Requesters are generally instantiated by individual services and used internally (can be multiple kinds of requesters in a concert, but only one scheduler). Most requesters can be very simple and don’t need special implementations.

Resource Pool Requester

This requester automatically manages requests that ensure a well defined pool of resources is always available (or at least pending). A resource consists of a resource name along with minimum and maximum requirements (e.g. rocon_apps/delivery with a min of 2 and max of 4 as well as rocon_apps/cleaning with a min of 0 and max of 2.

This is used in conjunction with the static link graph service type.

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