rdblue commented on code in PR #6169:
URL: https://github.com/apache/iceberg/pull/6169#discussion_r1030807246
##########
aws/src/main/java/org/apache/iceberg/aws/AwsProperties.java:
##########
@@ -1119,6 +1139,54 @@ public <T extends S3ClientBuilder> void
applyS3ServiceConfigurations(T builder)
.build());
}
+ /**
+ * Configure a signer for an S3 client.
+ *
+ * <p>Sample usage:
+ *
+ * <pre>
+ *
S3Client.builder().applyMutation(awsProperties::applyS3SignerConfiguration)
+ * </pre>
+ */
+ public <T extends S3ClientBuilder> void applyS3SignerConfiguration(T
builder) {
+ if (null != s3SignerImpl) {
+ builder.overrideConfiguration(
+ c -> c.putAdvancedOption(SdkAdvancedClientOption.SIGNER,
loadS3SignerDynamically()));
+ }
+ }
+
+ @SuppressWarnings("checkstyle:NestedTryDepth")
+ private Signer loadS3SignerDynamically() {
+ // load the signer implementation dynamically
+ Object signer;
+ try {
+ signer =
+ DynMethods.builder("of")
Review Comment:
I think we should follow the standard conventions for dynamic loading. This
should always call the no-arg constructor and then call `initialize` with the
properties map. If we don't have an interface with the `initialize` method,
then it can be called dynamically as well.
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