serverAliasCache.hpp

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#ifndef RTCTK_COMPONENTFRAMEWORK_SERVERALIASCACHE_HPP
#define RTCTK_COMPONENTFRAMEWORK_SERVERALIASCACHE_HPP
 
#include <rtctk/componentFramework/dataPointPath.hpp>
 
#include <string>
#include <tuple>
#include <vector>
 
namespace rtctk::componentFramework {
 
class ServerAliasCache {
public:
    void Clear() {
        m_cache.clear();
    }
 
    void AddServerAlias(DataPointPath const& path, std::string const& alias) {
        m_cache.push_back(std::make_tuple(path.ToString(), alias));
    }
 
    std::string GetServerAlias(DataPointPath const& path) {
        // do a linear search through the table and pick the first entry that fits.
        // if our path starts with a string from the table, then this is the match
        // e.g. path = /foo/bar/baz and first table entry is /foo/ then this is a match
        for (auto const& entry : m_cache) {
            if (auto found = path.ToString().rfind(std::get<0>(entry), 0);
                found != std::string::npos) {
                return std::get<1>(entry);
            }
        }
 
        // if nothing is found, return an empty string which corresponds to no server alias
        return {};
    }
 
private:
    // data structure holding the information
    std::vector<std::tuple<std::string, std::string>> m_cache;
};
 
}  // namespace rtctk::componentFramework
 
#endif  // RTCTK_COMPONENTFRAMEWORK_SERVERALIASCACHE_HPP