modules/luci-mod-status/htdocs/luci-static/resources/view/status/dmesg.js

   1 'use strict';
   2 'require view';
   3 'require fs';
   4 'require poll';
   5 'require ui';
   6
   7 return view.extend({
   8         retrieveLog: async function() {
   9                 return fs.exec_direct('/bin/dmesg', [ '-r' ]).then(logdata => {
  10                         const loglines = logdata.trim().split(/\n/).map(function(line) {
  11                                 return line.replace(/^<\d+>/, '');
  12                         });
  13                         return { value: loglines.join('\n'), rows: loglines.length + 1 };
  14                 }).catch(function(err) {
  15                         ui.addNotification(null, E('p', {}, _('Unable to load log data: ' + err.message)));
  16                         return '';
  17                 });
  18         },
  19
  20         pollLog: async function() {
  21                 const element = document.getElementById('syslog');
  22                 if (element) {
  23                         const log = await this.retrieveLog();
  24                         element.value = log.value;
  25                         element.rows = log.rows;
  26                 }
  27         },
  28
  29         load: async function() {
  30                 poll.add(this.pollLog.bind(this));
  31                 return await this.retrieveLog();
  32         },
  33
  34         render: function(loglines) {
  35                 var scrollDownButton = E('button', {
  36                                 'id': 'scrollDownButton',
  37                                 'class': 'cbi-button cbi-button-neutral',
  38                         }, _('Scroll to tail', 'scroll to bottom (the tail) of the log file')
  39                 );
  40                 scrollDownButton.addEventListener('click', function() {
  41                         scrollUpButton.focus();
  42                 });
  43
  44                 var scrollUpButton = E('button', {
  45                                 'id' : 'scrollUpButton',
  46                                 'class': 'cbi-button cbi-button-neutral',
  47                         }, _('Scroll to head', 'scroll to top (the head) of the log file')
  48                 );
  49                 scrollUpButton.addEventListener('click', function() {
  50                         scrollDownButton.focus();
  51                 });
  52
  53                 return E([], [
  54                         E('h2', {}, [ _('Kernel Log') ]),
  55                         E('div', { 'id': 'content_syslog' }, [
  56                                 E('div', {'style': 'padding-bottom: 20px'}, [scrollDownButton]),
  57                                 E('textarea', {
  58                                         'id': 'syslog',
  59                                         'style': 'font-size:12px',
  60                                         'readonly': 'readonly',
  61                                         'wrap': 'off',
  62                                         'rows': loglines.rows
  63                                 }, [ loglines.value ]),
  64                                 E('div', {'style': 'padding-bottom: 20px'}, [scrollUpButton])
  65                         ])
  66                 ]);
  67         },
  68
  69         handleSaveApply: null,
  70         handleSave: null,
  71         handleReset: null
  72 });