Java 类com.amazonaws.services.dynamodbv2.model.BatchWriteItemResult 实例源码

public int sendDeleteRequests() throws IllegalArgumentException {
    if (batchDeleteRequests.isEmpty()) {
        return 0;
    }
    BatchWriteItemRequest batchWriteItemRequest = genBatchWriteItemRequest();
    BatchWriteItemResult bathWriteResult = sendBatchWriteRequest(batchWriteItemRequest);
    int undeletedItemNum = countAndPrintUndeletedItems(bathWriteResult);
    if(!isRunningOnDDBLocal) {
        // DDB Local does not support rate limiting
        tableWriteRateLimiter.adjustRateWithConsumedCapacity(bathWriteResult.getConsumedCapacity());
    }
    int deletedRequest = batchDeleteRequests.size() - undeletedItemNum;
    totalNumOfItemsDeleted += deletedRequest;
    PrintHelper.printDeleteProgressInfo(deletedRequest, totalNumOfItemsDeleted);
    batchDeleteRequests = new ArrayList<WriteRequest>();
    return deletedRequest;
}

/**
 * Writes multiple items in batch.
 * @param items a map of tables->write requests
 */
protected static void batchWrite(Map<String, List<WriteRequest>> items) {
    if (items == null || items.isEmpty()) {
        return;
    }
    try {
        BatchWriteItemResult result = getClient().batchWriteItem(new BatchWriteItemRequest().
                withReturnConsumedCapacity(ReturnConsumedCapacity.TOTAL).withRequestItems(items));
        if (result == null) {
            return;
        }
        logger.debug("batchWrite(): total {}, cc {}", items.size(), result.getConsumedCapacity());

        if (result.getUnprocessedItems() != null && !result.getUnprocessedItems().isEmpty()) {
            Thread.sleep(1000);
            logger.warn("{} UNPROCESSED write requests!", result.getUnprocessedItems().size());
            batchWrite(result.getUnprocessedItems());
        }
    } catch (Exception e) {
        logger.error(null, e);
    }
}

private void commitPartial(List<WriteRequest> list) {
    Timer t = new Timer();
Map<String, List<WriteRequest>> map = new HashMap<>();
map.put(getTenant().getName(), list);
BatchWriteItemResult result = m_client.batchWriteItem(new BatchWriteItemRequest(map));
int retry = 0;
while(result.getUnprocessedItems().size() > 0) {
    if(retry == RETRY_SLEEPS.length) throw new RuntimeException("All retries failed");
    m_logger.debug("Committing {} unprocessed items, retry: {}", result.getUnprocessedItems().size(), retry + 1);
    try {
        Thread.sleep(RETRY_SLEEPS[retry++]);
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
        result = m_client.batchWriteItem(new BatchWriteItemRequest(result.getUnprocessedItems()));
}
m_logger.debug("Committed {} writes in {}", list.size(), t);
list.clear();
  }

public CompletableFuture<BatchWriteItemResult> batchWriteItem(final Map<String, List<WriteRequest>> requestItems) {
    return asyncExecutor.execute(new Callable<BatchWriteItemResult>() {
        @Override
        public BatchWriteItemResult call() throws Exception {
            return dbExecutor.batchWriteItem(requestItems);
        }
    });
}

public CompletableFuture<BatchWriteItemResult> batchWriteItem(final BatchWriteItemRequest batchWriteItemRequest) {
    return asyncExecutor.execute(new Callable<BatchWriteItemResult>() {
        @Override
        public BatchWriteItemResult call() throws Exception {
            return dbExecutor.batchWriteItem(batchWriteItemRequest);
        }
    });
}

public BatchWriteItemResult putBatch(String tableName, Map<String, AttributeValue> item,
    long maxItemsPerBatch, Reporter reporter)
    throws UnsupportedEncodingException {
  int itemSizeBytes = DynamoDBUtil.getItemSizeBytes(item);
  if (itemSizeBytes > maxItemByteSize) {
    throw new RuntimeException("Cannot pass items with size greater than " + maxItemByteSize
        + ". Item with size of " + itemSizeBytes + " was given.");
  }
  maxItemsPerBatch = DynamoDBUtil.getBoundedBatchLimit(config, maxItemsPerBatch);
  BatchWriteItemResult result = null;
  if (writeBatchMap.containsKey(tableName)) {

    boolean writeRequestsForTableAtLimit =
        writeBatchMap.get(tableName).size() >= maxItemsPerBatch;

