/**
 * 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);

    /**
     * @return map of entity type to its name
     */
    public Map<String, String> entries();
}

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

    /**
     * Constructs and returns a filter component that exactly matches the provided entity
     * name for the entity type.
     *
     * @param entityType the entity type the filter component applies to
     * @param entityName the entity 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.
     *
     * @param entityType the entity type the filter component applies to
     */
    public static ClientQuotaFilterComponent ofDefaultEntity(String entityType);

    /**
     * Constructs and returns a filter component that matches any specified name for the
     * entity type.
     *
     * @param entityType the entity type the filter component applies to
     */
    public static ClientQuotaFilterComponent ofEntityType(String entityType);

    /**
     * @return the component's entity type
     */
    public String entityType();

    /**
     * @return the optional match string, where:
     *         if present, the name that's matched exactly
     *         if empty, matches the default name
     *         if null, matches any specified name
     */
    public Optional<String> match();
}

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

    /**
     * A filter to be applied to matching client quotas.
     *
     * @param components the components to filter on
     * @param strict whether the filter only includes specified components
     */
    private ClientQuotaFilter(Collection<ClientQuotaFilterComponent> components, boolean strict);

    /**
     * Constructs and returns a quota filter that matches all provided components. Matching entities
     * with entity types that are not specified by a component will also be included in the result.
     *
     * @param components the components for the filter
     */
    public static ClientQuotaFilter contains(Collection<ClientQuotaFilterComponent> components);

    /**
     * Constructs and returns a quota filter that matches all provided components. Matching entities
     * with entity types that are not specified by a component will *not* be included in the result.
     *
     * @param components the components for the filter
     */
    public static ClientQuotaFilter containsOnly(Collection<ClientQuotaFilterComponent> components);

    /**
     * Constructs and returns a quota filter that matches all configured entities.
     */
    public static ClientQuotaFilter all();

    /**
     * @return the filter's components
     */
    public Collection<ClientQuotaFilterComponent> components();

    /**
     * @return whether the filter is strict, i.e. only includes specified components
     */
    public boolean strict();
}

/**
 * Describes a configuration alteration to be made to a client quota entity.
 */
public class ClientQuotaAlteration {

    public static class Op {

        /**
         * @param key the quota type to alter
         * @param value if set then the existing value is updated,
         *              otherwise if null, the existing value is cleared
         */
        public Op(String key, Double value);

        /**
         * @return the quota type to alter
         */
        public String key();

        /**
         * @return if set then the existing value is updated,
         *         otherwise if null, the existing value is cleared
         */
        public Double value();
    }

    private final ClientQuotaEntity entity;
    private final Collection<Op> ops;

    /**
     * @param entity the entity whose config will be modified
     * @param ops the alteration to perform
     */
    public ClientQuotaAlteration(ClientQuotaEntity entity, Collection<Op> ops);

    /**
     * @return the entity whose config will be modified
     */
    public ClientQuotaEntity entity();

    /**
     * @return the alteration to perform
     */
    public Collection<Op> ops();
}

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

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

    /**
     * Maps an entity to its configured quota value(s). Note if no value is defined for a quota
     * type for that entity's config, then it is not included in the resulting value map.
     *
     * @param entities future for the collection of entities that matched the filter
     */
    public DescribeClientQuotasResult(KafkaFuture<Map<ClientQuotaEntity, Map<String, Double>>> 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, Map<String, Double>>> entities();
}

public interface Admin extends AutoCloseable {
    ...

