Harwinder Sekhon
083a4e8d63
One class per provider (TwelveData, Oanda, Tiingo), all subclassing BaseDataProvider which owns cache, validation/cleaning, freshness + boundary guarantees, fetch_range pagination, and streaming stubs — subclasses implement only _fetch_raw. config.json data_providers.active selects the live feed; data_provider.py / oanda_provider.py stay as back-compat shims. Module 16 provider-abstraction tests (253 total green). Claude-Session: https://claude.ai/code/session_01Mc7XKYyPySVXiUpcN82QEK
55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
"""
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ForexBot2 — Data-provider package
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==================================
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One class per provider, all subclassing `BaseDataProvider` (which owns
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caching, validation, boundary guarantees, and range pagination — the
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behavior the signal pipeline depends on).
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Adding a provider = one module implementing `_fetch_raw` + one registry
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entry + one config.json `data_providers` block. The live feed is selected
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by config.json `data_providers.active`; registration alone changes
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nothing.
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"""
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from typing import Dict
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from app_config import AppConfigError, get_app_config
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from config import PlatformConfig
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from providers.base import BaseDataProvider, DataIntegrityError, _is_forex_weekend
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from providers.twelve_data import TwelveDataProvider
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from providers.oanda import OandaDataError, OandaDataProvider
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from providers.tiingo import TiingoDataError, TiingoDataProvider
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#: config.json data_providers.active selects from here.
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PROVIDER_REGISTRY: Dict[str, type] = {
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"twelve_data": TwelveDataProvider,
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"oanda": OandaDataProvider,
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"tiingo": TiingoDataProvider,
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}
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def make_data_provider(config: PlatformConfig) -> BaseDataProvider:
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"""Build the ACTIVE data provider (config.json: data_providers.active)."""
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name = get_app_config().active_provider
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cls = PROVIDER_REGISTRY.get(name)
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if cls is None:
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raise AppConfigError(
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f'Unknown data provider "{name}"; '
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f"registered: {sorted(PROVIDER_REGISTRY)}")
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return cls(config)
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__all__ = [
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"BaseDataProvider",
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"DataIntegrityError",
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"OandaDataError",
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"OandaDataProvider",
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"TiingoDataError",
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"TiingoDataProvider",
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"TwelveDataProvider",
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"PROVIDER_REGISTRY",
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"make_data_provider",
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"_is_forex_weekend",
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]
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