[GitHub] [arrow] pitrou commented on a change in pull request #8261: ARROW-10085: [C++] Fix S3 region resolution on Windows

[GitBox <gi...@apache.org>]

pitrou commented on a change in pull request #8261:
URL: https://github.com/apache/arrow/pull/8261#discussion_r494460508



##########
File path: cpp/src/arrow/filesystem/s3fs.cc
##########
@@ -459,6 +459,24 @@ class S3Client : public Aws::S3::S3Client {
   }
 };
 
+// In AWS SDK < 1.8, Aws::Client::ClientConfiguration is a bool.
+// In AWS SDK >= 1.8, it's a Aws::Client::FollowRedirectsPolicy scoped enum.
+static constexpr bool HaveLegacyFollowRedirects =
+    std::is_same<bool,
+                 decltype(Aws::Client::ClientConfiguration().followRedirects)>::value;
+
+template <typename Config = Aws::Client::ClientConfiguration>
+void DisableRedirects(
+    typename std::enable_if<HaveLegacyFollowRedirects, Config*>::type config) {
+  config->followRedirects = false;
+}
+
+template <typename Config = Aws::Client::ClientConfiguration>
+void DisableRedirects(
+    typename std::enable_if<!HaveLegacyFollowRedirects, Config*>::type config) {
+  config->followRedirects = decltype(config->followRedirects)::NEVER;
+}
+

Review comment:
       I couldn't think of anything better. @bkietz
   




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