com.hazelcast.client.impl.protocol.codec.CardinalityEstimatorEstimateCodec Maven / Gradle / Ivy

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/*
 * Copyright (c) 2008-2021, Hazelcast, Inc. All Rights Reserved.
 *
 * Licensed 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 com.hazelcast.client.impl.protocol.codec;

import com.hazelcast.client.impl.protocol.ClientMessage;
import com.hazelcast.client.impl.protocol.Generated;
import com.hazelcast.client.impl.protocol.codec.builtin.*;
import com.hazelcast.client.impl.protocol.codec.custom.*;

import javax.annotation.Nullable;

import static com.hazelcast.client.impl.protocol.ClientMessage.*;
import static com.hazelcast.client.impl.protocol.codec.builtin.FixedSizeTypesCodec.*;

/*
 * This file is auto-generated by the Hazelcast Client Protocol Code Generator.
 * To change this file, edit the templates or the protocol
 * definitions on the https://github.com/hazelcast/hazelcast-client-protocol
 * and regenerate it.
 */

/**
 * Estimates the cardinality of the aggregation so far.
 * If it was previously estimated and never invalidated, then the cached version is used.
 */
@Generated("fc5652f8a85e5b1283971d98b3a4536f")
public final class CardinalityEstimatorEstimateCodec {
    //hex: 0x190200
    public static final int REQUEST_MESSAGE_TYPE = 1638912;
    //hex: 0x190201
    public static final int RESPONSE_MESSAGE_TYPE = 1638913;
    private static final int REQUEST_INITIAL_FRAME_SIZE = PARTITION_ID_FIELD_OFFSET + INT_SIZE_IN_BYTES;
    private static final int RESPONSE_RESPONSE_FIELD_OFFSET = RESPONSE_BACKUP_ACKS_FIELD_OFFSET + BYTE_SIZE_IN_BYTES;
    private static final int RESPONSE_INITIAL_FRAME_SIZE = RESPONSE_RESPONSE_FIELD_OFFSET + LONG_SIZE_IN_BYTES;

    private CardinalityEstimatorEstimateCodec() {
    }

    public static ClientMessage encodeRequest(java.lang.String name) {
        ClientMessage clientMessage = ClientMessage.createForEncode();
        clientMessage.setRetryable(false);
        clientMessage.setOperationName("CardinalityEstimator.Estimate");
        ClientMessage.Frame initialFrame = new ClientMessage.Frame(new byte[REQUEST_INITIAL_FRAME_SIZE], UNFRAGMENTED_MESSAGE);
        encodeInt(initialFrame.content, TYPE_FIELD_OFFSET, REQUEST_MESSAGE_TYPE);
        encodeInt(initialFrame.content, PARTITION_ID_FIELD_OFFSET, -1);
        clientMessage.add(initialFrame);
        StringCodec.encode(clientMessage, name);
        return clientMessage;
    }

    /**
     * The name of CardinalityEstimator
     */
    public static java.lang.String decodeRequest(ClientMessage clientMessage) {
        ClientMessage.ForwardFrameIterator iterator = clientMessage.frameIterator();
        //empty initial frame
        iterator.next();
        return StringCodec.decode(iterator);
    }

    public static ClientMessage encodeResponse(long response) {
        ClientMessage clientMessage = ClientMessage.createForEncode();
        ClientMessage.Frame initialFrame = new ClientMessage.Frame(new byte[RESPONSE_INITIAL_FRAME_SIZE], UNFRAGMENTED_MESSAGE);
        encodeInt(initialFrame.content, TYPE_FIELD_OFFSET, RESPONSE_MESSAGE_TYPE);
        encodeLong(initialFrame.content, RESPONSE_RESPONSE_FIELD_OFFSET, response);
        clientMessage.add(initialFrame);

        return clientMessage;
    }

    /**
     * the previous cached estimation or the newly computed one.
     */
    public static long decodeResponse(ClientMessage clientMessage) {
        ClientMessage.ForwardFrameIterator iterator = clientMessage.frameIterator();
        ClientMessage.Frame initialFrame = iterator.next();
        return decodeLong(initialFrame.content, RESPONSE_RESPONSE_FIELD_OFFSET);
    }
}