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Central de ajuda/ Distributed Message Service for Kafka/ Referência de API/ APIs V2 (recomendado)/ Gerenciamento de instâncias/ Inicialização da reatribuição de partição para uma instância do Kafka
Atualizado em 2024-09-10 GMT+08:00
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Inicialização da reatribuição de partição para uma instância do Kafka

Função

Essa API é usada para enviar uma tarefa de rebalanceamento de partição a uma instância do Kafka ou calcular o tempo estimado de rebalanceamento.

Método de chamada

Para obter detalhes, consulte Chamada de APIs.

URI

POST /v2/kafka/{project_id}/instances/{instance_id}/reassign

Tabela 1 Parâmetros de caminho

Parâmetro

Obrigatório

Tipo

Descrição

project_id

Sim

String

ID do projeto. Para obter detalhes sobre como obtê-lo, consulte Obtenção de um ID de projeto.

instance_id

Sim

String

ID da instância.

Parâmetros de solicitação

Tabela 2 Parâmetros do corpo da solicitação

Parâmetro

Obrigatório

Tipo

Descrição

reassignments

Sim

Array of PartitionReassignEntity objects

Plano de reatribuição.

throttle

Não

Integer

Limite de reatribuição.

is_schedule

Não

Boolean

Indica se a tarefa está agendada. Se não, is_schedule e execute_at podem ser deixados em branco. Se sim, is_schedule é true e execute_at deve ser especificado.

execute_at

Não

Long

Horário de agendamento. O valor é um carimbo de data/hora UNIX, em ms.

time_estimate

Não

Boolean

Defina true para executar tarefas de estimativa de tempo e false para executar tarefas de rebalanceamento.

Padrão: false
Tabela 3 PartitionReassignEntity

Parâmetro

Obrigatório

Tipo

Descrição

topic

Sim

String

Nome do tópico.

brokers

Não

Array of integers

Lista de corretores aos quais as partições são reatribuídas. Este parâmetro é obrigatório na atribuição automática.

replication_factor

Não

Integer

Fator de replicação, que pode ser especificado na atribuição automática.

assignment

Não

Array of TopicAssignment objects

Plano de atribuição especificado manualmente. O parâmetro brokers e este parâmetro não podem estar vazios ao mesmo tempo.
Tabela 4 TopicAssignment

Parâmetro

Obrigatório

Tipo

Descrição

partition

Não

Integer

Número da partição na atribuição manual.

partition_brokers

Não

Array of integers

Lista de corretores a serem atribuídos a uma partição na atribuição manual.

Parâmetros de resposta

Código de status: 200

Tabela 5 Parâmetros do corpo de resposta

Parâmetro

Tipo

Descrição

job_id

String

ID da tarefa. Somente job_id é retornado para uma tarefa de rebalanceamento.

reassignment_time

Integer

Tempo estimado, em segundos. Somente reassignment_time é retornado para uma tarefa de estimativa de tempo.

Exemplo de solicitações

POST https://{endpoint}/v2/kafka/{project_id}/instances/{instance_id}/reassign

{
  "reassignments" : [ {
    "topic" : "topic-1513476102",
    "brokers" : [ 0, 1, 2 ],
    "replication_factor" : 3,
    "assignment" : [ {
      "partition" : 0,
      "partition_brokers" : [ 0, 1, 2 ]
    }, {
      "partition" : 1,
      "partition_brokers" : [ 1, 2, 0 ]
    }, {
      "partition" : 2,
      "partition_brokers" : [ 2, 0, 1 ]
    } ]
  }, {
    "topic" : "topic-1513558717",
    "brokers" : [ 0, 1, 4 ],
    "replication_factor" : 3,
    "assignment" : [ {
      "partition" : 0,
      "partition_brokers" : [ 0, 1, 2 ]
    }, {
      "partition" : 1,
      "partition_brokers" : [ 1, 2, 0 ]
    }, {
      "partition" : 2,
      "partition_brokers" : [ 2, 0, 1 ]
    } ]
  } ],
  "throttle" : 10000000,
  "time_estimate" : false
}

Exemplo de respostas

Código de status: 200

Tarefa de rebalanceamento enviada ou o tempo estimado é retornado.

{
  "job_id" : "8a2c259182ab0e9d0182ab1882560009",
  "reassignment_time" : 10
}

Código de exemplo do SDK

O código de exemplo do SDK é o seguinte.

