Twisted Zipkin跟踪库
tryfer的Python项目详细描述
Zipkin是一个分布式跟踪系统，tryfer是一个python/Twisted客户端 Zipkin图书馆。
它的设计深受Finagle跟踪库的影响。
http跟踪
tryfer本机支持在客户端和 服务器，并通过传递一系列http头来关联这些请求 根据请求。
客户
此对话的客户端是TracingAgent，它使用 twisted的可组合http/1.1客户端架构，用于记录CLIENT_SEND和 CLIENT_RECV为您的请求添加批注。另外它会记录 请求的完整url作为名为http.uri的字符串批注。
服务器
在服务器上，您可以将应用程序的根资源包装在 TracingWrapperResource，它将自动记录SERVER_RECV和 SERVER_SEND注释。它还通过 请求参数，以便可以记录额外的注释。
def render(self, request):
trace = request.getComponent(ITrace)
trace.record(Annotation.string('name', 'value'))
标题
TracingAgent和TracingWrapperResource支持由Finagle定义的头的子集。
- X-B3-TraceId-十六进制编码的跟踪ID。
- X-B3-SpanId-hex编码的跨度id.
- X-B3-ParentSpanId-hex编码的父跨度的跨度id。
示例
在examples/子目录中，您将找到两个python脚本（一个客户端和 一台服务器），显示使用情况和预期输出。
首先打开两个终端并转到tryfer源目录。
在终端1中，我们可以使用twistd启动服务器
tryfer> twistd -n -y examples/tracing-server.tac 2012-09-05 13:22:02-0700 [-] Log opened. 2012-09-05 13:22:02-0700 [-] twistd 12.1.0 (/Users/dreid/.virtualenvs/tracing/bin/python 2.7.2) starting up. 2012-09-05 13:22:02-0700 [-] reactor class: twisted.internet.selectreactor.SelectReactor. 2012-09-05 13:22:02-0700 [-] Site starting on 8080 2012-09-05 13:22:02-0700 [-] Starting factory <twisted.web.server.Site instance at 0x100e78680>
在终端2中，我们将运行客户端，该客户端将向 服务器：
tryfer> python examples/tracing-client.py
[
{
"annotations": [
{
"type": "string",
"value": "http://localhost:8080/README.rst",
"key": "http.uri"
},
{
"type": "timestamp",
"value": 1346876525257644,
"key": "cs"
},
{
"type": "timestamp",
"value": 1346876525270536,
"key": "cr"
}
],
"trace_id": "00e5f721d19e25fa",
"name": "GET",
"span_id": "007fe79f2c63db97"
}
]
Received 200 response.
在这里，我们看到来自debugtracer的一些输出，它只打印所有 它被要求以json格式跟踪到stdout的注释。这里我们包括 我们请求的第一个注释是http.uri。
现在在终端1中，我们应该看到以下内容：
2012-09-05 13:22:05-0700 [HTTPChannel,0,127.0.0.1] 127.0.0.1 - - [05/Sep/2012:20:22:05 +0000] "GET /README.rst HTTP/1.1" 200 4829 "-" "-"
2012-09-05 13:22:05-0700 [EndAnnotationTracer] Sending trace: (64729494289524218, 36001992872811415) w/ (<tryfer.trace.Annotation object at 0x100e7bb90>,)
[
{
"annotations": [
{
"host": {
"service_name": "tracing-server-example",
"ipv4": "127.0.0.1",
"port": 8080
},
"type": "timestamp",
"value": 1346876525268525,
"key": "sr"
},
{
"host": {
"service_name": "tracing-server-example",
"ipv4": "127.0.0.1",
"port": 8080
},
"type": "timestamp",
"value": 1346876525270173,
"key": "ss"
}
],
"trace_id": "00e5f721d19e25fa",
"name": "GET",
"span_id": "007fe79f2c63db97"
}
]
许可证
Copyright (C) 2012 Rackspace Hosting, Inc
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
欢迎加入QQ群-->： 979659372
