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"""SQLAlchemy Metadata and Session object"""
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import scoped_session, sessionmaker
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from rhodecode.model import caching_query
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from beaker import cache
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import os
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from os.path import join as jn, dirname as dn, abspath
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import time
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# Beaker CacheManager. A home base for cache configurations.
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cache_manager = cache.CacheManager()
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__all__ = ['Base', 'Session']
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#
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# SQLAlchemy session manager. Updated by model.init_model()
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#
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Session = scoped_session(
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sessionmaker(
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query_cls=caching_query.query_callable(cache_manager)
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)
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)
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# The declarative Base
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Base = declarative_base()
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#For another db...
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#Base2 = declarative_base()
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#===============================================================================
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# CACHE OPTIONS
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#===============================================================================
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cache_dir = jn(dn(dn(dn(abspath(__file__)))), 'data', 'cache')
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if not os.path.isdir(cache_dir):
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os.mkdir(cache_dir)
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# set start_time to current time
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# to re-cache everything
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# upon application startup
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start_time = time.time()
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# configure the "sqlalchemy" cache region.
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cache_manager.regions['sql_cache_short'] = {
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'type':'memory',
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'data_dir':cache_dir,
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'expire':10,
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'start_time':start_time
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}
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cache_manager.regions['sql_cache_med'] = {
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'type':'memory',
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'data_dir':cache_dir,
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'expire':360,
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'start_time':start_time
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}
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cache_manager.regions['sql_cache_long'] = {
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'type':'file',
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'data_dir':cache_dir,
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'expire':3600,
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'start_time':start_time
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}
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#to use cache use this in query
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#.options(FromCache("sqlalchemy_cache_type", "cachekey"))
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