    /**
     * Describes all entities matching the provided filter that have at least one client quota configuration
     * value defined.
     * <p>
     * The following exceptions can be anticipated when calling {@code get()} on the future from the
     * returned {@link DescribeClientQuotasResult}:
     * <ul>
     *   <li>{@link org.apache.kafka.common.errors.ClusterAuthorizationException}
     *   If the authenticated user didn't have describe access to the cluster.</li>
     *   <li>{@link org.apache.kafka.common.errors.InvalidRequestException}
     *   If the request details are invalid. e.g., an invalid entity type was specified.</li>
     *   <li>{@link org.apache.kafka.common.errors.TimeoutException}
     *   If the request timed out before the describe could finish.</li>
     * </ul>
     * <p>
     * This operation is supported by brokers with version 2.6.0 or higher.
     *
     * @param filter the filter to apply to match entities
     * @param options the options to use
     * @return the DescribeClientQuotasResult containing the result
     */
    DescribeClientQuotasResult describeClientQuotas(ClientQuotaFilter filter, DescribeClientQuotasOptions options);
}

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

/**
 * The result of the {@link Admin#resolveClientQuotas(Collection, ResolveClientQuotasOptions)} call.
 */
public class ResolveClientQuotasResult {
    /**
     * Information about a specific quota configuration entry.
     */
    public class Entry {
        /**
         * @param source the entity source for the value
         * @param value the non-null value
         */
        public Entry(QuotaEntity source, Double value);
    }

    /**
     * Information about the value for a quota type.
     *
     * NOTE: We maintain a `Value` class because additional information may be added, e.g.,
     *       a list of overridden entries.
     */
    public class Value {
        /**
         * @param entry the quota entry
         */
        public Value(Entry entry);
    }

    /**
     * Maps a collection of entities to their resolved quota values.
     *
     * @param config the quota configuration for the requested entities

/**
 * Describes a fully-qualified entity.
 */
public class QuotaEntity {
    /**
     * Type of an entity entry.
     */
    public enum Type {
        USER,
        CLIENT_ID;
    }

    /**
     * Represents the default name for an entity, i.e. the entity that's matched
     * when an exact match isn't found.
     */
    public final static String QUOTA_ENTITY_NAME_DEFAULT = // implementation defined

    /**
     * `entries` describes 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 necessary
     * to return all quota types because quota values for these types may influence the effective
     * quota value. However, when altering a quota, any types that aren't specified must be able
     * to be inferred by the server, otherwise an error is returned.
     *
     * For example, {("CLIENT_ID" -> "test-client"),
     *               ("USER" -> "test-user"),
     *               ("GROUP" -> "internal-group")}.
     */
    public QuotaEntity(Map<StringResolveClientQuotasResult(Map<QuotaEntity, KafkaFuture<Map<String, String>Value>>> entriesconfig);
}

    /**
 * Describes a quota key.
 */
public classReturns QuotaKeya {
map from quota entity /**
to a future which can *be Theused quotato types.
check the status of the */operation.
    public enum Type {*/
    public Map<QuotaEntity, KafkaFuture<Map<String,  CONSUMER_BYTE_RATE,Value>>> config();

    /**
    PRODUCER_BYTE_RATE,
 * Returns a future which succeeds only REQUEST_PERCENTAGE;
if all quota descriptions }succeed.

     */**
    public * The units for a quota value. Note there may be multiple units for a given quota typeKafkaFuture<Void> all();
}

public interface Admin extends AutoCloseable {
    ...

    /**
     * Resolves thatthe influenceseffective quota behavior.
values for the provided  */entities.
    public enum Units {*
     * @param entities RATE_BPS;
the entities to describe }

the resolved quotas  /**for
     * @param typeoptions the quotaoptions to typeuse
     * @param@return unitsthe theresolved unitsquotas for the quota type entities
     */
    ResolveClientQuotasResult */
    public QuotaKey(Type type, Units units);
}

/**
 * Describes a quota entity filterresolveClientQuotas(Collection<QuotaEntity> entities, ResolveClientQuotasOptions options);
}

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

    /**
    EXACT, * Returns whether //the exactrequest nameshould match
be validated without altering the configs.
   PREFIX;   *// matches all names with the given prefix

    public boolean }validateOnly();

    /**
     * Sets Awhether filteringthe rulerequest toshould be applied.
validated without altering the  *configs.
     */
 @param entityType the entitypublic typeAlterClientQuotasOptions the rule applies to
     * @param rule the rule to apply
     * @param match the non-null string that's applied by the rule
     */
    public QuotaFilter(QuotaEntity.Type entityType, Rule rule, String match);
}

