问题
How can I create multiple instances of a bundle that consumes an external webservice? An external webservice requires clients to logon before using the services. I have multiple accounts. The problem is I want to be able to add multiple instances; one for each account. Each instance is an osgi declarative service that consumes the external service.
Do I have to deploy a new bundle for each account? This does not feel like the right way to solve this.
回答1:
Is that bundle under your control - can you refactor it ?
If yes, it might be useful to expose a client factory service, rather than client service itself. Then each instance can log into a different account.
回答2:
What you need is multiple instances of an OSGi component or service, not multiple instances of a bundle.
I'd recommend a service factory, where each OSGi config that you create (account parameters in your case) for your service causes a new instance of a service to be created.
Neil Bartlett's tutorial at http://njbartlett.name/2010/07/19/factory-components-in-ds.html looks like a good starting point for that.
来源：https://stackoverflow.com/questions/13241897/osgi-multiple-instances-of-a-service