+ A lot of functionality added

.gitignore

@@ -122,5 +122,6 @@ dist/*
 !dist/.keep
 release/*
 !release/.keep
+exports
 package-lock.json
 config.json

README.md

@@ -8,9 +8,9 @@ This supports mailing for logging what is happening to the databases, future pla
 
 ### Features
 
-- [ ] Database Exporting
+- [x] Database Exporting
 - [ ] Log all errors to a final log
-- [ ] Email the log through email
+- [x] Email the log through email
 - [ ] Discord WebHook
 - [ ] Telegram Hook
 - [ ] Docker Support

config.example.json

@@ -3,7 +3,9 @@
         "parallel_nodes": 2,
         "parallel_node_tasks": 5,
         "separate_into_tables": false,
-        "mysql_dump_settings": "--no-comments"
+        "mysql_dump_settings": "--no-comments",
+        "database_export_path": "./exports",
+        "logs_path": "./logs"
     },
 
     "smtp": {
@@ -12,7 +14,8 @@
         "ssl":  true,
         "username": "",
         "password": "",
-        "email_from": ""
+        "email_from": "",
+        "to": ""
     },
 
     "nodes": [

src/app.ts

@@ -4,6 +4,11 @@ import { getConfig, NodeConnection } from "./helper/config";
 import { SystemControl } from "./models/SystemController";
 // Import the worker processes
 import { DataWorker } from "./models/WorkerProcess";
+// Import the mail model
+import { sendMail } from "./models/MailModel";
+// Import the file system library
+import * as fs from "fs";
+import * as path from "path";
 
 // Global system control singleton
 ((global as any).logger as SystemControl) = new SystemControl();
@@ -21,7 +26,7 @@ async function main() {
     // Spawn in the DataWorkers
     for ( let i: number = 0; i < config.options.parallel_nodes; i++ ) {
         // Create a new data worker
-        workerNodes.push(new DataWorker(config.options.parallel_node_tasks));
+        workerNodes.push(new DataWorker(config.options.parallel_node_tasks, config.options.database_export_path));
     }
 
     /**
@@ -30,7 +35,6 @@ async function main() {
     let workerIndex = 0;
     // Start assigning nodes to the DataWorkers
     for ( let node of config.nodes ) {
-        console.log(`Adding workerIndex[${workerIndex}]`);
         // Add the task to the node
         workerNodes[workerIndex].addNodeTask(node);
         // Increment the worker index
@@ -38,18 +42,49 @@ async function main() {
         if ( workerIndex >= workerNodes.length ) workerIndex = 0;
     }
 
-    console.log(`Succesfully added ${config.nodes.length} Tasks to ${workerNodes.length} Workers`);
+    const responseLogs: Map<string, string[]> = new Map<string, string[]>();
 
-    for( let w of workerNodes ) {
+    // @TODO: Actually make these run in parallel
-        let resolves: PromiseSettledResult<any>[] = await w.startProcessing();
+    for ( let w of workerNodes ) {
 
-        for( let r of resolves ) {
+        const workerStartTime = new Date().getTime();
-            const reason = (r as any).reason;
+        let resolves: PromiseSettledResult<any>[] | string = await w.startProcessing();
+        const workerEndTime: string = Number((workerStartTime - new Date().getTime()) / 1000).toFixed(2) + "s"
 
+        let myLog: string[] = [
+            `runTime: ${workerEndTime}`,
+        ];
 
-            console.log(w.getID(), r);
+        for ( let r of resolves ) {
+            myLog.push(JSON.stringify(r, null, 2));
         }
 
+        responseLogs.set(w.getID(), myLog);
+    }
+
+    // Log to file
+    if ( !!config.options.logs_path ) {
+        // Log to a JSON file path
+        const logFilePath: string = path.join(config.options.logs_path, new Date().getTime() + ".json");
+        const dirPath = path.dirname(logFilePath);
+        // Create the directory if it don't exist.
+        if ( !fs.existsSync(dirPath) ) { fs.mkdirSync(dirPath); }
+
+        // Write to file
+        fs.writeFileSync(logFilePath, JSON.stringify(responseLogs as Object));
+    }
+
+    // Send the log via email
+    if ( !!config.smtp ) {
+        let htmlContent = `<h3>Database Log Report</h3><br>`;
+
+        responseLogs.forEach( (value, key) => {
+            htmlContent += `<h6>${value}<h6>`
+            htmlContent += `<samp>${JSON.stringify(key, null, 4)}</samp>`
+            htmlContent += "<hr>";
+        })
+
+        sendMail(htmlContent, config.smtp.to);
     }
 