    boolean totalSizeOfWriteBatchesOverLimit =
        writeBatchMapSizeBytes + itemSizeBytes > maxBatchSize;

    if (writeRequestsForTableAtLimit || totalSizeOfWriteBatchesOverLimit) {
        result = writeBatch(reporter, itemSizeBytes);
    }
  }
  // writeBatchMap could be cleared from writeBatch()
  List<WriteRequest> writeBatchList;
  if (!writeBatchMap.containsKey(tableName)) {
    writeBatchList = new ArrayList<>((int) maxItemsPerBatch);
    writeBatchMap.put(tableName, writeBatchList);
  } else {
    writeBatchList = writeBatchMap.get(tableName);
  }
  writeBatchList.add(new WriteRequest().withPutRequest(new PutRequest().withItem(item)));
  writeBatchMapSizeBytes += itemSizeBytes;

  return result;
}

@Override
public void write(K key, V value) throws IOException {
  if (value == null) {
    throw new RuntimeException("Null record encountered. At least the key columns must be "
        + "specified.");
  }

  verifyInterval();
  if (progressable != null) {
    progressable.progress();
  }

  DynamoDBItemWritable item = convertValueToDynamoDBItem(key, value);
  BatchWriteItemResult result = client.putBatch(tableName, item.getItem(),
      permissibleWritesPerSecond - writesPerSecond, reporter);

  batchSize++;
  totalItemsWritten++;

  if (result != null) {
    if (result.getConsumedCapacity() != null) {
      for (ConsumedCapacity consumedCapacity : result.getConsumedCapacity()) {
        double consumedUnits = consumedCapacity.getCapacityUnits();
        totalIOPSConsumed += consumedUnits;
      }
    }

    int unprocessedItems = 0;
    for (List<WriteRequest> requests : result.getUnprocessedItems().values()) {
      unprocessedItems += requests.size();
    }
    writesPerSecond += batchSize - unprocessedItems;
    batchSize = unprocessedItems;
  }
}

/**
 * Writes to DynamoDBTable using an exponential backoff. If the
 * batchWriteItem returns unprocessed items then it will exponentially
 * backoff and retry the unprocessed items.
 */
public List<ConsumedCapacity> runWithBackoff(BatchWriteItemRequest req) {
    BatchWriteItemResult writeItemResult = null;
    List<ConsumedCapacity> consumedCapacities = new LinkedList<ConsumedCapacity>();
    Map<String, List<WriteRequest>> unprocessedItems = null;
    boolean interrupted = false;
    try {
        do {
            writeItemResult = client.batchWriteItem(req);
            unprocessedItems = writeItemResult.getUnprocessedItems();
            consumedCapacities
                    .addAll(writeItemResult.getConsumedCapacity());

            if (unprocessedItems != null) {
                req.setRequestItems(unprocessedItems);
                try {
                    Thread.sleep(exponentialBackoffTime);
                } catch (InterruptedException ie) {
                    interrupted = true;
                } finally {
                    exponentialBackoffTime *= 2;
                    if (exponentialBackoffTime > BootstrapConstants.MAX_EXPONENTIAL_BACKOFF_TIME) {
                        exponentialBackoffTime = BootstrapConstants.MAX_EXPONENTIAL_BACKOFF_TIME;
                    }
                }
            }
        } while (unprocessedItems != null && unprocessedItems.get(tableName) != null);
        return consumedCapacities;
    } finally {
        if (interrupted) {
            Thread.currentThread().interrupt();
        }
    }
}

protected BatchWriteItemResult sendBatchWriteRequest(BatchWriteItemRequest batchWriteItemRequest) {
    try {
        return dynamoDBClient.batchWriteItem(batchWriteItemRequest);
    } catch (AmazonServiceException ase) {
        throw new IllegalArgumentException("Error: Failed to delete " + ase.getMessage());
    } catch (IllegalArgumentException iae) {
        throw new IllegalArgumentException("Error: Invalid argument: " + iae.getMessage());
    }
}

protected int countAndPrintUndeletedItems(BatchWriteItemResult batchWriteResult) {
    if (!batchWriteResult.getUnprocessedItems().isEmpty()) {
        logger.warn("WARNING: UNPROCESSED ITEMS:");
        List<WriteRequest> unprocessedRequests = (batchWriteResult.getUnprocessedItems()).get(tableName);
        int count = 0;
        for (WriteRequest w : unprocessedRequests) {
            PrintHelper.printItem(0, count++, w.getDeleteRequest().getKey());
        }
        return unprocessedRequests.size();
    }
    return 0;
}

