Examples with ResultSetFuture com.datastax.driver.core.ResultSetFuture used on opensource projects

Example 1 with ResultSetFuture

use of com.datastax.driver.core.ResultSetFuture in project flink by apache.

the class CassandraOutputFormat method writeRecord.

@Override
public void writeRecord(OUT record) throws IOException {
    if (exception != null) {
        throw new IOException("write record failed", exception);
    }
    Object[] fields = new Object[record.getArity()];
    for (int i = 0; i < record.getArity(); i++) {
        fields[i] = record.getField(i);
    }
    ResultSetFuture result = session.executeAsync(prepared.bind(fields));
    Futures.addCallback(result, callback);
}

Example 2 with ResultSetFuture

use of com.datastax.driver.core.ResultSetFuture in project nifi by apache.

the class PutCassandraQL method onTrigger.

@Override
public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException {
    ComponentLog logger = getLogger();
    FlowFile flowFile = session.get();
    if (flowFile == null) {
        return;
    }
    final long startNanos = System.nanoTime();
    final long statementTimeout = context.getProperty(STATEMENT_TIMEOUT).evaluateAttributeExpressions(flowFile).asTimePeriod(TimeUnit.MILLISECONDS);
    final Charset charset = Charset.forName(context.getProperty(CHARSET).evaluateAttributeExpressions(flowFile).getValue());
    // The documentation for the driver recommends the session remain open the entire time the processor is running
    // and states that it is thread-safe. This is why connectionSession is not in a try-with-resources.
    final Session connectionSession = cassandraSession.get();
    String cql = getCQL(session, flowFile, charset);
    try {
        PreparedStatement statement = connectionSession.prepare(cql);
        BoundStatement boundStatement = statement.bind();
        Map<String, String> attributes = flowFile.getAttributes();
        for (final Map.Entry<String, String> entry : attributes.entrySet()) {
            final String key = entry.getKey();
            final Matcher matcher = CQL_TYPE_ATTRIBUTE_PATTERN.matcher(key);
            if (matcher.matches()) {
                final int parameterIndex = Integer.parseInt(matcher.group(1));
                String paramType = entry.getValue();
                if (StringUtils.isEmpty(paramType)) {
                    throw new ProcessException("Value of the " + key + " attribute is null or empty, it must contain a valid value");
                }
                paramType = paramType.trim();
                final String valueAttrName = "cql.args." + parameterIndex + ".value";
                final String parameterValue = attributes.get(valueAttrName);
                try {
                    setStatementObject(boundStatement, parameterIndex - 1, valueAttrName, parameterValue, paramType);
                } catch (final InvalidTypeException | IllegalArgumentException e) {
                    throw new ProcessException("The value of the " + valueAttrName + " is '" + parameterValue + "', which cannot be converted into the necessary data type: " + paramType, e);
                }
            }
        }
        try {
            ResultSetFuture future = connectionSession.executeAsync(boundStatement);
            if (statementTimeout > 0) {
                future.getUninterruptibly(statementTimeout, TimeUnit.MILLISECONDS);
            } else {
                future.getUninterruptibly();
            }
            // Emit a Provenance SEND event
            final long transmissionMillis = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNanos);
            // This isn't a real URI but since Cassandra is distributed we just use the cluster name
            String transitUri = "cassandra://" + connectionSession.getCluster().getMetadata().getClusterName();
            session.getProvenanceReporter().send(flowFile, transitUri, transmissionMillis, true);
            session.transfer(flowFile, REL_SUCCESS);
        } catch (final TimeoutException e) {
            throw new ProcessException(e);
        }
    } catch (final NoHostAvailableException nhae) {
        getLogger().error("No host in the Cassandra cluster can be contacted successfully to execute this statement", nhae);
        // Log up to 10 error messages. Otherwise if a 1000-node cluster was specified but there was no connectivity,
        // a thousand error messages would be logged. However we would like information from Cassandra itself, so
        // cap the error limit at 10, format the messages, and don't include the stack trace (it is displayed by the
        // logger message above).
        getLogger().error(nhae.getCustomMessage(10, true, false));
        flowFile = session.penalize(flowFile);
        session.transfer(flowFile, REL_RETRY);
    } catch (final QueryExecutionException qee) {
        logger.error("Cannot execute the statement with the requested consistency level successfully", qee);
        flowFile = session.penalize(flowFile);
        session.transfer(flowFile, REL_RETRY);
    } catch (final QueryValidationException qve) {
        logger.error("The CQL statement {} is invalid due to syntax error, authorization issue, or another " + "validation problem; routing {} to failure", new Object[] { cql, flowFile }, qve);
        flowFile = session.penalize(flowFile);
        session.transfer(flowFile, REL_FAILURE);
    } catch (final ProcessException e) {
        logger.error("Unable to execute CQL select statement {} for {} due to {}; routing to failure", new Object[] { cql, flowFile, e });
        flowFile = session.penalize(flowFile);
        session.transfer(flowFile, REL_FAILURE);
    }
}

Example 3 with ResultSetFuture

use of com.datastax.driver.core.ResultSetFuture in project SimpleFlatMapper by arnaudroger.

the class DatastaxCrud method deleteAsync.

public UninterruptibleFuture<Void> deleteAsync(K key) {
    BoundStatement boundStatement = deleteQuery(key);
    ResultSetFuture resultSetFuture = session.executeAsync(boundStatement);
    return new NoResultFuture(resultSetFuture);
}

Example 4 with ResultSetFuture

use of com.datastax.driver.core.ResultSetFuture in project SimpleFlatMapper by arnaudroger.

the class DatastaxCrud method deleteAsync.

public UninterruptibleFuture<Void> deleteAsync(K key, long timestamp) {
    BoundStatement boundStatement = deleteQuery(key, timestamp);
    ResultSetFuture resultSetFuture = session.executeAsync(boundStatement);
    return new NoResultFuture(resultSetFuture);
}

Example 5 with ResultSetFuture

use of com.datastax.driver.core.ResultSetFuture in project thingsboard by thingsboard.

the class CassandraDeviceDao method findTenantDeviceTypesAsync.

@Override
public ListenableFuture<List<EntitySubtype>> findTenantDeviceTypesAsync(UUID tenantId) {
    Select select = select().from(ENTITY_SUBTYPE_COLUMN_FAMILY_NAME);
    Select.Where query = select.where();
    query.and(eq(ENTITY_SUBTYPE_TENANT_ID_PROPERTY, tenantId));
    query.and(eq(ENTITY_SUBTYPE_ENTITY_TYPE_PROPERTY, EntityType.DEVICE));
    query.setConsistencyLevel(cluster.getDefaultReadConsistencyLevel());
    ResultSetFuture resultSetFuture = executeAsyncRead(query);
    return Futures.transform(resultSetFuture, new Function<ResultSet, List<EntitySubtype>>() {

        @Nullable
        @Override
        public List<EntitySubtype> apply(@Nullable ResultSet resultSet) {
            Result<EntitySubtypeEntity> result = cluster.getMapper(EntitySubtypeEntity.class).map(resultSet);
            if (result != null) {
                List<EntitySubtype> entitySubtypes = new ArrayList<>();
                result.all().forEach((entitySubtypeEntity) -> entitySubtypes.add(entitySubtypeEntity.toEntitySubtype()));
                return entitySubtypes;
            } else {
                return Collections.emptyList();
            }
        }
    });
}