本文整理汇总了Java中com.amazonaws.services.dynamodbv2.model.DescribeStreamRequest类的典型用法代码示例。如果您正苦于以下问题：Java DescribeStreamRequest类的具体用法？Java DescribeStreamRequest怎么用？Java DescribeStreamRequest使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
DescribeStreamRequest类属于com.amazonaws.services.dynamodbv2.model包，在下文中一共展示了DescribeStreamRequest类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getShardIterator
import com.amazonaws.services.dynamodbv2.model.DescribeStreamRequest; //导入依赖的package包/类
String getShardIterator(String resumeFromSequenceNumber) {
ShardIteratorType iteratorType = getEndpoint().getIteratorType();
String sequenceNumber = getEndpoint().getSequenceNumber();
if (resumeFromSequenceNumber != null) {
// Reset things as we're in an error condition.
currentShard = null;
currentShardIterator = null;
iteratorType = ShardIteratorType.AFTER_SEQUENCE_NUMBER;
sequenceNumber = resumeFromSequenceNumber;
}
// either return a cached one or get a new one via a GetShardIterator request.
if (currentShardIterator == null) {
ListStreamsResult streamsListResult = getClient().listStreams(
new ListStreamsRequest().withTableName(getEndpoint().getTableName())
);
final String streamArn = streamsListResult.getStreams().get(0).getStreamArn(); // XXX assumes there is only one stream
DescribeStreamResult streamDescriptionResult = getClient().describeStream(
new DescribeStreamRequest().withStreamArn(streamArn)
);
shardList.addAll(streamDescriptionResult.getStreamDescription().getShards());
LOG.trace("Current shard is: {} (in {})", currentShard, shardList);
if (currentShard == null) {
currentShard = resolveNewShard(iteratorType, resumeFromSequenceNumber);
} else {
currentShard = shardList.nextAfter(currentShard);
}
shardList.removeOlderThan(currentShard);
LOG.trace("Next shard is: {} (in {})", currentShard, shardList);
GetShardIteratorResult result = getClient().getShardIterator(
buildGetShardIteratorRequest(streamArn, iteratorType, sequenceNumber)
);
currentShardIterator = result.getShardIterator();
}
LOG.trace("Shard Iterator is: {}", currentShardIterator);
return currentShardIterator;
}
示例2: setup
import com.amazonaws.services.dynamodbv2.model.DescribeStreamRequest; //导入依赖的package包/类
@Before
public void setup() throws Exception {
endpoint.setAmazonDynamoDbStreamsClient(amazonDynamoDBStreams);
undertest = new ShardIteratorHandler(endpoint);
when(amazonDynamoDBStreams.listStreams(any(ListStreamsRequest.class))).thenReturn(
new ListStreamsResult()
.withStreams(new Stream()
.withStreamArn("arn:aws:dynamodb:region:12345:table/table_name/stream/timestamp")
)
);
when(amazonDynamoDBStreams.describeStream(any(DescribeStreamRequest.class))).thenReturn(
new DescribeStreamResult()
.withStreamDescription(
new StreamDescription()
.withTableName("table_name")
.withShards(
ShardListTest.createShardsWithSequenceNumbers(null,
"a", "1", "5",
"b", "8", "15",
"c", "16", "16",
"d", "20", null
)
)
)
);
when(amazonDynamoDBStreams.getShardIterator(any(GetShardIteratorRequest.class))).thenAnswer(new Answer<GetShardIteratorResult>() {
@Override
public GetShardIteratorResult answer(InvocationOnMock invocation) throws Throwable {
return new GetShardIteratorResult()
.withShardIterator("shard_iterator_"
+ ((GetShardIteratorRequest) invocation.getArguments()[0]).getShardId()
+ "_000");
}
});
}