Documentation

Accesses a field of the JSON representation of an OpCode using a dotted accessor (like "a.b.c").

All OpCodes of a job.

All ReasonElems of a job.

Like evaluateFilterM, but allowing only Comparator operations; all other filter language operations are evaluated as False.

The passed function is supposed to return `Just True/False` depending on whether the comparing operation succeeds or not, and Nothing if the comparison itself is invalid (e.g. comparing to a field that doesn't exist).

Whether a FilterPredicate is true for a job.

Whether all predicates of the filter rule are true for the job.

Filters need to be processed in the order as given by the spec; see filterRuleOrder.

Finds the first filter whose predicates all match the job and whose action is not Continue. This is the applying filter.

SlotMap for filter rule rate limiting, having FilterRule UUIDs as keys.

State to be accumulated while traversing filters.

Update a FilterChainState if the given CountMap fits into its filtering SlotsMap.

For a given job queue and set of filters, calculates how many rate limiting filter slots are available and how many are taken by running jobs in the queue.

Implements job filtering as specified in `doc/design-optables.rst`.

Importantly, the filter that *applies* is the first one of which all predicates match; this is implemented in applyingFilter.

The initial FilterChainState is currently not cached across selectJobsToRun invocations because the number of running jobs is typically small (< 100).