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Fix console log not starting near the end of a file

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Ryan Huffman 2016-02-09 14:46:27 -08:00
parent 16cf86ba6b
commit 9e9c124d0b
1 changed files with 20 additions and 8 deletions
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26
server-console/src/log.js
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@ -1,6 +1,7 @@
var remote = require('electron').remote; const remote = require('electron').remote;
var os = require('os'); const os = require('os');
var Tail = require('always-tail'); const fs = require('fs');
const Tail = require('always-tail');
function cleanPath(path) { function cleanPath(path) {
if (os.type() == "Windows_NT") { if (os.type() == "Windows_NT") {
@ -27,7 +28,7 @@ function difference(a, b) {
} }
for (k of b) { for (k of b) {
if (a.indexOf(k) == -1) { if (a.indexOf(k) == -1) {
// In a, but not in b // In b, but not in a
add.push(k); add.push(k);
} }
} }
@ -65,14 +66,25 @@ ready = function() {
diff.subtract.forEach(function(removedLogFilePath) { diff.subtract.forEach(function(removedLogFilePath) {
watchList[removedLogFilePath].unwatch(); watchList[removedLogFilePath].unwatch();
delete watchList[removedLogFilePath]; delete watchList[removedLogFilePath];
console.log("Unwatching", removedLogFilePath);
}); });
diff.add.forEach(function(addedLogFilePath) { diff.add.forEach(function(addedLogFilePath) {
const START_AT_X_BYTES_FROM_END = 0;
var cleanFilePath = cleanPath(addedLogFilePath); var cleanFilePath = cleanPath(addedLogFilePath);
var logTail = new Tail(cleanFilePath, '\n', { start: 0, interval: 500 }); // For larger files we won't want to start tailing from the beginning of the file,
// so start `START_AT_X_BYTES_FROM_END` bytes from the end of the file.
var start = 0;
try {
var fileInfo = fs.statSync(cleanFilePath);
start = Math.max(0, fileInfo.size - START_AT_X_BYTES_FROM_END);
} catch (e) {
console.error("ERROR READING FILE INFO", e);
}
var logTail = new Tail(cleanFilePath, '\n', { start: start, interval: 500 });
logTail.on('line', function(msg) { logTail.on('line', function(msg) {
appendLogMessage(0, msg, stream); appendLogMessage(msg, stream);
}); });
logTail.on('error', function(error) { logTail.on('error', function(error) {
@ -153,7 +165,7 @@ ready = function() {
return !filter || message.toLowerCase().indexOf(filter) >= 0; return !filter || message.toLowerCase().indexOf(filter) >= 0;
} }
function appendLogMessage(pid, msg, name) { function appendLogMessage(msg, name) {
var id = name == "ds" ? "domain-server" : "assignment-client"; var id = name == "ds" ? "domain-server" : "assignment-client";
var $pidLog = $('#' + id); var $pidLog = $('#' + id);