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Logger.js
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Logger.js
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import { resolve } from 'path'
import { createLogQueue } from 'source/node/data/LogQueue'
import { createDirectory } from 'source/node/file/Directory'
import { createSafeWriteStream } from './SafeWrite'
const createSimpleLogger = ({ queueLengthThreshold, ...extraOption }) => createLogQueue({
outputStream: createSafeWriteStream(extraOption),
queueLengthThreshold
})
const SAVE_INTERVAL = 30 * 1000 // in ms, 30sec
const SPLIT_INTERVAL = 24 * 60 * 60 * 1000 // in ms, 24day
const createLogger = async ({
pathLogDirectory,
getLogFileName = () => `${(new Date().toISOString()).replace(/\W/g, '-')}.log`,
saveInterval = SAVE_INTERVAL,
splitInterval = SPLIT_INTERVAL,
...extraOption
}) => {
let logger
let saveToken
let splitToken
const reset = () => {
end()
const pathOutputFile = resolve(pathLogDirectory, getLogFileName())
logger = createSimpleLogger({ ...extraOption, pathOutputFile })
saveToken = saveInterval && setInterval(save, saveInterval)
splitToken = splitInterval && setTimeout(split, splitInterval)
}
const add = (...args) => {
// __DEV__ && logger && console.log('[Logger] add')
logger && logger.add(args.join(' '))
}
const save = () => {
__DEV__ && logger && console.log('[Logger] save')
logger && logger.save()
}
const split = () => {
__DEV__ && logger && console.log('[Logger] split')
logger && reset()
}
const end = () => {
__DEV__ && logger && console.log('[Logger] end')
logger && logger.end()
saveToken && clearInterval(saveToken)
splitToken && clearTimeout(splitToken)
logger = null
saveToken = null
splitToken = null
}
await createDirectory(pathLogDirectory)
reset()
return { add, save, split, end }
}
export { createSimpleLogger, createLogger }