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feat: implement retry logic and increase connection timeout for kitchen printer network requests

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This commit is contained in:
Suherdy Yacob 2026-05-12 10:27:41 +07:00
parent f82b09f0b7
commit 86ee02c030
1 changed files with 24 additions and 18 deletions
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18
models/pos_printer.py
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@ -10,17 +10,23 @@ def _isolated_printer_thread(ip, data):
Completely isolated printer thread. Completely isolated printer thread.
Does not touch Odoo environment to avoid GIL/Locking issues. Does not touch Odoo environment to avoid GIL/Locking issues.
""" """
max_retries = 3
timeout = 10.0
for attempt in range(max_retries):
s = None s = None
try: try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# 2 seconds is enough for a local network printer. # Increased timeout to 10s to handle slow networks or waking printers
# Reducing from 5s to avoid holding resources too long. s.settimeout(timeout)
s.settimeout(2.0)
s.connect((ip, 9100)) s.connect((ip, 9100))
s.sendall(data) s.sendall(data)
_logger.info("POS_PRINTER: Successfully printed to %s", ip) _logger.info("POS_PRINTER: Successfully printed to %s (Attempt %d)", ip, attempt + 1)
return
except Exception as e: except Exception as e:
_logger.error("POS_PRINTER: Background print failed for IP %s: %s", ip, e) if attempt < max_retries - 1:
_logger.warning("POS_PRINTER: Print attempt %d failed for IP %s: %s. Retrying...", attempt + 1, ip, e)
else:
_logger.error("POS_PRINTER: Background print failed for IP %s after %d attempts: %s", ip, max_retries, e)
finally: finally:
if s: if s:
try: try:
@ -72,7 +78,7 @@ class PosPrinter(models.Model):
NEWLINE = b'\n' NEWLINE = b'\n'
data = INIT data = INIT
data += ALIGN_CENTER + SIZE_DOUBLE + BOLD_ON data += ALIGN_CENTER + SIZE_NORMAL + BOLD_ON
data += b"KITCHEN RECEIPT" + NEWLINE data += b"KITCHEN RECEIPT" + NEWLINE
data += SIZE_NORMAL + BOLD_OFF + NEWLINE data += SIZE_NORMAL + BOLD_OFF + NEWLINE