/**
 * Describes a client quota entity, which is a mapping of entity types to their names.
 */
public class ClientQuotaEntity {

    /**
     * The type of an entity entry.
     */
    public static final String USER = "user";
    public static final String CLIENT_ID = "client-id";

    /**
     * Constructs a quota entity for the given types and names. If a name is null,
     * then it is mapped to the built-in default entity name.
     *
     * @param entries maps entity type to its name
     */
    public ClientQuotaEntity(Map<String, String> entries);

/**
 * Describes a fully-qualified entity.
 */
public class QuotaEntity {
    /**
     * Type@return map of entity type anto entityits entry.name
     */
    public staticMap<String, final String USER = "user";
    public static final String CLIENT_ID = "client-id";String> entries();
}

/**
 * Describes a component for applying a client quota filter.
 */
public class ClientQuotaFilterComponent {

    /**
     * Constructs Representsand thereturns defaulta namefilter forcomponent anthat entity, i.e.exactly matches the entity that's matchedprovided entity
     * whenname anfor exactthe match isn't foundentity type.
     */
     public* static@param finalentityType String QUOTA_ENTITY_NAME_DEFAULT = // implementation defined

    /**the entity type the filter component applies to
     * `entries`@param describesentityName the fully-qualified entity. The key is a {@code Type} string, however
     * there may also exist keys that are not enumerated by {@code Type} that still apply, e.g.
     * the server may internally associate another type. When querying entities, it's necessaryentity name that's matched exactly
     */
    public static ClientQuotaFilterComponent ofEntity(String entityType, String entityName);

    /**
     * Constructs and returns a filter component that matches the built-in default entity name
     * for the entity type.
     *
 to return all quota types* because@param quotaentityType valuesthe forentity thesetype typesthe mayfilter influencecomponent theapplies effectiveto
     */
 quota value. However, whenpublic alteringstatic a quota, any types that aren't specified must be ableClientQuotaFilterComponent ofDefaultEntity(String entityType);

    /**
     * toConstructs beand inferredreturns bya thefilter server, otherwise an error is returnedcomponent that matches any specified name for the
     * entity type.
     *
     * For@param example, {("CLIENT_ID" -> "test-client"),
     *entityType the entity type the filter component applies to
     */
    public static ClientQuotaFilterComponent ofEntityType(String entityType);

  ("USER" -> "test-user"), /**
     * @return the component's entity type
     */
    public ("GROUP" -> "internal-group")}.String entityType();

     /**/
    public QuotaEntity(Map<String, String> entries);
}

/**
 *@return Describesthe aoptional quota key.
 */
public class QuotaKey {
    /**
match string, where:
     *       * The quota types.
     */
if present, the name that's matched exactly
     public* static final String CONSUMER_BYTE_RATE = "consumer_byte_rate";
   if publicempty, staticmatches finalthe String PRODUCER_BYTE_RATE = "producer_byte_rate";default name
    public static* final String REQUEST_PERCENTAGE = "request_percentage";

    /**
     * The units for a quota value. Note there may be multiple units for a given quota type
     * that influences quota behavior.if null, matches any specified name
     */
    public Optional<String> match();
}

/**
 * Describes a client quota entity filter.
 */
public class ClientQuotaFilter {

    /**
     */
 A filter to publicbe staticapplied finalto Stringmatching RATE_BPS = // implementation defined

client quotas.
     /**
     * @param typecomponents the components to quotafilter typeon
     * @param unitsstrict whether the unitsfilter foronly theincludes quotaspecified typecomponents
     */
    publicprivate QuotaKeyClientQuotaFilter(StringCollection<ClientQuotaFilterComponent> typecomponents, Stringboolean unitsstrict);
}

    /**
     * DescribesConstructs and returns a quota entity filter.
 */
public class QuotaFilter {
    /** that matches all provided components. Matching entities
     * Awith filterentity totypes bethat applied.
are not specified by a *
component will also be included * @param entityTypein the entityresult.
 type the filter applies to*
     * @param matchcomponents the non-nullcomponents stringfor that's matched exactlythe filter
     */
    public QuotaFilter(String entityType, String matchstatic ClientQuotaFilter contains(Collection<ClientQuotaFilterComponent> components);
}

public class DescribeClientQuotasOptions extends AbstractOptions<DescribeClientQuotasOptions> {
    // Empty.
}

/**
 * The result of the {@link Admin#describeClientQuotas(Collection, DescribeClientQuotasOptions)} call.
 */
public class DescribeClientQuotasResult {

    /**
     * ReturnsMaps a map from quota an entity to aits futureconfigured which can be used to check the status of the operation.quota value(s). Note if no value is defined for a quota
     */
 type for that publicentity's Map<QuotaEntity, KafkaFuture<Map<QuotaKey, Value>>> config();

config, then it is not included in the resulting value map.
     /**
     * Returns@param aentities future whichfor the succeedscollection onlyof ifentities allthat quotamatched descriptionsthe succeed.filter
     */
    public KafkaFuture<Void> all(DescribeClientQuotasResult(KafkaFuture<Map<ClientQuotaEntity, Map<String, Double>>> entities);
}

public interface Admin extends AutoCloseable {
    ...