 }

src/helper/config.ts

@@ -27,6 +27,16 @@ export interface ConfigOptions {
      * A string of CLI options for the mysql dump command
      */
     mysql_dump_settings: string,
+
+    /**
+     * Path to where to export the database to
+     */
+    database_export_path: string,
+
+    /**
+     * Path to the logs file
+     */
+    logs_path?: string
 }
 
 /**
@@ -58,6 +68,11 @@ export interface SMTPConfig {
      * Secure Connection
      */
     ssl        : boolean,
+
+    /**
+     * Main target email address
+     */
+    to         : string,
 }
 
 export interface NodeConnectionMail {
@@ -139,7 +154,7 @@ export interface ConfigObject {
      * SMTP details for sending out email notifications
      * for real-time updates on erros, health, and backups.
      */
-    smtp:    SMTPConfig,
+    smtp?:    SMTPConfig,
 
     /**
      * An array of Node connections that we should backup

src/models/MailModel.ts

@@ -11,12 +11,12 @@ function getTransporter() : nodemailer.Transporter {
     
     // Generate the transporter
     const transporter = nodemailer.createTransport({
-        host: config?.smtp.host,
+        host: config?.smtp?.host,
-        port: config?.smtp.port,
+        port: config?.smtp?.port,
-        secure: config?.smtp.ssl,
+        secure: config?.smtp?.ssl,
         auth: {
-            user: config?.smtp.username,
+            user: config?.smtp?.username,
-            pass: config?.smtp.password,
+            pass: config?.smtp?.password,
         }
     });
 
@@ -27,22 +27,28 @@ function getTransporter() : nodemailer.Transporter {
 /**
  * Send out an email with the config details.
  */
-export async function sendMail(mailContent: string, toAddress: string, nodeConfig: NodeConnectionMail, ccAddresses?: Array<string>) {
+export async function sendMail(mailContent: string, toAddress: string, ccAddresses: Array<string> = []) {
 
     // Get the transporter
     const transporter = getTransporter();
 
     // Generate the mail options
     const mailOptions : nodemailer.SendMailOptions = {
-        from: config?.smtp.email_from,
+        subject: "Database Backup Update",
-        to: nodeConfig.email_to,
+        from: config?.smtp?.email_from,
-        cc: nodeConfig.email_cc,
+        to: toAddress,
+        cc: ccAddresses,
         html: mailContent,
     }
 
     await new Promise((_r, _e) => {
         transporter.sendMail(mailOptions, (err, info) => {
-            
+            if ( err ) {
+                console.error(err);
+            }
+
+            console.log(info);
+
         })
     })
 

src/models/WorkerProcess.ts

@@ -1,7 +1,20 @@
 import * as mysql from "mysql";
 import { NodeConnection } from "../helper/config";
 import {      uuid      } from "../helper/mainHelper";
+import * as child from 'child_process';
+import * as path from "path";
+import * as fs from "fs";
 
+export enum databaseExportLogType {
+    ERROR   = "Error",
+    SUCCESS = "Success",
+}
+
+export interface databaseExportLog {
+    data:   any,
+    type:   databaseExportLogType,
+    error?: Error,
+}
 
 export class DataWorker {
 
@@ -15,15 +28,20 @@ export class DataWorker {
      */
     private parallelTasksCount: number;
 
+    private exportPath: string;
+
     private id: string;
 
     /**
      * @param parallelTasks The amount of parallel tasks that this Worker can run at once
      */
-    constructor(parallelTasks: number) {
+    constructor(parallelTasks: number, exportPath: string) {
         // Initialize the amount of paralel tasks to run at the same time
         this.parallelTasksCount = parallelTasks;
 
+        // Assign the export path
+        this.exportPath = exportPath;
+
         // Generate an ID for the worker
         this.id = uuid();
     }
@@ -41,9 +59,14 @@ export class DataWorker {
     /**
      * Start processing the node tasks.
      */
-    public startProcessing() : Promise<PromiseSettledResult<any>[]> {
+    public startProcessing() : Promise<PromiseSettledResult<any>[] | string> {
         return new Promise( async (_r, _e) => {
             try {
+
+                if ( this.nodeTasks.length <= 0 ) {
+                    return _r("No tasks to run, skipping");
+                }
+
                 // Go through all of the tasks to run
                 for ( let i = 0; i < this.nodeTasks.length; i++ ) {
                     // Spawn in the task queue
@@ -77,7 +100,7 @@ export class DataWorker {
      * @param task The task to process
      */
     private processTask(task: NodeConnection) {
-        return new Promise<string>( async (_r, _e) => {
+        return new Promise<databaseExportLog[]>( async (_r, _e) => {
             // Connect to the mysql database to test out the connection
             const conn : mysql.Connection = mysql.createConnection({
                 host:     task.hostname,
@@ -102,9 +125,11 @@ export class DataWorker {
                 return _e(error);
             }
 
