"""
The `szconfigmanager` package is used to modify Senzing configurations in the Senzing database.
It is a wrapper over Senzing's SzConfigMgr C binding.
It conforms to the interface specified in
`szconfigmanager_abstract.py <https://github.com/senzing-garage/sz-sdk-python-core/blob/main/src/senzing_abstract/szconfigmanager_abstract.py>`_
To use szconfigmanager,
the **LD_LIBRARY_PATH** environment variable must include a path to Senzing's libraries.
Example:
.. code-block:: bash
export LD_LIBRARY_PATH=/opt/senzing/er/lib
"""
# pylint: disable=R0903
from ctypes import POINTER, Structure, c_char, c_char_p, c_longlong, c_void_p
from functools import partial
from typing import Any, Dict, Union
from senzing import SzConfigManager
from ._helpers import (
FreeCResources,
as_c_char_p,
as_python_str,
as_str,
catch_non_sz_exceptions,
check_result_rc,
load_sz_library,
)
from ._version import is_supported_senzingapi_version
# Metadata
__all__ = ["SzConfigManagerCore"]
__version__ = "0.0.1" # See https://www.python.org/dev/peps/pep-0396/
__date__ = "2023-10-30"
__updated__ = "2025-01-17"
# -----------------------------------------------------------------------------
# Classes that are result structures from calls to Senzing
# -----------------------------------------------------------------------------
class SzResponseReturnCodeResult(Structure):
"""Simple response, return_code structure"""
_fields_ = [
("response", POINTER(c_char)),
("return_code", c_longlong),
]
class SzResponseLonglongReturnCodeResult(Structure):
"""Simple response, return_code structure"""
_fields_ = [
("response", c_longlong),
("return_code", c_longlong),
]
class SzConfigMgrAddConfigResult(SzResponseLonglongReturnCodeResult):
"""In SzLang_helpers.h SzConfigMgr_addConfig_result"""
class SzConfigMgrGetConfigListResult(SzResponseReturnCodeResult):
"""In SzLang_helpers.h SzConfigMgr_getConfigList_result"""
class SzConfigMgrGetConfigResult(SzResponseReturnCodeResult):
"""In SzLang_helpers.h SzConfigMgr_getConfig_result"""
class SzConfigMgrGetDefaultConfigIDResult(SzResponseLonglongReturnCodeResult):
"""In SzLang_helpers.h SzConfigMgr_getDefaultConfigID_result"""
# -----------------------------------------------------------------------------
# SzConfigManagerCore class
# -----------------------------------------------------------------------------
[docs]
class SzConfigManagerCore(SzConfigManager):
"""
Use SzAbstractFactoryCore.create_configmanager() to create an SzConfigManager object.
The SzConfigManager object uses the parameters provided to SzAbstractFactoryCore().
Example:
.. code-block:: python
from senzing_core import SzAbstractFactoryCore
sz_abstract_factory = SzAbstractFactoryCore(instance_name, settings)
sz_config_manager = sz_abstract_factory.create_configmanager()
Parameters:
Raises:
"""
# TODO: Consider making usual constructor private (`SzConfig.SzConfig()`)
# and replacing it with static constructor (i.e. `SzConfig.NewABC(str,str)`, `SzConfig.NewDEF(str,dict))`
# -------------------------------------------------------------------------
# Python dunder/magic methods
# -------------------------------------------------------------------------
def __init__(self, **kwargs: Any) -> None:
"""
Constructor
For return value of -> None, see https://peps.python.org/pep-0484/#the-meaning-of-annotations
"""
_ = kwargs
# Determine if Senzing API version is acceptable.
is_supported_senzingapi_version()
# Load binary library.
self.library_handle = load_sz_library()
# Partial function to use this modules self.library_handle for exception handling
self.check_result = partial(
check_result_rc,
self.library_handle.SzConfigMgr_getLastException,
self.library_handle.SzConfigMgr_clearLastException,
self.library_handle.SzConfigMgr_getLastExceptionCode,
)