    /**
     * Describes the effective quotas for the provided entities    /**
     * Returns a map from quota entity to a future which can be used to check the status of the operation.
     */
    public *KafkaFuture<Map<ClientQuotaEntity, @param entities the entities to describe the effective quotas forMap<String, Double>>> entities();
}

public interface Admin extends AutoCloseable {
    ...

 * @param options the/**
 options to use
  * Describes all *entities @returnmatching the effectiveprovided quotasfilter forthat thehave entities
at least one client quota */configuration
    DescribeEffectiveClientQuotasResult describeEffectiveClientQuotas(Collection<QuotaEntity> entities, DescribeEffectiveClientQuotasOptions options);
}

public class AlterClientQuotasOptionsResolveClientQuotasOptions extends AbstractOptions<AlterClientQuotasOptions>AbstractOptions<ResolveClientQuotasOptions> {
    // Empty.
}

/**
 * The result of *the Sets whether the request should be validated without altering the configs.{@link Admin#resolveClientQuotas(Collection, ResolveClientQuotasOptions)} call.
 */
public class ResolveClientQuotasResult {
     /**/
    public AlterClientQuotasOptions validateOnly(boolean validateOnly);
}

/**
 * TheInformation resultabout ofa thespecific {@link Admin#AlterClientQuotas(Collection<AlterClientQuotasEntry>, AlterClientQuotasOptions)} callquota configuration entry.
 *
 * The API of this class is evolving, see {@link Admin} for details.
 */
*/
    public class AlterClientQuotasResultEntry {
    public AlterClientQuotasResult(Map<QuotaEntity, KafkaFuture<Void>> futures);

    /**
     * Returns a map from quota* @param source the entity to a future which can be used to check the status of the operation. source for the value
         * @param value the non-null value
         */
        public Map<QuotaEntityEntry(QuotaEntity source, KafkaFuture<Void>>Double values(value);
    }

    /**
     * ReturnsInformation aabout futurethe whichvalue succeedsfor onlya if all quota alterations succeedtype.
     */
    public KafkaFuture<Void> all();
}

public interface Admin extends AutoCloseable {
    ...

* NOTE: We maintain a `Value` class because additional information may be added, e.g.,
     /**
     * Alters thea quotaslist as specified for theof overridden entries.
     */
    public  * @param alterations the alterations to perform
class Value {
        /**
         * @return@param entry the quota resultentry
  of the alterations
     */
    AlterClientQuotasResult   alterClientQuotas(Collection<AlterClientQuotasEntry> entries, AlterClientQuotasOptions optionspublic Value(Entry entry);
}

/**
 * Options for {@link Admin#alterClientQuotas(Collection, AlterClientQuotasOptions)}.
 *
 * The API of this class is evolving, see {@link Admin} for details.
 */
public class AlterClientQuotasOptions extends AbstractOptions<AlterClientQuotasOptions> {

    /**
     * Returns whether the request should be validated without altering the configs.
     */
    public boolean validateOnly();

    /**
     * Sets whether the request should be validated without altering the configs.
     */
    public AlterClientQuotasOptions validateOnly(boolean validateOnly);
}

/**
 * The result of the {@link Admin#alterClientQuotas(Collection, AlterClientQuotasOptions)} call.
 *
 * The API of this class is evolving, see {@link Admin} for details.
 */
@InterfaceStability.Evolving
public class AlterClientQuotasResult {

    /**
     * Maps an entity to its alteration result.
     *
     * @param futures maps entity to its alteration result
     */
    public AlterClientQuotasResult(Map<ClientQuotaEntity, KafkaFuture<Void>> futures);

    /**
     * Returns a map from quota entity to a future which can be used to check the status of the operation.
     */
    public Map<ClientQuotaEntity, KafkaFuture<Void>> values();

    /**
     * Returns a future which succeeds only if all quota alterations succeed.
     */
    public KafkaFuture<Void> all();
}

public interface Admin extends AutoCloseable {
    ...