@Test
public void testCountAndPrintUndeletedItems() {
    BatchWriteItemResult mockBatchWriteResult = Mockito.mock(BatchWriteItemResult.class);
    HashMap<String, List<WriteRequest>> mockUnProcessedItems = Mockito.mock(HashMap.class);
    Mockito.when(mockBatchWriteResult.getUnprocessedItems()).thenReturn(mockUnProcessedItems);
    Mockito.when(mockUnProcessedItems.isEmpty()).thenReturn(true);
    tableWriter.countAndPrintUndeletedItems(mockBatchWriteResult);
    Mockito.verify(mockUnProcessedItems, Mockito.times(1)).isEmpty();
    Mockito.verify(mockUnProcessedItems, Mockito.times(0)).get(Mockito.anyString());
}

@Test
public void test_batchWriteItem_WithAllParameters() throws Exception {
  createTable();

  String TEST_ATTRIBUTE_2 = "Attribute2";
  String TEST_ATTRIBUTE_VALUE_2 = "AttributeValue2";

  Map<String, List<WriteRequest>> requestItems = new HashMap<String, List<WriteRequest>>();
  List<WriteRequest> writeRequests = new ArrayList<WriteRequest>();

  Map<String, AttributeValue> item1 = new HashMap<String, AttributeValue>();
  item1.put(TEST_ATTRIBUTE, new AttributeValue()
    .withS(TEST_ATTRIBUTE_VALUE));
  WriteRequest writeRequest1 = new WriteRequest()
    .withPutRequest(new PutRequest()
      .withItem(item1));
  writeRequests.add(writeRequest1);

  Map<String, AttributeValue> item2 = new HashMap<String, AttributeValue>();
  item2.put(TEST_ATTRIBUTE_2, new AttributeValue()
    .withS(TEST_ATTRIBUTE_VALUE_2));
  WriteRequest writeRequest2 = new WriteRequest()
    .withPutRequest(new PutRequest()
      .withItem(item2));
  writeRequests.add(writeRequest2);

  requestItems.put(TEST_TABLE_NAME, writeRequests);

  BatchWriteItemResult result = dynamoDb.batchWriteItem(requestItems);
  List<ConsumedCapacity> consumedCapacities = result.getConsumedCapacity();

  assertThat(consumedCapacities.size(), equalTo(writeRequests.size()));
}

public BatchWritePointResult batchWritePoints(List<PutPointRequest> putPointRequests) {
    BatchWriteItemRequest batchItemRequest = new BatchWriteItemRequest();
    List<WriteRequest> writeRequests = new ArrayList<WriteRequest>();
    for (PutPointRequest putPointRequest : putPointRequests) {
        long geohash = S2Manager.generateGeohash(putPointRequest.getGeoPoint());
        long hashKey = S2Manager.generateHashKey(geohash, config.getHashKeyLength());
        String geoJson = GeoJsonMapper.stringFromGeoObject(putPointRequest.getGeoPoint());

        PutRequest putRequest = putPointRequest.getPutRequest();
        AttributeValue hashKeyValue = new AttributeValue().withN(String.valueOf(hashKey));
        putRequest.getItem().put(config.getHashKeyAttributeName(), hashKeyValue);
        putRequest.getItem().put(config.getRangeKeyAttributeName(), putPointRequest.getRangeKeyValue());
        AttributeValue geohashValue = new AttributeValue().withN(Long.toString(geohash));
        putRequest.getItem().put(config.getGeohashAttributeName(), geohashValue);
        AttributeValue geoJsonValue = new AttributeValue().withS(geoJson);
        putRequest.getItem().put(config.getGeoJsonAttributeName(), geoJsonValue);           

        WriteRequest writeRequest = new WriteRequest(putRequest);
        writeRequests.add(writeRequest);
    }
    Map<String, List<WriteRequest>> requestItems = new HashMap<String, List<WriteRequest>>();
    requestItems.put(config.getTableName(), writeRequests);
    batchItemRequest.setRequestItems(requestItems);
    BatchWriteItemResult batchWriteItemResult = config.getDynamoDBClient().batchWriteItem(batchItemRequest);
    BatchWritePointResult batchWritePointResult = new BatchWritePointResult(batchWriteItemResult);
    return batchWritePointResult;
}

public BatchWriteItemResult batchWriteItem(final Map<String, List<WriteRequest>> requestItems) {
    return dynamoDB.batchWriteItem(requestItems);
}

