mongowatch 0.1.2dev

MongoWatch提供了一个简单的方法来测量程序中特定点的mongo数据库访问计数和计时。

首先，让我们访问数据库并获取一个db对象

>>> import pymongo
>>> conn = pymongo.Connection('localhost', 27017, tz_aware=False)
>>> db = conn[DBNAME]

我们的示例集合与城市生活、交通和人群相关

>>> traffic = db.cars
>>> crowd = db.people

让我们创建一个表示已在集合中的某物的车辆

>>> obj = traffic.insert({'car': 'red'})

现在创建一个监视器跟踪所选数据库上由操作创建的mongo配置文件条目

>>> from mongowatch.mongo import watcher
>>> wa = watcher.Watcher(conn,[DBNAME])

现在，让我们向交通中添加一个项目

>>> obj = traffic.insert({'truck':'blue'})

然后我们向人群中添加两个人

>>> obj = crowd.insert({'name':'billy'})
>>> obj = crowd.insert({'name':'jane'})

这导致了以下操作被记录在监视器中。

>>> wa.dump()
total ops:
  inserts: 3
summary:
  database: mongowatch_test
     cars
       inserts: 1
     people
       inserts: 2
details:
  ns mongowatch_test.cars
  op insert
  ts 2011-12-13 08:27:05.496000
  millis ...
<BLANKLINE>
  ns mongowatch_test.people
  op insert
  ts 2011-12-13 08:27:05.498000
  millis ...
<BLANKLINE>
  ns mongowatch_test.people
  op insert
  ts 2011-12-13 08:27:05.498000
  millis ...
<BLANKLINE>

让我们重置计数器

>>> wa.reset()

所以现在做更多的工作

>>> crowd.remove({})
>>> traffic.remove({})
>>> obj = crowd.insert({'name':'bonzo'})

这次我们显式地停止监视器

>>> wa.stop()
>>> wa.dump()
total ops:
  inserts: 1
  removes: 2
summary:
  database: mongowatch_test
     cars
       removes: 1
     people
       inserts: 1
       removes: 1
details:
  ns mongowatch_test.people
  op remove
  query {}
  ts 2011-12-13 07:47:51.921000
  millis 0
<BLANKLINE>
  ns mongowatch_test.cars
  op remove
  query {}
  ts 2011-12-13 07:47:51.921000
  millis 0
<BLANKLINE>
  ns mongowatch_test.people
  op insert
  ts 2011-12-13 07:47:51.921000
  millis 0
<BLANKLINE>

>>> conn.disconnect()