Refactor CredentialsController, add RemoteConnection plugin

This PR moves to a more dynamic approach to resolving remote credentials, where the whole Request object can be used to determine the endpoint it should be proxied to, the remote credentials to use and STS mechanism.

RemoteS3ConnectionProvider returns remote credentials, optional STS role and optional RemoteS3Facade configs (used to provide and endpoint but also change the path-style if needed). It takes as arguments the ParsedRequest, Identity and SigningMetadata.

The request flow with this change goes:

Client request to aws-proxy -> CredentialsProvider to get emulated secret key and Identity -> SecurityFacade -> S3RequestRewriter -> RemoteS3ConnectionProvider to get remote credentials, role and remote configs -> (Optional) Assume Remote Role -> Sing request to remote -> Send request to remote

Author: mosiac1

trino-aws-proxy-glue/src/main/java/io/trino/aws/proxy/glue/rest/TrinoGlueResource.java

@@ -59,7 +59,7 @@ public TrinoGlueResource(ObjectMapper objectMapper, GlueRequestHandler requestHa
     @Produces(MediaType.APPLICATION_JSON)
     public Response gluePost(@Context Request request, @Context SigningMetadata signingMetadata, @Context RequestLoggingSession requestLoggingSession)
     {
-        requestLoggingSession.logProperty("request.glue.emulated.key", signingMetadata.credentials().emulated().secretKey());
+        requestLoggingSession.logProperty("request.glue.emulated.key", signingMetadata.credential().secretKey());
 
         String target = request.requestHeaders().unmodifiedHeaders().getFirst("x-amz-target")
                 .orElseThrow(() -> InvalidInputException.builder().statusCode(BAD_REQUEST.getStatusCode()).build());

trino-aws-proxy-glue/src/test/java/io/trino/aws/proxy/glue/TestGlueBase.java

@@ -13,7 +13,7 @@
  */
 package io.trino.aws.proxy.glue;
 
-import io.trino.aws.proxy.spi.credentials.Credentials;
+import io.trino.aws.proxy.spi.credentials.IdentityCredential;
 import jakarta.annotation.PreDestroy;
 import jakarta.ws.rs.core.UriBuilder;
 import org.junit.jupiter.api.Test;
@@ -72,7 +72,7 @@ public abstract class TestGlueBase<T extends TestingGlueContext>
     protected final GlueClient glueClient;
     protected final T context;
 
-    protected TestGlueBase(TrinoGlueConfig config, Credentials testingCredentials, T context)
+    protected TestGlueBase(TrinoGlueConfig config, IdentityCredential testingCredentials, T context)
     {
         this.context = requireNonNull(context, "context is null");
 

trino-aws-proxy-glue/src/test/java/io/trino/aws/proxy/glue/TestGlueInS3Proxy.java

@@ -19,7 +19,7 @@
 import io.trino.aws.proxy.server.testing.TestingUtil.ForTesting;
 import io.trino.aws.proxy.server.testing.harness.BuilderFilter;
 import io.trino.aws.proxy.server.testing.harness.TrinoAwsProxyTest;
-import io.trino.aws.proxy.spi.credentials.Credentials;
+import io.trino.aws.proxy.spi.credentials.IdentityCredential;
 
 import java.net.URI;
 
@@ -51,7 +51,7 @@ public record Context(URI baseUrl)
     }
 
     @Inject
-    public TestGlueInS3Proxy(TestingHttpServer httpServer, TrinoGlueConfig config, @ForTesting Credentials testingCredentials)
+    public TestGlueInS3Proxy(TestingHttpServer httpServer, TrinoGlueConfig config, @ForTesting IdentityCredential testingCredentials)
     {
         super(config, testingCredentials, new Context(httpServer.getBaseUrl()));
     }

trino-aws-proxy-glue/src/test/java/io/trino/aws/proxy/glue/TestingCredentialsProvider.java

@@ -14,19 +14,19 @@
 package io.trino.aws.proxy.glue;
 
 import io.trino.aws.proxy.spi.credentials.Credential;
-import io.trino.aws.proxy.spi.credentials.Credentials;
 import io.trino.aws.proxy.spi.credentials.CredentialsProvider;
+import io.trino.aws.proxy.spi.credentials.IdentityCredential;
 
 import java.util.Optional;
 import java.util.UUID;
 
 public class TestingCredentialsProvider
         implements CredentialsProvider
 {
-    public static final Credentials CREDENTIALS = Credentials.build(new Credential(UUID.randomUUID().toString(), UUID.randomUUID().toString()));
+    public static final IdentityCredential CREDENTIALS = new IdentityCredential(new Credential(UUID.randomUUID().toString(), UUID.randomUUID().toString()));
 
     @Override
-    public Optional<Credentials> credentials(String emulatedAccessKey, Optional<String> session)
+    public Optional<IdentityCredential> credentials(String emulatedAccessKey, Optional<String> session)
     {
         return Optional.of(CREDENTIALS);
     }

trino-aws-proxy-spi/src/main/java/io/trino/aws/proxy/spi/credentials/Credentials.java

@@ -15,6 +15,7 @@
 
 import java.util.Optional;
 
