X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=server%2Fserve-analysis.js;h=2e176cc9b211a89410dcdcc96af9da5941269dc7;hb=4b4dbe9808a47d7c61aedc7b70ad4608cd39b7a0;hp=ed11e10a06edd810bc6d09cd99963c2fc615efbb;hpb=a2dd5ea9b3021d406b5b569a5c04ff8b1a48e8aa;p=remoteglot

diff --git a/server/serve-analysis.js b/server/serve-analysis.js
index ed11e10..2e176cc 100644
--- a/server/serve-analysis.js
+++ b/server/serve-analysis.js
@@ -134,6 +134,17 @@ var create_json_historic_diff = function(new_json, history_left, new_diff_json,
 	var histobj = history_left.shift();
 	var diff = delta.JSON_delta.diff(histobj.parsed, new_json.parsed);
 	var diff_text = JSON.stringify(diff);
+
+	// Verify that the delta is correct
+	var base = JSON.parse(histobj.plain);
+	delta.JSON_delta.patch(base, diff);
+	var correct_pv = JSON.stringify(base['pv']);
+	var wrong_pv = JSON.stringify(new_json.parsed['pv']);
+	if (correct_pv !== wrong_pv) {
+		console.log("Patch went wrong:", histobj.plain, new_json.plain);
+		exit();
+	}
+
 	zlib.gzip(diff_text, function(err, buffer) {
 		if (err) throw err;
 		new_diff_json[histobj.last_modified] = {
@@ -146,6 +157,23 @@ var create_json_historic_diff = function(new_json, history_left, new_diff_json,
 	});
 }
 
+function read_entire_file(filename, callback) {
+	fs.open(filename, 'r', function(err, fd) {
+		if (err) throw err;
+		fs.fstat(fd, function(err, st) {
+			if (err) throw err;
+			var buffer = new Buffer(1048576);
+			fs.read(fd, buffer, 0, 1048576, 0, function(err, bytesRead, buffer) {
+				if (err) throw err;
+				fs.close(fd, function() {
+					var contents = buffer.toString('utf8', 0, bytesRead);
+					callback(contents, st.mtime.getTime());
+				});
+			});
+		});
+	});
+}
+
 var reread_file = function(event, filename) {
 	if (filename != path.basename(json_filename)) {
 		return;
@@ -162,19 +190,8 @@ var reread_file = function(event, filename) {
 	json_lock = 1;
 
 	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;
-			var buffer = new Buffer(1048576);
-			fs.read(fd, buffer, 0, 1048576, 0, function(err, bytesRead, buffer) {
-				if (err) throw err;
-				fs.close(fd, function() {
-					var new_json_contents = buffer.toString('utf8', 0, bytesRead);
-					replace_json(new_json_contents, st.mtime.getTime());
-				});
-			});
-		});
+	read_entire_file(json_filename, function(new_json_contents, mtime) {
+		replace_json(new_json_contents, mtime);
 	});
 
 	if (touch_timer !== undefined) {
@@ -183,7 +200,7 @@ 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, function() {});
 	}, 30000);
 }
 var possibly_wakeup_clients = function() {