Make the JSON filename served by Node.js configurable.

[remoteglot] / www / serve-analysis.js

diff --git a/www/serve-analysis.js b/www/serve-analysis.js
index e45e34f3d3e781e07506bc0f861233e0102569f8..d69c23a7dd2135e43062c710589202319fd432ee 100644 (file)
--- a/www/serve-analysis.js
+++ b/www/serve-analysis.js
@@ -11,9 +11,20 @@ var zlib = require('zlib');
 var delta = require('./js/json_delta.js');
 
 // Constants.
-var JSON_FILENAME = '/srv/analysis.sesse.net/www/analysis.json';
 var HISTORY_TO_KEEP = 5;
-var MINIMUM_VERSION = 2015062104;
+var MINIMUM_VERSION = null;
+
+// Filename to serve.
+var json_filename = '/srv/analysis.sesse.net/www/analysis.json';
+if (process.argv.length >= 3) {
+       json_filename = process.argv[2];
+}
+
+// TCP port to listen on.
+var port = 5000;
+if (process.argv.length >= 4) {
+       port = parseInt(process.argv[3]);
+}
 
 // If set to 1, we are already processing a JSON update and should not
 // start a new one. If set to 2, we are _also_ having one in the queue.
@@ -104,7 +115,7 @@ var create_json_historic_diff = function(new_json, history_left, new_diff_json,
 }
 
 var reread_file = function(event, filename) {
-       if (filename != path.basename(JSON_FILENAME)) {
+       if (filename != path.basename(json_filename)) {
                return;
        }
        if (json_lock >= 2) {
@@ -118,8 +129,8 @@ var reread_file = function(event, filename) {
        }
        json_lock = 1;
 
-       console.log("Rereading " + JSON_FILENAME);
-       fs.open(JSON_FILENAME, 'r+', function(err, fd) {
+       console.log("Rereading " + json_filename);
+       fs.open(json_filename, 'r+', function(err, fd) {
                if (err) throw err;
                fs.fstat(fd, function(err, st) {
                        if (err) throw err;
@@ -140,7 +151,7 @@ var reread_file = function(event, filename) {
        touch_timer = setTimeout(function() {
                console.log("Touching analysis.json due to no other activity");
                var now = Date.now() / 1000;
-               fs.utimes(JSON_FILENAME, now, now);
+               fs.utimes(json_filename, now, now);
        }, 30000);
 }
 var possibly_wakeup_clients = function() {
@@ -239,8 +250,8 @@ var count_viewers = function() {
 
 // Set up a watcher to catch changes to the file, then do an initial read
 // to make sure we have a copy.
-fs.watch(path.dirname(JSON_FILENAME), reread_file);
-reread_file(null, path.basename(JSON_FILENAME));
+fs.watch(path.dirname(json_filename), reread_file);
+reread_file(null, path.basename(json_filename));
 
 var server = http.createServer();
 server.on('request', function(request, response) {
@@ -297,4 +308,5 @@ server.on('connection', function(socket) {
                }
        });
 });
-server.listen(5000);
+
+server.listen(port);