Implement PolicyCatalog Stage 1: CRUD + ListPolicies

api/polaris-catalog-service/build.gradle.kts

@@ -36,7 +36,6 @@ val policyManagementModels =
     "CatalogIdentifier",
     "CreatePolicyRequest",
     "LoadPolicyResponse",
-    "PolicyIdentifier",
     "Policy",
     "PolicyAttachmentTarget",
     "AttachPolicyRequest",
@@ -59,6 +58,7 @@ dependencies {
   implementation(libs.jakarta.inject.api)
   implementation(libs.jakarta.validation.api)
   implementation(libs.swagger.annotations)
+  implementation(libs.guava)
 
   implementation(libs.jakarta.servlet.api)
   implementation(libs.jakarta.ws.rs.api)
@@ -103,6 +103,9 @@ openApiGenerate {
       "ErrorModel" to "org.apache.iceberg.rest.responses.ErrorResponse",
       "IcebergErrorResponse" to "org.apache.iceberg.rest.responses.ErrorResponse",
       "TableIdentifier" to "org.apache.iceberg.catalog.TableIdentifier",
+
+      // Custom types defined below
+      "PolicyIdentifier" to "org.apache.polaris.service.types.PolicyIdentifier",
     )
 }
 

api/polaris-catalog-service/src/main/java/org/apache/polaris/service/types/PolicyIdentifier.java

@@ -0,0 +1,140 @@
+/*
+ * 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.polaris.service.types;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import io.swagger.annotations.ApiModelProperty;
+import java.util.Objects;
+import org.apache.iceberg.catalog.Namespace;
+
+/**
+ * Represents a modified version of the PolicyIdentifier that is different from the one generated by
+ * the OpenAPI generator
+ *
+ * <p>the open api generation inlines the namespace definition, generates a {@code List<String>}
+ * directly, instead of generating a Namespace class. This version uses {@link
+ * org.apache.iceberg.catalog.Namespace} for namespace field.
+ *
+ * <p>TODO: make code generation use {@link org.apache.iceberg.catalog.Namespace} directly
+ */
+public class PolicyIdentifier {
+
+  private final Namespace namespace;
+  private final String name;
+
+  /** Reference to one or more levels of a namespace */
+  @ApiModelProperty(
+      example = "[\"accounting\",\"tax\"]",
+      required = true,
+      value = "Reference to one or more levels of a namespace")
+  @JsonProperty(value = "namespace", required = true)
+  public Namespace getNamespace() {
+    return namespace;
+  }
+
+  /** */
+  @ApiModelProperty(required = true, value = "")
+  @JsonProperty(value = "name", required = true)
+  public String getName() {
+    return name;
+  }
+
+  @JsonCreator
+  public PolicyIdentifier(
+      @JsonProperty(value = "namespace", required = true) Namespace namespace,
+      @JsonProperty(value = "name", required = true) String name) {
+    this.namespace = Objects.requireNonNullElse(namespace, Namespace.empty());
+    this.name = name;
+  }
+
+  public static Builder builder() {
+    return new Builder();
+  }
+
+  public static Builder builder(Namespace namespace, String name) {
+    return new Builder(namespace, name);
+  }
+
+  public static final class Builder {
+    private Namespace namespace;
+    private String name;
+
+    private Builder() {}
+
+    private Builder(Namespace namespace, String name) {
+      this.namespace = Objects.requireNonNullElse(namespace, Namespace.empty());
+      this.name = name;
+    }
+
+    public Builder setNamespace(Namespace namespace) {
+      this.namespace = namespace;
+      return this;
+    }
+
+    public Builder setName(String name) {
+      this.name = name;
+      return this;
+    }
+
+    public PolicyIdentifier build() {
+      PolicyIdentifier inst = new PolicyIdentifier(namespace, name);
+      return inst;
+    }
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    PolicyIdentifier policyIdentifier = (PolicyIdentifier) o;
+    return Objects.equals(this.namespace, policyIdentifier.namespace)
+        && Objects.equals(this.name, policyIdentifier.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(namespace, name);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class PolicyIdentifier {\n");
+
+    sb.append("    namespace: ").append(toIndentedString(namespace)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}

polaris-core/src/main/java/org/apache/polaris/core/catalog/PolarisCatalogHelpers.java

@@ -36,10 +36,14 @@ public class PolarisCatalogHelpers {
   private PolarisCatalogHelpers() {}
 
   public static List<String> tableIdentifierToList(TableIdentifier identifier) {
+    return identifierToList(identifier.namespace(), identifier.name());
+  }
+
+  public static List<String> identifierToList(Namespace namespace, String name) {
     ImmutableList.Builder<String> fullList =
-        ImmutableList.builderWithExpectedSize(identifier.namespace().length() + 1);
-    fullList.addAll(Arrays.asList(identifier.namespace().levels()));
-    fullList.add(identifier.name());
+        ImmutableList.builderWithExpectedSize(namespace.length() + 1);
+    fullList.addAll(Arrays.asList(namespace.levels()));
+    fullList.add(name);
     return fullList.build();
   }
 

polaris-core/src/main/java/org/apache/polaris/core/policy/exceptions/NoSuchPolicyException.java

@@ -0,0 +1,32 @@
+/*
+ * 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.polaris.core.policy.exceptions;
+
+import org.apache.polaris.core.exceptions.PolarisException;
+
+public class NoSuchPolicyException extends PolarisException {
+
+  public NoSuchPolicyException(String message) {
+    super(message);
+  }
+
+  public NoSuchPolicyException(String message, Throwable cause) {
+    super(message, cause);
+  }
+}

polaris-core/src/main/java/org/apache/polaris/core/policy/exceptions/PolicyVersionMismatchException.java

@@ -0,0 +1,31 @@
+/*
+ * 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.polaris.core.policy.exceptions;
+
+import org.apache.polaris.core.exceptions.PolarisException;
+
+public class PolicyVersionMismatchException extends PolarisException {
+  public PolicyVersionMismatchException(String message) {
+    super(message);
+  }
+
+  public PolicyVersionMismatchException(String message, Throwable cause) {
+    super(message, cause);
+  }
+}