'''
Created on 2019年8月1日

@author: User
'''

import settings
import pickle
import time
import json
import numpy as np
import ctypes
import inspect

#自定义jsonEncoder
class MyEncoder(json.JSONEncoder):
    def default(self, obj):
        if isinstance(obj, np.ndarray):
            return obj.tolist()
        elif isinstance(obj, bytes):
            return str(obj, encoding='utf-8')
        elif isinstance(obj, (np.float_, np.float16, np.float32, 
        np.float64)):
            return float(obj)
        return json.JSONEncoder.default(self, obj)

TIMEOUT_RES = json.dumps({"code": "","name":"","prem":"","success":False})

def run_timeout(db,id,step,jointime,sourceContent,doc_id):
    '''
    @summary: 设置超时处理
    '''
    if time.time()-jointime>settings.TIME_OUT:
        
        _timeout_data = dict()
        _timeout_data["id"] = id
        _timeout_data["step"] = step
        _timeout_data["data"] = sourceContent
        _timeout_data["doc_id"] = doc_id
        db.rpush(settings.TIMEOUT_QUEUE,json.dumps(_timeout_data,cls=MyEncoder))
        db.set(id,TIMEOUT_RES)
        return True
    return False

def _async_raise(tid, exctype):
    """raises the exception, performs cleanup if needed"""
    tid = ctypes.c_long(tid)
    if not inspect.isclass(exctype):
        exctype = type(exctype)
    res = ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, ctypes.py_object(exctype))
    if res == 0:
        raise ValueError("invalid thread id")
    elif res != 1:
        ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, None)
        raise SystemError("PyThreadState_SetAsyncExc failed")

def stop_thread(thread):
    _async_raise(thread.ident, SystemExit)

def getTimeOut(jointime):
    return settings.TIME_OUT-(time.time()-jointime)