grpc: rename internal/grpc to pkg/grpc (#1010)

* grpc: rename internal/grpc to pkg/grpc

* don't ignore pkg dir

* remove debug line

pkg/grpc/session/session.go

@@ -0,0 +1,30 @@
+// Package session contains protobuf types for sessions.
+package session
+
+import (
+	context "context"
+
+	"github.com/golang/protobuf/ptypes"
+
+	"github.com/pomerium/pomerium/pkg/grpc/databroker"
+)
+
+// Get gets a session from the databroker.
+func Get(ctx context.Context, client databroker.DataBrokerServiceClient, sessionID string) (*Session, error) {
+	any, _ := ptypes.MarshalAny(new(Session))
+
+	res, err := client.Get(ctx, &databroker.GetRequest{
+		Type: any.GetTypeUrl(),
+		Id:   sessionID,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	var s Session
+	err = ptypes.UnmarshalAny(res.GetRecord().GetData(), &s)
+	if err != nil {
+		return nil, err
+	}
+	return &s, nil
+}