2014/12/04 - Amazon Kinesis - 1 new api methods
Puts (writes) multiple data records from a producer into an Amazon Kinesis stream in a single call (also referred to as a PutRecords request). Use this operation to send data from a data producer into the Amazon Kinesis stream for real-time ingestion and processing. Each shard can support up to 1000 records written per second, up to a maximum total of 1 MB data written per second.
You must specify the name of the stream that captures, stores, and transports the data; and an array of request Records , with each record in the array requiring a partition key and data blob.
The data blob can be any type of data; for example, a segment from a log file, geographic/location data, website clickstream data, and so on.
The partition key is used by Amazon Kinesis as input to a hash function that maps the partition key and associated data to a specific shard. An MD5 hash function is used to map partition keys to 128-bit integer values and to map associated data records to shards. As a result of this hashing mechanism, all data records with the same partition key map to the same shard within the stream. For more information, see Partition Key in the Amazon Kinesis Developer Guide .
Each record in the Records array may include an optional parameter, ExplicitHashKey , which overrides the partition key to shard mapping. This parameter allows a data producer to determine explicitly the shard where the record is stored. For more information, see Adding Multiple Records with PutRecords in the Amazon Kinesis Developer Guide .
The PutRecords response includes an array of response Records . Each record in the response array directly correlates with a record in the request array using natural ordering, from the top to the bottom of the request and response. The response Records array always includes the same number of records as the request array.
The response Records array includes both successfully and unsuccessfully processed records. Amazon Kinesis attempts to process all records in each PutRecords request. A single record failure does not stop the processing of subsequent records.
A successfully-processed record includes ShardId and SequenceNumber values. The ShardId parameter identifies the shard in the stream where the record is stored. The SequenceNumber parameter is an identifier assigned to the put record, unique to all records in the stream.
An unsuccessfully-processed record includes ErrorCode and ErrorMessage values. ErrorCode reflects the type of error and can be one of the following values: ProvisionedThroughputExceededException or InternalFailure . ErrorMessage provides more detailed information about the ProvisionedThroughputExceededException exception including the account ID, stream name, and shard ID of the record that was throttled.
Data records are accessible for only 24 hours from the time that they are added to an Amazon Kinesis stream.
Request Syntax
client.put_records(
Records=[
{
'Data': b'bytes',
'ExplicitHashKey': 'string',
'PartitionKey': 'string'
},
],
StreamName='string'
)
list
[REQUIRED]
The records associated with the request.
(dict) --
Represents the output for PutRecords .
Data (bytes) -- [REQUIRED]
The data blob to put into the record, which is base64-encoded when the blob is serialized. The maximum size of the data blob (the payload before base64-encoding) is 50 kilobytes (KB)
ExplicitHashKey (string) --
The hash value used to determine explicitly the shard that the data record is assigned to by overriding the partition key hash.
PartitionKey (string) -- [REQUIRED]
Determines which shard in the stream the data record is assigned to. Partition keys are Unicode strings with a maximum length limit of 256 bytes. Amazon Kinesis uses the partition key as input to a hash function that maps the partition key and associated data to a specific shard. Specifically, an MD5 hash function is used to map partition keys to 128-bit integer values and to map associated data records to shards. As a result of this hashing mechanism, all data records with the same partition key map to the same shard within the stream.
string
[REQUIRED]
The stream name associated with the request.
dict
Response Syntax
{
'FailedRecordCount': 123,
'Records': [
{
'SequenceNumber': 'string',
'ShardId': 'string',
'ErrorCode': 'string',
'ErrorMessage': 'string'
},
]
}
Response Structure
(dict) --
PutRecords results.
FailedRecordCount (integer) --
The number of unsuccessfully processed records in a PutRecords request.
Records (list) --
An array of successfully and unsuccessfully processed record results, correlated with the request by natural ordering. A record that is successfully added to your Amazon Kinesis stream includes SequenceNumber and ShardId in the result. A record that fails to be added to your Amazon Kinesis stream includes ErrorCode and ErrorMessage in the result.
(dict) --
Represents the result of an individual record from a PutRecords request. A record that is successfully added to your Amazon Kinesis stream includes SequenceNumber and ShardId in the result. A record that fails to be added to your Amazon Kinesis stream includes ErrorCode and ErrorMessage in the result.
SequenceNumber (string) --
The sequence number for an individual record result.
ShardId (string) --
The shard ID for an individual record result.
ErrorCode (string) --
The error code for an individual record result. ErrorCodes can be either ProvisionedThroughputExceededException or InternalFailure .
ErrorMessage (string) --
The error message for an individual record result. An ErrorCode value of ProvisionedThroughputExceededException has an error message that includes the account ID, stream name, and shard ID. An ErrorCode value of InternalFailure has the error message "Internal Service Failure" .