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

public class AlterQuotasEntry {
    public class Op {
        /**
         * @param key the quota type and units to alter
         * @param value if set then the existing value is updated,
         *              otherwise if null, the existing value is cleared
         */
        public Op(QuotaKey key, Long value);
    }

    /**
     * @param entity the entity whose config will be modified
     * @param ops the alteration to perform - if value is set, then the existing value is updated,
     *--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 \
                    otherwise if null, the existing value is cleared
   --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   \
          */
    public AlterQuotasEntry(QuotaEntity entity, Collection<Op> ops);
}

public class AlterQuotasOptions extends AbstractOptions<AlterQuotasOptions> {
    /**
     * Sets whether the request should be validated without altering the configs.
     */
    public AlterQuotasOptions validateOnly(boolean validateOnly);
}

/**
 * The result of the {@link Admin#alterQuotas(Collection<AlterQuotasEntry>, AlterQuotasOptions)} call.
 *
 * The API of this class is evolving, see {@link Admin} for details.
 */
public class AlterQuotasResult {
    public AlterQuotasResult(Map<QuotaEntity, KafkaFuture<Void>> futures);

    /**--names=client-id=my-client --defaults=user \
                              --add=consumer_byte_rate=2000000            \
     * Returns a map from quota entity to a future which can be used to check the status of the operation.
     */
    public Map<QuotaEntity, KafkaFuture<Void>> values();
--delete=producer_byte_rate

<no output on success>

$./bin/kafka-client-quotas.sh --bootstrap-server localhost:9092 --describe \
    /**
     * Returns a future which succeeds only if all quota alterations succeed.
     */
    public KafkaFuture<Void> all();
}

public interface Admin extends AutoCloseable {
    ...

    /**
     * Alters the quotas as specified for the entries.
     *
     * @param alterations the alterations to perform
     * @return the result of the alterations
     */
    AlterQuotasResult alterQuotas(Collection<AlterQuotasEntry> entries, AlterQuotasOptions options);
}

{
  "apiKey": 48,
  "type": "request",
  "name": "DescribeClientQuotasRequest",
  "validVersions": "0",
  "flexibleVersions": "none",
  "fields": [
    { "name": "Components", "type": "[]ComponentData", "versions": "0+",
      "about": "Filter components to apply to quota entities.", "fields": [
      { "name": "EntityType", "type": "string", "versions": "0+",
        "about": "The entity type that the filter component applies to." },
      { "name": "MatchType", "type": "int8", "versions": "0+",
        "about": "How to match the entity {0 = exact name, 1 = default name, 2 = any specified name}." },
      { "name": "Match", "type": "string", "versions": "0+", "nullableVersions": "0+",
        "about": "The string to match against, or null if unused for the match type." }
    ]},
    { "name": "Strict", "type": "bool", "versions": "0+",
      "about": "Whether the match is strict, i.e. should exclude entities with unspecified entity types." }
  ]
}

{
  "apiKey": 48,
  "type": "response",
  "name": "DescribeClientQuotasResponse",
  "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": "ErrorCode", "type": "int16", "versions": "0+",
      "about": "The error code, or `0` if the quota description succeeded." },
    { "name": "ErrorMessage", "type": "string", "versions": "0+", "nullableVersions": "0+",
      "about": "The error message, or `null` if the quota description succeeded." },
    { "name": "Entries", "type": "[]EntryData", "versions": "0+", "nullableVersions": "0+",
      "about": "A result entry.", "fields": [
      { "name": "Entity", "type": "[]EntityData", "versions": "0+",
        "about": "The quota entity description.", "fields": [
        { "name": "EntityType", "type": "string", "versions": "0+",

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

consumer_byte_rate:shares=200 {user=user-one, client-id=my-client}
producer_byte_rate:bps=10000000 {user=user-one, client-id=my-client}
producer_byte_rate:broker_bps=500000 {user=<default>, client-id=my-client}

$./bin/kafka-quotas.sh --bootstrap-server localhost:9092 --describe \
                       --names=user=user-two,client-id=my-client    \
          "about": "The entity           --include-overrides

consumer_byte_rate:shares=100 {user=<default>, client-id=my-client}
producer_byte_rate:broker_bps=2000000 {user=user-two, client-id=my-client}
*producer_byte_rate:broker_bps=500000 {user=<default>, client-id=my-client}

