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January 23, 2020 16:15
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Log to Sematext From Web browser
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<html> | |
<body> | |
<script> | |
(function () { | |
const sematextLogToken = 'c0e39f27-xxxx-xxxx-9f27-8818a4f0b59d' | |
var sematextUrl = `https://logsene-receiver.sematext.com/${sematextLogToken}/_bulk/` | |
var logBuffer = '' | |
let consoleLog = console.log | |
let lineCount = 0 | |
const sessionId = /SESS\w*ID=([^;]+)/i.test(document.cookie) ? RegExp.$1 : false | |
let consoleFunctions = { | |
debug: console.debug, | |
error: console.error, | |
warn: console.warn, | |
log: console.log, | |
info: console.info | |
} | |
function logLine (logLine) { | |
var line1 = JSON.stringify({ 'index': { '_index': sematextLogToken, '_type': 'browser_logs' } }) | |
logBuffer = logBuffer + (line1 + '\n' + logLine + '\n') | |
} | |
function sematextShipLogs () { | |
if (lineCount === 0) { | |
return | |
} | |
const http = new XMLHttpRequest() | |
http.open('POST', sematextUrl, true) | |
http.setRequestHeader('Content-type', 'application/json') | |
http.send(logBuffer) | |
http.onresponse = consoleLog | |
logBuffer = '' | |
lineCount = 0 | |
} | |
function sematextLog (severity) { | |
let args = new Array(arguments).slice(1) | |
consoleFunctions[severity](...args) | |
if (arguments.length > 1) { | |
if (typeof arguments[1] === 'string') { | |
logLine(JSON.stringify({ | |
message: arguments[1], | |
'@timestamp': new Date(), | |
sessionId: String(sessionId), | |
severity: severity, | |
location: window.location | |
})) | |
} else { | |
logLine(JSON.stringify({ | |
msg: arguments, | |
'@timestamp': new Date(), | |
sessionId: String(sessionId), | |
severity: severity, | |
location: window.location | |
})) | |
} | |
lineCount++ | |
if (lineCount > 100) { | |
sematextShipLogs() | |
} | |
} | |
} | |
console.log = function () { sematextLog('info', ...arguments) } | |
console.error = function () { sematextLog('error', ...arguments) } | |
console.warn = function () { sematextLog('warn', ...arguments) } | |
console.debug = function () { sematextLog('debug', ...arguments) } | |
setInterval(sematextShipLogs, 5000) | |
})() | |
console.log('Hello from Browser') | |
console.error('Error from Browser') | |
console.log({'name': 'stefan'}, 5, window.name) | |
console.log({'name': 'stefan'}, '5', 10, window.name) | |
</script> | |
</body> | |
Hello | |
</html> |
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