Example usage for com.amazonaws.services.dynamodbv2 AmazonDynamoDBClient listTables

Introduction

In this page you can find the example usage for com.amazonaws.services.dynamodbv2 AmazonDynamoDBClient listTables.

Prototype

@Override
    public ListTablesResult listTables(Integer limit) 

Source Link

Usage

From source file:dynamok.source.DynamoDbSourceConnector.java

License:Apache License

@Override
public void start(Map<String, String> props) {
    config = new ConnectorConfig(props);
    streamShards = new HashMap<>();

    final AmazonDynamoDBClient client;
    final AmazonDynamoDBStreamsClient streamsClient;

    if (config.accessKeyId.value().isEmpty() || config.secretKeyId.value().isEmpty()) {
        client = new AmazonDynamoDBClient();
        streamsClient = new AmazonDynamoDBStreamsClient();
        log.debug("AmazonDynamoDB clients created with default credentials");
    } else {//from  w  ww  .j a v a 2s  .c o m
        BasicAWSCredentials awsCreds = new BasicAWSCredentials(config.accessKeyId.value(),
                config.secretKeyId.value());
        client = new AmazonDynamoDBClient(awsCreds);
        streamsClient = new AmazonDynamoDBStreamsClient(awsCreds);
        log.debug("AmazonDynamoDB clients created with AWS credentials from connector configuration");
    }

    client.configureRegion(config.region);
    streamsClient.configureRegion(config.region);

    final Set<String> ignoredTables = new HashSet<>();
    final Set<String> consumeTables = new HashSet<>();

    String lastEvaluatedTableName = null;
    do {
        final ListTablesResult listResult = client.listTables(lastEvaluatedTableName);

        for (String tableName : listResult.getTableNames()) {
            if (!acceptTable(tableName)) {
                ignoredTables.add(tableName);
                continue;
            }

            final TableDescription tableDesc = client.describeTable(tableName).getTable();

            final StreamSpecification streamSpec = tableDesc.getStreamSpecification();

            if (streamSpec == null || !streamSpec.isStreamEnabled()) {
                throw new ConnectException(
                        String.format("DynamoDB table `%s` does not have streams enabled", tableName));
            }

            final String streamViewType = streamSpec.getStreamViewType();
            if (!streamViewType.equals(StreamViewType.NEW_IMAGE.name())
                    && !streamViewType.equals(StreamViewType.NEW_AND_OLD_IMAGES.name())) {
                throw new ConnectException(String.format("DynamoDB stream view type for table `%s` is %s",
                        tableName, streamViewType));
            }

            final DescribeStreamResult describeStreamResult = streamsClient
                    .describeStream(new DescribeStreamRequest().withStreamArn(tableDesc.getLatestStreamArn()));

            for (Shard shard : describeStreamResult.getStreamDescription().getShards()) {
                streamShards.put(shard, tableDesc);
            }

            consumeTables.add(tableName);
        }

        lastEvaluatedTableName = listResult.getLastEvaluatedTableName();
    } while (lastEvaluatedTableName != null);

    log.info("Tables to ignore: {}", ignoredTables);
    log.info("Tables to ingest: {}", consumeTables);

    client.shutdown();
    streamsClient.shutdown();
}

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From source file:io.exemplary.aws.DynamoDBServer.java

License:Apache License

private void deleteAllTables() {
    AmazonDynamoDBClient client = new AmazonDynamoDBClient(new BasicAWSCredentials("accessKey", "secretKey"));
    client.setEndpoint(getEndpoint());/*  ww w  . ja v  a  2s. c  om*/
    ListTablesResult result = client.listTables(new ListTablesRequest());
    for (String tableName : result.getTableNames()) {
        client.deleteTable(new DeleteTableRequest(tableName));
    }
    client.shutdown();
}

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