Feature : #14 : _health and _version

lib/xapi.js

@@ -3,8 +3,11 @@
 var Xsql = require('./xsql.js');
 var Xctrl = require('./xctrl.js');
 var multer = require('multer');
-var path = require('path');
+const path = require('path');
+const pkginfo = require('pkginfo')(module);
 
+const v8 = require('v8'),
+  os = require('os');
 
 //define class
 class Xapi {
@@ -267,6 +270,12 @@ class Xapi {
       this.app.get('/download', this.downloadFile.bind(this));
       /**************** END : multer routes ****************/
 
+      /**************** START : health and version ****************/
+      this.app.get('/_health', this.asyncMiddleware(this.health.bind(this)));
+      this.app.get('/_version', this.asyncMiddleware(this.version.bind(this)));
+      /**************** END : health and version ****************/
+
+
       stat.api += 4;
 
     }
@@ -371,6 +380,50 @@ class Xapi {
 
   /**************** END : files related ****************/
 
+
+  /**************** START : health and version ****************/
+
+  async getMysqlUptime() {
+    let v = await this.mysql.exec('SHOW GLOBAL STATUS LIKE \'Uptime\';', []);
+    return v[0]['Value'];
+  }
+
+  async getMysqlHealth() {
+    let v = await this.mysql.exec('select version() as version', []);
+    return v[0]['version'];
+  }
+
+  async health(req, res) {
+
+    let status = {};
+    status['process_uptime'] = process.uptime();
+    status['mysql_uptime'] = await this.getMysqlUptime();
+
+    if (Object.keys(req.query).length) {
+      status['process_memory_usage'] = process.memoryUsage;
+      status['os_total_memory'] = os.totalmem();
+      status['os_free_memory'] = os.freemem();
+      status['os_load_average'] = os.loadavg();
+      status['v8_heap_statistics'] = v8.getHeapStatistics();
+    }
+
+    res.json(status);
+
+  }
+
+  async version(req, res) {
+
+    let version = {};
+
+    version['Xmysql'] = pkginfo.version;
+    version['mysql'] = await this.getMysqlHealth();
+    version['node'] = process.versions.node;
+    res.json(version);
+
+  }
+
+  /**************** END : health and version ****************/
+
 }