64 lines
2.7 KiB
Python
64 lines
2.7 KiB
Python
#
|
|
# MIT License
|
|
#
|
|
# Copyright (c) 2020 Airbyte
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
# of this software and associated documentation files (the "Software"), to deal
|
|
# in the Software without restriction, including without limitation the rights
|
|
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
# copies of the Software, and to permit persons to whom the Software is
|
|
# furnished to do so, subject to the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included in all
|
|
# copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
# SOFTWARE.
|
|
#
|
|
|
|
|
|
import json
|
|
from abc import ABC, abstractmethod
|
|
from collections import defaultdict
|
|
from typing import Any, Dict, Iterable, Mapping, MutableMapping
|
|
|
|
from airbyte_cdk.connector import Connector
|
|
from airbyte_cdk.logger import AirbyteLogger
|
|
from airbyte_cdk.models import AirbyteCatalog, AirbyteMessage, ConfiguredAirbyteCatalog
|
|
|
|
|
|
class Source(Connector, ABC):
|
|
# can be overridden to change an input state
|
|
def read_state(self, state_path: str) -> Dict[str, Any]:
|
|
if state_path:
|
|
state_obj = json.loads(open(state_path, "r").read())
|
|
else:
|
|
state_obj = {}
|
|
state = defaultdict(dict, state_obj)
|
|
return state
|
|
|
|
# can be overridden to change an input catalog
|
|
def read_catalog(self, catalog_path: str) -> ConfiguredAirbyteCatalog:
|
|
return ConfiguredAirbyteCatalog.parse_obj(self.read_config(catalog_path))
|
|
|
|
@abstractmethod
|
|
def read(
|
|
self, logger: AirbyteLogger, config: Mapping[str, Any], catalog: ConfiguredAirbyteCatalog, state: MutableMapping[str, Any] = None
|
|
) -> Iterable[AirbyteMessage]:
|
|
"""
|
|
Returns a generator of the AirbyteMessages generated by reading the source with the given configuration, catalog, and state.
|
|
"""
|
|
|
|
@abstractmethod
|
|
def discover(self, logger: AirbyteLogger, config: Mapping[str, Any]) -> AirbyteCatalog:
|
|
"""
|
|
Returns an AirbyteCatalog representing the available streams and fields in this integration. For example, given valid credentials to a
|
|
Postgres database, returns an Airbyte catalog where each postgres table is a stream, and each table column is a field.
|
|
"""
|