@Experimental(value=SOURCE_SINK) public class SqsIO extends java.lang.Object
SqsIO.Read returns an unbounded PCollection of SqsMessages. As minimum
configuration you have to provide the queue url to connect to using SqsIO.Read.withQueueUrl(String).
Example usage:
PCollection<SqsMessage> output =
pipeline.apply(SqsIO.read().withQueueUrl(queueUrl))
Note: Currently this source does not advance watermarks when no new messages are received.
SqsIO.Write takes a PCollection of SendMessageRequests as input. Each
request must contain the queue url. No further configuration is required.
Example usage:
PCollection<SendMessageRequest> data = ...;
data.apply(SqsIO.write())
AWS clients for all AWS IOs can be configured using AwsOptions, e.g. --awsRegion=us-west-1. AwsOptions contain reasonable defaults based on default providers
for Region and AwsCredentialsProvider.
If you require more advanced configuration, you may change the ClientBuilderFactory
using AwsOptions.setClientBuilderFactory(Class).
Configuration for a specific IO can be overwritten using withClientConfiguration(),
which also allows to configure the retry behavior for the respective IO.
Retries for failed requests can be configured using ClientConfiguration.Builder#retry(Consumer) and are handled by the AWS SDK unless there's a
partial success (batch requests). The SDK uses a backoff strategy with equal jitter for computing
the delay before the next retry.
Note: Once retries are exhausted the error is surfaced to the runner which may then opt to retry the current partition in entirety or abort if the max number of retries of the runner is reached.
| Modifier and Type | Class and Description |
|---|---|
static class |
SqsIO.Read
A
PTransform to read/receive messages from SQS. |
static class |
SqsIO.Write
A
PTransform to send messages to SQS. |
| Modifier and Type | Method and Description |
|---|---|
static SqsIO.Read |
read() |
static SqsIO.Write |
write() |
public static SqsIO.Read read()
public static SqsIO.Write write()