CentralConfig.h

Go to the documentation of this file.

#ifndef _fwk_CentralConfig_h_
#define _fwk_CentralConfig_h_

#include <utl/AugerException.h>

#include <string>
#include <map>
#include <list>
#include <set>
#include <sstream>

#include <boost/iterator/transform_iterator.hpp>
#include <boost/program_options.hpp>


namespace utl {
  class Reader;
  class Branch;
}


namespace fwk {

  class ConfigLink {

  public:
    std::string GetLink() const { return fXLink; }
    std::string GetFileType() const { return fFileType; }

    utl::Reader* GetReader() const { return fReader; }

  private:
    std::string fXLink;
    std::string fFileType;
    utl::Reader* fReader = nullptr;  // no delete in dtor, just a helper class

    friend class CentralConfig;
  };


  class CentralConfig {

    typedef std::map<std::string, ConfigLink>::iterator InternalConfigIterator;

    struct InternalIdFunctor {
      std::string
      operator()(const std::pair<std::string, ConfigLink>& pair) const
      { return pair.first; }
    };

  public:

    static CentralConfig* GetInstance(const std::string& bootstrapFileName,
                                      const bool fingerprintFatal = false,
                                      const bool validate = true);

    static CentralConfig* GetInstance();

    utl::Branch GetTopBranch(const std::string& id);

    const utl::Reader* GetReader(const std::string& id);

    //std::string GetLinkName(const std::string Id);

    void WriteConfig(const std::string& fileName = "");

    std::string GetConfig();

    typedef boost::transform_iterator<InternalIdFunctor,
                                      InternalConfigIterator,
                                      std::string> IdIterator;
    IdIterator IdsBegin();
    IdIterator IdsEnd();

    const std::string& GetInstallPath() const { return fInstallPath; }

  protected:
    // These two methods need to be here so I can inherit from this class.
    CentralConfig();
    ~CentralConfig();

    // At least one of the following two methods is needed to be able
    // to change the configuration.
    static void Reset(const std::string& bootstrapFileName,
                      const bool fingerprintFatal = false,
                      const bool validate = true);

    //void SetTopBranch(const std::string& id, const utl::Branch& branch);

    // Implementing leaky singleton
    static CentralConfig* fgInstance;

  private:
    std::string GetBootstrapUri();

    // Fill fConfigMap from bootstrap XML file
    void FindConfigBranch();
    void FillMap(const utl::Branch& branch);
    void ReplaceParameters(const utl::Branch&);
    void DescendAndReplace(utl::Branch replacement, utl::Branch& original);
    void ReadConfig(const std::string& bootstrapFile);
    void LogBootstrap();
    void CheckFingerprints(const bool fingerprintFatal);
    void FillConfigTimeFingerMap();
    void FillMd5Excludes();
    void AbortParse(const std::string& s = "");
    utl::Branch Find(std::string path);
    std::string AsString(const utl::Branch& branch,
                         const int indent = 0, const int indentIncrement = 2);

    static bool fgIsInitialized;
    std::map<std::string, ConfigLink> fConfigMap;
    std::set<std::string> fMd5Excludes;
    std::set<std::string> fUsedConfigs;
    std::stringstream fConfigInfo;
    bool fConfigInfoIsValid = false;

    // config file md5 fingerprints, generated by config
    std::multimap<std::string, std::string> fConfigTimeFingerMap;

    std::list<std::string> fNoMd5List;
    std::list<std::string> fMismatchedMd5List;

    utl::Reader* fBootstrapReader = nullptr;

    static bool fgValidate;

    std::string fInstallPath;

  };


  const char* GetLibraryPath();

}


#endif