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/*
* 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.kafka.common.requests;
import org.apache.kafka.common.acl.AccessControlEntry;
import org.apache.kafka.common.acl.AclBinding;
import org.apache.kafka.common.resource.ResourcePattern;
import org.apache.kafka.common.errors.UnsupportedVersionException;
import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.protocol.types.ArrayOf;
import org.apache.kafka.common.protocol.types.Field;
import org.apache.kafka.common.protocol.types.Schema;
import org.apache.kafka.common.protocol.types.Struct;
import org.apache.kafka.common.resource.PatternType;
import org.apache.kafka.common.utils.Utils;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
import static org.apache.kafka.common.protocol.CommonFields.HOST;
import static org.apache.kafka.common.protocol.CommonFields.OPERATION;
import static org.apache.kafka.common.protocol.CommonFields.PERMISSION_TYPE;
import static org.apache.kafka.common.protocol.CommonFields.PRINCIPAL;
import static org.apache.kafka.common.protocol.CommonFields.RESOURCE_NAME;
import static org.apache.kafka.common.protocol.CommonFields.RESOURCE_PATTERN_TYPE;
import static org.apache.kafka.common.protocol.CommonFields.RESOURCE_TYPE;
public class CreateAclsRequest extends AbstractRequest {
private final static String CREATIONS_KEY_NAME = "creations";
private static final Schema CREATE_ACLS_REQUEST_V0 = new Schema(
new Field(CREATIONS_KEY_NAME, new ArrayOf(new Schema(
RESOURCE_TYPE,
RESOURCE_NAME,
PRINCIPAL,
HOST,
OPERATION,
PERMISSION_TYPE))));
/**
* Version 1 adds RESOURCE_PATTERN_TYPE, to support more than just literal resource patterns.
* For more info, see {@link PatternType}.
*
* Also, when the quota is violated, brokers will respond to a version 1 or later request before throttling.
*/
private static final Schema CREATE_ACLS_REQUEST_V1 = new Schema(
new Field(CREATIONS_KEY_NAME, new ArrayOf(new Schema(
RESOURCE_TYPE,
RESOURCE_NAME,
RESOURCE_PATTERN_TYPE,
PRINCIPAL,
HOST,
OPERATION,
PERMISSION_TYPE))));
public static Schema[] schemaVersions() {
return new Schema[]{CREATE_ACLS_REQUEST_V0, CREATE_ACLS_REQUEST_V1};
}
public static class AclCreation {
private final AclBinding acl;
public AclCreation(AclBinding acl) {
this.acl = acl;
}
static AclCreation fromStruct(Struct struct) {
ResourcePattern pattern = RequestUtils.resourcePatternromStructFields(struct);
AccessControlEntry entry = RequestUtils.aceFromStructFields(struct);
return new AclCreation(new AclBinding(pattern, entry));
}
public AclBinding acl() {
return acl;
}
void setStructFields(Struct struct) {
RequestUtils.resourcePatternSetStructFields(acl.pattern(), struct);
RequestUtils.aceSetStructFields(acl.entry(), struct);
}
@Override
public String toString() {
return "(acl=" + acl + ")";
}
}
public static class Builder extends AbstractRequest.Builder {
private final List creations;
public Builder(List creations) {
super(ApiKeys.CREATE_ACLS);
this.creations = creations;
}
@Override
public CreateAclsRequest build(short version) {
return new CreateAclsRequest(version, creations);
}
@Override
public String toString() {
return "(type=CreateAclsRequest, creations=" + Utils.join(creations, ", ") + ")";
}
}
private final List aclCreations;
CreateAclsRequest(short version, List aclCreations) {
super(ApiKeys.CREATE_ACLS, version);
this.aclCreations = aclCreations;
validate(aclCreations);
}
public CreateAclsRequest(Struct struct, short version) {
super(ApiKeys.CREATE_ACLS, version);
this.aclCreations = new ArrayList<>();
for (Object creationStructObj : struct.getArray(CREATIONS_KEY_NAME)) {
Struct creationStruct = (Struct) creationStructObj;
aclCreations.add(AclCreation.fromStruct(creationStruct));
}
}
@Override
protected Struct toStruct() {
Struct struct = new Struct(ApiKeys.CREATE_ACLS.requestSchema(version()));
List requests = new ArrayList<>();
for (AclCreation creation : aclCreations) {
Struct creationStruct = struct.instance(CREATIONS_KEY_NAME);
creation.setStructFields(creationStruct);
requests.add(creationStruct);
}
struct.set(CREATIONS_KEY_NAME, requests.toArray());
return struct;
}
public List aclCreations() {
return aclCreations;
}
@Override
public AbstractResponse getErrorResponse(int throttleTimeMs, Throwable throwable) {
short versionId = version();
switch (versionId) {
case 0:
case 1:
List responses = new ArrayList<>();
for (int i = 0; i < aclCreations.size(); i++)
responses.add(new CreateAclsResponse.AclCreationResponse(ApiError.fromThrowable(throwable)));
return new CreateAclsResponse(throttleTimeMs, responses);
default:
throw new IllegalArgumentException(String.format("Version %d is not valid. Valid versions for %s are 0 to %d",
versionId, this.getClass().getSimpleName(), ApiKeys.CREATE_ACLS.latestVersion()));
}
}
public static CreateAclsRequest parse(ByteBuffer buffer, short version) {
return new CreateAclsRequest(ApiKeys.CREATE_ACLS.parseRequest(version, buffer), version);
}
private void validate(List aclCreations) {
if (version() == 0) {
final boolean unsupported = aclCreations.stream()
.map(AclCreation::acl)
.map(AclBinding::pattern)
.map(ResourcePattern::patternType)
.anyMatch(patternType -> patternType != PatternType.LITERAL);
if (unsupported) {
throw new UnsupportedVersionException("Version 0 only supports literal resource pattern types");
}
}
final boolean unknown = aclCreations.stream()
.map(AclCreation::acl)
.anyMatch(AclBinding::isUnknown);
if (unknown) {
throw new IllegalArgumentException("You can not create ACL bindings with unknown elements");
}
}
}
