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Update termux_setup/shrinkdb.py

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Oliver 2025-12-07 13:50:10 +00:00
parent d20367d67b
commit a7d5c190c7
1 changed files with 10 additions and 16 deletions
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26
termux_setup/shrinkdb.py
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@ -13,25 +13,26 @@ KEEP_TABLES = [
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(message)s', stream=sys.stdout) logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(message)s', stream=sys.stdout)
def shrink_db(src_path, dst_path): def shrink_db(src_path, dst_path):
# Ensure we don't try to read a half-written file
if os.path.getsize(src_path) < 1024: return if os.path.getsize(src_path) < 1024: return
tmp_path = dst_path + ".tmp" tmp_path = dst_path + ".tmp"
if os.path.exists(tmp_path): os.remove(tmp_path) if os.path.exists(tmp_path): os.remove(tmp_path)
try: try:
con = sqlite3.connect(tmp_path) con = sqlite3.connect(tmp_path)
con.execute("PRAGMA journal_mode=OFF; PRAGMA synchronous=0;") con.execute("PRAGMA journal_mode=OFF")
con.execute(f"ATTACH DATABASE '{src_path}' AS src;") con.execute("PRAGMA synchronous=0")
con.execute(f"ATTACH DATABASE '{src_path}' AS src")
tables = [r[0] for r in con.execute("SELECT name FROM src.sqlite_master WHERE type='table'").fetchall()] tables = [r[0] for r in con.execute("SELECT name FROM src.sqlite_master WHERE type='table'").fetchall()]
for tbl in KEEP_TABLES: for tbl in KEEP_TABLES:
if tbl not in tables: continue if tbl not in tables: continue
# Copy Schema & Data # Copy Schema
con.execute(con.execute(f"SELECT sql FROM src.sqlite_master WHERE name='{tbl}'").fetchone()[0]) sql = con.execute(f"SELECT sql FROM src.sqlite_master WHERE name='{tbl}'").fetchone()[0]
con.execute(sql)
# Copy Data
if tbl == "XIAOMI_ACTIVITY_SAMPLE" and MAX_DAYS > 0: if tbl == "XIAOMI_ACTIVITY_SAMPLE" and MAX_DAYS > 0:
cutoff = int(time.time()) - (MAX_DAYS * 86400) cutoff = int(time.time()) - (MAX_DAYS * 86400)
con.execute(f"INSERT INTO {tbl} SELECT * FROM src.{tbl} WHERE TIMESTAMP >= {cutoff}") con.execute(f"INSERT INTO {tbl} SELECT * FROM src.{tbl} WHERE TIMESTAMP >= {cutoff}")
@ -40,8 +41,6 @@ def shrink_db(src_path, dst_path):
con.commit() con.commit()
con.close() con.close()
# Atomic move to prevent partial sync
os.rename(tmp_path, dst_path) os.rename(tmp_path, dst_path)
logging.info(f"Exported: {os.path.basename(dst_path)} ({os.path.getsize(dst_path)>>10} KB)") logging.info(f"Exported: {os.path.basename(dst_path)} ({os.path.getsize(dst_path)>>10} KB)")
@ -52,30 +51,25 @@ def shrink_db(src_path, dst_path):
def main(): def main():
os.makedirs(SYNC_DIR, exist_ok=True) os.makedirs(SYNC_DIR, exist_ok=True)
logging.info(f"Watching {WATCH_DIR}") logging.info(f"Watching {WATCH_DIR}")
# Track files to avoid re-processing same file repeatedly
processed_files = {} processed_files = {}
while True: while True:
try: try:
# Look for DB files (Gadgetbridge export is usually named 'Gadgetbridge' or 'Gadgetbridge.db')
for f in os.listdir(WATCH_DIR): for f in os.listdir(WATCH_DIR):
if "Gadgetbridge" in f and not f.endswith(".wal") and not f.endswith(".shm"): if "Gadgetbridge" in f and not f.endswith((".wal", ".shm", ".tmp")):
path = os.path.join(WATCH_DIR, f) path = os.path.join(WATCH_DIR, f)
mtime = os.path.getmtime(path) mtime = os.path.getmtime(path)
# Process if new or modified > 5 seconds ago (stable)
if path not in processed_files or processed_files[path] != mtime: if path not in processed_files or processed_files[path] != mtime:
# Debounce: Ensure file isn't actively being written if (time.time() - mtime) > 5:
if (time.time() - mtime) > 5:
logging.info(f"Processing {f}...") logging.info(f"Processing {f}...")
out_name = f"GB_Small_{int(time.time())}.db" out_name = f"GB_Small_{int(time.time())}.db"
shrink_db(path, os.path.join(SYNC_DIR, out_name)) shrink_db(path, os.path.join(SYNC_DIR, out_name))
processed_files[path] = mtime processed_files[path] = mtime
time.sleep(10) time.sleep(10)
except KeyboardInterrupt: break except KeyboardInterrupt: break
except Exception as e: logging.error(e) except Exception as e: logging.error(e)
if __name__ == "__main__": if __name__ == "__main__":
main() main()
EOF