我正在尝试将pos box与网络打印机连接。但是当我运行我的代码时，我收到了这个错误。
raise RuntimeError("cannot set daemon status of active thread")
任何人都知道如何解决此错误？
# -*- coding: utf-8 -*-
import commands
import logging
import simplejson
import os
import os.path
import io
import base64
import openerp
import time
import random
import math
import md5
import openerp.addons.hw_proxy.controllers.main as hw_proxy
import pickle
import re
import subprocess
import traceback
try:
from .. escpos import *
from .. escpos.exceptions import *
from .. escpos.printer import Usb
from .. escpos.printer import Network
except ImportError:
escpos = printer = None
from threading import Thread, Lock
from Queue import Queue, Empty
try:
import usb.core
import socket
except ImportError:
usb = None
socket = None
from PIL import Image
from openerp import http
from openerp.http import request
from openerp.tools.translate import _
_logger = logging.getLogger(__name__)
class EscposDriver(Thread):
def __init__(self):
Thread.__init__(self)
self.queue = Queue()
self.lock = Lock()
self.status = {'status': 'connecting', 'messages':[]}
def connected_network_devices(self):
connected = '192.168.1.200'
return connected
def lockedstart(self):
with self.lock:
if not self.isAlive():
self.daemon = True
self.start()
def get_escpos_printer(self):
printers = self.connected_network_devices()
if len(printers) > 0:
print printers
self.set_status('connected', 'Connected to'+printers)
return Network(printers)
else:
self.set_status('disconnected', 'Printer Not Found')
return None
def get_status(self):
self.push_task('status')
return self.status
def open_cashbox(self,printer):
printer.cashdraw(2)
printer.cashdraw(5)
def set_status(self, status, message = None):
_logger.info(status+' : '+ (message or 'no message'))
if status == self.status['status']:
if message != None and (len(self.status['messages']) == 0 or message != self.status['messages'][-1]):
self.status['messages'].append(message)
else:
self.status['status'] = status
if message:
self.status['messages'] = [message]
else:
self.status['messages'] = []
if status == 'error' and message:
_logger.error('ESC/POS Error: '+message)
elif status == 'disconnected' and message:
_logger.warning('ESC/POS Device Disconnected: '+message)
def run(self):
if not escpos:
_logger.error('ESC/POS cannot initialize, please verify system dependencies.')
return
while True:
try:
error = True
timestamp, task, data = self.queue.get(True)
printer = self.get_escpos_printer()
if printer == None:
if task != 'status':
self.queue.put((timestamp,task,data))
error = False
time.sleep(5)
continue
elif task == 'receipt':
if timestamp >= time.time() - 1 * 60 * 60:
self.print_receipt_body(printer,data)
printer.cut()
elif task == 'xml_receipt':
if timestamp >= time.time() - 1 * 60 * 60:
printer.receipt(data)
elif task == 'cashbox':
if timestamp >= time.time() - 12:
self.open_cashbox(printer)
elif task == 'printstatus':
self.print_status(printer)
elif task == 'status':
pass
error = False
except NoDeviceError as e:
print "No device found %s" %str(e)
except HandleDeviceError as e:
print "Impossible to handle the device due to previous error %s" % str(e)
except TicketNotPrinted as e:
print "The ticket does not seems to have been fully printed %s" % str(e)
except NoStatusError as e:
print "Impossible to get the status of the printer %s" % str(e)
except Exception as e:
self.set_status('error', str(e))
errmsg = str(e) + '\n' + '-'*60+'\n' + traceback.format_exc() + '-'*60 + '\n'
_logger.error(errmsg);
finally:
if error:
