open-consul/agent/proxycfg-glue/federation_state_list_mesh_...

68 lines
2.4 KiB
Go

package proxycfgglue
import (
"context"
"github.com/hashicorp/go-memdb"
"github.com/hashicorp/consul/agent/cache"
cachetype "github.com/hashicorp/consul/agent/cache-types"
"github.com/hashicorp/consul/agent/consul/watch"
"github.com/hashicorp/consul/agent/proxycfg"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/agent/structs/aclfilter"
)
// CacheFederationStateListMeshGateways satisfies the proxycfg.FederationStateListMeshGateways
// interface by sourcing data from the agent cache.
func CacheFederationStateListMeshGateways(c *cache.Cache) proxycfg.FederationStateListMeshGateways {
return &cacheProxyDataSource[*structs.DCSpecificRequest]{c, cachetype.FederationStateListMeshGatewaysName}
}
// ServerFederationStateListMeshGateways satisfies the proxycfg.FederationStateListMeshGateways
// interface by sourcing data from a blocking query against the server's state
// store.
func ServerFederationStateListMeshGateways(deps ServerDataSourceDeps) proxycfg.FederationStateListMeshGateways {
return &serverFederationStateListMeshGateways{deps}
}
type serverFederationStateListMeshGateways struct {
deps ServerDataSourceDeps
}
func (s *serverFederationStateListMeshGateways) Notify(ctx context.Context, req *structs.DCSpecificRequest, correlationID string, ch chan<- proxycfg.UpdateEvent) error {
return watch.ServerLocalNotify(ctx, correlationID, s.deps.GetStore,
func(ws memdb.WatchSet, store Store) (uint64, *structs.DatacenterIndexedCheckServiceNodes, error) {
authz, err := s.deps.ACLResolver.ResolveTokenAndDefaultMeta(req.Token, &req.EnterpriseMeta, nil)
if err != nil {
return 0, nil, err
}
index, fedStates, err := store.FederationStateList(ws)
if err != nil {
return 0, nil, err
}
results := make(map[string]structs.CheckServiceNodes)
for _, fs := range fedStates {
if gws := fs.MeshGateways; len(gws) != 0 {
// Shallow clone to prevent ACL filtering manipulating the slice in memdb.
results[fs.Datacenter] = gws.ShallowClone()
}
}
rsp := &structs.DatacenterIndexedCheckServiceNodes{
DatacenterNodes: results,
QueryMeta: structs.QueryMeta{
Index: index,
Backend: structs.QueryBackendBlocking,
},
}
aclfilter.New(authz, s.deps.Logger).Filter(rsp)
return index, rsp, nil
},
dispatchBlockingQueryUpdate[*structs.DatacenterIndexedCheckServiceNodes](ch),
)
}