Merge pull request #8587 from hashicorp/streaming/add-grpc-server
streaming: add gRPC server for handling connections
This commit is contained in:
Daniel Nephin
GitHub
commit
75515f3431
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@ -470,6 +470,9 @@ type Config struct {
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// AutoEncrypt.Sign requests.
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AutoEncryptAllowTLS bool
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// TODO: godoc, set this value from Agent
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EnableGRPCServer bool
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// Embedded Consul Enterprise specific configuration
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*EnterpriseConfig
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}
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@ -188,6 +188,9 @@ func (s *Server) handleConn(conn net.Conn, isTLS bool) {
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conn = tls.Server(conn, s.tlsConfigurator.IncomingInsecureRPCConfig())
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s.handleInsecureConn(conn)
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case pool.RPCGRPC:
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s.grpcHandler.Handle(conn)
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default:
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if !s.handleEnterpriseRPCConn(typ, conn, isTLS) {
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s.rpcLogger().Error("unrecognized RPC byte",
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@ -254,6 +257,9 @@ func (s *Server) handleNativeTLS(conn net.Conn) {
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case pool.ALPN_RPCSnapshot:
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s.handleSnapshotConn(tlsConn)
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case pool.ALPN_RPCGRPC:
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s.grpcHandler.Handle(conn)
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case pool.ALPN_WANGossipPacket:
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if err := s.handleALPN_WANGossipPacketStream(tlsConn); err != nil && err != io.EOF {
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s.rpcLogger().Error(
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@ -26,6 +26,7 @@ import (
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"github.com/hashicorp/consul/agent/consul/fsm"
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"github.com/hashicorp/consul/agent/consul/state"
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"github.com/hashicorp/consul/agent/consul/usagemetrics"
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"github.com/hashicorp/consul/agent/grpc"
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"github.com/hashicorp/consul/agent/metadata"
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"github.com/hashicorp/consul/agent/pool"
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"github.com/hashicorp/consul/agent/router"
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@ -240,6 +241,7 @@ type Server struct {
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// Listener is used to listen for incoming connections
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Listener net.Listener
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grpcHandler connHandler
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rpcServer *rpc.Server
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// insecureRPCServer is a RPC server that is configure with
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@ -314,6 +316,12 @@ type Server struct {
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EnterpriseServer
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}
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type connHandler interface {
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Run() error
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Handle(conn net.Conn)
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Shutdown() error
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}
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// NewServer is used to construct a new Consul server from the configuration
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// and extra options, potentially returning an error.
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func NewServer(config *Config, options ...ConsulOption) (*Server, error) {
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@ -603,6 +611,8 @@ func NewServer(config *Config, options ...ConsulOption) (*Server, error) {
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}
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go reporter.Run(&lib.StopChannelContext{StopCh: s.shutdownCh})
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s.grpcHandler = newGRPCHandlerFromConfig(logger, config)
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// Initialize Autopilot. This must happen before starting leadership monitoring
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// as establishing leadership could attempt to use autopilot and cause a panic.
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s.initAutopilot(config)
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@ -612,6 +622,11 @@ func NewServer(config *Config, options ...ConsulOption) (*Server, error) {
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go s.monitorLeadership()
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// Start listening for RPC requests.
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go func() {
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if err := s.grpcHandler.Run(); err != nil {
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s.logger.Error("gRPC server failed", "error", err)
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}
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}()
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go s.listen(s.Listener)
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// Start listeners for any segments with separate RPC listeners.
