van.resumelb Pool class for zc.resumelb which divides workers by version
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Python library Python pool

van.resumelb Description

van.resumelb is a Python module that contains a pool class which uses the classifier to route requests to multiple sub-pools of workers. Each sub-pool works like a normal zc.resumelb pool but only on workers of a single version.The classifier will decide which of the sub-pools will serve the request by returning a tuple (version, classifier). This request will be served by a sub-pool containing only workers of a matching version.UsageAt the current time, the only way is to monkey patch the zc.resumelb.lb.Pool class Like this: >>> from van.resumelb import Pool >>> import zc.resumelb.lb >>> zc.resumelb.lb.Pool = PoolWARNING: you must pass --single-version to the loadbalancer startup script. If you do not, all the workers will have a version of None.In the future it should be possible to set the Pool class on the command line. The code to enable command-line overriding of the pool is awaiting merging at: http://zope3.pov.lt/trac/browser/zc.resumelb/branches/jinty-external-pool/Product's homepage

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