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b8a73cc003
The log level is now configurable, via the `FEEDDECK_LOG_LEVEL` environment variable. The environment variable can have the following values: `debug`, `info`, `warning` or `error`. With this change we also only log the response when getting and parsing the feed fails when the log level is set to `debug`, also when the actual message is still an error. This should reduce the noice in the logs a lot and allows us to specially turn this on while debugging.
102 lines
2.3 KiB
TypeScript
102 lines
2.3 KiB
TypeScript
import { FEEDDECK_LOG_LEVEL } from './constants.ts';
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export const log = (
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level: 'debug' | 'info' | 'warning' | 'error',
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message: string,
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// deno-lint-ignore no-explicit-any
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fields?: Record<string, any>,
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) => {
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/**
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* Check that the provided log level is within the configured log level
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* (FEEDDECK_LOG_LEVEL). If this is the case the log line will be printed to
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* the console, otherwise it will be ignored.
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*/
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switch (FEEDDECK_LOG_LEVEL) {
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case 'info':
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if (level === 'debug') {
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return;
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}
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break;
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case 'warning':
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if (level === 'debug' || level === 'info') {
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return;
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}
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break;
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case 'error':
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if (level === 'error' || level === 'warning' || level === 'info') {
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return;
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}
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break;
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default:
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break;
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}
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const output = JSON.stringify({
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'time': new Date().toUTCString(),
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'level': level,
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'caller': caller(),
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message: message,
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...fields,
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});
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switch (level) {
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case 'debug':
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console.debug(output);
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break;
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case 'info':
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console.info(output);
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break;
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case 'warning':
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console.warn(output);
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break;
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case 'error':
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console.error(output);
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break;
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default:
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console.log(output);
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break;
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}
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};
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/**
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* The caller function is used to get the file name of the parent function, so
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* that we can add it to each log line.
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* See: https://github.com/apiel/caller
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*/
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interface Bind {
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cb?: (file: string) => string;
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}
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const up = 3;
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// deno-lint-ignore no-explicit-any
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function caller(this: Bind | any, levelUp = up) {
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const err = new Error();
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const stack = err.stack?.split('\n')[levelUp];
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if (stack) {
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return getFile.bind(this)(stack);
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}
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}
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// deno-lint-ignore no-explicit-any
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function getFile(this: Bind | any, stack: string) {
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stack = stack.substring(stack.indexOf('at ') + 3);
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if (!stack.startsWith('file://')) {
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stack = stack.substring(stack.lastIndexOf('(') + 1);
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}
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const path = stack.split(':');
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let file;
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if (Deno.build.os == 'windows') {
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file = `${path[0]}:${path[1]}:${path[2]}:${path[3]}`;
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} else {
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file = `${path[0]}:${path[1]}:${path[2]}`;
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}
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if ((this as Bind)?.cb) {
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// deno-lint-ignore no-explicit-any
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const cb = (this as Bind).cb as any;
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file = cb(file);
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}
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return file;
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}
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