// 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 "util/thrift_client.h"

#include <thrift/transport/TTransport.h>

#include <thrift/transport/TTransportException.h>

// IWYU pragma: no_include <bits/chrono.h>

#include <chrono> // IWYU pragma: keep

#include <string>

#include <thread>

#include "gutil/strings/substitute.h"

namespace doris {

Status ThriftClientImpl::open() {

    try {

        if (!_transport->isOpen()) {

            _transport->open();

        }

    } catch (const apache::thrift::transport::TTransportException& e) {

        try {

            _transport->close();

        } catch (const apache::thrift::transport::TTransportException& e) {

            VLOG_CRITICAL << "Error closing socket to: " << ipaddress() << ":" << port()

                          << ", ignoring (" << e.what() << ")";

        }

        // In certain cases in which the remote host is overloaded, this failure can

        // happen quite frequently. Let's print this error message without the stack

        // trace as there aren't many callers of this function.

        const std::string& err_msg = strings::Substitute("Couldn't open transport for $0:$1 ($2)",

                                                         ipaddress(), port(), e.what());

        VLOG_CRITICAL << err_msg;

        return Status::RpcError(err_msg);

    }

    return Status::OK();

}

Status ThriftClientImpl::open_with_retry(int num_tries, int wait_ms) {

    DCHECK_GE(wait_ms, 0);

    Status status;

    int try_count = 0L;

    while (num_tries <= 0 || try_count < num_tries) {

        ++try_count;

        status = open();

        if (status.ok()) {

            return status;

        }

        LOG(INFO) << "Unable to connect to " << _ipaddress << ":" << _port;

        if (num_tries < 0) {

            LOG(INFO) << "(Attempt " << try_count << ", will retry indefinitely)";

        } else {

            LOG(INFO) << "(Attempt " << try_count << " of " << num_tries << ")";

        }

        std::this_thread::sleep_for(std::chrono::milliseconds(wait_ms));

    }

    return status;

}

void ThriftClientImpl::close() {

    try {

        if (_transport != nullptr && _transport->isOpen()) {

            _transport->close();

        }

    } catch (const apache::thrift::transport::TTransportException& e) {

        LOG(INFO) << "Error closing connection to: " << ipaddress() << ":" << port()

                  << ", ignoring (" << e.what() << ")";

        // Forcibly close the socket (since the transport may have failed to get that far

        // during close())

        try {

            if (_socket != nullptr) {

                _socket->close();

            }

        } catch (const apache::thrift::transport::TTransportException& e) {

            LOG(INFO) << "Error closing socket to: " << ipaddress() << ":" << port()

                      << ", ignoring (" << e.what() << ")";

        }

    }

}

} // namespace doris