Java DescribeTableResult类代码示例

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
@Test
public void testCreateTableWithWait() throws Exception {
    // Create fake responses from AWS. First response is still creating the table, second response the table
    // has become active.
    TableDescription creatingDescription = constructTableDescription(TableStatus.CREATING);
    TableDescription createdDescription = constructTableDescription(TableStatus.ACTIVE);
    CreateTableResult mockCreateResult = new CreateTableResult().withTableDescription(creatingDescription);
    DescribeTableResult mockDescribeResultCreating = new DescribeTableResult().withTable(creatingDescription);
    DescribeTableResult mockDescribeResultCreated = new DescribeTableResult().withTable(createdDescription);

    // Create the table.
    CreateTableRequest expectedRequest = dynamoDB.constructCreateTableRequest();
    when(mockDynamoDBClient.createTable(expectedRequest)).thenReturn(mockCreateResult);
    when(mockDynamoDBClient.describeTable(tableName)).thenReturn(mockDescribeResultCreating, mockDescribeResultCreated);
    assertEquals(dynamoDB.create(), TEST_ARN);

    verify(mockDynamoDBClient, times(1)).createTable(expectedRequest);
    verify(mockDynamoDBClient, times(2)).describeTable(tableName);
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
private static Task<TableDescription> waitForActiveTableStatus(final DynamoDBConnection dynamoDBConnection, final String tableName)
{
    try
    {
        for (int i = 0; i < WAITING_FOR_ACTIVE_TABLE_STATUS_MAX_ATTEMPTS; i++)
        {
            final DescribeTableResult describe = dynamoDBConnection.getDynamoClient().describeTable(tableName);
            if (describe.getTable().getTableStatus().equals(TableStatus.ACTIVE.name()))
            {
                return Task.fromValue(describe.getTable());
            }

            Thread.sleep(WAITING_FOR_ACTIVE_TABLE_STATUS_RETRY_DELAY_MILLIS);
        }

    }
    catch (InterruptedException e)
    {
        throw new UncheckedException(e);
    }

    throw new UncheckedException("Hit max retry attempts while waiting for table to become active: " + tableName);
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
private void ensureTableIsActive(final String tableName)
{
    try
    {
        while (true)
        {
            final DescribeTableResult describe = dynamoDBConnection.getDynamoClient().describeTable(tableName);
            if (describe.getTable().getTableStatus().equals(TableStatus.ACTIVE.name()))
            {
                return;
            }

            Thread.sleep(500);
        }

    }
    catch (InterruptedException e)
    {
        throw new UncheckedException(e);
    }
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
public TableDescription describeTable(String tableName) {
  final DescribeTableRequest describeTablesRequest = new DescribeTableRequest()
      .withTableName(tableName);
  try {
    RetryResult<DescribeTableResult> describeResult = getRetryDriver().runWithRetry(
        new Callable<DescribeTableResult>() {
          @Override
          public DescribeTableResult call() {
            DescribeTableResult result = dynamoDB.describeTable(describeTablesRequest);
            log.info("Describe table output: " + result);
            return result;
          }
        }, null, null);
    return describeResult.result.getTable();
  } catch (Exception e) {
    throw new RuntimeException("Could not lookup table " + tableName + " in DynamoDB.", e);
  }
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
@Override
public void execute() {
    DescribeTableResult result = ddbClient.describeTable(new DescribeTableRequest()
            .withTableName(determineTableName()));

