HTTPErrorPage.h

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/*
 *  Copyright (c) 2015-present, Facebook, Inc.
 *  All rights reserved.
 *
 *  This source code is licensed under the BSD-style license found in the
 *  LICENSE file in the root directory of this source tree. An additional grant
 *  of patent rights can be found in the PATENTS file in the same directory.
 *
 */
#pragma once

#include <memory>
#include <string>

namespace folly {
class IOBuf;
}

namespace proxygen {

class HTTPErrorPage {
public:
  struct Page {
    Page(const std::string& pageContentType,
        std::unique_ptr<folly::IOBuf> pageContent) :
      contentType(pageContentType), content(std::move(pageContent)) {}

    Page(Page&& other) noexcept :
      contentType(other.contentType),
      content(std::move(other.content)) {
    }

    const std::string contentType;
    std::unique_ptr<folly::IOBuf> content;
  };

  virtual ~HTTPErrorPage() {}

  virtual Page generate(uint64_t requestID,
                        unsigned httpStatusCode,
                        const std::string& reason,
                        std::unique_ptr<folly::IOBuf> body,
                        const std::string& detailReason) const = 0;
};

class HTTPStaticErrorPage: public HTTPErrorPage {
public:
  explicit HTTPStaticErrorPage(
    std::unique_ptr<folly::IOBuf> content,
    const std::string& contentType = "text/html; charset=utf-8");

  Page generate(uint64_t requestID,
                unsigned httpStatusCode,
                const std::string& reason,
                std::unique_ptr<folly::IOBuf> body,
                const std::string& detailReason) const override;

private:
  std::unique_ptr<folly::IOBuf> content_;
  std::string contentType_;
};

} // proxygen