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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>
73 lines
1.8 KiB
Go
73 lines
1.8 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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"github.com/hashicorp/consul/internal/controller/cache/index"
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"github.com/hashicorp/consul/internal/controller/cache/indexers"
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"github.com/hashicorp/consul/internal/resource"
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pbcatalog "github.com/hashicorp/consul/proto-public/pbcatalog/v2beta1"
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"github.com/hashicorp/consul/proto-public/pbresource"
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)
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const (
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IndexName = "selected-workloads"
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)
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func Index[T WorkloadSelecting](name string) *index.Index {
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return indexers.DecodedMultiIndexer[T](
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name,
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index.SingleValueFromOneOrTwoArgs[resource.ReferenceOrID, index.IndexQueryOptions](fromArgs),
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fromResource[T],
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)
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}
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func fromArgs(r resource.ReferenceOrID, opts index.IndexQueryOptions) ([]byte, error) {
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workloadRef := &pbresource.Reference{
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Type: pbcatalog.WorkloadType,
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Tenancy: r.GetTenancy(),
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Name: r.GetName(),
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}
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if opts.Prefix {
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return index.PrefixIndexFromRefOrID(workloadRef), nil
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} else {
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return index.IndexFromRefOrID(workloadRef), nil
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}
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}
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func fromResource[T WorkloadSelecting](res *resource.DecodedResource[T]) (bool, [][]byte, error) {
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sel := res.Data.GetWorkloads()
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if sel == nil || (len(sel.Prefixes) == 0 && len(sel.Names) == 0) {
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return false, nil, nil
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}
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var indexes [][]byte
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for _, name := range sel.Names {
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ref := &pbresource.Reference{
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Type: pbcatalog.WorkloadType,
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Tenancy: res.Id.Tenancy,
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Name: name,
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}
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indexes = append(indexes, index.IndexFromRefOrID(ref))
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}
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for _, name := range sel.Prefixes {
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ref := &pbresource.Reference{
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Type: pbcatalog.WorkloadType,
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Tenancy: res.Id.Tenancy,
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Name: name,
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}
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b := index.IndexFromRefOrID(ref)
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// need to remove the path separator to be compatible with prefix matching
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indexes = append(indexes, b[:len(b)-1])
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}
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return true, indexes, nil
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}
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