68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
package proxycfgglue
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import (
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"context"
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"github.com/hashicorp/go-memdb"
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"github.com/hashicorp/consul/agent/consul/watch"
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"github.com/hashicorp/consul/agent/proxycfg"
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"github.com/hashicorp/consul/agent/structs"
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"github.com/hashicorp/consul/agent/structs/aclfilter"
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)
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// ServerIntentionUpstreams satisfies the proxycfg.IntentionUpstreams interface
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// by sourcing data from a blocking query against the server's state store.
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func ServerIntentionUpstreams(deps ServerDataSourceDeps) proxycfg.IntentionUpstreams {
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return serverIntentionUpstreams{deps}
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}
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type serverIntentionUpstreams struct {
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deps ServerDataSourceDeps
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}
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func (s serverIntentionUpstreams) Notify(ctx context.Context, req *structs.ServiceSpecificRequest, correlationID string, ch chan<- proxycfg.UpdateEvent) error {
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target := structs.NewServiceName(req.ServiceName, &req.EnterpriseMeta)
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return watch.ServerLocalNotify(ctx, correlationID, s.deps.GetStore,
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func(ws memdb.WatchSet, store Store) (uint64, *structs.IndexedServiceList, error) {
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authz, err := s.deps.ACLResolver.ResolveTokenAndDefaultMeta(req.Token, &req.EnterpriseMeta, nil)
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if err != nil {
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return 0, nil, err
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}
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defaultDecision := authz.IntentionDefaultAllow(nil)
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index, services, err := store.IntentionTopology(ws, target, false, defaultDecision, structs.IntentionTargetService)
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if err != nil {
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return 0, nil, err
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}
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result := &structs.IndexedServiceList{
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Services: services,
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QueryMeta: structs.QueryMeta{
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Index: index,
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Backend: structs.QueryBackendBlocking,
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},
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}
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aclfilter.New(authz, s.deps.Logger).Filter(result)
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return index, result, nil
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},
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dispatchBlockingQueryUpdate[*structs.IndexedServiceList](ch),
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)
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}
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func dispatchBlockingQueryUpdate[ResultType any](ch chan<- proxycfg.UpdateEvent) func(context.Context, string, ResultType, error) {
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return func(ctx context.Context, correlationID string, result ResultType, err error) {
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event := proxycfg.UpdateEvent{
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CorrelationID: correlationID,
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Result: result,
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Err: err,
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}
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select {
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case ch <- event:
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case <-ctx.Done():
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}
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}
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}
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