Utilizzare DescribeStream con un SDK AWS o una CLI

Come descrivere un flusso di dati

L’esempio describe-stream seguente restituisce i dettagli del flusso di dati specificato.

aws kinesis describe-stream \
    --stream-name samplestream

Output:

{
    "StreamDescription": {
        "Shards": [
            {
                "ShardId": "shardId-000000000000",
                "HashKeyRange": {
                    "StartingHashKey": "0",
                    "EndingHashKey": "113427455640312821154458202477256070484"
                },
                "SequenceNumberRange": {
                    "StartingSequenceNumber": "49600871682957036442365024926191073437251060580128653314"
                }
            },
            {
                "ShardId": "shardId-000000000001",
                "HashKeyRange": {
                    "StartingHashKey": "113427455640312821154458202477256070485",
                    "EndingHashKey": "226854911280625642308916404954512140969"
                },
                "SequenceNumberRange": {
                    "StartingSequenceNumber": "49600871682979337187563555549332609155523708941634633746"
                }
            },
            {
                "ShardId": "shardId-000000000002",
                "HashKeyRange": {
                    "StartingHashKey": "226854911280625642308916404954512140970",
                    "EndingHashKey": "340282366920938463463374607431768211455"
                },
                "SequenceNumberRange": {
                    "StartingSequenceNumber": "49600871683001637932762086172474144873796357303140614178"
                }
            }
        ],
        "StreamARN": "arn:aws:kinesis:us-west-2:123456789012:stream/samplestream",
        "StreamName": "samplestream",
        "StreamStatus": "ACTIVE",
        "RetentionPeriodHours": 24,
        "EnhancedMonitoring": [
            {
                "ShardLevelMetrics": []
            }
        ],
        "EncryptionType": "NONE",
        "KeyId": null,
        "StreamCreationTimestamp": 1572297168.0
    }
}

Per ulteriori informazioni, consulta Creazione e gestione dei flussi nella Guida per gli sviluppatori di Flusso di dati Amazon Kinesis.

Esempio 1: restituisce i dettagli del flusso specificato.

Get-KINStream -StreamName "mystream"

Output:

HasMoreShards        : False
RetentionPeriodHours : 24
Shards               : {}
StreamARN            : arn:aws:kinesis:us-west-2:123456789012:stream/mystream
StreamName           : mystream
StreamStatus         : ACTIVE

Esempio 1: restituisce i dettagli del flusso specificato.

Get-KINStream -StreamName "mystream"

Output:

HasMoreShards        : False
RetentionPeriodHours : 24
Shards               : {}
StreamARN            : arn:aws:kinesis:us-west-2:123456789012:stream/mystream
StreamName           : mystream
StreamStatus         : ACTIVE

class KinesisStream:
    """Encapsulates a Kinesis stream."""

    def __init__(self, kinesis_client):
        """
        :param kinesis_client: A Boto3 Kinesis client.
        """
        self.kinesis_client = kinesis_client
        self.name = None
        self.details = None
        self.stream_exists_waiter = kinesis_client.get_waiter("stream_exists")


    def describe(self, name):
        """
        Gets metadata about a stream.

        :param name: The name of the stream.
        :return: Metadata about the stream.
        """
        try:
            response = self.kinesis_client.describe_stream(StreamName=name)
            self.name = name
            self.details = response["StreamDescription"]
            logger.info("Got stream %s.", name)
        except ClientError:
            logger.exception("Couldn't get %s.", name)
            raise
        else:
            return self.details

async fn show_stream(client: &Client, stream: &str) -> Result<(), Error> {
    let resp = client.describe_stream().stream_name(stream).send().await?;

    let desc = resp.stream_description.unwrap();

    println!("Stream description:");
    println!("  Name:              {}:", desc.stream_name());
    println!("  Status:            {:?}", desc.stream_status());
    println!("  Open shards:       {:?}", desc.shards.len());
    println!("  Retention (hours): {}", desc.retention_period_hours());
    println!("  Encryption:        {:?}", desc.encryption_type.unwrap());

    Ok(())
}

    TRY.
        oo_result = lo_kns->describestream(
            iv_streamname = iv_stream_name ).
        DATA(lt_stream_description) = oo_result->get_streamdescription( ).
        MESSAGE 'Streams retrieved.' TYPE 'I'.
      CATCH /aws1/cx_knslimitexceededex.
        MESSAGE 'The request processing has failed because of a limit exceed exception.' TYPE 'E'.
      CATCH /aws1/cx_knsresourcenotfoundex.
        MESSAGE 'Resource being accessed is not found.' TYPE 'E'.
    ENDTRY.