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windows: only fall back to move-remove when absolutely necessary
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| const { | ||
| promises: { chmod }, | ||
| chmodSync, | ||
| } = require('./fs.js') | ||
|
|
||
| const fixEPERM = fn => async path => { | ||
| try { | ||
| return await fn(path) | ||
| } catch (er) { | ||
| if (er.code === 'ENOENT') { | ||
| return | ||
| } | ||
| if (er.code === 'EPERM') { | ||
| try { | ||
| await chmod(path, 0o666) | ||
| } catch (er2) { | ||
| if (er2.code === 'ENOENT') { | ||
| return | ||
| } | ||
| throw er | ||
| } | ||
| return await fn(path) | ||
| } | ||
| throw er | ||
| } | ||
| } | ||
|
|
||
| const fixEPERMSync = fn => path => { | ||
| try { | ||
| return fn(path) | ||
| } catch (er) { | ||
| if (er.code === 'ENOENT') { | ||
| return | ||
| } | ||
| if (er.code === 'EPERM') { | ||
| try { | ||
| chmodSync(path, 0o666) | ||
| } catch (er2) { | ||
| if (er2.code === 'ENOENT') { | ||
| return | ||
| } | ||
| throw er | ||
| } | ||
| return fn(path) | ||
| } | ||
| throw er | ||
| } | ||
| } | ||
|
|
||
| module.exports = { | ||
| fixEPERM, | ||
| fixEPERMSync, | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| const MAXBACKOFF = 100 | ||
| const RATE = 1.2 | ||
| const MAXRETRIES = 10 | ||
|
|
||
| const codes = new Set(['EMFILE', 'ENFILE', 'EBUSY']) | ||
| const retryBusy = fn => { | ||
| const method = async (path, opt, backoff = 1) => { | ||
| const mbo = opt.maxBackoff || MAXBACKOFF | ||
| const rate = Math.max(opt.backoff || RATE, RATE) | ||
| const max = opt.retries || MAXRETRIES | ||
| let retries = 0 | ||
| while (true) { | ||
| try { | ||
| return await fn(path) | ||
| } catch (er) { | ||
| if (codes.has(er.code)) { | ||
| backoff = Math.ceil(backoff * rate) | ||
| if (backoff < mbo) { | ||
| return new Promise((res, rej) => { | ||
| setTimeout(() => { | ||
| method(path, opt, backoff).then(res, rej) | ||
| }, backoff) | ||
| }) | ||
| } | ||
| if (retries < max) { | ||
| retries++ | ||
| continue | ||
| } | ||
| } | ||
| throw er | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return method | ||
| } | ||
|
|
||
| // just retries, no async so no backoff | ||
| const retryBusySync = fn => { | ||
| const method = (path, opt) => { | ||
| const max = opt.retries || MAXRETRIES | ||
| let retries = 0 | ||
| while (true) { | ||
| try { | ||
| return fn(path) | ||
| } catch (er) { | ||
| if (codes.has(er.code) && retries < max) { | ||
| retries++ | ||
| continue | ||
| } | ||
| throw er | ||
| } | ||
| } | ||
| } | ||
| return method | ||
| } | ||
|
|
||
| module.exports = { | ||
| retryBusy, | ||
| retryBusySync, | ||
| } |
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