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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* \class vdstestlib::DirConfig
* \ingroup config
*
* \brief Helper class for generating dir config
*
* Some components use the same config identifier for config of multiple
* types. This can not be represented in file or raw config specifications.
* This helper class make it easy to use dir config, while not generating a
* lot of config files to check in, but keeping the config that needs to be
* changed programmatically in the unit test itself.
*
* To not make the class complex, all config entries are just key/value pairs.
* For string config entries make sure you include the double quotes in the
* value.
*/
#pragma once
#include <list>
#include <map>
#include <string>
namespace vdstestlib {
struct DirConfig {
// Make some aliases to make it easy to see in header file what is what
typedef std::string ConfigName;
typedef std::string ConfigKey;
typedef std::string ConfigValue;
struct Config {
ConfigName defFileName;
std::list<std::pair<ConfigKey, ConfigValue> > config;
mutable bool dirtyCache;
Config(const ConfigName&);
~Config();
void clear() { config.clear(); }
void set(const ConfigKey&); // Set valueless key, such as array size
void set(const ConfigKey&, const ConfigValue&);
template<typename T>
void setValue(const ConfigKey& key, const T& value);
void remove(const ConfigKey&);
const ConfigValue* get(const ConfigKey&) const;
template<typename T>
T getValue(const ConfigKey& key, const T& defVal) const;
};
DirConfig();
~DirConfig();
// Adjusts the memory representation of this config.
// publish() to push the config from memory to files.
Config& addConfig(const ConfigName&); // Complain if existing
Config& getConfig(const ConfigName&, bool createIfNonExisting = false);
void removeConfig(const ConfigName&);
/** Write the configs given to file. */
void publish() const;
/** Get the id that should be used to get config from this instance. */
std::string getConfigId() const;
std::string getDir() const { return _dirName; }
/** Return whether memory representation currently differ from files. */
bool isCacheDirty() const;
private:
static unsigned int _nextDir;
std::map<ConfigName, Config> _configs;
std::string _dirName;
};
} // storage
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