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@ -625,6 +640,14 @@ func NewServer(config *Config, options ...ConsulOption) (*Server, error) {
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return s, nil
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}
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func newGRPCHandlerFromConfig(logger hclog.Logger, config *Config) connHandler {
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if !config.EnableGRPCServer {
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return grpc.NoOpHandler{Logger: logger}
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}
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return grpc.NewHandler(config.RPCAddr)
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}
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func (s *Server) connectCARootsMonitor(ctx context.Context) {
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for {
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ws := memdb.NewWatchSet()
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@ -949,6 +972,12 @@ func (s *Server) Shutdown() error {
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s.Listener.Close()
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}
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if s.grpcHandler != nil {
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if err := s.grpcHandler.Shutdown(); err != nil {
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s.logger.Warn("failed to stop gRPC server", "error", err)
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}
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}
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// Close the connection pool
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if s.connPool != nil {
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s.connPool.Shutdown()
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@ -0,0 +1,109 @@
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/*
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Package grpc provides a Handler and client for agent gRPC connections.
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*/
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package grpc
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import (
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"fmt"
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"net"
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"google.golang.org/grpc"
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)
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// NewHandler returns a gRPC server that accepts connections from Handle(conn).
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func NewHandler(addr net.Addr) *Handler {
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// We don't need to pass tls.Config to the server since it's multiplexed
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// behind the RPC listener, which already has TLS configured.
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srv := grpc.NewServer(
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grpc.StatsHandler(&statsHandler{}),
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grpc.StreamInterceptor((&activeStreamCounter{}).Intercept),
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)
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// TODO(streaming): add gRPC services to srv here
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return &Handler{
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srv: srv,
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listener: &chanListener{addr: addr, conns: make(chan net.Conn)},
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}
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}
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// Handler implements a handler for the rpc server listener, and the
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// agent.Component interface for managing the lifecycle of the grpc.Server.
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type Handler struct {
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srv *grpc.Server
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listener *chanListener
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}
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// Handle the connection by sending it to a channel for the grpc.Server to receive.
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func (h *Handler) Handle(conn net.Conn) {
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h.listener.conns <- conn
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}
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func (h *Handler) Run() error {
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return h.srv.Serve(h.listener)
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}
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func (h *Handler) Shutdown() error {
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h.srv.Stop()
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return nil
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}
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// chanListener implements net.Listener for grpc.Server.
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type chanListener struct {
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conns chan net.Conn
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addr net.Addr
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}
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// Accept blocks until a connection is received from Handle, and then returns the
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// connection. Accept implements part of the net.Listener interface for grpc.Server.
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func (l *chanListener) Accept() (net.Conn, error) {
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return <-l.conns, nil
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}
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func (l *chanListener) Addr() net.Addr {
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return l.addr
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}
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// Close does nothing. The connections are managed by the caller.
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func (l *chanListener) Close() error {
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return nil
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}
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// NoOpHandler implements the same methods as Handler, but performs no handling.
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// It may be used in place of Handler to disable the grpc server.
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type NoOpHandler struct {
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Logger Logger
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}
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type Logger interface {
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Error(string, ...interface{})
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}
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func (h NoOpHandler) Handle(conn net.Conn) {
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h.Logger.Error("gRPC conn opened but gRPC RPC is disabled, closing",
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"conn", logConn(conn))
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_ = conn.Close()
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}
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func (h NoOpHandler) Run() error {
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return nil
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}
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func (h NoOpHandler) Shutdown() error {
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return nil
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}
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// logConn is a local copy of github.com/hashicorp/memberlist.LogConn, to avoid
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// a large dependency for a minor formatting function.
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// logConn is used to keep log formatting consistent.
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func logConn(conn net.Conn) string {
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if conn == nil {
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return "from=<unknown address>"
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}
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addr := conn.RemoteAddr()
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if addr == nil {
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return "from=<unknown address>"
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}
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return fmt.Sprintf("from=%s", addr.String())
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}
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@ -0,0 +1,28 @@
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// Code generated by protoc-gen-go-binary. DO NOT EDIT.
