implement tail send/receive on new file content

debomatic-webui/app.js

@@ -10,6 +10,7 @@ var express = require('express')
   , fs = require('fs')
   , path = require('path')
   , utils = require('./utils.js')
+  , Tail = require('tail').Tail
 
 var app = module.exports = express.createServer();
 
@@ -39,16 +40,28 @@ var io = require('socket.io').listen(app);
 // Routes
 app.get('/', routes.index);
 
-function watch_dir(event_name, socket, data, watch_path, updater) {
+function watch_path_onsocket(event_name, socket, data, watch_path, updater) {
     name = "watcher-" + event_name
     socket.get(name, function (err, watcher) {
         if (watcher)
             watcher.close()
         try {
+            fs.stat(watch_path, function(err, stats) {
+                watcher = null
+                if (stats.isDirectory()) {
                     watcher = fs.watch(watch_path, {persistent: true}, function (event, fileName) {
                     if(event == 'rename')
                         updater(socket, data)
                     })
+                }
+                else {
+                    watcher = new Tail(watch_path)
+                    watcher.on('line', function(new_content) {
+                        data.file.new_content = new_content + '\n'
+                        updater(socket, data)
+                    })
+                }
+            })
             socket.set(name, watcher)
         } catch (err_watch) {}
     })
@@ -62,7 +75,7 @@ io.sockets.on('connection', function(socket) {
         if (! utils.check_data_distribution(data))
             return
         distribution_path = path.join(config.debomatic_path, data.distribution.name, 'pool')
-        watch_dir('get_distribution_packages', socket, data, distribution_path, send.distribution_packages)
+        watch_path_onsocket('get_distribution_packages', socket, data, distribution_path, send.distribution_packages)
         send.distribution_packages(socket, data);
     })
     
@@ -70,7 +83,7 @@ io.sockets.on('connection', function(socket) {
         if (! utils.check_data_package(data))
             return
         package_path = utils.get_package_path(data)
-        watch_dir('get_package_file_list', socket, data, package_path, send.package_file_list)
+        watch_path_onsocket('get_package_file_list', socket, data, package_path, send.package_file_list)
         send.package_file_list(socket, data)
         
     })
@@ -78,6 +91,8 @@ io.sockets.on('connection', function(socket) {
     socket.on('get_file', function (data){
         if (! utils.check_data_file(data))
             return
+        file_path = utils.get_file_path(data)
+        watch_path_onsocket('get_file', socket, data, file_path, send.file_newcontent)
         send.file(socket, data)
     })
 });

debomatic-webui/package.json

@@ -8,6 +8,6 @@
     , "ejs": ">= 0.0.1"
     , "socket.io": "*"
     , "node-fs": "*"
-    , "node-tail": "*"
+    , "tail": "*"
   }
 }

debomatic-webui/send.js

@@ -111,6 +111,10 @@ debomatic_sender = {
     
     file: function(socket, data) {
         __send_file(socket, data)
+    },
+    
+    file_newcontent: function(socket, data) {
+        socket.emit('file_newcontent', data);
     }
 }
 

debomatic-webui/views/layout.ejs

@@ -21,7 +21,8 @@
                 socket.emit("get_package_file_list", data)
             }
             if (info.length >= 4) {
-                data.file = info[3]
+                data.file = {}
+                data.file.name = info[3]
                 socket.emit("get_file", data)
             }
         }
@@ -50,6 +51,15 @@
             })
         })
         
+        socket.on('file', function (data) {
+            $("#file").html(data.file.content)
+        })
+        
+        socket.on('file_newcontent', function(data) {
+            new_html =  $("#file").html() + data.file.new_content
+            $("#file").html(new_html)
+        })
+        
         socket.on('error', function() { console.error(arguments) });
         
         $(window).on('hashchange', function() {
@@ -66,6 +76,7 @@
        <ul id="distributions"></ul>
        <ul id="packages"></ul>
        <ul id="files"></ul>
+       <pre id="file"></pre>
     <%- body %>
   </body>
 </html>