# Initialize C function input parameters and results.
# Synchronized with er/sdk/c/libSzConfigMgr.h
self.library_handle.SzConfigMgr_addConfig_helper.argtypes = [c_char_p, c_char_p]
self.library_handle.SzConfigMgr_addConfig_helper.restype = SzConfigMgrAddConfigResult
self.library_handle.SzConfigMgr_destroy.argtypes = []
self.library_handle.SzConfigMgr_destroy.restype = c_longlong
self.library_handle.SzConfigMgr_getConfig_helper.argtypes = [c_longlong]
self.library_handle.SzConfigMgr_getConfig_helper.restype = SzConfigMgrGetConfigResult
self.library_handle.SzConfigMgr_getConfigList_helper.argtypes = []
self.library_handle.SzConfigMgr_getConfigList_helper.restype = SzConfigMgrGetConfigListResult
self.library_handle.SzConfigMgr_getDefaultConfigID_helper.restype = SzConfigMgrGetDefaultConfigIDResult
self.library_handle.SzConfigMgr_init.argtypes = [c_char_p, c_char_p, c_longlong]
self.library_handle.SzConfigMgr_init.restype = c_longlong
self.library_handle.SzConfigMgr_replaceDefaultConfigID.argtypes = [
c_longlong,
c_longlong,
]
self.library_handle.SzConfigMgr_replaceDefaultConfigID.restype = c_longlong
self.library_handle.SzConfigMgr_setDefaultConfigID.argtypes = [c_longlong]
self.library_handle.SzConfigMgr_setDefaultConfigID.restype = c_longlong
self.library_handle.SzHelper_free.argtypes = [c_void_p]
def __del__(self) -> None:
"""Destructor"""
# -------------------------------------------------------------------------
# SzConfigManager methods
# -------------------------------------------------------------------------
[docs]
@catch_non_sz_exceptions
def add_config(
self,
config_definition: str,
config_comment: str,
) -> int:
result = self.library_handle.SzConfigMgr_addConfig_helper(
as_c_char_p(config_definition),
as_c_char_p(config_comment),
)
self.check_result(result.return_code)
return result.response # type: ignore[no-any-return]
def _destroy(
self,
) -> None:
_ = self.library_handle.SzConfigMgr_destroy()
[docs]
@catch_non_sz_exceptions
def get_config(self, config_id: int) -> str:
result = self.library_handle.SzConfigMgr_getConfig_helper(config_id)
with FreeCResources(self.library_handle, result.response):
self.check_result(result.return_code)
return as_python_str(result.response)
[docs]
def get_configs(self) -> str:
result = self.library_handle.SzConfigMgr_getConfigList_helper()
with FreeCResources(self.library_handle, result.response):
self.check_result(result.return_code)
return as_python_str(result.response)
[docs]
def get_default_config_id(self) -> int:
result = self.library_handle.SzConfigMgr_getDefaultConfigID_helper()
self.check_result(result.return_code)
return result.response # type: ignore[no-any-return]
@catch_non_sz_exceptions
def _initialize(
self,
instance_name: str,
settings: Union[str, Dict[Any, Any]],
verbose_logging: int = 0,
) -> None:
result = self.library_handle.SzConfigMgr_init(
as_c_char_p(instance_name),
as_c_char_p(as_str(settings)),
verbose_logging,
)
self.check_result(result)
[docs]
@catch_non_sz_exceptions
def replace_default_config_id(
self,
current_default_config_id: int,
new_default_config_id: int,
) -> None:
result = self.library_handle.SzConfigMgr_replaceDefaultConfigID(
current_default_config_id, new_default_config_id
)
self.check_result(result)
[docs]
@catch_non_sz_exceptions
def set_default_config_id(self, config_id: int) -> None:
result = self.library_handle.SzConfigMgr_setDefaultConfigID(config_id)
self.check_result(result)