chore: snapshot production code before Apple Design UI refinement

2026-09-17 18:05:57 +08:00
parent 9f0a87f49e
commit f7e7176f88
90 changed files with 8990 additions and 328 deletions
@@ -0,0 +1,49 @@
+"""Consistent logical backup of the complete current MySQL database; no DB writes."""
+import gzip, hashlib, json, os, pathlib, time
+import pymysql
+from db_access import connect
+os.umask(0o077)
+root=pathlib.Path('/opt/lingniu-go-native/backups/mileage-reconciliation-20260916')
+root.mkdir(parents=True,exist_ok=True)
+path=root/'database.sql.gz'
+if path.exists(): raise RuntimeError('Backup already exists; do not overwrite')
+c=connect(); manifest={'started_at':time.strftime('%Y-%m-%dT%H:%M:%S%z'),'tables':{}}
+with c.cursor() as q:
+ q.execute('SELECT DATABASE() AS db'); db=q.fetchone()['db'];manifest['database']=db
+ q.execute('SHOW FULL TABLES'); entries=q.fetchall()
+ tables=[list(r.values())[0] for r in entries if list(r.values())[1]=='BASE TABLE']
+ q.execute('SHOW TRIGGERS'); triggers=q.fetchall()
+ q.execute('START TRANSACTION WITH CONSISTENT SNAPSHOT, READ ONLY')
+ def literal(v):
+  if isinstance(v,bytes): return '0x'+v.hex()
+  return c.escape(v)
+ with gzip.open(str(path)+'.partial','wt',encoding='utf-8',compresslevel=3) as f:
+  f.write('SET NAMES utf8mb4;\nSET FOREIGN_KEY_CHECKS=0;\n')
+  for table in tables:
+   q.execute('SHOW CREATE TABLE `'+table+'`');ddl=list(q.fetchone().values())[1]
+   f.write('DROP TABLE IF EXISTS `'+table+'`;\n'+ddl+';\n')
+   q.execute('SHOW COLUMNS FROM `'+table+'`');cols=[r['Field'] for r in q.fetchall() if 'GENERATED' not in r['Extra']]
+   names=','.join('`'+v+'`' for v in cols);count=0
+   with c.cursor(pymysql.cursors.SSCursor) as stream:
+    stream.execute('SELECT '+names+' FROM `'+table+'`')
+    while True:
+     rows=stream.fetchmany(500)
+     if not rows:break
+     f.write('INSERT INTO `'+table+'` ('+names+') VALUES\n'+',\n'.join('('+','.join(literal(v) for v in row)+')' for row in rows)+';\n')
+     count+=len(rows)
+   manifest['tables'][table]=count
+   print(json.dumps({'table':table,'rows':count}),flush=True)
+  for row in entries:
+   if list(row.values())[1]=='VIEW':
+    name=list(row.values())[0];q.execute('SHOW CREATE VIEW `'+name+'`');ddl=q.fetchone()['Create View'];f.write(ddl+';\n')
+  for trigger in triggers:
+   q.execute('SHOW CREATE TRIGGER `'+trigger['Trigger']+'`');ddl=q.fetchone()['SQL Original Statement'];f.write('DELIMITER ;;\n'+ddl+';;\nDELIMITER ;\n')
+  f.write('SET FOREIGN_KEY_CHECKS=1;\n')
+c.rollback();c.close()
+os.rename(str(path)+'.partial',path)
+h=hashlib.sha256()
+with path.open('rb') as f:
+ for block in iter(lambda:f.read(1024*1024),b''):h.update(block)
+manifest.update(sha256=h.hexdigest(),bytes=path.stat().st_size,finished_at=time.strftime('%Y-%m-%dT%H:%M:%S%z'))
+(root/'manifest.json').write_text(json.dumps(manifest,indent=2))
+print(json.dumps({'complete':True,'bytes':manifest['bytes'],'sha256':manifest['sha256']}),flush=True)