[GitHub] [iceberg] danielcweeks commented on a change in pull request #2002: AWS: add client factory for assume role use case

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

danielcweeks commented on a change in pull request #2002:
URL: https://github.com/apache/iceberg/pull/2002#discussion_r552236729



##########
File path: aws/src/main/java/org/apache/iceberg/aws/AssumeRoleAwsClientFactory.java
##########
@@ -0,0 +1,98 @@
+/*
+ * 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.
+ */
+
+package org.apache.iceberg.aws;
+
+import java.util.Map;
+import java.util.UUID;
+import org.apache.iceberg.relocated.com.google.common.base.Preconditions;
+import org.apache.iceberg.util.PropertyUtil;
+import software.amazon.awssdk.awscore.client.builder.AwsClientBuilder;
+import software.amazon.awssdk.awscore.client.builder.AwsSyncClientBuilder;
+import software.amazon.awssdk.http.SdkHttpClient;
+import software.amazon.awssdk.http.urlconnection.UrlConnectionHttpClient;
+import software.amazon.awssdk.regions.Region;
+import software.amazon.awssdk.services.glue.GlueClient;
+import software.amazon.awssdk.services.kms.KmsClient;
+import software.amazon.awssdk.services.s3.S3Client;
+import software.amazon.awssdk.services.sts.StsClient;
+import software.amazon.awssdk.services.sts.auth.StsAssumeRoleCredentialsProvider;
+import software.amazon.awssdk.services.sts.model.AssumeRoleRequest;
+
+public class AssumeRoleAwsClientFactory implements AwsClientFactory {
+
+  private static final SdkHttpClient HTTP_CLIENT_DEFAULT = UrlConnectionHttpClient.create();
+
+  private String roleArn;
+  private String externalId;
+  private int timeout;
+  private String region;
+
+  @Override
+  public S3Client s3() {
+    return S3Client.builder().applyMutation(this::configure).build();
+  }
+
+  @Override
+  public GlueClient glue() {
+    return GlueClient.builder().applyMutation(this::configure).build();
+  }
+
+  @Override
+  public KmsClient kms() {
+    return KmsClient.builder().applyMutation(this::configure).build();
+  }
+
+  @Override
+  public void initialize(Map<String, String> properties) {
+    roleArn = properties.get(AwsProperties.CLIENT_ASSUME_ROLE_ARN);
+    Preconditions.checkNotNull(roleArn,
+        "Cannot initialize AssumeRoleClientConfigFactory with null role ARN");
+    timeout = PropertyUtil.propertyAsInt(properties,
+        AwsProperties.CLIENT_ASSUME_ROLE_TIMEOUT_SEC, AwsProperties.CLIENT_ASSUME_ROLE_TIMEOUT_SEC_DEFAULT);
+    externalId = properties.get(AwsProperties.CLIENT_ASSUME_ROLE_EXTERNAL_ID);
+
+    region = properties.get(AwsProperties.CLIENT_ASSUME_ROLE_REGION);
+    Preconditions.checkNotNull(region, "Cannot initialize AssumeRoleClientConfigFactory with null region");
+  }
+
+  private <T extends AwsClientBuilder & AwsSyncClientBuilder> T configure(T clientBuilder) {
+    AssumeRoleRequest request = AssumeRoleRequest.builder()
+        .roleArn(roleArn)
+        .roleSessionName(genSessionName())
+        .durationSeconds(timeout)
+        .externalId(externalId)
+        .build();
+
+    clientBuilder.credentialsProvider(
+        StsAssumeRoleCredentialsProvider.builder()
+            .stsClient(StsClient.builder().httpClient(HTTP_CLIENT_DEFAULT).build())

Review comment:
       I wouldn't worry about it then.  We have a rather complicated account setup and I'm not sure I know well enough what is producing the issue internally for us.




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