python函数调用追踪-凯发ag旗舰厅登录网址下载

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。

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