pulsar-client-cpp/python/src/consumer.cc

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
#include "utils.h"

void Consumer_unsubscribe(Consumer& consumer) {
    Result res;
    Py_BEGIN_ALLOW_THREADS
    res = consumer.unsubscribe();
    Py_END_ALLOW_THREADS

    CHECK_RESULT(res);
}

Message Consumer_receive(Consumer& consumer) {
    Message msg;
    Result res;

    while (true) {
        Py_BEGIN_ALLOW_THREADS
        // Use 100ms timeout to periodically check whether the
        // interpreter was interrupted
        res = consumer.receive(msg, 100);
        Py_END_ALLOW_THREADS

        if (res != ResultTimeout) {
            // In case of timeout we keep calling receive() to simulate a
            // blocking call until a message is available, while breaking
            // every once in a while to check the Python signal status
            break;
        }

        if (PyErr_CheckSignals() == -1) {
            PyErr_SetInterrupt();
            return msg;
        }
    }

    CHECK_RESULT(res);
    return msg;
}

Message Consumer_receive_timeout(Consumer& consumer, int timeoutMs) {
    Message msg;
    Result res;
    Py_BEGIN_ALLOW_THREADS
    res = consumer.receive(msg, timeoutMs);
    Py_END_ALLOW_THREADS

    CHECK_RESULT(res);
    return msg;
}

void Consumer_acknowledge(Consumer& consumer, const Message& msg) {
    Result res;
    Py_BEGIN_ALLOW_THREADS
    res = consumer.acknowledge(msg);
    Py_END_ALLOW_THREADS

    CHECK_RESULT(res);
}

void Consumer_acknowledge_message_id(Consumer& consumer, const MessageId& msgId) {
    Result res;
    Py_BEGIN_ALLOW_THREADS
    res = consumer.acknowledge(msgId);
    Py_END_ALLOW_THREADS

    CHECK_RESULT(res);
}

void Consumer_acknowledge_cumulative(Consumer& consumer, const Message& msg) {
    Result res;
    Py_BEGIN_ALLOW_THREADS
    res = consumer.acknowledgeCumulative(msg);
    Py_END_ALLOW_THREADS

    CHECK_RESULT(res);
}

void Consumer_acknowledge_cumulative_message_id(Consumer& consumer, const MessageId& msgId) {
    Result res;
    Py_BEGIN_ALLOW_THREADS
    res = consumer.acknowledgeCumulative(msgId);
    Py_END_ALLOW_THREADS

    CHECK_RESULT(res);
}

void Consumer_close(Consumer& consumer) {
    Result res;
    Py_BEGIN_ALLOW_THREADS
    res = consumer.close();
    Py_END_ALLOW_THREADS

    CHECK_RESULT(res);
}

void Consumer_pauseMessageListener(Consumer& consumer) {
    CHECK_RESULT(consumer.pauseMessageListener());
}

void Consumer_resumeMessageListener(Consumer& consumer) {
    CHECK_RESULT(consumer.resumeMessageListener());
}

void export_consumer() {
    using namespace boost::python;

    class_<Consumer>("Consumer", no_init)
            .def("topic", &Consumer::getTopic, "return the topic this consumer is subscribed to",
                 return_value_policy<copy_const_reference>())
            .def("subscription_name", &Consumer::getSubscriptionName, return_value_policy<copy_const_reference>())
            .def("unsubscribe", &Consumer_unsubscribe)
            .def("receive", &Consumer_receive)
            .def("receive", &Consumer_receive_timeout)
            .def("acknowledge", &Consumer_acknowledge)
            .def("acknowledge", &Consumer_acknowledge_message_id)
            .def("acknowledge_cumulative", &Consumer_acknowledge_cumulative)
            .def("acknowledge_cumulative", &Consumer_acknowledge_cumulative_message_id)
            .def("close", &Consumer_close)
            .def("pause_message_listener", &Consumer_pauseMessageListener)
            .def("resume_message_listener", &Consumer_resumeMessageListener)
            .def("redeliver_unacknowledged_messages", &Consumer::redeliverUnacknowledgedMessages)
            ;
}