    Message msg = getMessageForResponse(exchange);
    msg.setHeader(DdbConstants.TABLE_NAME, result.getTable().getTableName());
    msg.setHeader(DdbConstants.TABLE_STATUS, result.getTable().getTableStatus());
    msg.setHeader(DdbConstants.CREATION_DATE, result.getTable().getCreationDateTime());
    msg.setHeader(DdbConstants.ITEM_COUNT, result.getTable().getItemCount());
    msg.setHeader(DdbConstants.KEY_SCHEMA, result.getTable().getKeySchema());
    msg.setHeader(DdbConstants.READ_CAPACITY,
            result.getTable().getProvisionedThroughput().getReadCapacityUnits());
    msg.setHeader(DdbConstants.WRITE_CAPACITY,
            result.getTable().getProvisionedThroughput().getWriteCapacityUnits());
    msg.setHeader(DdbConstants.TABLE_SIZE, result.getTable().getTableSizeBytes());
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
@Override
public DescribeTableResult describeTable(DescribeTableRequest describeTableRequest) {
    this.describeTableRequest = describeTableRequest;
    String tableName = describeTableRequest.getTableName();
    if ("activeTable".equals(tableName)) {
        return tableWithStatus(TableStatus.ACTIVE);
    } else if ("creatibleTable".equals(tableName) && createTableRequest != null) {
        return tableWithStatus(TableStatus.ACTIVE);
    } else if ("FULL_DESCRIBE_TABLE".equals(tableName)) {
        return new DescribeTableResult().withTable(new TableDescription()
                .withTableName(tableName)
                .withTableStatus(TableStatus.ACTIVE)
                .withCreationDateTime(new Date(NOW))
                .withItemCount(100L)
                .withKeySchema(new KeySchemaElement().withAttributeName("name"))
                .withProvisionedThroughput(new ProvisionedThroughputDescription()
                        .withReadCapacityUnits(20L)
                        .withWriteCapacityUnits(10L))
                .withTableSizeBytes(1000L));
    }
    throw new ResourceNotFoundException(tableName + " is missing");
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
private String enableStreamForTable(AmazonDynamoDBClient client, StreamViewType viewType, String tableName) {
    DescribeTableRequest describeTableRequest = new DescribeTableRequest()
        .withTableName(tableName);
    DescribeTableResult describeResult = client.describeTable(describeTableRequest);
    if (describeResult.getTable().getStreamSpecification().isStreamEnabled()) {
        //TODO: what if the viewtype doesn't match
        return describeResult.getTable().getLatestStreamId();
    }

    StreamSpecification streamSpecification = new StreamSpecification();
    streamSpecification.setStreamEnabled(true);
    streamSpecification.setStreamViewType(viewType);
    UpdateTableRequest updateTableRequest = new UpdateTableRequest()
        .withTableName(tableName)
        .withStreamSpecification(streamSpecification);

    UpdateTableResult result = client.updateTable(updateTableRequest);
    return result.getTableDescription().getLatestStreamId();
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
public static String enableStreamForTable(AmazonDynamoDBClient client, StreamViewType viewType, String tableName) {
    DescribeTableRequest describeTableRequest = new DescribeTableRequest()
        .withTableName(tableName);
    DescribeTableResult describeResult = client.describeTable(describeTableRequest);
    if (describeResult.getTable().getStreamSpecification().isStreamEnabled()) {
        //TODO: what if the viewtype doesn't match
        return describeResult.getTable().getLatestStreamId();
    }

    StreamSpecification streamSpecification = new StreamSpecification();
    streamSpecification.setStreamEnabled(true);
    streamSpecification.setStreamViewType(viewType);
    UpdateTableRequest updateTableRequest = new UpdateTableRequest()
        .withTableName(tableName)
        .withStreamSpecification(streamSpecification);

    UpdateTableResult result = client.updateTable(updateTableRequest);
    return result.getTableDescription().getLatestStreamId();
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
public static void awaitTableCreation(AmazonDynamoDBClient dynamoDBClient, String tableName) {
    Integer retries = 0;
    Boolean created = false;
    while(!created && retries < 100) {
        DescribeTableResult result = StreamAdapterDemoHelper.describeTable(dynamoDBClient, tableName);
        created = result.getTable().getTableStatus().equals("ACTIVE");
        if (created) {
            System.out.println("Table is active.");
            return;
        } else {
            retries++;
            try {
                Thread.sleep(1000);
            } catch(InterruptedException e) {
                // do nothing
            }
        }
    }
    System.out.println("Timeout after table creation. Exiting...");
    cleanupAndExit(dynamoDBClient, tableName, 1);
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
@Test
public void test_updateTable() throws Exception {
  createTable();

  DescribeTableResult describeResult = dynamoDb.describeTable(TEST_TABLE_NAME);
  Long readUnits = describeResult.getTable().getProvisionedThroughput().getReadCapacityUnits();

  assertThat(readUnits, equalTo(UNITS));

  UpdateTableResult updateResult = dynamoDb.updateTable(TEST_TABLE_NAME, new ProvisionedThroughput()
    .withReadCapacityUnits(new Long(200))
    .withWriteCapacityUnits(new Long(200)));
  String tableName = updateResult.getTableDescription().getTableName();

  assertThat(tableName, equalTo(TEST_TABLE_NAME));

