bmqpi_dtspan.h

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// Copyright 2021-2023 Bloomberg Finance L.P.
// SPDX-License-Identifier: Apache-2.0
//
// Licensed 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.
 
// bmqpi_dtspan.h                                                     -*-C++-*-
#ifndef INCLUDED_BMQPI_DTSPAN
#define INCLUDED_BMQPI_DTSPAN
 
 
// BMQ
 
// BDE
#include <bsl_string.h>
#include <bsl_string_view.h>
#include <bsl_unordered_map.h>
#include <bslma_allocator.h>
 
namespace BloombergLP {
namespace bmqpi {
 
// ============
// class DTSpan
// ============
 
class DTSpan {
  public:
    // PUBLIC CREATORS
 
    virtual ~DTSpan();
 
    // PUBLIC ACCESSORS
 
    virtual bsl::string_view operation() const = 0;
 
    // =============
    // class Baggage
    // =============
 
    // PUBLIC INNER CLASSES
 
    class Baggage BSLS_KEYWORD_FINAL {
      private:
        // PRIVATE TYPEDEFS
        typedef bsl::unordered_map<bsl::string, bsl::string> MapType;
 
        // PRIVATE DATA
        MapType d_data;
 
      public:
        // PUBLIC TYPES
        typedef MapType::const_iterator const_iterator;
 
        // PUBLIC CREATORS
        Baggage(bslma::Allocator* allocator = 0);
 
        // PUBLIC ACCESSORS
 
        const_iterator begin() const;
 
        const_iterator end() const;
 
        bool has(const bsl::string& key) const;
 
        bsl::string_view get(const bsl::string&      key,
                             const bsl::string_view& dflt = "") const;
 
        // PUBLIC MANIPULATORS
 
        void put(const bsl::string_view& key, const bsl::string_view& value);
 
        bool erase(const bsl::string& key);
    };
};
 
}  // close package namespace
}  // close enterprise namespace
 
#endif