+            let results: databaseExportLog[] = [];
+
             try {
                 // Dump the database
-                await this.dumpDatabase(conn, task);
+                results = await this.dumpDatabase(conn, task);
             } catch ( err ) {
                 conn.destroy();
                 return _e(err);
@@ -120,18 +145,120 @@ export class DataWorker {
             } catch ( err ) {};
 
             // Stop the code and mark as success
-            _r(`Succesfully ran task ${task.name}`);
+            _r(results);
         })
     }
 
     private dumpDatabase(conn : mysql.Connection, task: NodeConnection) {
-        return new Promise<void>((_r, _e) => {
+        return new Promise<databaseExportLog[]>( async (_r, _e) => {
 
             // Get all of the databases from the connection
-            let databaseList: string[] = [];
+            const databaseList:    string[] = [];
+            let   rawDatabaseList: string[] = [];
 
-            
+            try {
+                rawDatabaseList = await new Promise<string[]>((res, er) => {
+                    conn.query("SHOW DATABASES", (err, rez, fields) => {
+                        if ( err ) {
+                            // Could not list databases, there's definitely something wrong going to happen, do a forceful stop.
+                            return _e(err);
+                        }
 
+                        let databaseList: string[] = [];
+
+                        for ( let db of rez ) {
+                            databaseList.push(db['Database']);
+                        }
+
+                        res(databaseList);
+                    })
+
+                });
+            } catch ( ex ) {
+                return _e(ex);
+            }
+
+            // Filter the database list based on the blacklist/whitelist
+            for ( let db of rawDatabaseList ) {
+                if ( !!task.databases ) {
+
+                    // Check the whitelist
+                    if ( !!task.databases.whitelist ) {
+                        if ( !task.databases.whitelist?.includes(db) ) {
+                            continue;
+                        }
+                    }
+
+                    // Check the blacklist
+                    if ( !!task.databases.blacklist ) {
+                        if ( task.databases.blacklist?.includes(db) ) {
+                            continue;
+                        }
+                    }
+                }
+
+                // The database passed our filters, add it to the final list!
+                databaseList.push(db);
+            }
+
+            // List of logs for the different database dumps
+            const resultLogs: databaseExportLog[] = [];
+
+            // Run the mysqldump for every database
+            for ( let db of databaseList ) {
+                let startTime = new Date().getTime();
+                try {
+                    await new Promise<void>((res, err) => {
+                        // Get the path to export to
+                        const exportPath:    string = path.join( this.exportPath , `${db}.sql`);
+                        // Make sure the folder exists
+                        if ( !fs.existsSync(path.dirname(exportPath)) ) {
+                            fs.mkdirSync(path.dirname(exportPath));
+                        }
+
+                        // Generate the export command
+                        const exportCommand: string = `mysqldump -u${task.username} -p${task.password} -h${task.hostname} -P${task.port} ${db} > ${exportPath}`;
+                        // Execute the export process
+                        child.exec(exportCommand, (execErr, stdout, stderr) => {
+                            if ( execErr ) {
+
+                                resultLogs.push({
+                                    type: databaseExportLogType.ERROR,
+                                    data: {
+                                        runTime: (new Date().getTime() - startTime) + "ms",
+                                        stderr: stderr
+                                    },
+                                    error: execErr,
+                                });
+
+                                return res();
+                            }
+
+                            resultLogs.push({
+                                type: databaseExportLogType.SUCCESS,
+                                data: {
+                                    runTime: (new Date().getTime() - startTime) + "ms",
+                                    stdout: stdout,
+                                },
+                            });
+    
+                            res();
+                        });
+
+                    });
+                } catch ( error ) {
+                    resultLogs.push({
+                        type: databaseExportLogType.ERROR,
+                        data: {
+                            runTime: (new Date().getTime() - startTime) + "ms",
+                        },
+                        error: error
+                    });
+                }
+            }
+
+            // Resolve the promise
+            _r(resultLogs);
         })
     }