message: Add VLOG-ging to gcs_file_system
diff: @@ -697,6 +697,9 @@ Status GcsFileSystem::LoadBufferFromGCS(const string& filename, size_t offset,
  TF_RETURN_WITH_CONTEXT_IF_ERROR(request->Send(), " when reading gs://",
  bucket, "/", object);
  + VLOG(1) << "Successful read of gs://" << bucket << "/" << object << " @ "
  + << offset << " of size: " << out->size();
  +
  if (out->size() < block_size()) {
  // Check stat cache to see if we encountered an interrupted read.
  FileStatistics stat;
  @@ -706,6 +709,8 @@ Status GcsFileSystem::LoadBufferFromGCS(const string& filename, size_t offset,
  "File contents are inconsistent for file: %s @ %lu.",
  filename.c_str(), offset));
  }
  + VLOG(2) << "Successful integrity check for: gs://" << bucket << "/"
  + << object << " @ " << offset;
  }
  }
  @@ -868,6 +873,11 @@ Status GcsFileSystem::StatForObject(const string& fname, const string& bucket,
  TF_RETURN_IF_ERROR(GetStringValue(root, "updated", &updated));
  TF_RETURN_IF_ERROR(ParseRfc3339Time(updated, &(stat->mtime_nsec)));
  + VLOG(1) << "Stat of: gs://" << bucket << "/" << object << " -- "
  + << " length: " << stat->length
  + << "; mtime_nsec: " << stat->mtime_nsec
  + << "; updated: " << updated;
  +
  stat->is_directory = false;
  return Status::OK();
  };
  