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Only commit db when changes

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This commit is contained in:
angelblue05 2016-11-04 06:39:49 -05:00
parent 83ab855999
commit ee80e2c763
1 changed files with 7 additions and 4 deletions
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11
resources/lib/database.py
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@ -48,7 +48,7 @@ def music_database():
class DatabaseConn(object): class DatabaseConn(object):
# To be called as context manager - i.e. with DatabaseConn() as dbconn # To be called as context manager - i.e. with DatabaseConn() as conn: #dostuff
def __init__(self, database_file="video", commit_mode="", timeout=20): def __init__(self, database_file="video", commit_mode="", timeout=20):
""" """
@ -62,7 +62,7 @@ class DatabaseConn(object):
def __enter__(self): def __enter__(self):
# Open the connection # Open the connection
self.path = self._SQL(self.db_file) self.path = self._SQL(self.db_file)
log.warn("opening database: %s", self.path) log.info("opening database: %s", self.path)
self.conn = sqlite3.connect(self.path, self.conn = sqlite3.connect(self.path,
isolation_level=self.commit_mode, isolation_level=self.commit_mode,
timeout=self.timeout) timeout=self.timeout)
@ -83,6 +83,8 @@ class DatabaseConn(object):
def __exit__(self, exc_type, exc_val, exc_tb): def __exit__(self, exc_type, exc_val, exc_tb):
# Close the connection # Close the connection
changes = self.conn.total_changes
if exc_type is not None: if exc_type is not None:
# Errors were raised in the with statement # Errors were raised in the with statement
log.error("rollback: Type: %s Value: %s", exc_type, exc_val) log.error("rollback: Type: %s Value: %s", exc_type, exc_val)
@ -90,8 +92,9 @@ class DatabaseConn(object):
if not "database is locked" in exc_val: if not "database is locked" in exc_val:
raise raise
elif self.commit_mode is not None: elif self.commit_mode is not None and changes:
log.warn("commit: %s", self.path) log.info("number of rows updated: %s", changes)
self.conn.commit() self.conn.commit()
log.info("close: %s", self.path)
self.conn.close() self.conn.close()