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pyconfigoptions.cpp
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181 lines (163 loc) · 5.58 KB
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/*
* BSD 2-Clause License
*
* Copyright (c) 2021-2024, Hewlett Packard Enterprise
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "pyconfigoptions.h"
#include "srexception.h"
using namespace SmartRedis;
namespace py = pybind11;
// Decorator to standardize exception handling in PyBind Client API methods
template <class T>
auto pb_cfgopt_api(T&& cfgopt_api_func, const char* name)
{
// we create a closure below
auto decorated =
[name, cfgopt_api_func = std::forward<T>(cfgopt_api_func)](auto&&... args)
{
try {
return cfgopt_api_func(std::forward<decltype(args)>(args)...);
}
catch (Exception& e) {
// exception is already prepared for caller
throw;
}
catch (std::exception& e) {
// should never happen
throw SRInternalException(e.what());
}
catch (...) {
// should never happen
std::string msg(
"A non-standard exception was encountered while executing ");
msg += name;
throw SRInternalException(msg);
}
};
return decorated;
}
// Macro to invoke the decorator with a lambda function
#define MAKE_CFGOPT_API(stuff)\
pb_cfgopt_api([&] { stuff }, __func__)()
PyConfigOptions::PyConfigOptions()
{
MAKE_CFGOPT_API({
_configoptions = NULL;
});
}
PyConfigOptions::PyConfigOptions(ConfigOptions* configoptions)
{
_configoptions = configoptions;
}
PyConfigOptions::~PyConfigOptions()
{
MAKE_CFGOPT_API({
if (_configoptions != NULL) {
delete _configoptions;
_configoptions = NULL;
}
});
}
ConfigOptions* PyConfigOptions::get() {
return _configoptions;
}
// Instantiate ConfigOptions from environment variables
PyConfigOptions* PyConfigOptions::create_from_environment(
const std::string& db_suffix)
{
return MAKE_CFGOPT_API({
auto cfgOpts = ConfigOptions::create_from_environment(db_suffix);
ConfigOptions* pCfgOpts = cfgOpts.release();
return new PyConfigOptions(pCfgOpts);
});
}
// Retrieve the value of a numeric configuration option
// from the selected source
int64_t PyConfigOptions::get_integer_option(const std::string& option_name)
{
return MAKE_CFGOPT_API({
if (_configoptions == NULL) {
throw SRRuntimeException(
"Attempted to call get_integer_option "\
"from a non-factory constructed ConfigOptions");
}
return _configoptions->get_integer_option(option_name);
});
}
// Retrieve the value of a string configuration option
// from the selected source
std::string PyConfigOptions::get_string_option(const std::string& option_name)
{
return MAKE_CFGOPT_API({
if (_configoptions == NULL) {
throw SRRuntimeException(
"Attempted to call get_string_option "\
"from a non-factory constructed ConfigOptions");
}
return _configoptions->get_string_option(option_name);
});
}
// Check whether a configuration option is set in the
// selected source
bool PyConfigOptions::is_configured(const std::string& option_name)
{
return MAKE_CFGOPT_API({
if (_configoptions == NULL) {
throw SRRuntimeException(
"Attempted to call is_defined "\
"from a non-factory constructed ConfigOptions");
}
return _configoptions->is_configured(option_name);
});
}
// Override the value of a numeric configuration option
// in the selected source
void PyConfigOptions::override_integer_option(
const std::string& option_name, int64_t value)
{
MAKE_CFGOPT_API({
if (_configoptions == NULL) {
throw SRRuntimeException(
"Attempted to call override_integer_option "\
"from a non-factory constructed ConfigOptions");
}
_configoptions->override_integer_option(option_name, value);
});
}
// Override the value of a string configuration option
// in the selected source
void PyConfigOptions::override_string_option(
const std::string& option_name, const std::string& value)
{
MAKE_CFGOPT_API({
if (_configoptions == NULL) {
throw SRRuntimeException(
"Attempted to call override_string_option "\
"from a non-factory constructed ConfigOptions");
}
_configoptions->override_string_option(option_name, value);
});
}
// EOF