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// source: agent/grpc/internal/testservice/simple.proto
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package testservice
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import (
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"github.com/golang/protobuf/proto"
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)
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// MarshalBinary implements encoding.BinaryMarshaler
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func (msg *Req) MarshalBinary() ([]byte, error) {
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return proto.Marshal(msg)
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}
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// UnmarshalBinary implements encoding.BinaryUnmarshaler
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func (msg *Req) UnmarshalBinary(b []byte) error {
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return proto.Unmarshal(b, msg)
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}
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// MarshalBinary implements encoding.BinaryMarshaler
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func (msg *Resp) MarshalBinary() ([]byte, error) {
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return proto.Marshal(msg)
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}
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// UnmarshalBinary implements encoding.BinaryUnmarshaler
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func (msg *Resp) UnmarshalBinary(b []byte) error {
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return proto.Unmarshal(b, msg)
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}
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@ -0,0 +1,691 @@
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// Code generated by protoc-gen-gogo. DO NOT EDIT.
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// source: agent/grpc/internal/testservice/simple.proto
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package testservice
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import (
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context "context"
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fmt "fmt"
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proto "github.com/golang/protobuf/proto"
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grpc "google.golang.org/grpc"
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codes "google.golang.org/grpc/codes"
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status "google.golang.org/grpc/status"
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io "io"
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math "math"
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math_bits "math/bits"
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)
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// Reference imports to suppress errors if they are not otherwise used.
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var _ = proto.Marshal
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var _ = fmt.Errorf
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var _ = math.Inf
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// This is a compile-time assertion to ensure that this generated file
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// is compatible with the proto package it is being compiled against.
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// A compilation error at this line likely means your copy of the
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// proto package needs to be updated.
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const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
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type Req struct {
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Datacenter string `protobuf:"bytes,1,opt,name=Datacenter,proto3" json:"Datacenter,omitempty"`
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XXX_NoUnkeyedLiteral struct{} `json:"-"`
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XXX_unrecognized []byte `json:"-"`
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XXX_sizecache int32 `json:"-"`
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}
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func (m *Req) Reset() { *m = Req{} }
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func (m *Req) String() string { return proto.CompactTextString(m) }
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func (*Req) ProtoMessage() {}
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func (*Req) Descriptor() ([]byte, []int) {
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return fileDescriptor_3009a77c573f826d, []int{0}
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}
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func (m *Req) XXX_Unmarshal(b []byte) error {
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return m.Unmarshal(b)
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}
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func (m *Req) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
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if deterministic {
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return xxx_messageInfo_Req.Marshal(b, m, deterministic)
