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* Add cache resource decoding helpers * Implement a common package for workload selection facilities. This includes: * Controller cache Index * ACL hooks * Dependency Mapper to go from workload to list of resources which select it * Dependency Mapper to go from a resource which selects workloads to all the workloads it selects. * Update the endpoints controller to use the cache instead of custom mappers. Co-authored-by: R.B. Boyer <4903+rboyer@users.noreply.github.com>
46 lines
1.4 KiB
Go
46 lines
1.4 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package workloadselector
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import (
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"context"
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"github.com/hashicorp/consul/internal/controller"
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"github.com/hashicorp/consul/internal/controller/dependency"
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"github.com/hashicorp/consul/internal/resource"
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"github.com/hashicorp/consul/proto-public/pbresource"
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)
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// MapSelectorToWorkloads will use the "id" index on watched Workload type to find all current
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// workloads selected by the resource.
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func MapSelectorToWorkloads[T WorkloadSelecting](_ context.Context, rt controller.Runtime, r *pbresource.Resource) ([]controller.Request, error) {
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res, err := resource.Decode[T](r)
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if err != nil {
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return nil, err
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}
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workloads, err := GetWorkloadsWithSelector[T](rt.Cache, res)
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if err != nil {
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return nil, err
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}
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reqs := make([]controller.Request, len(workloads))
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for i, workload := range workloads {
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reqs[i] = controller.Request{
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ID: workload.Id,
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}
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}
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return reqs, nil
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}
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// MapWorkloadsToSelectors returns a DependencyMapper that will use the specified index to map a workload
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// to resources that select it.
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//
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// This mapper can only be used on watches for the Workload type and works in conjunction with the Index
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// created by this package.
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func MapWorkloadsToSelectors(indexType *pbresource.Type, indexName string) controller.DependencyMapper {
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return dependency.CacheParentsMapper(indexType, indexName)
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}
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