Example usage for com.amazonaws.services.dynamodbv2.datamodeling DynamoDBMapper generateCreateTableRequest

Introduction

In this page you can find the example usage for com.amazonaws.services.dynamodbv2.datamodeling DynamoDBMapper generateCreateTableRequest.

Prototype

@Override
    public CreateTableRequest generateCreateTableRequest(Class<?> clazz) 

Source Link

Usage

From source file:org.openhab.persistence.dynamodb.internal.DynamoDBPersistenceService.java

License:Open Source License

/**
 * Create table (if not present) and wait for table to become active.
 *
 * Synchronized in order to ensure that at most single thread is creating the table at a time
 *
 * @param mapper/*from w w  w. j  ava  2  s .  c  o  m*/
 * @param dtoClass
 * @return whether table creation succeeded.
 */
private synchronized boolean createTable(DynamoDBMapper mapper, Class<?> dtoClass) {
    if (db == null) {
        return false;
    }
    String tableName;
    try {
        ProvisionedThroughput provisionedThroughput = new ProvisionedThroughput(dbConfig.getReadCapacityUnits(),
                dbConfig.getWriteCapacityUnits());
        CreateTableRequest request = mapper.generateCreateTableRequest(dtoClass);
        request.setProvisionedThroughput(provisionedThroughput);
        if (request.getGlobalSecondaryIndexes() != null) {
            for (GlobalSecondaryIndex index : request.getGlobalSecondaryIndexes()) {
                index.setProvisionedThroughput(provisionedThroughput);
            }
        }
        tableName = request.getTableName();
        try {
            db.getDynamoClient().describeTable(tableName);
        } catch (ResourceNotFoundException e) {
            // No table present, continue with creation
            db.getDynamoClient().createTable(request);
        } catch (AmazonClientException e) {
            logger.error("Table creation failed due to error in describeTable operation", e);
            return false;
        }

        // table found or just created, wait
        return waitForTableToBecomeActive(tableName);

    } catch (AmazonClientException e) {
        logger.error("Exception when creating table", e);
        return false;
    }

}

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