// 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 "service/http/action/health_action.h"

#include <sstream>

#include <string>

#include "runtime/exec_env.h"

#include "service/http/http_channel.h"

#include "service/http/http_headers.h"

#include "service/http/http_request.h"

#include "service/http/http_status.h"

namespace doris {

const static std::string HEADER_JSON = "application/json";

void HealthAction::handle(HttpRequest* req) {

    std::string status;

    std::string msg;

    HttpStatus st;

    // always return HttpStatus::OK

    // because in k8s, we don't want the pod to be removed

    // from service during shutdown

    if (!doris::k_is_server_ready) {

        status = "Server is not available";

        msg = "Server is not ready";

        st = HttpStatus::OK;

    } else if (doris::k_doris_exit) {

        status = "Server is not available";

        msg = "Server is shutting down";

        st = HttpStatus::OK;

    } else {

        status = "OK";

        msg = "OK";

        st = HttpStatus::OK;

    }

    std::stringstream ss;

    ss << "{";

    ss << "\"status\": \"" << status << "\",";

    ss << "\"msg\": \"" << msg << "\"";

    ss << "}";

    std::string result = ss.str();

    req->add_output_header(HttpHeaders::CONTENT_TYPE, HEADER_JSON.c_str());

    HttpChannel::send_reply(req, st, result);

}

} // end namespace doris