  ListTablesResult listResult = listTables();

  describeResult = dynamoDb.describeTable(TEST_TABLE_NAME);
  readUnits = describeResult.getTable().getProvisionedThroughput().getReadCapacityUnits();

  assertThat(readUnits, equalTo(new Long(200)));
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
/**
 * Private interface for describing tables which handles any instances of
 * Throttling of the API
 * 
 * @param dynamoClient
 * @param dynamoTable
 * @return
 * @throws Exception
 */
public static DescribeTableResult safeDescribeTable(
		final AmazonDynamoDB dynamoClient, final String dynamoTable)
		throws Exception {
	DescribeTableResult res = null;
	final int tryMax = 10;
	int tries = 0;
	while (true) {
		try {
			res = dynamoClient.describeTable(dynamoTable);

			return res;
		} catch (ResourceNotFoundException e) {
			if (tries < tryMax) {
				// sleep for a short time as this is potentially an eventual
				// consistency issue with the table having been created ms
				// ago
				Thread.sleep(10);
				tries++;
			} else {
				throw e;
			}
		}
	}
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
/**
 * Interface which will block until a dynamo table reaches a specified
 * state. Also returns immediately if the object doesn't exist
 * 
 * @param dynamoClient
 *            Dynamo DB Client to use for connection to Dynamo DB.
 * @param dynamoTable
 *            The table name to check.
 * @param status
 *            The status to wait for
 * @throws Exception
 */
private static void waitForTableState(final AmazonDynamoDB dynamoClient,
		final String dynamoTable, TableStatus status) throws Exception {
	DescribeTableResult tableRequest = null;
	while (true) {
		try {
			tableRequest = dynamoClient.describeTable(dynamoTable);
			if (tableRequest.getTable().getTableStatus()
					.equals(status.name()))
				break;

			Thread.sleep(1000);
		} catch (InterruptedException e) {
			return;
		}
	}
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
private static void awaitTableCreation(String tableName) {
    Integer retries = 0;
    Boolean created = false;
    while(!created && retries < 100) {
        DescribeTableResult result = StreamsAdapterDemoHelper.describeTable(dynamoDBClient, tableName);
        created = result.getTable().getTableStatus().equals("ACTIVE");
        if (created) {
            System.out.println("Table is active.");
            return;
        } else {
            retries++;
            try {
                Thread.sleep(1000);
            } catch(InterruptedException e) {
                // do nothing
            }
        }
    }
    System.out.println("Timeout after table creation. Exiting...");
    cleanupAndExit(1);
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
/**
 * Create table.
 * @throws InterruptedException If something fails
 */
public void create() throws InterruptedException {
    final AmazonDynamoDB aws = this.region.aws();
    final String name = this.request.getTableName();
    aws.createTable(this.request);
    Logger.info(this, "DynamoDB table '%s' creation requested...", name);
    final DescribeTableRequest req = new DescribeTableRequest()
        .withTableName(name);
    while (true) {
        final DescribeTableResult result = aws.describeTable(req);
        if ("ACTIVE".equals(result.getTable().getTableStatus())) {
            Logger.info(
                this,
                "DynamoDB table '%s' is %s",
                name, result.getTable().getTableStatus()
            );
            break;
        }
        Logger.info(
            this,
            "waiting for DynamoDB table '%s': %s",
            name, result.getTable().getTableStatus()
        );
        TimeUnit.SECONDS.sleep((long) Tv.TEN);
    }
}
 

import com.amazonaws.services.dynamodbv2.model.DescribeTableResult; //导入依赖的package包/类
public static String getTestTableStatus() {

        try {
            AmazonDynamoDBClient ddb = UserPreferenceDemoActivity.clientManager
                    .ddb();

            DescribeTableRequest request = new DescribeTableRequest()
                    .withTableName(Constants.TEST_TABLE_NAME);
            DescribeTableResult result = ddb.describeTable(request);

            String status = result.getTable().getTableStatus();
            return status == null ? "" : status;

        } catch (ResourceNotFoundException e) {
        } catch (AmazonServiceException ex) {
            UserPreferenceDemoActivity.clientManager
                    .wipeCredentialsOnAuthError(ex);
        }

        return "";
    }