zc.monitorcache 0.1.0

zc.montorcache 是一个 zc.z3monitor 插件，允许修改或检查正在运行的实例的缓存大小（以对象或字节为单位）。

>>> import zc.monitorcache
>>> import zope.component
>>> import zc.ngi.testing
>>> import zc.monitor
>>> import zc.monitor.interfaces
>>> import zc.z3monitor
>>> import zc.z3monitor.interfaces

>>> connection = zc.ngi.testing.TextConnection()
>>> server = zc.monitor.Server(connection)

>>> zope.component.provideUtility(zc.monitorcache.cacheMonitor,
...     zc.z3monitor.interfaces.IZ3MonitorPlugin, 'cache_size')

>>> connection.test_input('cache_size\n')
-> CLOSE

我们目前没有数据库。让我们添加一些以便测试。

>>> import ZODB.tests.util
>>> import ZODB.interfaces
>>> main = ZODB.tests.util.DB()
>>> zope.component.provideUtility(main, ZODB.interfaces.IDatabase)
>>> test = ZODB.tests.util.DB()
>>> zope.component.provideUtility(
...     test, ZODB.interfaces.IDatabase, 'test')

现在我们应该能够获取每个数据库的缓存大小信息

>>> connection = zc.ngi.testing.TextConnection()
>>> server = zc.monitor.Server(connection)

>>> connection.test_input('cache_size\n')
DB cache sizes for main
Max objects: 400
Max object size bytes: 0MB
DB cache sizes for test
Max objects: 400
Max object size bytes: 0MB
-> CLOSE

我们也可以请求特定数据库的信息

>>> connection = zc.ngi.testing.TextConnection()
>>> server = zc.monitor.Server(connection)

>>> connection.test_input('cache_size -\n')
DB cache sizes for main
Max objects: 400
Max object size bytes: 0MB
-> CLOSE

>>> connection = zc.ngi.testing.TextConnection()
>>> server = zc.monitor.Server(connection)

>>> connection.test_input('cache_size test\n')
DB cache sizes for test
Max objects: 400
Max object size bytes: 0MB
-> CLOSE

我们还可以修改特定数据库的缓存大小

>>> connection = zc.ngi.testing.TextConnection()
>>> server = zc.monitor.Server(connection)

>>> connection.test_input('cache_size test 300\n')
Set max objects to 300
-> CLOSE

>>> connection = zc.ngi.testing.TextConnection()
>>> server = zc.monitor.Server(connection)

>>> connection.test_input('cache_size test 10MB\n')
Set max object size bytes to 10MB
-> CLOSE

>>> connection = zc.ngi.testing.TextConnection()
>>> server = zc.monitor.Server(connection)

>>> connection.test_input('cache_size test\n')
DB cache sizes for test
Max objects: 300
Max object size bytes: 10MB
-> CLOSE