experimental #2: now interpolates environment variables in config object file
parent
2871f8f8c1
commit
ebdb9d643a
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@ -2,3 +2,8 @@
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cmake-build-debug
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.idea
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./.idea
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./cmake-build-release/
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cmake-build-release
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CMakeFiles
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CMakeLists.txt
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Makefile
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@ -4,4 +4,5 @@ set(CMAKE_CXX_STANDARD 11)
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set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -std=c++1z -O0 -DDEBUG=1")
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set(SOURCE_FILES Rex.cpp src/loaders/abstract/loaders.cpp src/loaders/abstract/loaders.h src/json/jsoncpp.cpp src/loaders/low_level/JSON_Loader.cpp src/loaders/low_level/JSON_Loader.h src/loaders/misc/helpers.cpp src/loaders/misc/helpers.h src/loaders/abstract/Suite.cpp src/loaders/abstract/Suite.h src/loaders/abstract/Plan.cpp src/loaders/abstract/Plan.h src/loaders/abstract/Conf.cpp src/loaders/abstract/Conf.h src/loaders/abstract/Unit.cpp src/loaders/abstract/Unit.h src/loaders/abstract/Task.cpp src/loaders/abstract/Task.h src/Sproc/Sproc.cpp src/Sproc/Sproc.h src/Logger/Logger.cpp src/Logger/Logger.h)
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add_executable(rex ${SOURCE_FILES})
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@ -70,6 +70,8 @@ protected:
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Conf::Conf(std::string filename, int LOG_LEVEL ): JSON_Loader(LOG_LEVEL ), slog(LOG_LEVEL, "_conf_" )
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{
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this->LOG_LEVEL = LOG_LEVEL;
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std::string jval_s;
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bool jval_b;
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// prepare context spaghetti
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this->override_context = false;
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@ -83,65 +85,59 @@ Conf::Conf(std::string filename, int LOG_LEVEL ): JSON_Loader(LOG_LEVEL ), slog(
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throw ConfigLoadException("Config file not found.");
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}
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if (this->get_serialized(this->config_version, "config_version" ) != 0)
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{
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throw ConfigLoadException("config_version string is not set in the config file supplied: " + filename);
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}
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if ( this->config_version.asString() != VERSION_STRING )
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{
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throw ConfigLoadException("config_version string expected was " + std::string(VERSION_STRING) + " in: " + filename);
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}
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// find the path to the unit definitions file
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if (this->get_serialized(this->units_path, "units_path" ) != 0 )
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{
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throw ConfigLoadException("units_path string is not set in the config file supplied: " + filename);
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if (this->get_string(jval_s, "units_path") != 0 )
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{ throw ConfigLoadException("units_path string is not set in the config file supplied: " + filename); } else {
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this->units_path = jval_s;
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}
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jval_s = {0};
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// find the path to logs directory
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if (this->get_serialized(this->logs_path, "logs_path" ) != 0 )
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{
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throw ConfigLoadException("logs_path string is not set in the config file supplied: " + filename);
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if (this->get_string(jval_s, "logs_path") != 0 )
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{ throw ConfigLoadException("logs_path string is not set in the config file supplied: " + filename); } else {
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this->logs_path = jval_s;
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}
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jval_s = {0};
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if ( this->get_serialized(this->override_execution_context, "execution_context_override" ) != 0 )
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{
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throw ConfigLoadException("execution_context_override boolean is not set in the config file supplied: " + filename);
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} else {
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this->override_context = true;
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if (this->get_bool(jval_b, "execution_context_override") != 0 )
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{ throw ConfigLoadException("execution_context_override boolean is not set in the config file supplied: " + filename); } else {
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this->override_context = jval_b;
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}
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jval_b = {0};
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if ( this->get_serialized(this->execution_context, "execution_context" ) != 0 )
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{
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throw ConfigLoadException("execution_context string is not set in the config file supplied: " + filename);
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} else {
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if ( is_dir( this->execution_context.asString() ) ) {
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this->execution_context_literal = this->execution_context.asString();
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} else {
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throw ConfigLoadException( "The execution context supplied is an invalid directory.");
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if (this->get_string(jval_s, "execution_context") != 0 )
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{ throw ConfigLoadException("execution_context string is not set in the config file supplied: " + filename); } else {
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if ( ! is_dir( jval_s ) ) { throw ConfigLoadException( "The execution context supplied is an invalid directory."); } else {
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this->execution_context = jval_s;
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}
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}
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jval_s = {0};
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interpolate( this->units_path );
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interpolate( this->logs_path );
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interpolate( this->execution_context );
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};
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/// Conf::has_context_override - Specifies whether or not the override context function is enabled in the Conf file.
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bool Conf::has_context_override() {
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return this->override_execution_context.asBool();
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return this->override_execution_context;
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}
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/// Conf::get_execution_context - Specifies the path to the current working directory to set for all unit executions.