public BatchWriteItemResult batchWriteItem(final BatchWriteItemRequest batchWriteItemRequest) {
    return dynamoDB.batchWriteItem(batchWriteItemRequest);
}

public BatchWriteItemResult batchWriteItem(final BatchWriteItemRequest batchRequest) throws BackendException {
    int count = 0;
    for (Entry<String, List<WriteRequest>> entry : batchRequest.getRequestItems().entrySet()) {
        final String tableName = entry.getKey();
        final List<WriteRequest> requests = entry.getValue();
        count += requests.size();
        if (count > BATCH_WRITE_MAX_NUMBER_OF_ITEMS) {
            throw new IllegalArgumentException("cant have more than 25 requests in a batchwrite");
        }
        for (final WriteRequest request : requests) {
            if ((request.getPutRequest() != null) == (request.getDeleteRequest() != null)) {
                throw new IllegalArgumentException("Exactly one of PutRequest or DeleteRequest must be set in each WriteRequest in a batch write operation");
            }
            final int wcu;
            final String apiName;
            if (request.getPutRequest() != null) {
                apiName = PUT_ITEM;
                final int bytes = calculateItemSizeInBytes(request.getPutRequest().getItem());
                wcu = computeWcu(bytes);
            } else { //deleterequest
                apiName = DELETE_ITEM;
                wcu = estimateCapacityUnits(apiName, tableName);
            }
            timedWriteThrottle(apiName, tableName, wcu);
        }
    }

    BatchWriteItemResult result;
    setUserAgent(batchRequest);
    final Timer.Context apiTimerContext = getTimerContext(BATCH_WRITE_ITEM, null /*tableName*/);
    try {
        result = client.batchWriteItem(batchRequest);
    } catch (Exception e) {
        throw processDynamoDbApiException(e, BATCH_WRITE_ITEM, null /*tableName*/);
    } finally {
        apiTimerContext.stop();
    }
    if (result.getConsumedCapacity() != null) {
        for (ConsumedCapacity ccu : result.getConsumedCapacity()) {
            meterConsumedCapacity(BATCH_WRITE_ITEM, ccu);
        }
    }
    return result;
}

private static void writeMultipleItemsBatchWrite() {
    try {                    

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

       // Create a PutRequest for a new Forum item
       Map<String, AttributeValue> forumItem = new HashMap<String, AttributeValue>();
       forumItem.put("Name", new AttributeValue().withS("Amazon RDS"));
       forumItem.put("Threads", new AttributeValue().withN("0"));

       List<WriteRequest> forumList = new ArrayList<WriteRequest>();
       forumList.add(new WriteRequest().withPutRequest(new PutRequest().withItem(forumItem)));
       requestItems.put(table1Name, forumList);

       // Create a PutRequest for a new Thread item
       Map<String, AttributeValue> threadItem = new HashMap<String, AttributeValue>();
       threadItem.put("ForumName", new AttributeValue().withS("Amazon RDS"));
       threadItem.put("Subject", new AttributeValue().withS("Amazon RDS Thread 1"));
       threadItem.put("Message", new AttributeValue().withS("ElasticCache Thread 1 message"));
       threadItem.put("KeywordTags", new AttributeValue().withSS(Arrays.asList("cache", "in-memory")));

       List<WriteRequest> threadList = new ArrayList<WriteRequest>();
       threadList.add(new WriteRequest().withPutRequest(new PutRequest().withItem(threadItem)));

       // Create a DeleteRequest for a Thread item
       Map<String, AttributeValue> threadDeleteKey = new HashMap<String, AttributeValue>(); 
       threadDeleteKey.put("ForumName", new AttributeValue().withS("Amazon S3"));
       threadDeleteKey.put("Subject", new AttributeValue().withS("S3 Thread 100"));

       threadList.add(new WriteRequest().withDeleteRequest(new DeleteRequest().withKey(threadDeleteKey)));
       requestItems.put(table2Name, threadList);

       BatchWriteItemResult result;
       BatchWriteItemRequest batchWriteItemRequest = new BatchWriteItemRequest()
           .withReturnConsumedCapacity(ReturnConsumedCapacity.TOTAL);

       do {
           System.out.println("Making the request.");

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

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

    }  catch (AmazonServiceException ase) {
        System.err.println("Failed to retrieve items: ");
        ase.printStackTrace(System.err);
    }  

}

public BatchWritePointResult(BatchWriteItemResult batchWriteItemResult) {
    this.batchWriteItemResult = batchWriteItemResult;
}

public BatchWriteItemResult getBatchWriteItemResult() {
    return batchWriteItemResult;
}