttl;
     ttl = null;
@@ -193,7 +106,7 @@ function mongoSet(key, value, ttl, callback) {
   );
 }
 
-function mongoPop(key, callback) {
+function pop(key, callback) {
   mongoCollection.findOneAndDelete({ _id: key }, (err, res) => {
     if (err || !res["value"]) return void callback(err);
 
@@ -204,7 +117,7 @@ function mongoPop(key, callback) {
   });
 }
 
-function mongoLock(lockName, ttl, callback) {
+function lock(lockName, ttl, callback) {
   const token = Math.random()
     .toString(36)
     .slice(2);
@@ -238,7 +151,7 @@ function mongoLock(lockName, ttl, callback) {
     err => {
       if (err && err.code === 11000) {
         return setTimeout(() => {
-          mongoLock(lockName, ttl, callback);
+          lock(lockName, ttl, callback);
         }, 200);
       }
 
@@ -249,3 +162,8 @@ function mongoLock(lockName, ttl, callback) {
 
 exports.connect = connect;
 exports.disconnect = disconnect;
+exports.get = get;
+exports.set = set;
+exports.del = del;
+exports.pop = pop;
+exports.lock = lock;

lib/config.js

@@ -27,9 +27,6 @@ const options = {
     type: "string",
     default: "mongodb://127.0.0.1/genieacs"
   },
-  REDIS_PORT: { type: "int", default: 6379 },
-  REDIS_HOST: { type: "string", default: "" },
-  REDIS_DB: { type: "int", default: 0 },
 
   CWMP_WORKER_PROCESSES: { type: "int", default: 0 },
   CWMP_PORT: { type: "int", default: 7547 },

package.json

@@ -32,9 +32,6 @@
     "parsimmon": "^1.12.0",
     "seedrandom": "^2.4.4"
   },
-  "optionalDependencies": {
-    "redis": "^2.6.5"
-  },
   "devDependencies": {
     "ava": "^1.1.0",
     "babel-eslint": "^8.2.6",