closes #53 - add influxDB

database/influx/influx.js

@@ -0,0 +1,61 @@
+const Influx = require("influx");
+const logger = require("./../../lib/log")(__filename);
+require("dotenv").config();
+
+const influxModule = {};
+let client;
+const HOST = process.env.INF_HOST||"localhost";
+const PORT = process.env.INF_PORT||8086;
+influxModule.startInflux = () => {
+  client = new Influx.InfluxDB({
+    host: HOST,
+    port: PORT,
+  });
+  logger.info("Sucessfully started InfluxDB");
+};
+
+influxModule.createAccount = async (account) => {
+  const { username, dbPassword } = account;
+  if (!username || !dbPassword) return;
+  try {
+    await client.createUser(username, dbPassword);
+    await client.createDatabase(username);
+    await client.grantPrivilege(username, "WRITE", username);
+    logger.info(
+      `Sucessfully created new user and database with ${username} name`
+    );
+  } catch (err) {
+    logger.error(err);
+    throw new Error(`failed to create new influx user with ${username} name`);
+  }
+};
+influxModule.deleteAccount = async (account) => {
+  const { username } = account;
+  if (!username) return;
+  try {
+    await client.dropUser(username);
+    await client.dropDatabase(username);
+    logger.info(`Sucessfully deleted account with ${username} name`);
+  } catch (err) {
+    logger.error(err);
+    throw new Error(`failed to delete influx ${username} account`);
+  }
+};
+influxModule.checkAccount = async (username) => {
+  if (!username) return;
+  try {
+    const users = await client.getUsers();
+    const user = users.filter((u) => u === username)[0];
+    logger.info(
+      user
+        ? `Found ${user} account with ${username}`
+        : `No account with ${username} were found`
+    );
+    return Boolean(user);
+  } catch (err) {
+    logger.error(err);
+    throw new Error(`failed to check for influx ${username} account`);
+  }
+};
+
+module.exports = influxModule;

database/influx/influx.test.js

@@ -0,0 +1,107 @@
+jest.mock("../../lib/log");
+const logGen = require("../../lib/log");
+const logger = { error: jest.fn(), info: jest.fn() };
+logGen.mockReturnValue(logger);
+jest.mock("dotenv");
+require("dotenv").config();
+jest.mock("influx");
+const { InfluxDB } = require("influx");
+const influx = require("influx");
+const {
+  startInflux,
+  createAccount,
+  deleteAccount,
+  checkAccount,
+} = require("./influx");
+describe("test InfluxDB", () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+  const mockClient = {
+    InfluxDB: jest.fn(),
+    createUser: jest.fn(),
+    createDatabase: jest.fn(),
+    grantPrivilege: jest.fn(),
+    dropUser: jest.fn(),
+    dropDatabase: jest.fn(),
+    getUsers: jest.fn(),
+  };
+  const user = { username: "username", dbPassword: "password" };
+  InfluxDB.mockImplementation(function () {
+    return mockClient;
+  });
+  it("should start influx client", () => {
+    startInflux();
+    expect(influx.InfluxDB).toHaveBeenCalledTimes(1);
+  });
+  it("should use global variables", () => {
+    startInflux();
+    expect(influx.InfluxDB.mock.calls[0][0].host).toEqual("localhost");
+    expect(influx.InfluxDB.mock.calls[0][0].port).toEqual(8086);
+  });
+  describe("createAccount", () => {
+    it("should sucessfully create new account", async () => {
+      await createAccount(user);
+      expect(mockClient.createUser).toHaveBeenCalledTimes(1);
+      expect(mockClient.createDatabase).toHaveBeenCalledTimes(1);
+      expect(mockClient.grantPrivilege).toHaveBeenCalledTimes(1);
+    });
+    it("should call logger in case of an error", async () => {
+      try {
+        mockClient.createUser.mockReturnValue(Promise.reject());
+        expect(await createAccount(user)).rejects.toThrow();
+      } catch (err) {
+        expect(logger.error).toHaveBeenCalledTimes(1);
+      }
+    });
+    it("should return if no account argument was provided", async () => {
+      const res = await createAccount({});
+      expect(res).toEqual(undefined);
+    });
+  });
+  describe("deleteAccount", () => {
+    it("should sucessfully delete account", async () => {
+      await deleteAccount(user);
+      expect(mockClient.dropUser).toHaveBeenCalledTimes(1);
+      expect(mockClient.dropDatabase).toHaveBeenCalledTimes(1);
+    });
+    it("should throw error to invalid credentials", async () => {
+      try {
+        mockClient.dropUser.mockReturnValue(Promise.reject());
+        expect(await deleteAccount(user)).rejects.toThrow();
+      } catch (err) {
+        expect(logger.error).toHaveBeenCalledTimes(1);
+      }
+    });
+    it("should return if no username was provided", async () => {
+      const res = await deleteAccount({});
+      expect(res).toEqual(undefined);
+    });
+  });
+  describe("checkAccount", () => {
+    it("should return true if account exists", async () => {
+      mockClient.getUsers.mockReturnValue(["name", "username"]);
+      const res = await checkAccount("username");
+      expect(mockClient.getUsers).toHaveBeenCalledTimes(1);
+      expect(res).toEqual(true);
+    });
+    it("should return false if account doesnt exitsts", async () => {
+      mockClient.getUsers.mockReturnValue([]);
+      const res = await checkAccount(user);
+      expect(mockClient.getUsers).toHaveBeenCalledTimes(1);
+      expect(res).toEqual(false);
+    });
+    it("should throw an error", async () => {
+      try {
+        mockClient.getUsers.mockReturnValue(Promise.reject());
+        expect(await checkAccount(user)).rejects.toThrow();
+      } catch (err) {
+        expect(logger.error).toHaveBeenCalledTimes(1);
+      }
+    });
+    it("should return if no username was provided", async () => {
+      const res = await checkAccount();
+      expect(res).toEqual(undefined);
+    });
+  });
+});

