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55 lines
1.6 KiB
55 lines
1.6 KiB
5 months ago
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from django.apps import apps
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from orgs.utils import tmp_to_root_org
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__all__ = ['DBTableDataAnalyzer']
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class DBTableDataAnalyzer(object):
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def get_tables_info(self):
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table_models = self.get_all_table_models()
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with tmp_to_root_org():
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table_info = self._fetch_tables_info(table_models)
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return table_info
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def get_all_table_models(self):
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# construct tables models
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table_models = set()
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for model in apps.get_models():
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table_models.add(model)
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for m2m_field in model._meta.many_to_many:
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table_models.add(m2m_field.remote_field.through)
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return table_models
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def _fetch_tables_info(self, table_models):
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"""
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return:
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info = {
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'table_name': {
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'count': 100
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}
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...
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}
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"""
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info = {}
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for table_model in table_models:
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if table_model._meta.proxy == True:
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# skip proxy model
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continue
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count = self._fetch_row_count(table_model)
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data = {
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"count": count
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}
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table_name = table_model._meta.db_table
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info.update({f"{table_name}": data})
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return info
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def _fetch_row_count(self, table_model):
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# fetch table row count
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if hasattr(table_model, 'objects_raw'):
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# use objects_raw to count
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count = table_model.objects_raw.count()
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else:
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count = table_model.objects.count()
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return count
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