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Configuration.cpp
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// matth-x/MicroOcpp
// Copyright Matthias Akstaller 2019 - 2024
// MIT License
#include <MicroOcpp/Core/Configuration.h>
#include <MicroOcpp/Core/ConfigurationContainerFlash.h>
#include <MicroOcpp/Core/Memory.h>
#include <MicroOcpp/Debug.h>
#include <string.h>
#include <algorithm>
#include <ArduinoJson.h>
namespace MicroOcpp {
struct Validator {
const char *key = nullptr;
std::function<bool(const char*)> checkValue;
Validator(const char *key, std::function<bool(const char*)> checkValue) : key(key), checkValue(checkValue) {
}
};
namespace ConfigurationLocal {
std::shared_ptr<FilesystemAdapter> filesystem;
auto configurationContainers = makeVector<std::shared_ptr<ConfigurationContainer>>("v16.Configuration.Containers");
auto validators = makeVector<Validator>("v16.Configuration.Validators");
}
using namespace ConfigurationLocal;
std::unique_ptr<ConfigurationContainer> createConfigurationContainer(const char *filename, bool accessible) {
//create non-persistent Configuration store (i.e. lives only in RAM) if
// - Flash FS usage is switched off OR
// - Filename starts with "/volatile"
if (!filesystem ||
!strncmp(filename, CONFIGURATION_VOLATILE, strlen(CONFIGURATION_VOLATILE))) {
return makeConfigurationContainerVolatile(filename, accessible);
} else {
//create persistent Configuration store. This is the normal case
return makeConfigurationContainerFlash(filesystem, filename, accessible);
}
}
void addConfigurationContainer(std::shared_ptr<ConfigurationContainer> container) {
configurationContainers.push_back(container);
}
std::shared_ptr<ConfigurationContainer> getContainer(const char *filename) {
auto container = std::find_if(configurationContainers.begin(), configurationContainers.end(),
[filename](decltype(configurationContainers)::value_type &elem) {
return !strcmp(elem->getFilename(), filename);
});
if (container != configurationContainers.end()) {
return *container;
} else {
return nullptr;
}
}
ConfigurationContainer *declareContainer(const char *filename, bool accessible) {
auto container = getContainer(filename);
if (!container) {
MO_DBG_DEBUG("init new configurations container: %s", filename);
container = createConfigurationContainer(filename, accessible);
if (!container) {
MO_DBG_ERR("OOM");
return nullptr;
}
configurationContainers.push_back(container);
}
if (container->isAccessible() != accessible) {
MO_DBG_ERR("%s: conflicting accessibility declarations (expect %s)", filename, container->isAccessible() ? "accessible" : "inaccessible");
}
return container.get();
}
std::shared_ptr<Configuration> loadConfiguration(TConfig type, const char *key, bool accessible) {
for (auto& container : configurationContainers) {
if (auto config = container->getConfiguration(key)) {
if (config->getType() != type) {
MO_DBG_ERR("conflicting type for %s - remove old config", key);
container->remove(config.get());
continue;
}
if (container->isAccessible() != accessible) {
MO_DBG_ERR("conflicting accessibility for %s", key);
}
container->loadStaticKey(*config.get(), key);
return config;
}
}
return nullptr;
}
template<class T>
bool loadFactoryDefault(Configuration& config, T loadFactoryDefault);
template<>
bool loadFactoryDefault<int>(Configuration& config, int factoryDef) {
config.setInt(factoryDef);
return true;
}
template<>
bool loadFactoryDefault<bool>(Configuration& config, bool factoryDef) {
config.setBool(factoryDef);
return true;
}
template<>
bool loadFactoryDefault<const char*>(Configuration& config, const char *factoryDef) {
return config.setString(factoryDef);
}
void loadPermissions(Configuration& config, bool readonly, bool rebootRequired) {
if (readonly) {
config.setReadOnly();
}
if (rebootRequired) {
config.setRebootRequired();
}
}
template<class T>
std::shared_ptr<Configuration> declareConfiguration(const char *key, T factoryDef, const char *filename, bool readonly, bool rebootRequired, bool accessible) {
std::shared_ptr<Configuration> res = loadConfiguration(convertType<T>(), key, accessible);
if (!res) {
auto container = declareContainer(filename, accessible);
if (!container) {
return nullptr;
}
res = container->createConfiguration(convertType<T>(), key);
if (!res) {
return nullptr;
}
if (!loadFactoryDefault(*res.get(), factoryDef)) {
container->remove(res.get());
return nullptr;
}
}
loadPermissions(*res.get(), readonly, rebootRequired);
return res;
}
template std::shared_ptr<Configuration> declareConfiguration<int>(const char *key, int factoryDef, const char *filename, bool readonly, bool rebootRequired, bool accessible);
template std::shared_ptr<Configuration> declareConfiguration<bool>(const char *key, bool factoryDef, const char *filename, bool readonly, bool rebootRequired, bool accessible);
template std::shared_ptr<Configuration> declareConfiguration<const char*>(const char *key, const char *factoryDef, const char *filename, bool readonly, bool rebootRequired, bool accessible);
std::function<bool(const char*)> *getConfigurationValidator(const char *key) {
for (auto& v : validators) {
if (!strcmp(v.key, key)) {
return &v.checkValue;
}
}
return nullptr;
}
void registerConfigurationValidator(const char *key, std::function<bool(const char*)> validator) {
for (auto& v : validators) {
if (!strcmp(v.key, key)) {
v.checkValue = validator;
return;
}
}
validators.push_back(Validator{key, validator});
}
Configuration *getConfigurationPublic(const char *key) {
for (auto& container : configurationContainers) {
if (container->isAccessible()) {
if (auto res = container->getConfiguration(key)) {
return res.get();
}
}
}
return nullptr;
}
Vector<ConfigurationContainer*> getConfigurationContainersPublic() {
auto res = makeVector<ConfigurationContainer*>("v16.Configuration.Containers");
for (auto& container : configurationContainers) {
if (container->isAccessible()) {
res.push_back(container.get());
}
}
return res;
}
bool configuration_init(std::shared_ptr<FilesystemAdapter> _filesystem) {
filesystem = _filesystem;
return true;
}
void configuration_deinit() {
makeVector<decltype(configurationContainers)::value_type>("v16.Configuration.Containers").swap(configurationContainers); //release allocated memory (see https://cplusplus.com/reference/vector/vector/clear/)
makeVector<decltype(validators)::value_type>("v16.Configuration.Validators").swap(validators);
filesystem.reset();
}
bool configuration_load(const char *filename) {
bool success = true;
for (auto& container : configurationContainers) {
if ((!filename || !strcmp(filename, container->getFilename())) && !container->load()) {
success = false;
}
}
return success;
}
bool configuration_save() {
bool success = true;
for (auto& container : configurationContainers) {
if (!container->save()) {
success = false;
}
}
return success;
}
bool configuration_clean_unused() {
for (auto& container : configurationContainers) {
container->removeUnused();
}
return configuration_save();
}
bool VALIDATE_UNSIGNED_INT(const char *value) {
for(size_t i = 0; value[i] != '\0'; i++) {
if (value[i] < '0' || value[i] > '9') {
return false;
}
}
return true;
}
} //end namespace MicroOcpp