伏龙阁资源网

Python函数调用追踪实现代码
站长资源 2024/12/25 佚名
2 0

对于分布式追踪，主要有以下的几个概念：

  • 追踪 Trace：就是由分布的微服务协作所支撑的一个事务。一个追踪，包含为该事务提供服务的各个服务请求。
  • 跨度 Span：Span是事务中的一个工作流，一个Span包含了时间戳，日志和标签信息。Span之间包含父子关系，或者主从(Followup)关系。
  • 跨度上下文 Span Context：跨度上下文是支撑分布式追踪的关键，它可以在调用的服务之间传递，上下文的内容包括诸如：从一个服务传递到另一个服务的时间，追踪的ID，Span的ID还有其它需要从上游服务传递到下游服务的信息。

我实现了一种简单的调用追踪。

import uuid
import os
import time
l = []
class Recorder(object):
  def __init__(self,servername,root_span = None):
    if root_span == None:
      self.__span = Span(servername)
    else:
      self.__span = Span(servername,root_span)
  #上下文管理器
  def __enter__(self):
    return self.__span

  # 退出方法中，用来实现善后处理工作
  def __exit__(self, exc_type, exc_val, exc_tb):
    self.__span.record()
    self.__span.record_save(self.__span.span)
class Span(object):
  def __init__(self,servername,root_span = None):
    self.servername = servername
    self.span = self.newspan()
    if root_span != None:
      root_span.dic['child_span'] = self.span
      self.span["root_span_flag"] = False
  def newspan(self):
    self.dic = {
      "spanid": uuid.uuid4().int,
      "servername": self.servername,
      "location": "",
      "ip": "",
      "durationtime": 0,
      "starttime": time.time(),
      "endtime":0,
      "tag": "",
      "log": "",
      "root_span_flag":True,
      "child_span": ""
    }
    return self.dic

  def record_save(self, span):
    currenttracer = {"id": span["spanid"], "data": span}
    print(currenttracer)
    l.append(currenttracer)

  def record(self):
    self.span["servername"] = self.servername
    self.span["location"] = os.getcwd() + "." + self.servername
    self.span["endtime"] = time.time()
    self.span["durationtime"] = self.span["endtime"] - self.span["starttime"]

  def setspantag(self,tag):
    self.span["tag"] = tag

  def setspanlog(self,log):
    self.span["log"] = log

# 连续调用
with Recorder('server1') as span:
  time.sleep(1)
  span.setspantag("test")
  #调用server1方法
  print("server1")
  with Recorder('server2',span) as span1:
    time.sleep(2)
    # 调用server2方法
    print("server2")
    with Recorder('server3',span1) as span2:
      time.sleep(0.5)
      # 调用server3方法
      print("server3")
#单独调用记录
with Recorder('server4') as span_test1:
  time.sleep(1.5)
  print("server4")

with Recorder('server5') as span_test2:
  time.sleep(2)
  print("server5")

运行结果：

server1
server2
server3
{'id': 224716339449765695394515303164364012192, 'data': {'spanid': 224716339449765695394515303164364012192, 'servername': 'server3', 'location': 'D:\\python_protest\\protest\\trace\\trace_main.server3', 'ip': '', 'durationtime': 0.5004403591156006, 'starttime': 1598947338.0551107, 'endtime': 1598947338.555551, 'tag': '', 'log': '', 'root_span_flag': False, 'child_span': None}}
{'id': 254736847532758359233387151739984206570, 'data': {'spanid': 254736847532758359233387151739984206570, 'servername': 'server2', 'location': 'D:\\python_protest\\protest\\trace\\trace_main.server2', 'ip': '', 'durationtime': 2.501264810562134, 'starttime': 1598947336.0542862, 'endtime': 1598947338.555551, 'tag': '', 'log': '', 'root_span_flag': False, 'child_span': {'spanid': 224716339449765695394515303164364012192, 'servername': 'server3', 'location': 'D:\\python_protest\\protest\\trace\\trace_main.server3', 'ip': '', 'durationtime': 0.5004403591156006, 'starttime': 1598947338.0551107, 'endtime': 1598947338.555551, 'tag': '', 'log': '', 'root_span_flag': False, 'child_span': None}}}
{'id': 91028031631192607088457781914309166266, 'data': {'spanid': 91028031631192607088457781914309166266, 'servername': 'server1', 'location': 'D:\\python_protest\\protest\\trace\\trace_main.server1', 'ip': '', 'durationtime': 3.5021069049835205, 'starttime': 1598947335.0534441, 'endtime': 1598947338.555551, 'tag': 'test', 'log': '', 'root_span_flag': True, 'child_span': {'spanid': 254736847532758359233387151739984206570, 'servername': 'server2', 'location': 'D:\\python_protest\\protest\\trace\\trace_main.server2', 'ip': '', 'durationtime': 2.501264810562134, 'starttime': 1598947336.0542862, 'endtime': 1598947338.555551, 'tag': '', 'log': '', 'root_span_flag': False, 'child_span': {'spanid': 224716339449765695394515303164364012192, 'servername': 'server3', 'location': 'D:\\python_protest\\protest\\trace\\trace_main.server3', 'ip': '', 'durationtime': 0.5004403591156006, 'starttime': 1598947338.0551107, 'endtime': 1598947338.555551, 'tag': '', 'log': '', 'root_span_flag': False, 'child_span': None}}}}
server4
{'id': 103171729522922437998918618387133480096, 'data': {'spanid': 103171729522922437998918618387133480096, 'servername': 'server4', 'location': 'D:\\python_protest\\protest\\trace\\trace_main.server4', 'ip': '', 'durationtime': 1.5001769065856934, 'starttime': 1598947338.555551, 'endtime': 1598947340.055728, 'tag': '', 'log': '', 'root_span_flag': True, 'child_span': None}}
server5
{'id': 320091321623887285825256878422834254741, 'data': {'spanid': 320091321623887285825256878422834254741, 'servername': 'server5', 'location': 'D:\\python_protest\\protest\\trace\\trace_main.server5', 'ip': '', 'durationtime': 2.0005736351013184, 'starttime': 1598947340.055728, 'endtime': 1598947342.0563016, 'tag': '', 'log': '', 'root_span_flag': True, 'child_span': None}}