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} else {
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b = b[:cap(b)]
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n, err := m.MarshalToSizedBuffer(b)
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||||
if err != nil {
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return nil, err
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||||
}
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return b[:n], nil
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||||
}
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||||
}
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func (m *Req) XXX_Merge(src proto.Message) {
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xxx_messageInfo_Req.Merge(m, src)
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||||
}
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func (m *Req) XXX_Size() int {
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return m.Size()
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}
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func (m *Req) XXX_DiscardUnknown() {
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xxx_messageInfo_Req.DiscardUnknown(m)
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}
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var xxx_messageInfo_Req proto.InternalMessageInfo
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func (m *Req) GetDatacenter() string {
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if m != nil {
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return m.Datacenter
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||||
}
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return ""
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||||
}
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type Resp struct {
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ServerName string `protobuf:"bytes,1,opt,name=ServerName,proto3" json:"ServerName,omitempty"`
|
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XXX_NoUnkeyedLiteral struct{} `json:"-"`
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||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *Resp) Reset() { *m = Resp{} }
|
||||
func (m *Resp) String() string { return proto.CompactTextString(m) }
|
||||
func (*Resp) ProtoMessage() {}
|
||||
func (*Resp) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_3009a77c573f826d, []int{1}
|
||||
}
|
||||
func (m *Resp) XXX_Unmarshal(b []byte) error {
|
||||
return m.Unmarshal(b)
|
||||
}
|
||||
func (m *Resp) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
if deterministic {
|
||||
return xxx_messageInfo_Resp.Marshal(b, m, deterministic)
|
||||
} else {
|
||||
b = b[:cap(b)]
|
||||
n, err := m.MarshalToSizedBuffer(b)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return b[:n], nil
|
||||
}
|
||||
}
|
||||
func (m *Resp) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Resp.Merge(m, src)
|
||||
}
|
||||
func (m *Resp) XXX_Size() int {
|
||||
return m.Size()
|
||||
}
|
||||
func (m *Resp) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Resp.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Resp proto.InternalMessageInfo
|
||||
|
||||
func (m *Resp) GetServerName() string {
|
||||
if m != nil {
|
||||
return m.ServerName
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func init() {
|
||||
proto.RegisterType((*Req)(nil), "testservice.Req")
|
||||
proto.RegisterType((*Resp)(nil), "testservice.Resp")
|
||||
}
|
||||
|
||||
func init() {
|
||||
proto.RegisterFile("agent/grpc/internal/testservice/simple.proto", fileDescriptor_3009a77c573f826d)
|
||||
}
|
||||
|
||||
var fileDescriptor_3009a77c573f826d = []byte{
|
||||
// 200 bytes of a gzipped FileDescriptorProto
|
||||
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0xd2, 0x49, 0x4c, 0x4f, 0xcd,
|
||||
0x2b, 0xd1, 0x4f, 0x2f, 0x2a, 0x48, 0xd6, 0xcf, 0xcc, 0x2b, 0x49, 0x2d, 0xca, 0x4b, 0xcc, 0xd1,
|
||||
0x2f, 0x49, 0x2d, 0x2e, 0x29, 0x4e, 0x2d, 0x2a, 0xcb, 0x4c, 0x4e, 0xd5, 0x2f, 0xce, 0xcc, 0x2d,
|
||||
0xc8, 0x49, 0xd5, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0xe2, 0x46, 0x92, 0x51, 0x52, 0xe5, 0x62,
|
||||
0x0e, 0x4a, 0x2d, 0x14, 0x92, 0xe3, 0xe2, 0x72, 0x49, 0x2c, 0x49, 0x4c, 0x4e, 0x05, 0xe9, 0x96,
|
||||
0x60, 0x54, 0x60, 0xd4, 0xe0, 0x0c, 0x42, 0x12, 0x51, 0x52, 0xe3, 0x62, 0x09, 0x4a, 0x2d, 0x2e,
|
||||
0x00, 0xa9, 0x0b, 0x4e, 0x2d, 0x2a, 0x4b, 0x2d, 0xf2, 0x4b, 0xcc, 0x4d, 0x85, 0xa9, 0x43, 0x88,
|
||||
0x18, 0xe5, 0x72, 0xb1, 0x05, 0x83, 0xed, 0x12, 0x32, 0xe2, 0xe2, 0x0c, 0xce, 0xcf, 0x4d, 0x2d,
|
||||
0xc9, 0xc8, 0xcc, 0x4b, 0x17, 0x12, 0xd0, 0x43, 0xb2, 0x53, 0x2f, 0x28, 0xb5, 0x50, 0x4a, 0x10,
|
||||
0x4d, 0xa4, 0xb8, 0x40, 0x89, 0x41, 0x48, 0x9f, 0x8b, 0xc5, 0x2d, 0x27, 0xbf, 0x9c, 0x48, 0xe5,
|
||||
0x06, 0x8c, 0x4e, 0x02, 0x27, 0x1e, 0xc9, 0x31, 0x5e, 0x78, 0x24, 0xc7, 0xf8, 0xe0, 0x91, 0x1c,
|
||||
0xe3, 0x8c, 0xc7, 0x72, 0x0c, 0x49, 0x6c, 0x60, 0x3f, 0x1a, 0x03, 0x02, 0x00, 0x00, 0xff, 0xff,
|
||||
0x61, 0xd3, 0x5e, 0xba, 0x13, 0x01, 0x00, 0x00,
|
||||
}
|
||||
|
||||
// Reference imports to suppress errors if they are not otherwise used.
|
||||
var _ context.Context
|
||||
var _ grpc.ClientConn
|
||||
|
||||
// This is a compile-time assertion to ensure that this generated file
|
||||
// is compatible with the grpc package it is being compiled against.