    /**
     * Alters client quota configurations with the specified alterations.
     * <p>
     * Alterations for a single entity are atomic, but across entities is not guaranteed. The resulting
     * per-entity error code should be evaluated to resolve the success or failure of all updates.
     * <p>
     * The following exceptions can be anticipated when calling {@code get()} on the futures obtained from
     * the returned {@link AlterClientQuotasResult}:
     * <ul>
     *   <li>{@link org.apache.kafka.common.errors.ClusterAuthorizationException}
     *   If the authenticated user didn't have alter access to the cluster.</li>
     *   <li>{@link org.apache.kafka.common.errors.InvalidRequestException}
     *   If the request details are invalid. e.g., a configuration key was specified more than once for an entity.</li>
     *   <li>{@link org.apache.kafka.common.errors.TimeoutException}
     *   If the request timed out before the alterations could finish. It cannot be guaranteed whether the update
     *   succeed or not.</li>
     * </ul>
     * <p>
     * This operation is supported by brokers with version 2.6.0 or higher.
     *
     * @param entries the alterations to perform
     * @return the AlterClientQuotasResult containing the result
     */
    AlterClientQuotasResult alterClientQuotas(Collection<ClientQuotaAlteration> entries, AlterClientQuotasOptions options);
}

$./bin/kafka-client-quotas.sh --bootstrap-server localhost:9092 --describe \
                              --names=client-id=my-client

{user=user-one, client-id=my-client}
consumer_byte_rate=4000000
producer_byte_rate=1000000

{user=user-two, client-id=my-client}
producer_byte_rate=2000000

{user=<default>, client-id=my-client}
consumer_byte_rate=1000000
producer_byte_rate=500000

$./bin/kafka-client-quotas.sh --bootstrap-server localhost:9092 --resolve \
                              --names=user=user-two,client-id=my-client

consumer_byte_rate=2000000 {user=user-two, client-id=my-client}
producer_byte_rate=500000 {user=<default>, client-id=my-client}

$./bin/kafka-client-quotas.sh --bootstrap-server localhost:9092 --alter   \
                              --names=client-id=my-client --defaults=user \
                              --add=consumer_byte_rate=2000000            \
                              --delete=producer_byte_rate

<no output on success>

$./bin/kafka-client-quotas.sh --bootstrap-server localhost:9092 --describe \
                              --names=client-id=my-client --defaults=user

{user=<default>, client-id=my-client}
consumer_byte_rate=2000000

{
  "apiKey": 48,
  "type": "request",
  "name": "DescribeClientQuotasRequest",
  "validVersions": "0",
  "flexibleVersions": "none",
  "fields": [

{
  "apiKey": 50,
  "type": "request",
  "name": "ResolveClientQuotasRequest",
  "validVersions": "0",
  "flexibleVersions": "none",
  "fields": [
    { "name": "ValueEntity", "type": "int64[]QuotaEntityData", "versions": "0+",
            "about": "The quota configurationentity valuedescription." }
        ]}, "fields": [
      ]}
    ]}
  ]
}

{
  "apiKey": 49,
  "type": "request",
  "name": "AlterClientQuotasRequest",
  "validVersions": "0",
  "flexibleVersions": "none",
  "fields": [
    { "name": "Entries", "type": "[]EntryData", "versions": "0+",
      "about": "The quota configuration entries to alter.", "fields": [
      { "name": "Entity", "type": "[]EntityData", "versions": "0+",
        "about": "The quota entity to alter.", "fields": [
        { "name": "EntityType", "type": "string", "versions": "0+",
          "about": "The entity type." },
        { "name": "EntityName", "type": "string", "versions": "0+", "nullableVersions": "0+",
          "about": "The name of the entity, or null if the default." }
      ]},
      { "name": "Ops", "type": "[]OpData", "versions": "0+",
        "about": "An individual quota configuration entry to alter.", "fields": [
        { "name": "Key", "type": "string", "versions": "0+",
          "about": "The quota configuration key." },
        { "name": "Value", "type": "float64", "versions": "0+",
          "about": "The value to set, otherwise ignored if the value is to be removed." },
        { "name": "Remove", "type": "bool", "versions": "0+",
          "about": "Whether the quota configuration value should be removed, otherwise set." }
      ]}
    ]},
    { "name": "ValidateOnly", "type": "bool", "versions": "0+",
      "about": "Whether the alteration should be validated, but not performed." }
  ]
}