Java

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package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.kafka.v2.region.KafkaRegion;
import com.huaweicloud.sdk.kafka.v2.*;
import com.huaweicloud.sdk.kafka.v2.model.*;

import java.util.List;
import java.util.ArrayList;

public class CreateReassignmentTaskSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");
        String projectId = "{project_id}";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                .withAk(ak)
                .withSk(sk);

        KafkaClient client = KafkaClient.newBuilder()
                .withCredential(auth)
                .withRegion(KafkaRegion.valueOf("<YOUR REGION>"))
                .build();
        CreateReassignmentTaskRequest request = new CreateReassignmentTaskRequest();
        request.withInstanceId("{instance_id}");
        PartitionReassignRequest body = new PartitionReassignRequest();
        List<Integer> listAssignmentPartitionBrokers = new ArrayList<>();
        listAssignmentPartitionBrokers.add(2);
        listAssignmentPartitionBrokers.add(0);
        listAssignmentPartitionBrokers.add(1);
        List<Integer> listAssignmentPartitionBrokers1 = new ArrayList<>();
        listAssignmentPartitionBrokers1.add(1);
        listAssignmentPartitionBrokers1.add(2);
        listAssignmentPartitionBrokers1.add(0);
        List<Integer> listAssignmentPartitionBrokers2 = new ArrayList<>();
        listAssignmentPartitionBrokers2.add(0);
        listAssignmentPartitionBrokers2.add(1);
        listAssignmentPartitionBrokers2.add(2);
        List<TopicAssignment> listReassignmentsAssignment = new ArrayList<>();
        listReassignmentsAssignment.add(
            new TopicAssignment()
                .withPartition(0)
                .withPartitionBrokers(listAssignmentPartitionBrokers2)
        );
        listReassignmentsAssignment.add(
            new TopicAssignment()
                .withPartition(1)
                .withPartitionBrokers(listAssignmentPartitionBrokers1)
        );
        listReassignmentsAssignment.add(
            new TopicAssignment()
                .withPartition(2)
                .withPartitionBrokers(listAssignmentPartitionBrokers)
        );
        List<Integer> listReassignmentsBrokers = new ArrayList<>();
        listReassignmentsBrokers.add(0);
        listReassignmentsBrokers.add(1);
        listReassignmentsBrokers.add(4);
        List<Integer> listAssignmentPartitionBrokers3 = new ArrayList<>();
        listAssignmentPartitionBrokers3.add(2);
        listAssignmentPartitionBrokers3.add(0);
        listAssignmentPartitionBrokers3.add(1);
        List<Integer> listAssignmentPartitionBrokers4 = new ArrayList<>();
        listAssignmentPartitionBrokers4.add(1);
        listAssignmentPartitionBrokers4.add(2);
        listAssignmentPartitionBrokers4.add(0);
        List<Integer> listAssignmentPartitionBrokers5 = new ArrayList<>();
        listAssignmentPartitionBrokers5.add(0);
        listAssignmentPartitionBrokers5.add(1);
        listAssignmentPartitionBrokers5.add(2);
        List<TopicAssignment> listReassignmentsAssignment1 = new ArrayList<>();
        listReassignmentsAssignment1.add(
            new TopicAssignment()
                .withPartition(0)
                .withPartitionBrokers(listAssignmentPartitionBrokers5)
        );
        listReassignmentsAssignment1.add(
            new TopicAssignment()
                .withPartition(1)
                .withPartitionBrokers(listAssignmentPartitionBrokers4)
        );
        listReassignmentsAssignment1.add(
            new TopicAssignment()
                .withPartition(2)
                .withPartitionBrokers(listAssignmentPartitionBrokers3)
        );
        List<Integer> listReassignmentsBrokers1 = new ArrayList<>();
        listReassignmentsBrokers1.add(0);
        listReassignmentsBrokers1.add(1);
        listReassignmentsBrokers1.add(2);
        List<PartitionReassignEntity> listbodyReassignments = new ArrayList<>();
        listbodyReassignments.add(
            new PartitionReassignEntity()
                .withTopic("topic-1513476102")
                .withBrokers(listReassignmentsBrokers1)
                .withReplicationFactor(3)
                .withAssignment(listReassignmentsAssignment1)
        );
        listbodyReassignments.add(
            new PartitionReassignEntity()
                .withTopic("topic-1513558717")
                .withBrokers(listReassignmentsBrokers)
                .withReplicationFactor(3)
                .withAssignment(listReassignmentsAssignment)
        );
        body.withTimeEstimate(false);
        body.withThrottle(10000000);
        body.withReassignments(listbodyReassignments);
        request.withBody(body);
        try {
            CreateReassignmentTaskResponse response = client.createReassignmentTask(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

Python

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# coding: utf-8

from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkkafka.v2.region.kafka_region import KafkaRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkkafka.v2 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = __import__('os').getenv("CLOUD_SDK_AK")
    sk = __import__('os').getenv("CLOUD_SDK_SK")
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId) \