self.queue.put((timestamp, task, data))
if printer:
printer.close()
def push_task(self,task, data = None):
self.lockedstart()
self.queue.put((time.time(),task,data))
def print_status(self,eprint):
localips = ['0.0.0.0','127.0.0.1','127.0.1.1','192.168.20.122']
ips = [ c.split(':')[1].split(' ')[0] for c in commands.getoutput("/sbin/ifconfig").split('\n') if 'inet addr' in c ]
ips = [ ip for ip in ips if ip not in localips ]
eprint.text('\n\n')
eprint.set(align='center',type='b',height=2,width=2)
eprint.text('PosBox Status\n')
eprint.text('\n')
eprint.set(align='center')
if len(ips) == 0:
eprint.text('ERROR: Could not connect to LAN\n\nPlease check that the PosBox is correc-\ntly connected with a network cable,\n that the LAN is setup with DHCP, and\nthat network addresses are available')
elif len(ips) == 1:
eprint.text('IP Address:\n'+ips[0]+'\n')
else:
eprint.text('IP Addresses:\n')
for ip in ips:
eprint.text(ip+'\n')
if len(ips) >= 1:
eprint.text('\nHomepage:\nhttp://'+ips[0]+':8069\n')
eprint.text('\n\n')
eprint.cut()
def print_receipt_body(self,eprint,receipt):
def check(string):
return string != True and bool(string) and string.strip()
def price(amount):
return ("{0:."+str(receipt['precision']['price'])+"f}").format(amount)
def money(amount):
return ("{0:."+str(receipt['precision']['money'])+"f}").format(amount)
def quantity(amount):
if math.floor(amount) != amount:
return ("{0:."+str(receipt['precision']['quantity'])+"f}").format(amount)
else:
return str(amount)
def printline(left, right='', width=40, ratio=0.5, indent=0):
lwidth = int(width * ratio)
rwidth = width - lwidth
lwidth = lwidth - indent
left = left[:lwidth]
if len(left) != lwidth:
left = left + ' ' * (lwidth - len(left))
right = right[-rwidth:]
if len(right) != rwidth:
right = ' ' * (rwidth - len(right)) + right
return ' ' * indent + left + right + '\n'
def print_taxes():
taxes = receipt['tax_details']
for tax in taxes:
eprint.text(printline(tax['tax']['name'],price(tax['amount']), width=40,ratio=0.6))
# Receipt Header
if receipt['company']['logo']:
eprint.set(align='center')
eprint.print_base64_image(receipt['company']['logo'])
eprint.text('\n')
else:
eprint.set(align='center',type='b',height=2,width=2)
eprint.text(receipt['company']['name'] + '\n')
eprint.set(align='center',type='b')
if check(receipt['company']['contact_address']):
eprint.text(receipt['company']['contact_address'] + '\n')
if check(receipt['company']['phone']):
eprint.text('Tel:' + receipt['company']['phone'] + '\n')
if check(receipt['company']['vat']):
eprint.text('VAT:' + receipt['company']['vat'] + '\n')
if check(receipt['company']['email']):
eprint.text(receipt['company']['email'] + '\n')
if check(receipt['company']['website']):
eprint.text(receipt['company']['website'] + '\n')
if check(receipt['header']):
eprint.text(receipt['header']+'\n')
if check(receipt['cashier']):
eprint.text('-'*32+'\n')
eprint.text('Served by '+receipt['cashier']+'\n')
# Orderlines
eprint.text('\n\n')
eprint.set(align='center')
for line in receipt['orderlines']:
pricestr = price(line['price_display'])
if line['discount'] == 0 and line['unit_name'] == 'Unit(s)' and line['quantity'] == 1:
eprint.text(printline(line['product_name'],pricestr,ratio=0.6))
else:
eprint.text(printline(line['product_name'],ratio=0.6))
if line['discount'] != 0:
eprint.text(printline('Discount: '+str(line['discount'])+'%', ratio=0.6, indent=2))
if line['unit_name'] == 'Unit(s)':
eprint.text( printline( quantity(line['quantity']) + ' x ' + price(line['price']), pricestr, ratio=0.6, indent=2))
