databaseList view and db change functionality added.

app.js

@@ -160,6 +160,36 @@ app.get("/listDatabases",
     */
 ));
 
+app.get("/activeDatabase", function(req, res) {
+  monitor.initialize(function(err, db) {
+    if (err) {
+      res.end();
+    } else {
+      res.json(db.databaseName);
+    }
+  });
+  /*
+  monitor.activeDatabaseInfo("db", function(err, dbName) {
+    res.json(dbName);
+  })
+  */
+});
+
+app.get("/changeDatabase/:db", function(req, res) {
+  if (!req.params.db) {
+    res.end();
+  } else {
+    admin.initialize(function(err, _admin) {
+      if (err) {
+        res.json(false);
+      } else {
+        _admin.db.databaseName = req.params.db;
+        res.json(true);
+      }
+    });
+  }
+});
+
 app.post("/profilingLevel", function(req, res, next) {
   var result = req.body.set;
   if (result) {

mongo/monitor.js

@@ -198,6 +198,17 @@ Monitor.prototype.fn = function(method, callback) {
   return this;
 };
 
+/**
+ * Get list of databases on server.
+ * Must use admin database to execute {"listDatabases":1} command
+ * TODO: switch to admin db before execute
+ *
+ * Mongo shell usage:
+ *   use admin
+ *   db.runCommand({"listDatabases":1});
+ *
+ * @param {function} callback
+ */
 Monitor.prototype.listDatabases = function(callback) {
   var self = this,
       db = this.db;
@@ -228,6 +239,84 @@ Monitor.prototype.listDatabases = function(callback) {
   }
 };
 
+/**
+ * Command execution
+ *
+ * @param {string} db
+ * @param {object} command
+ * @param {function} callback
+ */
+function executeCommand(db, command, callback) {
+  if (!db) {
+    return callback(null, null);
+  } else {
+    db.executeDbCommand(command, function(err, result) {
+      if (err) {
+        console.log(err);
+        return callback(err, null);
+      } else {
+        return callback(null, result);
+      }
+    });
+  }
+}
+
+/**
+ * Gets active databases stats
+ * use stat property to get specific variable.
+ * Without specific variable results are:
+   {
+    "db" : "databaseName",
+    "collections" : 5,
+    "objects" : 23,
+    "avgObjSize" : 138.6086956521739,
+    "dataSize" : 3188,
+    "storageSize" : 110592,
+    "numExtents" : 6,
+    "indexes" : 8,
+    "indexSize" : 65408,
+    "fileSize" : 201326592,
+    "nsSizeMB" : 16,
+    "ok" : 1
+   }
+ *
+ * @param {string} stat (optional)
+ * @param {function} callback
+ */
+Monitor.prototype.activeDatabaseInfo = function(stat, callback) {
+  var self = this,
+      db = this.db,
+      haveStat = true;
+
+  if (!callback && "function" == typeof stat) {
+    callback = stat;
+    haveStat = false;
+  }
+
+  function _callback(err, result) {
+    if (err) {
+      return callback(err);
+    } else {
+      if (result && result.documents && result.documents.length > 0) {
+        var dbs = result.documents[0];
+        return haveStat && dbs.hasOwnProperty(stat) ?
+          callback(null, dbs[stat]) :
+          callback(null, dbs);
+      } else {
+        return callback(null, null);
+      }
+    }
+  }
+
+  if (!db) {
+    this.initialize(function(err, _db) {
+      executeCommand(_db, {"listDatabases":1}, _callback);
+    });
+  } else {
+    executeCommand(db, {"listDatabases":1}, _callback);
+  }
+};
+
 /*
  * Exports
  */

package.json

@@ -1,7 +1,7 @@
 {
     "name": "mon4mongo"
   , "author": "Erhan Gundogan <erhan@trposta.net>"
-  , "version": "0.0.5-2"
+  , "version": "0.0.5-3"
   , "private": false
   , "dependencies": {
       "express": ">= 2.5.1"

public/js/methods.js

@@ -70,18 +70,54 @@ $(function(){
       if (panel && panel.length > 0) {
         return;
       }
-
       bindAddress(item.requestAddress);
     });
   });
+});
 
+function bindDBAddresses() {
+  $(".db-link a").each(function(index, item) {
+    $(this).bind("click", function(event) {
+      event.preventDefault();
+      var address = "/changeDatabase/" + $(this).attr("data-db");
+      $.ajax({
+        url: address,
+        dataType: "json",
+        error: function(jqXHR, textStatus, errorThrown) {
+          alert(textStatus);
+          console.log(jqXHR);
+        },
+        complete: function(jqXHR, textStatus) {
+          highlightActiveDB();
+        }
+      });
+    });
+  });
+}
 
-});
+function highlightActiveDB() {
+  $.ajax({
+    url: "/activeDatabase",
+    dataType: "json",
+    success: function(data, textStatus, jqXHR) {
+      if (data) {
+        $(".db-link a").each(function(index) {
+          var db = $(this).attr("data-db");
+          if (data == db) {
+            $(this).attr("class", "active");
+          } else {
+            $(this).removeAttr("class");
+          }
+        });
+      }
+    }
+  });
+}
 
-function bindAddress(address) {
+function bindAddress(address, responseType) {
   $.ajax({
     url: address,
-    dataType: "html",
+    dataType: responseType || "html",
     success: function(err, result) {
       var vAlign = new vAlignment();
       var element = "#" + vAlign.calculateColumns().getKey().result.key;

public/style/main.css

@@ -124,4 +124,9 @@ footer {
 
 .about h1 {
   color: white;
+}
+
+a.active {
+  font-weight: bold;
+  color: #f00;
 }

views/modules/monitor/listDatabases.jade

@@ -15,8 +15,12 @@
     each value,key in result
       tr
         td
-          .fit-to-cell=value.name
+          .fit-to-cell.db-link
+            a(href="#", data-db=value.name)=value.name
         td
           .fit-to-cell=value.sizeOnDisk
         td
           .fit-to-cell=value.empty
+  script
+    bindDBAddresses();
+    highlightActiveDB()