CTTY commented on code in PR #2660:
URL: https://github.com/apache/iceberg-rust/pull/2660#discussion_r3540157254
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crates/catalog/rest/src/catalog.rs:
##########
@@ -145,6 +159,12 @@ impl RestCatalogBuilder {
self.config.client = Some(client);
self
}
+
+ /// Injects a custom request signer, overriding the `rest.sigv4-*`
configuration.
+ pub fn with_signer(mut self, signer: Arc<dyn HttpRequestSigner>) -> Self {
Review Comment:
I think we need a more general design rather than just a signer. some
authentication mechanism is token-based.
##########
crates/catalog/rest/src/signing.rs:
##########
@@ -0,0 +1,448 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+use chrono::{DateTime, Utc};
+use iceberg::{Error, ErrorKind, Result};
+use reqsign_core::hash::{base64_encode, hex_hmac_sha256, hex_sha256,
hmac_sha256};
+use sha2::{Digest, Sha256};
+
+/// Hex SHA-256 of the empty string.
+const EMPTY_BODY_HEX_SHA256: &str =
+ "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855";
+
+/// How the payload hash is encoded in the `x-amz-content-sha256` header.
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum PayloadHashMode {
+ /// Iceberg Java's RESTSigV4 style: base64 header for non-empty bodies, hex
+ /// for empty; the canonical request always uses hex.
+ IcebergRest,
+ /// Standard AWS SigV4 style: hex everywhere (e.g. AWS Glue).
+ StandardAws,
+}
Review Comment:
I didn't know this detail until this PR. Thanks for capturing this!
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