Examples of com.amazonaws.services.dynamodbv2.model.BatchWriteItemResult

Package com.amazonaws.services.dynamodbv2.model

Examples of com.amazonaws.services.dynamodbv2.model.BatchWriteItemResult

com.amazonaws.services.dynamodbv2.model.DeleteItemRequest

Represents the output of a BatchWriteItem operation.

    @Test
    public void batchWriteItemWithDeletionsTest() throws Exception{
        this.vanillaBatchWriteItemTest();


        BatchWriteItemRequest batchWriteItemRequest = new BatchWriteItemRequest();
        BatchWriteItemResult result;


        // Create a map for the requests in the batch
        Map<String, List<WriteRequest>> requestItems = new HashMap<String, List<WriteRequest>>();


        // Test: delete some items from database
        List<WriteRequest> forumList = new ArrayList<WriteRequest>();


        //Test case: Delete Requests
        Map<String, AttributeValue> forumKey3c =
            createItemKey(
                hashKeyName1, new AttributeValue().withN("3"),
                "range", new AttributeValue().withS("c"));


        Map<String, AttributeValue> forumKey5e =
            createItemKey(
                hashKeyName1, new AttributeValue().withN("5"),
                "range", new AttributeValue().withS("e"));


        Map<String, AttributeValue> forumKey6f =
            createItemKey(
                hashKeyName1, new AttributeValue().withN("6"),
                "range", new AttributeValue().withS("f"));


        forumList.add(new WriteRequest().withDeleteRequest(new DeleteRequest().withKey(forumKey3c)));
        forumList.add(new WriteRequest().withDeleteRequest(new DeleteRequest().withKey(forumKey5e)));
        forumList.add(new WriteRequest().withDeleteRequest(new DeleteRequest().withKey(forumKey6f)));


        //Test on Table 2
        List<WriteRequest> forumListT2 = new ArrayList<WriteRequest>();
        Map<String, AttributeValue> forumKeyT2 =
            createItemKey(
                hashKeyName2, new AttributeValue().withN("1"),
                "range", new AttributeValue().withS("a"));
        forumListT2.add(new WriteRequest().withDeleteRequest(new DeleteRequest().withKey(forumKeyT2)));


        requestItems.put(tableName1, forumList);
        requestItems.put(tableName2, forumListT2);
        do {
            System.out.println("Making the request.");


            batchWriteItemRequest.withRequestItems(requestItems);
            result = getClient().batchWriteItem(batchWriteItemRequest);


            // Print consumed capacity units
            for(ConsumedCapacity entry : result.getConsumedCapacity()) {
                String tableName1 = entry.getTableName();
                Double consumedCapacityUnits = entry.getCapacityUnits();
                System.out.println("Consumed capacity units for table " + tableName1 + ": " + consumedCapacityUnits);
            }


            // Check for unprocessed keys which could happen if you exceed provisioned throughput
            System.out.println("Unprocessed Put and Delete requests: \n" + result.getUnprocessedItems());
            requestItems = result.getUnprocessedItems();
        } while (result.getUnprocessedItems().size() > 0);
    }

View Full Code Here

    @Test
    public void batchWriteItemWithDuplicateDeletionTest() throws Exception{
        this.vanillaBatchWriteItemTest();


        BatchWriteItemRequest batchWriteItemRequest = new BatchWriteItemRequest();
        BatchWriteItemResult result;


        // Create a map for the requests in the batch
        Map<String, List<WriteRequest>> requestItems = new HashMap<String, List<WriteRequest>>();


        // Test: delete some items from database

View Full Code Here

     * Continue trying to process the batch until it finishes or an exception
     * occurs.
     */


    private FailedBatch callUntilCompletion(Map<String, List<WriteRequest>> batch) {
        BatchWriteItemResult result = null;
        int retries = 0;
        FailedBatch failedBatch = null;
        while (true) {
            try {
                result = db.batchWriteItem(new BatchWriteItemRequest().withRequestItems(batch));
            } catch (Exception e) {
                failedBatch = new FailedBatch();
                failedBatch.setUnprocessedItems(batch);
                failedBatch.setException(e);
                return failedBatch;
            }
            retries++;
            batch = result.getUnprocessedItems();
            if (batch.size() > 0) {
                pauseExponentially(retries);
            } else {
                break;
            }