{
  "apiKey": 49,
  "type": "request",
  "name": "AlterClientQuotasRequest",


{
  "apiKeyvalidVersions": 49"0",
  "typeflexibleVersions": "responsenone",
  "fields": [
    { "name": "DescribeEffectiveQuotasResponseEntries",
 "type": "validVersions[]EntryData", "versions": "0+",
      "flexibleVersionsabout": "noneThe quota configuration entries to alter.",
  "fields": [
      { "name": "ThrottleTimeMsEntity", "type": "int32[]EntityData", "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 quota entity to alter.", "fields": [
        { "name": "EntityType", "type": "string", "versions": "0+",
          "about": "The entity type." },
        { "name": "EntryEntityName", "type": "[]QuotaEntryDatastring", "versions": "0+", "nullableVersions": "0+",
          "about": "Effective quota entries.", "fields": [The name of the entity, or null if the default." }
      ]},
      { "name": "ErrorCodeOps", "type": "int16[]OpData", "versions": "0+",
        "about": "TheAn errorindividual code,quota orconfiguration `0`entry if the effective quota description succeeded." },
 to alter.", "fields": [
        { "name": "ErrorMessageKey", "type": "string", "versions": "0+",
 "nullableVersions": "0+",
        "about": "The error message, or `null` if the effective quota descriptionconfiguration succeededkey." },
        { "name": "QuotaEntityValue", "type": "[]QuotaEntityfloat64", "versions": "0+",
          "about": "Effective quota entries.", "fields": [ "The value to set, otherwise ignored if the value is to be removed." },
        { "name": "EntityTypeRemove", "type": "stringbool", "versions": "0+",
          "about": "The entity typeWhether the quota configuration value should be removed, otherwise set." },
      ]}
    ]},
    { "name": "EntityNameValidateOnly", "type": "stringbool", "versions": "0+",
          "about": "TheWhether entitythe name." }
      ]},
      { "namealteration should be validated, but not performed." }
  ]
}

{
  "apiKey": 49,
  "type": "QuotaValuesresponse",
  "typename": "[]QuotaValueDataAlterClientQuotasResponse",
  "versionsvalidVersions": "0+",
        "aboutflexibleVersions": "Quota configuration values.none",
  "fields": [
        { "name": "TypeThrottleTimeMs", "type": "stringint32", "versions": "0+",
          "about": "The quotaduration type." },
        { "name": "Units", "type": "string", "versions": "0+",
          "about": "The units for the quota typein milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota." },
        { "name": "EntryEntries", "type": "[]ValueEntryDataEntryData", "versions": "0+",
          "about": "QuotaThe quota valueconfiguration entries to alter.", "fields": [
          { "name": "QuotaEntityErrorCode", "type": "[]ValueQuotaEntityint16", "versions": "0+",
            "about": "EffectiveThe quotaerror entries."code, "fields": [
      or `0` if the quota alteration succeeded." },
      { "name": "EntityTypeErrorMessage", "type": "string", "versions": "0+",
      "nullableVersions": "0+",
        "about": "The error entity type." },
      message, or `null` if the quota alteration succeeded." },
      { "name": "EntityNameEntity", "type": "string[]EntityData", "versions": "0+",
              "about": "The quota entity nameto alter." }
          ]},
 , "fields": [
         { "name": "ValueEntityType", "type": "int64string", "versions": "0+",
            "about": "The quotaentity configuration valuetype." }
        ]},
      ]}
    ]}
  ]
}

    /**
     * Read  "about": "The quota entity to alter.", "fields": [a double-precision 64-bit format IEEE 754 value.
     *
   { "name": "EntityType", "type": "string", "versions": "0+",
     * @param buffer The buffer to read from
     * "about":@return "The entitylong type." },value read
     */
   { "name": "EntityName", "type": "string", "versions": "0+",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": "AlterQuotasResponse",
  "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)