nestjs-loki-logger
Version:
A Nest Js module to push logs to grafana loki extending the built-in nest js Logger Class.
106 lines • 4.73 kB
JavaScript
;
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
return function (target, key) { decorator(target, key, paramIndex); }
};
var LokiLogger_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.LokiLogger = void 0;
const common_1 = require("@nestjs/common");
const axios_1 = require("axios");
let LokiLogger = exports.LokiLogger = LokiLogger_1 = class LokiLogger extends common_1.Logger {
constructor(context) {
super(context);
this.context = context;
}
static forRoot(options) {
var _a, _b;
this.lokiUrl = options.lokiUrl;
this.defaultLabels = (_a = options.labels) !== null && _a !== void 0 ? _a : {};
this.logToConsole = (_b = options.logToConsole) !== null && _b !== void 0 ? _b : false;
this.gzip = !!options.gzip;
return LokiLogger_1;
}
error(message, trace, context, labels) {
LokiLogger_1.sendLokiRequest(Object.assign(Object.assign(Object.assign({}, LokiLogger_1.defaultLabels), labels), { context: context !== null && context !== void 0 ? context : this.context, level: 'error' }), message);
if (LokiLogger_1.logToConsole) {
super.error(message, trace, context);
}
}
log(message, context, labels) {
LokiLogger_1.sendLokiRequest(Object.assign(Object.assign(Object.assign({}, LokiLogger_1.defaultLabels), labels), { context: context !== null && context !== void 0 ? context : this.context, level: 'info' }), message);
if (LokiLogger_1.logToConsole) {
super.log(message, context);
}
}
warn(message, context, labels) {
LokiLogger_1.sendLokiRequest(Object.assign(Object.assign(Object.assign({}, LokiLogger_1.defaultLabels), labels), { context: this.context, level: 'warn' }), message);
if (LokiLogger_1.logToConsole) {
super.warn(message, context);
}
}
debug(message, context, labels) {
LokiLogger_1.sendLokiRequest(Object.assign(Object.assign(Object.assign({}, LokiLogger_1.defaultLabels), labels), { context: this.context, level: 'debug' }), message);
if (LokiLogger_1.logToConsole) {
super.debug(message, context);
}
}
verbose(message, context, labels) {
LokiLogger_1.sendLokiRequest(Object.assign(Object.assign(Object.assign({}, LokiLogger_1.defaultLabels), labels), { context: this.context, level: 'verbose' }), message);
if (LokiLogger_1.logToConsole) {
super.verbose(message, context);
}
}
};
LokiLogger.lokiUrl = 'localhost:3100';
LokiLogger.defaultLabels = {};
LokiLogger.logToConsole = false;
LokiLogger.gzip = false;
LokiLogger.onLokiError = () => { };
LokiLogger.sendLokiRequest = (labels, message) => {
const data = JSON.stringify({
streams: [
{
stream: labels,
values: [[(Date.now() * 1000000).toString(), message]],
},
],
});
(0, axios_1.default)({
method: 'POST',
url: `${LokiLogger_1.lokiUrl}/loki/api/v1/push`,
headers: LokiLogger_1.gzip
? {
'Content-Type': 'application/json',
'Content-Encoding': 'application/gzip',
}
: {
'Content-Type': 'application/json',
},
data: data,
})
.then()
.catch((error) => {
var _a;
if (LokiLogger_1.onLokiError) {
LokiLogger_1.onLokiError(error);
}
else {
console.error('error', error.message, (_a = error === null || error === void 0 ? void 0 : error.response) === null || _a === void 0 ? void 0 : _a.data);
}
});
};
exports.LokiLogger = LokiLogger = LokiLogger_1 = __decorate([
(0, common_1.Injectable)(),
__param(0, (0, common_1.Optional)()),
__metadata("design:paramtypes", [String])
], LokiLogger);
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