关于下一步，会使用redis存储其结果，并进行相应的输出分析。

修过不能追踪同级调用的问题

import uuid
import os
import time


l = []
class Recorder(object):
  def __init__(self,servername,root_span = None):
    if root_span == None:
      self.__span = Span(servername)
    else:
      self.__span = Span(servername,root_span)

  #上下文管理器
  def __enter__(self):
    return self.__span

  # 退出方法中，用来实现善后处理工作
  def __exit__(self, exc_type, exc_val, exc_tb):
    self.__span.record()
    self.__span.record_save(self.__span.span)


class Span(object):
  def __init__(self,servername,root_span = None):
    self.servername = servername
    self.span = self.newspan()
    if root_span != None:
      root_span.dic['child_span'].append(self.span)
      self.span["root_span_flag"] = False

  def newspan(self):
    self.dic = {
      "spanid": uuid.uuid4().int,
      "servername": self.servername,
      "location": "",
      "ip": "",
      "durationtime": 0,
      "starttime": time.time(),
      "endtime":0,
      "tag": "",
      "log": "",
      "root_span_flag":True,
      "child_span": []
    }
    return self.dic

  def record_save(self, span):
    currenttracer = {"id": span["spanid"], "data": span}
    print(currenttracer)
    l.append(currenttracer)

  def record(self):
    self.span["servername"] = self.servername
    self.span["location"] = os.getcwd() + "." + self.servername
    self.span["endtime"] = time.time()
    self.span["durationtime"] = self.span["endtime"] - self.span["starttime"]

  def setspantag(self,tag):
    self.span["tag"] = tag

  def setspanlog(self,log):
    self.span["log"] = log



# 连续调用
with Recorder('server1') as span:
  time.sleep(1)
  span.setspantag("test")
  #调用server1方法
  print("server1")
  with Recorder('server2',span) as span1:
    time.sleep(2)
    # 调用server2方法
    print("server2")
    with Recorder('server3',span1) as span2:
      time.sleep(0.5)
      # 调用server3方法
      print("server3")


# 并级连续调用
# with Recorder('server1') as span1:
#   time.sleep(1)
#   span1.setspantag("test")
#   #调用server1方法
#   print("server1")
#   with Recorder('server2',span1) as span2:
#     time.sleep(2)
#     # 调用server2方法
#     print("server2")
#   with Recorder('server3',span1) as span3:
#     time.sleep(0.5)
#     # 调用server3方法
#     print("server3")

# #单独调用记录
# with Recorder('server4') as span_test1:
#   time.sleep(1.5)
#   print("server4")
#
# with Recorder('server5') as span_test2:
#   time.sleep(2)
#   print("server5")

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

广告合作：本站广告合作请联系QQ：858582 申请时备注：广告合作（否则不回）
免责声明：本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除！
www.wwsws.com 伏龙阁资源网
39,976影音资源
44,792技术资源
21,817软件资源
651,128站长资源

更新日志

友情链接

杰晶网络 DDR爱好者之家 桃源资源网 杰网资源 富贵资源网 南强小屋 铁雪资源网 幽灵资源网 万梅资源网 狼山资源网 白云岛资源网 昆仑资源网 相思资源网 明霞山资源网 内蒙古资源网 黑松山资源网 茶园资源网 饿虎岗资源网 大旗谷资源网 常春岛资源网 岱庙资源网 兴国资源网 快活林资源网 蝙蝠岛资源网 帝王谷资源网 白云城资源网 伏龙阁资源网 清风细雨楼 天枫庄资源网 圆月山庄资源网 无争山庄资源网 神水资源网 移花宫资源网 神剑山庄资源网 无为清净楼资源网 金钱帮资源网 丐帮资源网 华山资源网 极乐门资源网 小李飞刀资源网 凤求凰客栈 风云阁资源网 金狮镖局 鸳鸯亭资源网 千金楼资源网 更多链接