4b76d8a8ff
This is the OSS portion of enterprise PR 2489. This PR introduces a server-local implementation of the proxycfg.InternalServiceDump interface that sources data from a blocking query against the server's state store. For simplicity, it only implements the subset of the Internal.ServiceDump RPC handler actually used by proxycfg - as such the result type has been changed to IndexedCheckServiceNodes to avoid confusion.
100 lines
3.3 KiB
Go
100 lines
3.3 KiB
Go
package proxycfgglue
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/hashicorp/go-bexpr"
|
|
"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"
|
|
)
|
|
|
|
// CacheInternalServiceDump satisfies the proxycfg.InternalServiceDump
|
|
// interface by sourcing data from the agent cache.
|
|
func CacheInternalServiceDump(c *cache.Cache) proxycfg.InternalServiceDump {
|
|
return &cacheInternalServiceDump{c}
|
|
}
|
|
|
|
// cacheInternalServiceDump wraps the underlying cache-type to return a simpler
|
|
// subset of the response (as this is all we use in proxycfg).
|
|
type cacheInternalServiceDump struct {
|
|
c *cache.Cache
|
|
}
|
|
|
|
func (c *cacheInternalServiceDump) Notify(ctx context.Context, req *structs.ServiceDumpRequest, correlationID string, ch chan<- proxycfg.UpdateEvent) error {
|
|
dispatch := dispatchCacheUpdate(ch)
|
|
|
|
return c.c.NotifyCallback(ctx, cachetype.InternalServiceDumpName, req, correlationID,
|
|
func(ctx context.Context, event cache.UpdateEvent) {
|
|
if r, _ := event.Result.(*structs.IndexedNodesWithGateways); r != nil {
|
|
event.Result = &structs.IndexedCheckServiceNodes{
|
|
Nodes: r.Nodes,
|
|
QueryMeta: r.QueryMeta,
|
|
}
|
|
}
|
|
dispatch(ctx, event)
|
|
})
|
|
}
|
|
|
|
// ServerInternalServiceDump satisfies the proxycfg.InternalServiceDump
|
|
// interface by sourcing data from a blocking query against the server's
|
|
// state store.
|
|
func ServerInternalServiceDump(deps ServerDataSourceDeps, remoteSource proxycfg.InternalServiceDump) proxycfg.InternalServiceDump {
|
|
return &serverInternalServiceDump{deps, remoteSource}
|
|
}
|
|
|
|
type serverInternalServiceDump struct {
|
|
deps ServerDataSourceDeps
|
|
remoteSource proxycfg.InternalServiceDump
|
|
}
|
|
|
|
func (s *serverInternalServiceDump) Notify(ctx context.Context, req *structs.ServiceDumpRequest, correlationID string, ch chan<- proxycfg.UpdateEvent) error {
|
|
if req.Datacenter != s.deps.Datacenter {
|
|
return s.remoteSource.Notify(ctx, req, correlationID, ch)
|
|
}
|
|
|
|
filter, err := bexpr.CreateFilter(req.Filter, nil, structs.CheckServiceNodes{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// This is just the small subset of the Internal.ServiceDump RPC handler used
|
|
// by proxycfg.
|
|
return watch.ServerLocalNotify(ctx, correlationID, s.deps.GetStore,
|
|
func(ws memdb.WatchSet, store Store) (uint64, *structs.IndexedCheckServiceNodes, error) {
|
|
authz, err := s.deps.ACLResolver.ResolveTokenAndDefaultMeta(req.Token, &req.EnterpriseMeta, nil)
|
|
if err != nil {
|
|
return 0, nil, err
|
|
}
|
|
|
|
idx, nodes, err := store.ServiceDump(ws, req.ServiceKind, req.UseServiceKind, &req.EnterpriseMeta, structs.DefaultPeerKeyword)
|
|
if err != nil {
|
|
return 0, nil, err
|
|
}
|
|
|
|
raw, err := filter.Execute(nodes)
|
|
if err != nil {
|
|
return 0, nil, fmt.Errorf("could not filter local service dump: %w", err)
|
|
}
|
|
nodes = raw.(structs.CheckServiceNodes)
|
|
|
|
aclfilter.New(authz, s.deps.Logger).Filter(&nodes)
|
|
|
|
return idx, &structs.IndexedCheckServiceNodes{
|
|
Nodes: nodes,
|
|
QueryMeta: structs.QueryMeta{
|
|
Index: idx,
|
|
Backend: structs.QueryBackendBlocking,
|
|
},
|
|
}, nil
|
|
},
|
|
dispatchBlockingQueryUpdate[*structs.IndexedCheckServiceNodes](ch),
|
|
)
|
|
}
|