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fix(rest): support rewinds in libcurl #11709

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coryan
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@coryan coryan commented May 23, 2023

This fixes problems I introduced in the first PR.

See #11703. Really fixes #11167


This change is Reviewable

This fixes problems I introduced in the first PR.
@coryan coryan marked this pull request as ready for review May 23, 2023 17:28
@coryan coryan requested a review from a team as a code owner May 23, 2023 17:28
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codecov bot commented May 23, 2023

Codecov Report

Patch coverage: 95.52% and project coverage change: +0.01 🎉

Comparison is base (80a8b19) 83.02% compared to head (3abc612) 83.03%.

Additional details and impacted files
@@            Coverage Diff             @@
##             main   #11709      +/-   ##
==========================================
+ Coverage   83.02%   83.03%   +0.01%     
==========================================
  Files        1827     1830       +3     
  Lines      164734   164764      +30     
==========================================
+ Hits       136765   136809      +44     
+ Misses      27969    27955      -14     
Impacted Files Coverage Δ
google/cloud/internal/curl_impl.cc 89.43% <75.00%> (+2.38%) ⬆️
google/cloud/internal/curl_writev.cc 93.33% <93.33%> (ø)
google/cloud/internal/curl_writev.h 100.00% <100.00%> (ø)
google/cloud/internal/curl_writev_test.cc 100.00% <100.00%> (ø)

... and 8 files with indirect coverage changes

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Reviewable status: 0 of 7 files reviewed, 1 unresolved discussion (waiting on @coryan)


google/cloud/internal/curl_writev.h line 57 at r1 (raw file):

    }
    return avail - dst.size();
  }

nit: Should these method implementations be moved to the new .cc file or is there an advantage to leaving them here in the .h?

Code quote:

  explicit WriteVector(std::vector<absl::Span<char const>> v)
      : original_(std::move(v)), writev_(original_.begin(), original_.end()) {}

  std::size_t size() const {
    std::size_t size = 0;
    for (auto const& s : writev_) {
      size += s.size();
    }
    return size;
  }

  std::size_t MoveTo(absl::Span<char> dst) {
    auto const avail = dst.size();
    while (!writev_.empty()) {
      auto& src = writev_.front();
      if (src.size() > dst.size()) {
        std::copy(src.begin(), src.begin() + dst.size(), dst.begin());
        src.remove_prefix(dst.size());
        dst.remove_prefix(dst.size());
        break;
      }
      std::copy(src.begin(), src.end(), dst.begin());
      dst.remove_prefix(src.size());
      writev_.pop_front();
    }
    return avail - dst.size();
  }

GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_BEGIN

bool WriteVector::Seek(std::size_t offset, int origin) {
// libcurl claims to only req
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Incomplete comment?

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Fixed

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@coryan coryan left a comment

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Reviewable status: 0 of 7 files reviewed, 1 unresolved discussion (waiting on @devbww and @scotthart)


google/cloud/internal/curl_writev.h line 57 at r1 (raw file):

Previously, scotthart (Scott Hart) wrote…

nit: Should these method implementations be moved to the new .cc file or is there an advantage to leaving them here in the .h?

Done.

@coryan coryan enabled auto-merge (squash) May 23, 2023 20:02
@coryan coryan merged commit 5e88b3f into googleapis:main May 23, 2023
@coryan coryan deleted the fix-rest-support-rewinds-in-libcurl-take2 branch May 23, 2023 20:50
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storage: Send failed since rewinding of the data stream failed
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