| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/envoyproxy/go-control-plane/envoy/config/core/v3 | |
| github.com/envoyproxy/go-control-plane/envoy/config/endpoint/v3 | |
| github.com/envoyproxy/go-control-plane/envoy/service/load_stats/v3 | |
| google.golang.org/grpc/grpclog | Package grpclog defines logging for grpc. |
| google.golang.org/grpc/internal/backoff | Package backoff implement the backoff strategy for gRPC. |
| google.golang.org/grpc/internal/grpclog | Package grpclog provides logging functionality for internal gRPC packages, outside of the functionality provided by the external `grpclog` package. |
| google.golang.org/grpc/internal/pretty | Package pretty defines helper functions to pretty-print structs for logging. |
| google.golang.org/grpc/xds/internal | Package internal contains functions/structs shared by xds balancers/resolvers. |
| google.golang.org/grpc/xds/internal/xdsclient/load | Package load provides functionality to record and maintain load data. |
| google.golang.org/grpc/xds/internal/xdsclient/transport | Package transport defines the interface that describe the functionality required to communicate with an xDS server using streaming calls. |
| google.golang.org/protobuf/proto | Package proto provides functions operating on protocol buffer messages. |
| google.golang.org/protobuf/types/known/durationpb | Package durationpb contains generated types for google/protobuf/duration.proto. |
| io | Package io provides basic interfaces to I/O primitives. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |