437 lines
13 KiB
JavaScript
437 lines
13 KiB
JavaScript
/* jslint node: true */
|
|
'use strict';
|
|
|
|
const sysDb = require('./database.js').dbs.system;
|
|
const {
|
|
getISOTimestampString
|
|
} = require('./database.js');
|
|
const Errors = require('./enig_error.js');
|
|
const SysProps = require('./system_property.js');
|
|
|
|
// deps
|
|
const _ = require('lodash');
|
|
const moment = require('moment');
|
|
const SysInfo = require('systeminformation');
|
|
|
|
/*
|
|
System Event Log & Stats
|
|
------------------------
|
|
|
|
System & user specific:
|
|
* Events for generating various statistics, logs such as last callers, etc.
|
|
* Stats such as counters
|
|
|
|
User specific stats are simply an alternate interface to user properties, while
|
|
system wide entries are handled on their own. Both are read accessible non-blocking
|
|
making them easily available for MCI codes for example.
|
|
*/
|
|
class StatLog {
|
|
constructor() {
|
|
this.systemStats = {};
|
|
this.lastSysInfoStatsRefresh = 0;
|
|
}
|
|
|
|
init(cb) {
|
|
//
|
|
// Load previous state/values of |this.systemStats|
|
|
//
|
|
const self = this;
|
|
|
|
sysDb.each(
|
|
`SELECT stat_name, stat_value
|
|
FROM system_stat;`,
|
|
(err, row) => {
|
|
if(row) {
|
|
self.systemStats[row.stat_name] = row.stat_value;
|
|
}
|
|
},
|
|
err => {
|
|
return cb(err);
|
|
}
|
|
);
|
|
}
|
|
|
|
get KeepDays() {
|
|
return {
|
|
Forever : -1,
|
|
};
|
|
}
|
|
|
|
get KeepType() {
|
|
return {
|
|
Forever : 'forever',
|
|
Days : 'days',
|
|
Max : 'max',
|
|
Count : 'max',
|
|
};
|
|
}
|
|
|
|
get Order() {
|
|
return {
|
|
Timestamp : 'timestamp_asc',
|
|
TimestampAsc : 'timestamp_asc',
|
|
TimestampDesc : 'timestamp_desc',
|
|
Random : 'random',
|
|
};
|
|
}
|
|
|
|
setNonPersistentSystemStat(statName, statValue) {
|
|
this.systemStats[statName] = statValue;
|
|
}
|
|
|
|
incrementNonPersistentSystemStat(statName, incrementBy) {
|
|
incrementBy = incrementBy || 1;
|
|
|
|
let newValue = parseInt(this.systemStats[statName]);
|
|
if(!isNaN(newValue)) {
|
|
newValue += incrementBy;
|
|
} else {
|
|
newValue = incrementBy;
|
|
}
|
|
this.setNonPersistentSystemStat(statName, newValue);
|
|
return newValue;
|
|
}
|
|
|
|
setSystemStat(statName, statValue, cb) {
|
|
// live stats
|
|
this.systemStats[statName] = statValue;
|
|
|
|
// persisted stats
|
|
sysDb.run(
|
|
`REPLACE INTO system_stat (stat_name, stat_value)
|
|
VALUES (?, ?);`,
|
|
[ statName, statValue ],
|
|
err => {
|
|
// cb optional - callers may fire & forget
|
|
if(cb) {
|
|
return cb(err);
|
|
}
|
|
}
|
|
);
|
|
}
|
|
|
|
getSystemStat(statName) {
|
|
const stat = this.systemStats[statName];
|
|
|
|
// Some stats are refreshed periodically when they are
|
|
// being accessed (e.g. "looked at"). This is handled async.
|
|
this._refreshSystemStat(statName);
|
|
|
|
return stat;
|
|
}
|
|
|
|
getFriendlySystemStat(statName, defaultValue) {
|
|
return (this.getSystemStat(statName) || defaultValue).toLocaleString();
|
|
}
|
|
|
|
getSystemStatNum(statName) {
|
|
return parseInt(this.getSystemStat(statName)) || 0;
|
|
}
|
|
|
|
incrementSystemStat(statName, incrementBy, cb) {
|
|
const newValue = this.incrementNonPersistentSystemStat(statName, incrementBy);
|
|
return this.setSystemStat(statName, newValue, cb);
|
|
}
|
|
|
|
//
|
|
// User specific stats
|
|
// These are simply convenience methods to the user's properties
|
|
//
|
|
setUserStatWithOptions(user, statName, statValue, options, cb) {
|
|
// note: cb is optional in PersistUserProperty
|
|
user.persistProperty(statName, statValue, cb);
|
|
|
|
if(!options.noEvent) {
|
|
const Events = require('./events.js'); // we need to late load currently
|
|
Events.emit(Events.getSystemEvents().UserStatSet, { user, statName, statValue } );
|
|
}
|
|
}
|
|
|
|
setUserStat(user, statName, statValue, cb) {
|
|
return this.setUserStatWithOptions(user, statName, statValue, {}, cb);
|
|
}
|
|
|
|
getUserStat(user, statName) {
|
|
return user.properties[statName];
|
|
}
|
|
|
|
getUserStatNum(user, statName) {
|
|
return parseInt(this.getUserStat(user, statName)) || 0;
|
|
}
|
|
|
|
incrementUserStat(user, statName, incrementBy, cb) {
|
|
incrementBy = incrementBy || 1;
|
|
|
|
const oldValue = user.getPropertyAsNumber(statName) || 0;
|
|
const newValue = oldValue + incrementBy;
|
|
|
|
this.setUserStatWithOptions(
|
|
user,
|
|
statName,
|
|
newValue,
|
|
{ noEvent : true },
|
|
err => {
|
|
if(!err) {
|
|
const Events = require('./events.js'); // we need to late load currently
|
|
Events.emit(
|
|
Events.getSystemEvents().UserStatIncrement,
|
|
{
|
|
user,
|
|
statName,
|
|
oldValue,
|
|
statIncrementBy : incrementBy,
|
|
statValue : newValue
|
|
}
|
|
);
|
|
}
|
|
|
|
if(cb) {
|
|
return cb(err);
|
|
}
|
|
}
|
|
);
|
|
}
|
|
|
|
// the time "now" in the ISO format we use and love :)
|
|
get now() {
|
|
return getISOTimestampString();
|
|
}
|
|
|
|
appendSystemLogEntry(logName, logValue, keep, keepType, cb) {
|
|
sysDb.run(
|
|
`INSERT INTO system_event_log (timestamp, log_name, log_value)
|
|
VALUES (?, ?, ?);`,
|
|
[ this.now, logName, logValue ],
|
|
() => {
|
|
//
|
|
// Handle keep
|
|
//
|
|
if(-1 === keep) {
|
|
if(cb) {
|
|
return cb(null);
|
|
}
|
|
return;
|
|
}
|
|
|
|
switch(keepType) {
|
|
// keep # of days
|
|
case 'days' :
|
|
sysDb.run(
|
|
`DELETE FROM system_event_log
|
|
WHERE log_name = ? AND timestamp <= DATETIME("now", "-${keep} day");`,
|
|
[ logName ],
|
|
err => {
|
|
// cb optional - callers may fire & forget
|
|
if(cb) {
|
|
return cb(err);
|
|
}
|
|
}
|
|
);
|
|
break;
|
|
|
|
case 'count':
|
|
case 'max' :
|
|
// keep max of N/count
|
|
sysDb.run(
|
|
`DELETE FROM system_event_log
|
|
WHERE id IN(
|
|
SELECT id
|
|
FROM system_event_log
|
|
WHERE log_name = ?
|
|
ORDER BY id DESC
|
|
LIMIT -1 OFFSET ${keep}
|
|
);`,
|
|
[ logName ],
|
|
err => {
|
|
if(cb) {
|
|
return cb(err);
|
|
}
|
|
}
|
|
);
|
|
break;
|
|
|
|
case 'forever' :
|
|
default :
|
|
// nop
|
|
break;
|
|
}
|
|
}
|
|
);
|
|
}
|
|
|
|
/*
|
|
Find System Log entries by |filter|:
|
|
|
|
filter.logName (required)
|
|
filter.resultType = (obj) | count
|
|
where obj contains timestamp and log_value
|
|
filter.limit
|
|
filter.date - exact date to filter against
|
|
filter.order = (timestamp) | timestamp_asc | timestamp_desc | random
|
|
*/
|
|
findSystemLogEntries(filter, cb) {
|
|
filter = filter || {};
|
|
if(!_.isString(filter.logName)) {
|
|