else:
eprint.text( printline( quantity(line['quantity']) + line['unit_name'] + ' x ' + price(line['price']), pricestr, ratio=0.6, indent=2))
# Subtotal if the taxes are not included
taxincluded = True
if money(receipt['subtotal']) != money(receipt['total_with_tax']):
eprint.text(printline('','-------'));
eprint.text(printline(_('Subtotal'),money(receipt['subtotal']),width=40, ratio=0.6))
print_taxes()
#eprint.text(printline(_('Taxes'),money(receipt['total_tax']),width=40, ratio=0.6))
taxincluded = False
# Total
eprint.text(printline('','-------'));
eprint.set(align='center',height=2)
eprint.text(printline(_(' TOTAL'),money(receipt['total_with_tax']),width=40, ratio=0.6))
eprint.text('\n\n');
# Paymentlines
eprint.set(align='center')
for line in receipt['paymentlines']:
eprint.text(printline(line['journal'], money(line['amount']), ratio=0.6))
eprint.text('\n');
eprint.set(align='center',height=2)
eprint.text(printline(_(' CHANGE'),money(receipt['change']),width=40, ratio=0.6))
eprint.set(align='center')
eprint.text('\n');
# Extra Payment info
if receipt['total_discount'] != 0:
eprint.text(printline(_('Discounts'),money(receipt['total_discount']),width=40, ratio=0.6))
if taxincluded:
print_taxes()
#eprint.text(printline(_('Taxes'),money(receipt['total_tax']),width=40, ratio=0.6))
# Footer
if check(receipt['footer']):
eprint.text('\n'+receipt['footer']+'\n\n')
eprint.text(receipt['name']+'\n')
eprint.text( str(receipt['date']['date']).zfill(2)
+'/'+ str(receipt['date']['month']+1).zfill(2)
+'/'+ str(receipt['date']['year']).zfill(4)
+' '+ str(receipt['date']['hour']).zfill(2)
+':'+ str(receipt['date']['minute']).zfill(2) )
driver = EscposDriver()
driver.push_task('printstatus')
hw_proxy.drivers['escpos'] = driver
class EscposProxy(hw_proxy.Proxy):
@http.route('/hw_proxy/open_cashbox', type='json', auth='none', cors='*')
def open_cashbox(self):
_logger.info('ESC/POS: OPEN CASHBOX')
driver.push_task('cashbox')
@http.route('/hw_proxy/print_receipt', type='json', auth='none', cors='*')
def print_receipt(self, receipt):
_logger.info('ESC/POS: PRINT RECEIPT')
driver.push_task('receipt',receipt)
@http.route('/hw_proxy/print_xml_receipt', type='json', auth='none', cors='*')
def print_xml_receipt(self, receipt):
_logger.info('ESC/POS: PRINT XML RECEIPT')
driver.push_task('xml_receipt',receipt)
@http.route('/hw_proxy/escpos/add_supported_device', type='http', auth='none', cors='*')
def add_supported_device(self, device_string):
_logger.info('ESC/POS: ADDED NEW DEVICE:'+device_string)
driver.add_supported_device(device_string)
return "The device:\n"+device_string+"\n has been added to the list of supported devices.<br/><a href='/hw_proxy/status'>Ok</a>"
@http.route('/hw_proxy/escpos/reset_supported_devices', type='http', auth='none', cors='*')
def reset_supported_devices(self):
try:
os.remove('escpos_devices.pickle')
except Exception as e:
pass
return 'The list of supported devices has been reset to factory defaults.<br/><a href="/hw_proxy/status">Ok</a>'
答案 0 :(得分：1)
我设法通过添加
来解决这个问题with AreaNames as (subquery)
select i.InstructorNo, count(distinct i.AreaName)
from AreasofInstructor i
join AreaNames n
on n.AreaName = i.AreaName
group by i.InstructorNo
having count(distinct i.AreaName) = (select count(distinct AreaName) from AreaNames)
答案 1 :(得分：0)
你多次调用push_task;多次调用locked_start。在线程不活动的情况下，这将每次将守护进程状态设置为True;但是如果线程已经调用start，它将引发您描述的错误。
这可以在文档中看到： https://docs.python.org/2/library/threading.html#threading.Thread.daemon