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fix(worker): disable SDK checksum trailer for R2 uploads

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AWS SDK Go v2 s3 v1.100.0 defaults to RequestChecksumCalculationWhenSupported,
which causes PutObject to send STREAMING-UNSIGNED-PAYLOAD-TRAILER — a chunked
transfer mode R2 doesn't support. Setting WhenRequired makes the SDK send a
standard signed payload instead, resolving the 403 SignatureDoesNotMatch.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
jedarden 2026-04-30 10:35:00 -04:00
parent dc0caf0115
commit 341591a10b
1 changed files with 5 additions and 0 deletions
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5
cmd/acb-worker/b2.go
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@ -36,6 +36,11 @@ func NewR2Client(cfg *Config) *B2Client {
client := s3.NewFromConfig(awsCfg, func(o *s3.Options) {
o.BaseEndpoint = aws.String(cfg.R2Endpoint)
o.UsePathStyle = true
// R2 rejects STREAMING-UNSIGNED-PAYLOAD-TRAILER (SDK default for PutObject).
// WhenRequired disables automatic checksum calculation so the SDK sends a
// standard signed payload instead.
o.RequestChecksumCalculation = aws.RequestChecksumCalculationWhenRequired
o.ResponseChecksumValidation = aws.ResponseChecksumValidationWhenRequired
})
return &B2Client{