Use showFileAtRefBase64 to read per-commit file contents #3744
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Thanks @gustavderdrache (note: a colleague of mine) for the code review and fixups! |
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| const stdout: string[] = [] | ||
| const stderr: string[] = [] | ||
| const stdout: Buffer[] = [] | ||
| let stdoutLength = 0 | ||
| const stderr: Buffer[] = [] | ||
| let stderrLength = 0 | ||
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| const options = { | ||
| cwd: this.workingDirectory, | ||
| env, | ||
| ignoreReturnCode: allowAllExitCodes, | ||
| listeners: { | ||
| stdout: (data: Buffer) => { | ||
| stdout.push(data.toString()) | ||
| stdout.push(data) | ||
| stdoutLength += data.length | ||
| }, | ||
| stderr: (data: Buffer) => { | ||
| stderr.push(data.toString()) | ||
| stderr.push(data) | ||
| stderrLength += data.length | ||
| } | ||
| } | ||
| } | ||
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| result.exitCode = await exec.exec(`"${this.gitPath}"`, args, options) | ||
| result.stdout = stdout.join('') | ||
| result.stderr = stderr.join('') | ||
| result.stdout = Buffer.concat(stdout, stdoutLength).toString(encoding) | ||
| result.stderr = Buffer.concat(stderr, stderrLength).toString(encoding) |
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Note these changes are necessary to avoid accidentally incorrectly handling split chunks. In utf-8 this is a problem if the chunk is in the middle of a code point, corrupting the data. In base64 this is a problem because it can end up with padding in the middle of the stream, which effectively truncates the file early.
Reading it all into a single buffer and then converting retains the correct behavior, without letting the executing child process block on a full output stream.
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@grahamc @gustavderdrache Thank you both for your effort to fix this! ❤️ The fix looks good to me. Not super happy about having to call git commands in the I have a test suite that includes a large file and 1000 small files, so let's see what the performance is like. |
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/test repository=DeterminateSystems/create-pull-request ref=showFileAtRef sign-commits=true |
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/test repository=DeterminateSystems/create-pull-request ref=showFileAtRef sign-commits=true perf=true |
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If you can, it would be helpful if you could you run |
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All set, thank you @peter-evans! |
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Thank you again, @peter-evans! |
Closes #3743