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fix: refine database migration

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This commit is contained in:
Terry Geng 2020-05-14 23:58:03 +08:00
parent 8fdfc90730
commit 7e38c191f6
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GPG Key ID: F982F8EA1DF720E7
1 changed files with 32 additions and 19 deletions
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41
database.py
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@ -8,9 +8,11 @@ import logging
log = logging.getLogger("bot")
class DatabaseError(Exception):
pass
class Condition:
def __init__(self):
self.filler = []
@ -18,6 +20,7 @@ class Condition:
self._limit = 0
self._offset = 0
self._order_by = ""
self._desc = ""
self.has_regex = False
pass
@ -189,9 +192,11 @@ class Condition:
return self
SETTING_DB_VERSION = 2
MUSIC_DB_VERSION = 2
class SettingsDatabase:
def __init__(self, db_path):
self.db_path = db_path
@ -199,7 +204,8 @@ class SettingsDatabase:
def get(self, section, option, **kwargs):
conn = sqlite3.connect(self.db_path)
cursor = conn.cursor()
result = cursor.execute("SELECT value FROM botamusique WHERE section=? AND option=?", (section, option)).fetchall()
result = cursor.execute("SELECT value FROM botamusique WHERE section=? AND option=?",
(section, option)).fetchall()
conn.close()
if len(result) > 0:
@ -230,7 +236,8 @@ class SettingsDatabase:
def has_option(self, section, option):
conn = sqlite3.connect(self.db_path)
cursor = conn.cursor()
result = cursor.execute("SELECT value FROM botamusique WHERE section=? AND option=?", (section, option)).fetchall()
result = cursor.execute("SELECT value FROM botamusique WHERE section=? AND option=?",
(section, option)).fetchall()
conn.close()
if len(result) > 0:
return True
@ -449,7 +456,8 @@ class MusicDatabase:
condition = Condition().and_not_sub_condition(Condition().and_equal('id', 'info'))
results = cursor.execute("SELECT id, type, title, metadata, tags, path, keywords FROM music "
"WHERE id IN (SELECT id FROM music WHERE %s ORDER BY RANDOM() LIMIT ?) ORDER BY RANDOM()"
"WHERE id IN (SELECT id FROM music WHERE %s ORDER BY RANDOM() LIMIT ?) "
"ORDER BY RANDOM()"
% condition.sql(conn), condition.filler + [count]).fetchall()
conn.close()
@ -492,12 +500,10 @@ class DatabaseMigration:
def __init__(self, settings_db: SettingsDatabase, music_db: MusicDatabase):
self.settings_db = settings_db
self.music_db = music_db
self.settings_table_migrate_func = {}
self.settings_table_migrate_func[0] = self.settings_table_migrate_from_0_to_2
self.settings_table_migrate_func[1] = self.settings_table_migrate_from_0_to_2
self.music_table_migrate_func = {}
self.music_table_migrate_func[0] = self.music_table_migrate_from_0_to_1
self.music_table_migrate_func[1] = self.music_table_migrate_from_1_to_2
self.settings_table_migrate_func = {0: self.settings_table_migrate_from_0_to_1,
1: self.settings_table_migrate_from_1_to_2}
self.music_table_migrate_func = {0: self.music_table_migrate_from_0_to_1,
1: self.music_table_migrate_from_1_to_2}
def migrate(self):
self.settings_database_migrate()
@ -517,7 +523,8 @@ class DatabaseMigration:
conn.close()
return
else:
log.info(f"database: migrating from settings table version {current_version} to {SETTING_DB_VERSION}...")
log.info(
f"database: migrating from settings table version {current_version} to {SETTING_DB_VERSION}...")
while current_version < SETTING_DB_VERSION:
log.debug(f"database: migrate step {current_version}/{SETTING_DB_VERSION - 1}")
current_version = self.settings_table_migrate_func[current_version](conn)
@ -603,12 +610,15 @@ class DatabaseMigration:
def create_music_table_version_2(self, conn):
self.create_music_table_version_1(conn)
def settings_table_migrate_from_0_to_2(self, conn):
def settings_table_migrate_from_0_to_1(self, conn):
cursor = conn.cursor()
cursor.execute("DROP TABLE botamusique")
conn.commit()
self.create_settings_table_version_2(conn)
return 2 # return new version number
def settings_table_migrate_from_1_to_2(self, conn):
cursor = conn.cursor()
# move music database into a separated file
if self.has_table('music', conn) and not os.path.exists(self.music_db.db_path):
log.info(f"database: move music db into separated file.")
@ -623,7 +633,10 @@ class DatabaseMigration:
cursor.execute("DETACH DATABASE music_db")
cursor.execute("DROP TABLE music")
return 2
cursor.execute("UPDATE botamusique SET value=2 "
"WHERE section='bot' AND option='db_version'")
return 2 # return new version number
def music_table_migrate_from_0_to_1(self, conn):
cursor = conn.cursor()
@ -640,7 +653,7 @@ class DatabaseMigration:
return 1 # return new version number
def music_table_migrate_from_1_to_2(self, conn):
items_to_update = self.db.query_music(Condition(), conn)
items_to_update = self.music_db.query_music(Condition(), conn)
for item in items_to_update:
item['keywords'] = item['title']
if 'artist' in item:
@ -652,7 +665,7 @@ class DatabaseMigration:
tags.append(tag)
item['tags'] = tags
self.db.insert_music(item)
self.music_db.insert_music(item)
conn.commit()
return 2 # return new version number