env.example

@@ -16,16 +16,20 @@ PASSWORD=***
 ALTER_DB=true  
 #password for session-express
 SECRET=***
-#Neo4j graph database url 
-NEO4J_URL=neo4j://104.168.169.204 
-#Neo4j username
-NEO4J_USER=***
-#Neo4j password
-NEO4J_PASSWORD=***
 #production/development flag, in jest tests this varible is "test" by default
 NODE_ENV = development
 #local port, default value 3052
 PORT = 3052
 #hostname adress, default is https://learndatabases.dev, 
 #if you want to use localhost you need to specify port, for example http://localhost:4000
 HOSTNAME = https://learndatabases.dev
+#ArangoDB hostname
+ARANGO_URL = http://localhost:8529
+#ArangoDB username
+ARANGO_USER = root
+#ArangoDB password
+ARANGO_PW = ***
+#InfluxDB hostname
+INF_HOST = localhost
+#InfluxDB port
+INF_PORT = 8086 

lib/util.js

@@ -3,6 +3,7 @@ const db = require("../sequelize/db");
 const pg = require("../database/postgres/pg");
 const arango = require("../database/arango/arango");
 const es = require("../database/elasticsearch/elastic");
+const influx = require("../database/influx/influx");
 const logger = require("./log")(__filename);
 
 const util = {};
@@ -37,6 +38,9 @@ util.cleanAnonymous = async () => {
         const arangoDbExists = await arango.checkIfDatabaseExists(username);
         if (arangoDbExists) await arango.deleteAccount(username);
 
+        const influxDbExists = await influx.checkAccount(username);
+        if (influxDbExists) await influx.deleteAccount(user);
+
         return await user.destroy();
       })
     ).then(() => {

lib/util.test.js

@@ -3,13 +3,15 @@ jest.mock("../sequelize/db");
 jest.mock("../database/postgres/pg");
 jest.mock("../database/arango/arango");
 jest.mock("../database/elasticsearch/elastic");
+jest.mock("../database/influx/influx");
 jest.mock("./log");
 
 const sequelize = require("sequelize");
 const db = require("../sequelize/db");
 const pg = require("../database/postgres/pg");
 const es = require("../database/elasticsearch/elastic");
 const arango = require("../database/arango/arango");
+const influx = require("../database/influx/influx");
 
 sequelize.Op = { and: "and", lt: "lt" };
 const Accounts = {
@@ -21,6 +23,7 @@ db.getModels = () => {
 pg.deletePgAccount = jest.fn();
 es.deleteAccount = jest.fn();
 arango.deleteAccount = jest.fn();
+influx.deleteAccount = jest.fn();
 const logGen = require("./log");
 const logger = {
   info: jest.fn(),
@@ -54,20 +57,24 @@ describe("Testing cleanAnonymous function", () => {
     pg.userHasPgAccount = () => false;
     es.checkAccount = () => false;
     arango.checkIfDatabaseExists = () => false;
+    influx.checkAccount = () => false;
     await util.cleanAnonymous();
     expect(pg.deletePgAccount).not.toHaveBeenCalled();
     expect(es.deleteAccount).not.toHaveBeenCalled();
     expect(arango.deleteAccount).not.toHaveBeenCalled();
+    expect(influx.deleteAccount).not.toHaveBeenCalled();
   });
   it("should call database functions if expired accounts are found", async () => {
     Accounts.findAll.mockReturnValue([{ destroy: () => {} }]);
     pg.userHasPgAccount = () => true;
     es.checkAccount = () => true;
     arango.checkIfDatabaseExists = () => true;
+    influx.checkAccount = () => true;
     await util.cleanAnonymous();
     expect(pg.deletePgAccount).toHaveBeenCalled();
     expect(es.deleteAccount).toHaveBeenCalled();
     expect(arango.deleteAccount).toHaveBeenCalled();
+    expect(influx.deleteAccount).toHaveBeenCalled();
   });
   it("should call logger.error if cleaning fails", async () => {
     Accounts.findAll.mockImplementation(() => {

package.json

@@ -33,6 +33,7 @@
     "ejs": "^3.1.3",
     "express": "^4.17.1",
     "express-session": "^1.17.1",
+    "influx": "^5.6.3",
     "mailgun-js": "^0.22.0",
     "mongodb": "^3.6.1",
     "neo4j-driver": "^4.1.1",