2.6 Kafka Admin API之查看主题配置信息

原创

wx63560c7d74933 2022-10-24 19:18:55 博主文章分类：从头开始学Kafka ©著作权

文章标签 kafka java 配置信息代码示例 bootstrap 文章分类 运维

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1.代码示例

public class AdminSample {
    private static final String topicName = "steven";

    private static final int partitionNumber = 1;

    private static final Short replicationFactor = 1;

    /**
     * 创建AdminClient
     */
    public static AdminClient adminClient() {
        Properties properties = new Properties();
        properties.setProperty(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, "127.0.0.1:9092");
        AdminClient adminClient = AdminClient.create(properties);
        return adminClient;
    }

    /**
     * topic配置信息查看
     */
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        AdminClient adminClient = AdminSample.adminClient();
        ConfigResource configResource = new ConfigResource(ConfigResource.Type.TOPIC, topicName);
        DescribeConfigsResult describeConfigsResult = adminClient.describeConfigs(Arrays.asList(configResource));
        Map<ConfigResource, Config> configResourceConfigMap = describeConfigsResult.all().get();
        configResourceConfigMap.entrySet().stream().forEach((entry) -> {
            System.out.println("configResource:" + entry.getKey() + ",Config:" + entry.getValue());
        });
    }
}

2.代码运行结果

configResource:ConfigResource(type=TOPIC, name='steven'),
Config:Config(
        entries=[
               ConfigEntry(name=compression.type, value=producer, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]),
             ConfigEntry(name=message.format.version, value=1.1-IV0, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=file.delete.delay.ms, value=60000, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=leader.replication.throttled.replicas, value=, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=max.message.bytes, value=1000012, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=min.compaction.lag.ms, value=0, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=message.timestamp.type, value=CreateTime, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
               ConfigEntry(name=min.insync.replicas, value=1, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=segment.jitter.ms, value=0, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=preallocate, value=false, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=min.cleanable.dirty.ratio, value=0.5, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=index.interval.bytes, value=4096, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=unclean.leader.election.enable, value=false, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=retention.bytes, value=-1, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=delete.retention.ms, value=86400000, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=cleanup.policy, value=delete, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=flush.ms, value=9223372036854775807, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=follower.replication.throttled.replicas, value=, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=segment.ms, value=604800000, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=segment.bytes, value=1073741824, source=STATIC_BROKER_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=retention.ms, value=604800000, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=message.timestamp.difference.max.ms, value=9223372036854775807, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=segment.index.bytes, value=10485760, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[]), 
             ConfigEntry(name=flush.messages, value=9223372036854775807, source=DEFAULT_CONFIG, isSensitive=false, isReadOnly=false, synonyms=[])
             ]
        )