mirror of https://github.com/dbcli/pgcli
59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
from .main import PGCli
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import sql.parse
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import sql.connection
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import logging
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_logger = logging.getLogger(__name__)
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def load_ipython_extension(ipython):
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#This is called via the ipython command '%load_ext pgcli.magic'
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#first, load the sql magic if it isn't already loaded
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if not ipython.find_line_magic('sql'):
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ipython.run_line_magic('load_ext', 'sql')
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#register our own magic
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ipython.register_magic_function(pgcli_line_magic, 'line', 'pgcli')
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def pgcli_line_magic(line):
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_logger.debug('pgcli magic called: %r', line)
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parsed = sql.parse.parse(line, {})
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conn = sql.connection.Connection.get(parsed['connection'])
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try:
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#A corresponding pgcli object already exists
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pgcli = conn._pgcli
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_logger.debug('Reusing existing pgcli')
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except AttributeError:
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#I can't figure out how to get the underylying psycopg2 connection
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#from the sqlalchemy connection, so just grab the url and make a
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#new connection
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pgcli = PGCli()
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u = conn.session.engine.url
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_logger.debug('New pgcli: %r', str(u))
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pgcli.connect(u.database, u.host, u.username, u.port, u.password)
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conn._pgcli = pgcli
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#For convenience, print the connection alias
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print('Connected: {}'.format(conn.name))
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try:
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pgcli.run_cli()
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except SystemExit:
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pass
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if not pgcli.query_history:
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return
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q = pgcli.query_history[-1]
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if q.mutating:
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_logger.debug('Mutating query detected -- ignoring')
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return
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if q.successful:
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ipython = get_ipython()
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return ipython.run_cell_magic('sql', line, q.query)
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