View Full Code Here

     * Continue trying to process the batch until it finishes or an exception
     * occurs.
     */


    private FailedBatch callUntilCompletion(Map<String, List<WriteRequest>> batch) {
        BatchWriteItemResult result = null;
        int retries = 0;
        FailedBatch failedBatch = null;
        while (true) {
            try {
                result = db.batchWriteItem(new BatchWriteItemRequest().withRequestItems(batch));
            } catch (Exception e) {
                failedBatch = new FailedBatch();
                failedBatch.setUnprocessedItems(batch);
                failedBatch.setException(e);
                return failedBatch;
            }
            retries++;
            batch = result.getUnprocessedItems();
            if (batch.size() > 0) {
                pauseExponentially(retries);
            } else {
                break;
            }

View Full Code Here

  private void batchWrite(Map<String, List<WriteRequest>> items) {
    if (items == null || items.isEmpty()) {
      return;
    }
    try {
      BatchWriteItemResult result = client().batchWriteItem(new BatchWriteItemRequest().
          withReturnConsumedCapacity(ReturnConsumedCapacity.TOTAL).withRequestItems(items));
      if (result == null) {
        return;
      }
      logger.debug("batchWrite() CC: {}", result.getConsumedCapacity());


      Thread.sleep(1000);


      if (result.getUnprocessedItems() != null && !result.getUnprocessedItems().isEmpty()) {
        logger.warn("UNPROCESSED {0}", result.getUnprocessedItems().size());
        batchWrite(result.getUnprocessedItems());
      }
    } catch (Exception e) {
      logger.error(null, e);
    }
  }

View Full Code Here

                if ( !writeRequestIter.hasNext() ) {
                    tableIter.remove();
                }
            }


            BatchWriteItemResult result = db.batchWriteItem(new BatchWriteItemRequest().withRequestItems(batch));


            // add any unprocessed items back into the list to process
            for ( Entry<String, List<WriteRequest>> unprocessedItem : result.getUnprocessedItems().entrySet() ) {
                if ( !requestItems.containsKey(unprocessedItem.getKey()) ) {
                    requestItems.put(unprocessedItem.getKey(), new LinkedList<WriteRequest>());
                }
                requestItems.get(unprocessedItem.getKey()).addAll(unprocessedItem.getValue());
            }

View Full Code Here

     * Continue trying to process the batch until it finishes or an exception
     * occurs.
     */


    private FailedBatch callUntilCompletion(Map<String, List<WriteRequest>> batch) {
        BatchWriteItemResult result = null;
        int retries = 0;
        FailedBatch failedBatch = null;
        while (true) {
            try {
                result = db.batchWriteItem(new BatchWriteItemRequest().withRequestItems(batch));
            } catch (Exception e) {
                failedBatch = new FailedBatch();
                failedBatch.setUnprocessedItems(batch);
                failedBatch.setException(e);
                return failedBatch;
            }
            retries++;
            batch = result.getUnprocessedItems();
            if (batch.size() > 0) {
                pauseExponentially(retries);
            } else {
                break;
            }

View Full Code Here

                if ( !writeRequestIter.hasNext() ) {
                    tableIter.remove();
                }
            }


            BatchWriteItemResult result = db.batchWriteItem(new BatchWriteItemRequest().withRequestItems(batch));


            // add any unprocessed items back into the list to process
            for ( Entry<String, List<WriteRequest>> unprocessedItem : result.getUnprocessedItems().entrySet() ) {
                if ( !requestItems.containsKey(unprocessedItem.getKey()) ) {
                    requestItems.put(unprocessedItem.getKey(), new LinkedList<WriteRequest>());
                }
                requestItems.get(unprocessedItem.getKey()).addAll(unprocessedItem.getValue());
            }

View Full Code Here

        Map<String, Condition> conditions = new HashMap<String, Condition>();
        for ( Method getter : reflector.getKeyGetters(obj.getClass()) ) {
            if ( getter.isAnnotationPresent(DynamoDBHashKey.class) ) {
                conditions.put(
                        reflector.getAttributeName(getter),
                        new Condition().withComparisonOperator(ComparisonOperator.EQ).withAttributeValueList(
                                getSimpleAttributeValue(getter, safeInvoke(getter, obj, (Object[])null))));
            }
        }
        return conditions;
    }

View Full Code Here

                    break;
                }
            }
        }


        db.deleteItem(applyUserAgent(new DeleteItemRequest().withKey(key).withTableName(tableName).withExpected(expectedValues)));
    }

View Full Code Here

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