js-logging/src/api-log-appender.ts

84 lines
2.0 KiB
TypeScript

import Axios from 'axios';
import { LogMessage, LogLevel } from './log-message';
import LogAppender from './log-appender';
interface ApiMessage {
level: string;
message: string;
scope: string;
stacktrace: string;
timestamp: string;
}
export class ApiLogAppender implements LogAppender {
public batchSize = 10;
public minimumTimePassedInSec = 60;
public maximumTimePassedInSec = 120;
public threshold = LogLevel.ALL;
private http = Axios.create();
private msgBuffer: ApiMessage[] = [];
private lastSent = 0;
constructor(
public readonly apiEndpoint: string,
public authToken?: string,
threshold?: LogLevel
) {
setTimeout(this.checkPost, 1000);
if (threshold) {
this.threshold = threshold;
}
}
public appendMessage(msg: LogMessage): void {
if (this.threshold && msg.level < this.threshold) {
return;
}
this.msgBuffer.push({
level: LogLevel[msg.level],
message:
typeof msg.message === 'string'
? msg.message
: JSON.stringify(msg.message),
scope: msg.scope,
stacktrace: msg.stacktrace,
timestamp: msg.timestamp.toISOString()
});
}
private doPost() {
if (this.msgBuffer.length > 0 && this.authToken) {
this.http.post(this.apiEndpoint, this.msgBuffer, {
headers: {
'Content-Type': 'application/json',
Authorization: `Bearer ${this.authToken}`
}
});
this.lastSent = Date.now();
this.msgBuffer = [];
}
}
private checkPost = () => {
const now = Date.now();
const min = this.lastSent + this.minimumTimePassedInSec * 1000;
const max = this.lastSent + this.maximumTimePassedInSec * 1000;
if (
(this.msgBuffer.length >= this.batchSize && min < now) ||
(this.msgBuffer.length > 0 && max < now)
) {
this.doPost();
}
setTimeout(
this.checkPost,
Math.max(10000, this.minimumTimePassedInSec * 1000)
);
};
}
export default ApiLogAppender;