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logger.ts
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logger.ts
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import { WinstonModule } from 'nest-winston';
import winston from 'winston';
import { TransformableInfo } from 'logform';
import c from 'config';
import { LoggerConfig } from './config/logger.config';
import { ElasticsearchTransport } from 'winston-elasticsearch';
import * as TransportStream from 'winston-transport';
const config = c.get<LoggerConfig>('logger');
const instanceName = c.get<string>('global.instanceName');
const transports: TransportStream[] = [
new winston.transports.Console({
format: winston.format.combine(
winston.format.timestamp(),
process.stdout.isTTY
? winston.format.colorize()
: winston.format.uncolorize(),
winston.format.printf((info: TransformableInfo) => {
return `${new Date(info.timestamp).toLocaleString()} - ${
info.level
} - ${info.context}: ${info.message}`;
})
),
}),
];
if (config.elasticsearch.enabled) {
transports.push(
new ElasticsearchTransport({
indexPrefix: config.elasticsearch.indexPrefix,
clientOpts: {
node: config.elasticsearch.node,
auth: config.elasticsearch.auth,
},
})
);
}
export const WINSTON_LOGGER = WinstonModule.createLogger({
level: process.env.NODE_LOG_LEVEL || 'info',
defaultMeta: {
instanceName,
},
transports,
});