log4js-node / log4js-node/streamroller
Compress may cause Error: EPERM: operation not permitted open 'xxx\xxxx\xxxxx\myfile'. It`s ok with the option of compress is false.
- Dominant language
- JavaScript
- Stars
- 38
- Forks
- 20
- PR merge metrics
- No merged PRs in 30d
Description
This issue is discovered from "log4js-node", The latest version of "log4js-node" has the same issue because of this dependency.
replicate step:
1. Download source code of this project.
2. Create a 'index.js' file in root of this project.
3. Input content in 'index.js' file:
```
var rollers = require('./lib/index');
var stream = new rollers.RollingFileStream('myfile', 10000, 12, {
compress: true,
});
for (let i = 0; i < 30; i++) {
// console.log(i);
stream.write(getContent());
}
stream.end();
function getContent() {
return `
{
a: {a: 1, b: 2, c: 3, d: 4, e: 5, f: 123321, g: 234432432, h: 31321, i: 23232, j: 23432423432432, k: 1123321},
b: {a: 1, b: 2, c: 3, d: 4, e: 5, f: 123321, g: 234432432, h: 31321, i: 23232, j: 23432423432432, k: 1123321},
c: {a: 1, b: 2, c: 3, d: 4, e: 5, f: 123321, g: 234432432, h: 31321, i: 23232, j: 23432423432432, k: 1123321},
......... // 70000 lines repeated
}`
}
```
4. Execute `node index.js` in terminal.
5. Open the hot file "myfile" with notebook or VSCode as you like. This step is very important. The issue will not replicate without this step.
6. Execute `node index.js` in terminal again. If no error occur, you can execute more times. The probability is very high, more than 50%.
Finally get this error in terminal:
Error: EPERM: operation not permitted, open 'D:\nodeProgram\TEST\test-streamroller\streamroller-master\myfile'
at Object.openSync (node:fs:596:3)
at Object.writeFileSync (node:fs:2322:35)
at Object.appendFileSync (node:fs:2384:6)
at RollingFileStream._renewWriteStream (D:\nodeProgram\TEST\test-streamroller\streamroller-master\lib\RollingFileWriteStream.js:312:8)
at RollingFileStream._moveOldFiles (D:\nodeProgram\TEST\test-streamroller\streamroller-master\lib\RollingFileWriteStream.js:232:10)
at async RollingFileStream._shouldRoll (D:\nodeProgram\TEST\test-streamroller\streamroller-master\lib\RollingFileWriteStream.js:170:7) {
errno: -4048,
syscall: 'open',
code: 'EPERM',
path: 'D:\\nodeProgram\\TEST\\test-streamroller\\streamroller-master\\myfile'
}
Contributor guide
No contributing guide indexed for this repository
Research direction
Start in lib/RollingFileWriteStream.js, especially _shouldRoll, _moveOldFiles, and _renewWriteStream around the reported stack trace. Reproduce on Windows with the provided index.js, compress: true, and an open myfile; done means repeated runs no longer raise EPERM while rolling the file.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, node.js
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100