return cb(Errors.MissingParam('filter.logName is required'));
|
|
}
|
|
|
|
filter.resultType = filter.resultType || 'obj';
|
|
filter.order = filter.order || 'timestamp';
|
|
|
|
let sql;
|
|
if('count' === filter.resultType) {
|
|
sql =
|
|
`SELECT COUNT() AS count
|
|
FROM system_event_log`;
|
|
} else {
|
|
sql =
|
|
`SELECT timestamp, log_value
|
|
FROM system_event_log`;
|
|
}
|
|
|
|
sql += ' WHERE log_name = ?';
|
|
|
|
if(filter.date) {
|
|
filter.date = moment(filter.date);
|
|
sql += ` AND DATE(timestamp, "localtime") = DATE("${filter.date.format('YYYY-MM-DD')}")`;
|
|
}
|
|
|
|
if('count' !== filter.resultType) {
|
|
switch(filter.order) {
|
|
case 'timestamp' :
|
|
case 'timestamp_asc' :
|
|
sql += ' ORDER BY timestamp ASC';
|
|
break;
|
|
|
|
case 'timestamp_desc' :
|
|
sql += ' ORDER BY timestamp DESC';
|
|
break;
|
|
|
|
case 'random' :
|
|
sql += ' ORDER BY RANDOM()';
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(_.isNumber(filter.limit) && 0 !== filter.limit) {
|
|
sql += ` LIMIT ${filter.limit}`;
|
|
}
|
|
|
|
sql += ';';
|
|
|
|
if('count' === filter.resultType) {
|
|
sysDb.get(sql, [ filter.logName ], (err, row) => {
|
|
return cb(err, row ? row.count : 0);
|
|
});
|
|
} else {
|
|
sysDb.all(sql, [ filter.logName ], (err, rows) => {
|
|
return cb(err, rows);
|
|
});
|
|
}
|
|
}
|
|
|
|
getSystemLogEntries(logName, order, limit, cb) {
|
|
if(!cb && _.isFunction(limit)) {
|
|
cb = limit;
|
|
limit = 0;
|
|
} else {
|
|
limit = limit || 0;
|
|
}
|
|
|
|
const filter = {
|
|
logName,
|
|
order,
|
|
limit,
|
|
};
|
|
return this.findSystemLogEntries(filter, cb);
|
|
}
|
|
|
|
appendUserLogEntry(user, logName, logValue, keepDays, cb) {
|
|
sysDb.run(
|
|
`INSERT INTO user_event_log (timestamp, user_id, session_id, log_name, log_value)
|
|
VALUES (?, ?, ?, ?, ?);`,
|
|
[ this.now, user.userId, user.sessionId, logName, logValue ],
|
|
err => {
|
|
if(err) {
|
|
if(cb) {
|
|
cb(err);
|
|
}
|
|
return;
|
|
}
|
|
//
|
|
// Handle keepDays
|
|
//
|
|
if(-1 === keepDays) {
|
|
if(cb) {
|
|
return cb(null);
|
|
}
|
|
return;
|
|
}
|
|
|
|
sysDb.run(
|
|
`DELETE FROM user_event_log
|
|
WHERE user_id = ? AND log_name = ? AND timestamp <= DATETIME("now", "-${keepDays} day");`,
|
|
[ user.userId, logName ],
|
|
err => {
|
|
// cb optional - callers may fire & forget
|
|
if(cb) {
|
|
return cb(err);
|
|
}
|
|
}
|
|
);
|
|
}
|
|
);
|
|
}
|
|
|
|
initUserEvents(cb) {
|
|
const systemEventUserLogInit = require('./sys_event_user_log.js');
|
|
systemEventUserLogInit(this);
|
|
return cb(null);
|
|
}
|
|
|
|
_refreshSystemStat(statName) {
|
|
switch (statName) {
|
|
case SysProps.SystemLoadStats :
|
|
case SysProps.SystemMemoryStats :
|
|
return this._refreshSysInfoStats();
|
|
}
|
|
}
|
|
|
|
_refreshSysInfoStats() {
|
|
const now = Math.floor(Date.now() / 1000);
|
|
if (now < this.lastSysInfoStatsRefresh + 5) {
|
|
return;
|
|
}
|
|
|
|
this.lastSysInfoStatsRefresh = now;
|
|
|
|
const basicSysInfo = {
|
|
mem : 'total, free',
|
|
currentLoad : 'avgload, currentLoad',
|
|
};
|
|
|
|
SysInfo.get(basicSysInfo)
|
|
.then(sysInfo => {
|
|
const memStats = {
|
|
totalBytes : sysInfo.mem.total,
|
|
freeBytes : sysInfo.mem.free,
|
|
};
|
|
|
|
this.setNonPersistentSystemStat(SysProps.SystemMemoryStats, memStats);
|
|
|
|
const loadStats = {
|
|
// Not avail on BSD, yet.
|
|
average : _.get(sysInfo, 'currentLoad.avgload', 0),
|
|
current : _.get(sysInfo, 'currentLoad.currentLoad', 0),
|
|
};
|
|
|
|
this.setNonPersistentSystemStat(SysProps.SystemLoadStats, loadStats);
|
|
})
|
|
.catch(err => {
|
|
// :TODO: log me
|
|
});
|
|
}
|
|
}
|
|
|
|
module.exports = new StatLog();
|