+// TODO: Add back file-based provider
 public interface CredentialsProvider
 {
     CredentialsProvider NOOP = (_, _) -> Optional.empty();
@@ -24,5 +25,5 @@ public interface CredentialsProvider
      * Your implementation should have a centralized credentials mechanism, likely
      * some type of database along with a way of registering credentials, etc.
      */
-    Optional<Credentials> credentials(String emulatedAccessKey, Optional<String> session);
+    Optional<IdentityCredential> credentials(String emulatedAccessKey, Optional<String> session);
 }

trino-aws-proxy-spi/src/main/java/io/trino/aws/proxy/spi/credentials/CredentialsProvider.java

@@ -0,0 +1,37 @@
+/*
+ * Licensed 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 io.trino.aws.proxy.spi.credentials;
+
+import java.util.Optional;
+
+import static java.util.Objects.requireNonNull;
+
+public record IdentityCredential(Credential emulated, Optional<Identity> identity)
+{
+    public IdentityCredential
+    {
+        requireNonNull(emulated, "emulated is null");
+        requireNonNull(identity, "identity is null");
+    }
+
+    public IdentityCredential(Credential emulatedCredential, Identity identity)
+    {
+        this(emulatedCredential, Optional.of(identity));
+    }
+
+    public IdentityCredential(Credential emulatedCredential)
+    {
+        this(emulatedCredential, Optional.empty());
+    }
+}

trino-aws-proxy-spi/src/main/java/io/trino/aws/proxy/spi/credentials/IdentityCredential.java

@@ -25,8 +25,10 @@
 import io.trino.aws.proxy.spi.plugin.config.CredentialsProviderConfig;
 import io.trino.aws.proxy.spi.plugin.config.PluginIdentifierConfig;
 import io.trino.aws.proxy.spi.plugin.config.RemoteS3Config;
+import io.trino.aws.proxy.spi.plugin.config.RemoteS3ConnectionProviderConfig;
 import io.trino.aws.proxy.spi.plugin.config.S3RequestRewriterConfig;
 import io.trino.aws.proxy.spi.plugin.config.S3SecurityFacadeProviderConfig;
+import io.trino.aws.proxy.spi.remote.RemoteS3ConnectionProvider;
 import io.trino.aws.proxy.spi.remote.RemoteS3Facade;
 import io.trino.aws.proxy.spi.rest.S3RequestRewriter;
 import io.trino.aws.proxy.spi.security.S3SecurityFacadeProvider;
@@ -49,6 +51,11 @@ static Module assumedRoleProviderModule(String identifier, Class<? extends Assum
         return optionalPluginModule(AssumedRoleProviderConfig.class, identifier, AssumedRoleProvider.class, implementationClass, module);
     }
 
+    static Module remoteS3ConnectionProviderModule(String identifier, Class<? extends RemoteS3ConnectionProvider> implementationClass, Module module)
+    {
+        return optionalPluginModule(RemoteS3ConnectionProviderConfig.class, identifier, RemoteS3ConnectionProvider.class, implementationClass, module);
+    }
+
     static Module s3SecurityFacadeProviderModule(String identifier, Class<? extends S3SecurityFacadeProvider> implementationClass, Module module)
     {
         return optionalPluginModule(S3SecurityFacadeProviderConfig.class, identifier, S3SecurityFacadeProvider.class, implementationClass, module);

trino-aws-proxy-spi/src/main/java/io/trino/aws/proxy/spi/plugin/TrinoAwsProxyServerBinding.java

@@ -0,0 +1,38 @@
+/*
+ * Licensed 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 io.trino.aws.proxy.spi.plugin.config;
+
+import io.airlift.configuration.Config;
+import jakarta.validation.constraints.NotNull;
+
+import java.util.Optional;
+
+public class RemoteS3ConnectionProviderConfig
+        implements PluginIdentifierConfig
+{
+    private Optional<String> identifier = Optional.empty();
+
+    @NotNull
+    @Override
+    public Optional<String> getPluginIdentifier()
+    {
+        return identifier;
+    }
+
+    @Config("remote-s3-connection-provider.type")
+    public void setPluginIdentifier(String identifier)
+    {
+        this.identifier = Optional.ofNullable(identifier);
+    }
+}

trino-aws-proxy-spi/src/main/java/io/trino/aws/proxy/spi/plugin/config/RemoteS3ConnectionProviderConfig.java

@@ -0,0 +1,35 @@
+/*
+ * Licensed 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 io.trino.aws.proxy.spi.remote;
+
+import com.google.common.collect.ImmutableMap;
+import io.trino.aws.proxy.spi.credentials.Credential;
+
+import java.util.Map;
+import java.util.Optional;
+
+import static java.util.Objects.requireNonNull;
+
+public record RemoteS3Connection(
+        Credential remoteCredential,
+        Optional<RemoteSessionRole> remoteSessionRole,
+        Optional<Map<String, String>> remoteS3FacadeConfiguration)
+{
+    public RemoteS3Connection
+    {
+        requireNonNull(remoteCredential, "remoteCredential is null");
+        requireNonNull(remoteSessionRole, "remoteSessionRole is null");
+        remoteS3FacadeConfiguration = remoteS3FacadeConfiguration.map(ImmutableMap::copyOf);
+    }
+}