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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.config.ConfigResource;
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 java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import static org.apache.kafka.common.protocol.types.Type.BOOLEAN;
import static org.apache.kafka.common.protocol.types.Type.INT8;
import static org.apache.kafka.common.protocol.types.Type.NULLABLE_STRING;
import static org.apache.kafka.common.protocol.types.Type.STRING;
public class AlterConfigsRequest extends AbstractRequest {
private static final String RESOURCES_KEY_NAME = "resources";
private static final String RESOURCE_TYPE_KEY_NAME = "resource_type";
private static final String RESOURCE_NAME_KEY_NAME = "resource_name";
private static final String VALIDATE_ONLY_KEY_NAME = "validate_only";
private static final String CONFIG_ENTRIES_KEY_NAME = "config_entries";
private static final String CONFIG_NAME = "config_name";
private static final String CONFIG_VALUE = "config_value";
private static final Schema CONFIG_ENTRY = new Schema(
new Field(CONFIG_NAME, STRING, "Configuration name"),
new Field(CONFIG_VALUE, NULLABLE_STRING, "Configuration value"));
private static final Schema ALTER_CONFIGS_REQUEST_RESOURCE_V0 = new Schema(
new Field(RESOURCE_TYPE_KEY_NAME, INT8),
new Field(RESOURCE_NAME_KEY_NAME, STRING),
new Field(CONFIG_ENTRIES_KEY_NAME, new ArrayOf(CONFIG_ENTRY)));
private static final Schema ALTER_CONFIGS_REQUEST_V0 = new Schema(
new Field(RESOURCES_KEY_NAME, new ArrayOf(ALTER_CONFIGS_REQUEST_RESOURCE_V0),
"An array of resources to update with the provided configs."),
new Field(VALIDATE_ONLY_KEY_NAME, BOOLEAN));
/**
* The version number is bumped to indicate that on quota violation brokers send out responses before throttling.
*/
private static final Schema ALTER_CONFIGS_REQUEST_V1 = ALTER_CONFIGS_REQUEST_V0;
public static Schema[] schemaVersions() {
return new Schema[] {ALTER_CONFIGS_REQUEST_V0, ALTER_CONFIGS_REQUEST_V1};
}
public static class Config {
private final Collection entries;
public Config(Collection entries) {
this.entries = Objects.requireNonNull(entries, "entries");
}
public Collection entries() {
return entries;
}
}
public static class ConfigEntry {
private final String name;
private final String value;
public ConfigEntry(String name, String value) {
this.name = Objects.requireNonNull(name, "name");
this.value = Objects.requireNonNull(value, "value");
}
public String name() {
return name;
}
public String value() {
return value;
}
}
@SuppressWarnings("rawtypes")
public static class Builder extends AbstractRequest.Builder {
private final Map configs;
private final boolean validateOnly;
public Builder(Map configs, boolean validateOnly) {
super(ApiKeys.ALTER_CONFIGS);
this.configs = Objects.requireNonNull(configs, "configs");
this.validateOnly = validateOnly;
}
@Override
public AlterConfigsRequest build(short version) {
return new AlterConfigsRequest(version, configs, validateOnly);
}
}
private final Map configs;
private final boolean validateOnly;
public AlterConfigsRequest(short version, Map configs, boolean validateOnly) {
super(ApiKeys.ALTER_CONFIGS, version);
this.configs = Objects.requireNonNull(configs, "configs");
this.validateOnly = validateOnly;
}
public AlterConfigsRequest(Struct struct, short version) {
super(ApiKeys.ALTER_CONFIGS, version);
validateOnly = struct.getBoolean(VALIDATE_ONLY_KEY_NAME);
Object[] resourcesArray = struct.getArray(RESOURCES_KEY_NAME);
configs = new HashMap<>(resourcesArray.length);
for (Object resourcesObj : resourcesArray) {
Struct resourcesStruct = (Struct) resourcesObj;
ConfigResource.Type resourceType = ConfigResource.Type.forId(resourcesStruct.getByte(RESOURCE_TYPE_KEY_NAME));
String resourceName = resourcesStruct.getString(RESOURCE_NAME_KEY_NAME);
ConfigResource resource = new ConfigResource(resourceType, resourceName);
Object[] configEntriesArray = resourcesStruct.getArray(CONFIG_ENTRIES_KEY_NAME);
List configEntries = new ArrayList<>(configEntriesArray.length);
for (Object configEntriesObj: configEntriesArray) {
Struct configEntriesStruct = (Struct) configEntriesObj;
String configName = configEntriesStruct.getString(CONFIG_NAME);
String configValue = configEntriesStruct.getString(CONFIG_VALUE);
configEntries.add(new ConfigEntry(configName, configValue));
}
Config config = new Config(configEntries);
configs.put(resource, config);
}
}
public Map configs() {
return configs;
}
public boolean validateOnly() {
return validateOnly;
}
@Override
protected Struct toStruct() {
Struct struct = new Struct(ApiKeys.ALTER_CONFIGS.requestSchema(version()));
struct.set(VALIDATE_ONLY_KEY_NAME, validateOnly);
List resourceStructs = new ArrayList<>(configs.size());
for (Map.Entry entry : configs.entrySet()) {
Struct resourceStruct = struct.instance(RESOURCES_KEY_NAME);
ConfigResource resource = entry.getKey();
resourceStruct.set(RESOURCE_TYPE_KEY_NAME, resource.type().id());
resourceStruct.set(RESOURCE_NAME_KEY_NAME, resource.name());
Config config = entry.getValue();
List configEntryStructs = new ArrayList<>(config.entries.size());
for (ConfigEntry configEntry : config.entries) {
Struct configEntriesStruct = resourceStruct.instance(CONFIG_ENTRIES_KEY_NAME);
configEntriesStruct.set(CONFIG_NAME, configEntry.name);
configEntriesStruct.set(CONFIG_VALUE, configEntry.value);
configEntryStructs.add(configEntriesStruct);
}
resourceStruct.set(CONFIG_ENTRIES_KEY_NAME, configEntryStructs.toArray(new Struct[0]));
resourceStructs.add(resourceStruct);
}
struct.set(RESOURCES_KEY_NAME, resourceStructs.toArray(new Struct[0]));
return struct;
}
@Override
public AbstractResponse getErrorResponse(int throttleTimeMs, Throwable e) {
short version = version();
switch (version) {
case 0:
case 1:
ApiError error = ApiError.fromThrowable(e);
Map errors = new HashMap<>(configs.size());
for (ConfigResource resource : configs.keySet())
errors.put(resource, error);
return new AlterConfigsResponse(throttleTimeMs, errors);
default:
throw new IllegalArgumentException(String.format("Version %d is not valid. Valid versions for %s are 0 to %d",
version, this.getClass().getSimpleName(), ApiKeys.ALTER_CONFIGS.latestVersion()));
}
}
public static AlterConfigsRequest parse(ByteBuffer buffer, short version) {
return new AlterConfigsRequest(ApiKeys.ALTER_CONFIGS.parseRequest(version, buffer), version);
}
}