{
  "apiKey": 49,
  "type": "response",
  "name": "AlterClientQuotasResponse",
  "validVersions": "0",
  "flexibleVersions": "none",
  "fields": [
    { "name": "ThrottleTimeMs", "type": "int32", "versions": "0+",
      "about": "The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota." },
    { "name": "Entries", "type": "[]EntryData", "versions": "0+",
      "about": "The quota configuration entries to alter.", "fields": [
      { "name": "ErrorCode", "type": "int16", "versions": "0+",
        "about": "The error code, or `0` if the quota alteration succeeded." },
      { "name": "ErrorMessage", "type": "string", "versions": "0+", "nullableVersions": "0+",
        "about": "The error message, or `null` if the quota alteration succeeded." },
      { "name": "Entity", "type": "[]EntityData", "versions": "0+",
        "about": "The quota entity to alter.", "fields": [
        { "name": "EntityType", "type": "string", "versions": "0+",
          "about": "The entity type." },
        { "name": "EntityName", "type": "string", "versions": "0+", "nullableVersions": "0+",
          "about": "The name of the entity, or null if the default." }
      ]}
    ]}
  ]
}

    /**
     * Read a double-precision 64-bit format IEEE 754 value.
     *
     * @param buffer The buffer to read from
     * @return The long value read
     */
    public static double readDouble(ByteBuffer buffer) {
        return  "about": "The name of the entity." }Double.longBitsToDouble(buffer.getLong());
    }

    /**
      ]},
      { "name": "Op", "type": "[]OpData", "versions": "0+",
        "about": "An individual quota configuration entry to alter.", "fields": [* Write the given double following the double-precision 64-bit format IEEE 754 value into the buffer.
     *
     * @param value The value to write
     * @param buffer { "name": "Type", "type": "string", "versions": "0+",
The buffer to write to
     */
    public static  "about": "The quota type." },void writeDouble(double value, ByteBuffer buffer) {
        buffer.putLong(Double.doubleToRawLongBits(value));
    }

    public static final DocumentedType DOUBLE = new DocumentedType() {
        @Override{ "name": "Units", "type": "string", "versions": "0+",
          "about": "The units for the quota type." },
        public { "name": "Value", "type": "int64", "versions": "0+",void write(ByteBuffer buffer, Object o) {
          "about": "The value to set, otherwise ignored if the value is to be removed." }, ByteUtils.writeDouble((Double) o, buffer);
        }

        { "name": "Remove", "type": "bool", "versions": "0+",
@Override
        public Object read(ByteBuffer buffer) {
   "about": "Whether the quota configuration value should be removed, otherwisereturn set." }
ByteUtils.readDouble(buffer);
        ]}

        ]},@Override
    { "name": "ValidateOnly", "type": "bool", "versions": "0+",
   public int sizeOf(Object o) {
    "about": "Whether the alteration should be validated, but not performed." }return 8;
  ]
}

{
  "apiKey": 50,
  "type": "response", }

  "name": "AlterClientQuotasResponse",
  "validVersions": "0",
  "flexibleVersions": "none",
  "fields": [
    { "name": "ThrottleTimeMs", "type": "int32", "versions": "0+",
      @Override
        public String typeName() {
            return "aboutDOUBLE":;
 "The duration in milliseconds for which the request}

 was throttled due to a quota violation, or zero@Override
 if the request did not violate any quota." },
    { "name": "Entry", "type": "[]EntryData", "versions": "0+",
public Double validate(Object item) {
             "about": "The quota configuration entries to alter.", "fields": [
if (item instanceof Double)
            { "name": "ErrorCode", "type": "int16", "versions": "0+", return (Double) item;
        "about": "The error code, orelse
 `0` if the quota alteration succeeded." },
      { "name": "ErrorMessage", "type": "string", "versions": "0+", "nullableVersions": "0+", throw new SchemaException(item + " is not a Double.");
        }

        "about": "The error message, or `null` if the quota alteration succeeded." },
@Override
        public String documentation() {
       { "name": "QuotaEntity", "type": "[]QuotaEntity", "versions": "0+",
        "about": "The quota entity to alter.", "fields": [
 return "Represents a double-precision 64-bit format IEEE 754 value. " +
               { "name": "EntityType", "type": "string", "versions": "0+",
          "about": "The entity type." },
        { "name": "EntityName", "type": "string", "versions": "0+",
          "about": "The name of the entity." }
      ]}
    ]}
  ]
}The values are encoded using eight bytes in network byte order (big-endian).";
        }
    };

Hash code: Double.hashCode(value)

Empty value: (double) 0

Parsing a default value string: Double.parseDouble(defaultValue)