72 lines
2.6 KiB
Python
72 lines
2.6 KiB
Python
import psycopg as pg
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from psycopg.rows import dict_row
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from .connection import g_conn_dict as conn
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# no undo/redo
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_server_databases = ['template0', 'template1', 'postgres', 'project']
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def list_project() -> list[str]:
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ps = []
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with pg.connect(conninfo="dbname=postgres host=127.0.0.1", autocommit=True) as conn:
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with conn.cursor(row_factory=dict_row) as cur:
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for p in cur.execute(f"select datname from pg_database where datname <> 'postgres' and datname <> 'template0' and datname <> 'template1' and datname <> 'project'"):
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ps.append(p['datname'])
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return ps
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def have_project(name: str) -> bool:
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with pg.connect(conninfo="dbname=postgres host=127.0.0.1", autocommit=True) as conn:
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with conn.cursor() as cur:
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cur.execute(f"select * from pg_database where datname = '{name}'")
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return cur.rowcount > 0
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def copy_project(source: str, new: str) -> None:
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with pg.connect(conninfo="dbname=postgres host=127.0.0.1", autocommit=True) as conn:
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with conn.cursor() as cur:
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cur.execute(f'create database "{new}" with template = {source}')
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def create_project(name: str) -> None:
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return copy_project('project', name)
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def delete_project(name: str) -> None:
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with pg.connect(conninfo="dbname=postgres host=127.0.0.1", autocommit=True) as conn:
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with conn.cursor() as cur:
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cur.execute(f"select pg_terminate_backend(pid) from pg_stat_activity where datname = '{name}'")
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cur.execute(f'drop database "{name}"')
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def clean_project(excluded: list[str] = []) -> None:
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projects = list_project()
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with pg.connect(conninfo="dbname=postgres host=127.0.0.1", autocommit=True) as conn:
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with conn.cursor(row_factory=dict_row) as cur:
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row = cur.execute(f"select current_database()").fetchone()
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if row != None:
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current_db = row['current_database']
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if current_db in projects:
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projects.remove(current_db)
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for project in projects:
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if project in _server_databases or project in excluded:
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continue
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cur.execute(f"select pg_terminate_backend(pid) from pg_stat_activity where datname = '{project}'")
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cur.execute(f'drop database "{project}"')
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def open_project(name: str) -> None:
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if name not in conn:
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conn[name] = pg.connect(conninfo=f"dbname={name} host=127.0.0.1", autocommit=True)
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def is_project_open(name: str) -> bool:
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return name in conn
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def close_project(name: str) -> None:
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if name in conn:
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conn[name].close()
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del conn[name]
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