    client = KafkaClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(KafkaRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = CreateReassignmentTaskRequest()
        request.instance_id = "{instance_id}"
        listPartitionBrokersAssignment = [
            2,
            0,
            1
        ]
        listPartitionBrokersAssignment1 = [
            1,
            2,
            0
        ]
        listPartitionBrokersAssignment2 = [
            0,
            1,
            2
        ]
        listAssignmentReassignments = [
            TopicAssignment(
                partition=0,
                partition_brokers=listPartitionBrokersAssignment2
            ),
            TopicAssignment(
                partition=1,
                partition_brokers=listPartitionBrokersAssignment1
            ),
            TopicAssignment(
                partition=2,
                partition_brokers=listPartitionBrokersAssignment
            )
        ]
        listBrokersReassignments = [
            0,
            1,
            4
        ]
        listPartitionBrokersAssignment3 = [
            2,
            0,
            1
        ]
        listPartitionBrokersAssignment4 = [
            1,
            2,
            0
        ]
        listPartitionBrokersAssignment5 = [
            0,
            1,
            2
        ]
        listAssignmentReassignments1 = [
            TopicAssignment(
                partition=0,
                partition_brokers=listPartitionBrokersAssignment5
            ),
            TopicAssignment(
                partition=1,
                partition_brokers=listPartitionBrokersAssignment4
            ),
            TopicAssignment(
                partition=2,
                partition_brokers=listPartitionBrokersAssignment3
            )
        ]
        listBrokersReassignments1 = [
            0,
            1,
            2
        ]
        listReassignmentsbody = [
            PartitionReassignEntity(
                topic="topic-1513476102",
                brokers=listBrokersReassignments1,
                replication_factor=3,
                assignment=listAssignmentReassignments1
            ),
            PartitionReassignEntity(
                topic="topic-1513558717",
                brokers=listBrokersReassignments,
                replication_factor=3,
                assignment=listAssignmentReassignments
            )
        ]
        request.body = PartitionReassignRequest(
            time_estimate=False,
            throttle=10000000,
            reassignments=listReassignmentsbody
        )
        response = client.create_reassignment_task(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

Go

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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    kafka "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")
    projectId := "{project_id}"

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := kafka.NewKafkaClient(
        kafka.KafkaClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.CreateReassignmentTaskRequest{}
	request.InstanceId = "{instance_id}"
	var listPartitionBrokersAssignment = []int32{
        int32(2),
	    int32(0),
	    int32(1),
    }
	var listPartitionBrokersAssignment1 = []int32{
        int32(1),
	    int32(2),
	    int32(0),
    }
	var listPartitionBrokersAssignment2 = []int32{
        int32(0),
	    int32(1),
	    int32(2),
    }
	partitionAssignment:= int32(0)
	partitionAssignment1:= int32(1)
	partitionAssignment2:= int32(2)
	var listAssignmentReassignments = []model.TopicAssignment{
        {
            Partition: &partitionAssignment,
            PartitionBrokers: &listPartitionBrokersAssignment2,
        },
        {
            Partition: &partitionAssignment1,
            PartitionBrokers: &listPartitionBrokersAssignment1,
        },
        {
            Partition: &partitionAssignment2,
            PartitionBrokers: &listPartitionBrokersAssignment,
        },
    }
	var listBrokersReassignments = []int32{
        int32(0),
	    int32(1),
	    int32(4),
    }
	var listPartitionBrokersAssignment3 = []int32{
        int32(2),
	    int32(0),
	    int32(1),
    }
	var listPartitionBrokersAssignment4 = []int32{
        int32(1),
	    int32(2),
	    int32(0),
    }
	var listPartitionBrokersAssignment5 = []int32{
        int32(0),
	    int32(1),
	    int32(2),
    }
	partitionAssignment3:= int32(0)
	partitionAssignment4:= int32(1)
	partitionAssignment5:= int32(2)
	var listAssignmentReassignments1 = []model.TopicAssignment{
        {
            Partition: &partitionAssignment3,
            PartitionBrokers: &listPartitionBrokersAssignment5,
        },
        {
            Partition: &partitionAssignment4,
            PartitionBrokers: &listPartitionBrokersAssignment4,
        },
        {
            Partition: &partitionAssignment5,
            PartitionBrokers: &listPartitionBrokersAssignment3,
        },
    }
	var listBrokersReassignments1 = []int32{
        int32(0),
	    int32(1),
	    int32(2),
    }
	replicationFactorReassignments:= int32(3)
	replicationFactorReassignments1:= int32(3)
	var listReassignmentsbody = []model.PartitionReassignEntity{
        {
            Topic: "topic-1513476102",
            Brokers: &listBrokersReassignments1,
            ReplicationFactor: &replicationFactorReassignments,
            Assignment: &listAssignmentReassignments1,
        },
        {
            Topic: "topic-1513558717",
            Brokers: &listBrokersReassignments,
            ReplicationFactor: &replicationFactorReassignments1,
            Assignment: &listAssignmentReassignments,
        },
    }
	timeEstimatePartitionReassignRequest:= false
	throttlePartitionReassignRequest:= int32(10000000)
	request.Body = &model.PartitionReassignRequest{
		TimeEstimate: &timeEstimatePartitionReassignRequest,
		Throttle: &throttlePartitionReassignRequest,
		Reassignments: listReassignmentsbody,
	}
	response, err := client.CreateReassignmentTask(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

Mais

Para obter o código de exemplo do SDK de mais linguagens de programação, consulte a guia Código de exemplo no API Explorer. O código de exemplo do SDK pode ser gerado automaticamente.

Códigos de status

Código de status

Descrição

200

Tarefa de rebalanceamento enviada ou o tempo estimado é retornado.

Códigos de erro

Consulte Códigos de erro.

Tópico principal: Gerenciamento de instâncias