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std::string Conf::get_execution_context() {
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return this->execution_context_literal;
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return this->execution_context;
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}
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/// Conf::get_units_path - Retrieves the path to the Unit definition file from the application configuration file.
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std::string Conf::get_units_path() { return this->units_path.asString(); }
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std::string Conf::get_units_path() { return this->units_path; }
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/// Conf::get_units_path - Retrieves the path to the Unit definition file from the application configuration file.
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std::string Conf::get_logs_path() { return this->logs_path.asString(); }
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std::string Conf::get_logs_path() { return this->logs_path; }
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/// Conf::set_execution_context- Sets the execution context.
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void Conf::set_execution_context(std::string execution_context )
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{
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this->execution_context_literal = execution_context;
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this->execution_context = execution_context;
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}
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@ -28,25 +28,23 @@
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#define STRINGIZE2(s) #s
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#define STRINGIZE(s) STRINGIZE2(s)
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# define IMPL_CONFIG_VERSION 4
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# define IMPL_CONFIG_VERSION 5
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# define VERSION_STRING STRINGIZE(IMPL_CONFIG_VERSION)
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class Conf: public JSON_Loader
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{
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private:
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Json::Value plan_path;
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Json::Value units_path;
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Json::Value execution_context;
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Json::Value config_version;
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Json::Value logs_path;
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std::string plan_path;
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std::string units_path;
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std::string execution_context;
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std::string logs_path;
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// flag to indicate if execution context should be overriden in config file
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// if set to true rex should use whats in the config file for current working directory
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// if set to false, rex should use the current working directory at time of execution
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Json::Value override_execution_context;
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bool override_execution_context;
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bool override_context;
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std::string execution_context_literal;
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public:
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Conf( std::string filename, int LOG_LEVEL );
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@ -150,3 +150,57 @@ int JSON_Loader::get_serialized(Json::Value &input, std::string key )
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// exit code for failure
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return 1;
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}
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/// JSON_Loader::get_string - assigns the serialized representation of the value of a key (json::value)
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///
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/// \param input - A reference to the json::value object to receive the new value.
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/// \param key - The JSON key name to assign the value to (the root of the json::value object by name)
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/// \param verbose - Whether or not to print verbose output to STDOUT.
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/// \return - Boolean indicator of success or failure (0|1)
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int JSON_Loader::get_string( std::string &input, std::string key )
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{
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// throw if the class is not ready to be used.
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if ( ! this->populated ) { throw JSON_Loader_NotReady(); }
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if ( this->json_root.isMember( key ) )
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{
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// key was found so return it to the passed input ref
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input = this->json_root[ key ].asString();
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return 0;
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}
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// key was not found
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// verbose mode tells the user what key we were looking for.
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this->slog.log( E_FATAL, "Failed to find key '" + key + "'." );
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// exit code for failure
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return 1;
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}
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/// JSON_Loader::get_bool - assigns the serialized representation of the value of a key (json::value)
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///
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/// \param input - A reference to the json::value object to receive the new value.
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/// \param key - The JSON key name to assign the value to (the root of the json::value object by name)
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/// \param verbose - Whether or not to print verbose output to STDOUT.
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/// \return - Boolean indicator of success or failure (0|1)
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int JSON_Loader::get_bool( bool & input, std::string key )
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{
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// throw if the class is not ready to be used.
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if ( ! this->populated ) { throw JSON_Loader_NotReady(); }
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if ( this->json_root.isMember( key ) )
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{
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// key was found so return it to the passed input ref
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input = this->json_root[ key ].asBool();
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return 0;
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}
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// key was not found
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// verbose mode tells the user what key we were looking for.
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this->slog.log( E_FATAL, "Failed to find key '" + key + "'." );
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// exit code for failure
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return 1;
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}
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@ -51,6 +51,8 @@ class JSON_Loader
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// safely handle deserialized type retrieval (if we want it to be safe)
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int get_serialized( Json::Value & input, std::string key );
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int get_string(std::string & input, std::string key );
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int get_bool(bool & input, std::string key );
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private:
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Logger slog;
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@ -57,3 +57,16 @@ std::string get_8601()
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ss << std::put_time(localtime(&itt), "%Y-%m-%d_%H:%M:%S");
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return ss.str();
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}
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void interpolate( std::string & text )
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{
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static std::regex env( "\\$\\{([^}]+)\\}" );
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std::smatch match;
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while ( std::regex_search( text, match, env ) )
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{
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const char * s = getenv( match[1].str().c_str() );
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const std::string var( s == NULL ? "" : s );
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text.replace( match[0].first, match[0].second, var );
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}
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}
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@ -32,14 +32,22 @@
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#include <iomanip>
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#include <sstream>
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#include <vector>
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#include <regex>
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bool exists (const std::string& name);
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std::string get_working_path();
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bool is_file( std::string );
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bool is_dir( std::string );
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// expand environment variables in string
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void interpolate( std::string & text);
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std::string get_8601();
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const char * command2args( std::string input_string );
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#endif //REX_HELPERS_JH
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