mirror of https://github.com/hashicorp/consul
59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
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package controller
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import (
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"context"
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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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// DependencyMapper is called when a dependency watched via WithWatch is changed
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// to determine which of the controller's managed resources need to be reconciled.
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type DependencyMapper func(
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ctx context.Context,
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rt Runtime,
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res *pbresource.Resource,
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) ([]Request, error)
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// MapOwner implements a DependencyMapper that returns the updated resource's owner.
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func MapOwner(_ context.Context, _ Runtime, res *pbresource.Resource) ([]Request, error) {
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var reqs []Request
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if res.Owner != nil {
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reqs = append(reqs, Request{ID: res.Owner})
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}
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return reqs, nil
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}
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// MapOwnerFiltered creates a DependencyMapper that returns owner IDs as Requests
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// if the type of the owner ID matches the given filter type.
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func MapOwnerFiltered(filter *pbresource.Type) DependencyMapper {
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return func(_ context.Context, _ Runtime, res *pbresource.Resource) ([]Request, error) {
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if res.Owner == nil {
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return nil, nil
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}
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if !resource.EqualType(res.Owner.GetType(), filter) {
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return nil, nil
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}
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return []Request{{ID: res.Owner}}, nil
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}
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}
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// ReplaceType creates a DependencyMapper that returns request IDs with the same
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// name and tenancy as the original resource but with the type replaced with
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// the type specified as this functions parameter.
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func ReplaceType(desiredType *pbresource.Type) DependencyMapper {
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return func(_ context.Context, _ Runtime, res *pbresource.Resource) ([]Request, error) {
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return []Request{
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{
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ID: &pbresource.ID{
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Type: desiredType,
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Tenancy: res.Id.Tenancy,
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Name: res.Id.Name,
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},
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},
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}, nil
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}
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}
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