|
||||
const _ = grpc.SupportPackageIsVersion4
|
||||
|
||||
// SimpleClient is the client API for Simple service.
|
||||
//
|
||||
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
|
||||
type SimpleClient interface {
|
||||
Something(ctx context.Context, in *Req, opts ...grpc.CallOption) (*Resp, error)
|
||||
Flow(ctx context.Context, in *Req, opts ...grpc.CallOption) (Simple_FlowClient, error)
|
||||
}
|
||||
|
||||
type simpleClient struct {
|
||||
cc *grpc.ClientConn
|
||||
}
|
||||
|
||||
func NewSimpleClient(cc *grpc.ClientConn) SimpleClient {
|
||||
return &simpleClient{cc}
|
||||
}
|
||||
|
||||
func (c *simpleClient) Something(ctx context.Context, in *Req, opts ...grpc.CallOption) (*Resp, error) {
|
||||
out := new(Resp)
|
||||
err := c.cc.Invoke(ctx, "/testservice.Simple/Something", in, out, opts...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return out, nil
|
||||
}
|
||||
|
||||
func (c *simpleClient) Flow(ctx context.Context, in *Req, opts ...grpc.CallOption) (Simple_FlowClient, error) {
|
||||
stream, err := c.cc.NewStream(ctx, &_Simple_serviceDesc.Streams[0], "/testservice.Simple/Flow", opts...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
x := &simpleFlowClient{stream}
|
||||
if err := x.ClientStream.SendMsg(in); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := x.ClientStream.CloseSend(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return x, nil
|
||||
}
|
||||
|
||||
type Simple_FlowClient interface {
|
||||
Recv() (*Resp, error)
|
||||
grpc.ClientStream
|
||||
}
|
||||
|
||||
type simpleFlowClient struct {
|
||||
grpc.ClientStream
|
||||
}
|
||||
|
||||
func (x *simpleFlowClient) Recv() (*Resp, error) {
|
||||
m := new(Resp)
|
||||
if err := x.ClientStream.RecvMsg(m); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return m, nil
|
||||
}
|
||||
|
||||
// SimpleServer is the server API for Simple service.
|
||||
type SimpleServer interface {
|
||||
Something(context.Context, *Req) (*Resp, error)
|
||||
Flow(*Req, Simple_FlowServer) error
|
||||
}
|
||||
|
||||
// UnimplementedSimpleServer can be embedded to have forward compatible implementations.
|
||||
type UnimplementedSimpleServer struct {
|
||||
}
|
||||
|
||||
func (*UnimplementedSimpleServer) Something(ctx context.Context, req *Req) (*Resp, error) {
|
||||
return nil, status.Errorf(codes.Unimplemented, "method Something not implemented")
|
||||
}
|
||||
func (*UnimplementedSimpleServer) Flow(req *Req, srv Simple_FlowServer) error {
|
||||
return status.Errorf(codes.Unimplemented, "method Flow not implemented")
|
||||
}
|
||||
|
||||
func RegisterSimpleServer(s *grpc.Server, srv SimpleServer) {
|
||||
s.RegisterService(&_Simple_serviceDesc, srv)
|
||||
}
|
||||
|
||||
func _Simple_Something_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
|
||||
in := new(Req)
|
||||
if err := dec(in); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if interceptor == nil {
|
||||
return srv.(SimpleServer).Something(ctx, in)
|
||||
}
|
||||
info := &grpc.UnaryServerInfo{
|
||||
Server: srv,
|
||||
FullMethod: "/testservice.Simple/Something",
|
||||
}
|
||||
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
|
||||
return srv.(SimpleServer).Something(ctx, req.(*Req))
|
||||
}
|
||||
return interceptor(ctx, in, info, handler)
|
||||
}
|
||||
|
||||
func _Simple_Flow_Handler(srv interface{}, stream grpc.ServerStream) error {
|
||||
m := new(Req)
|
||||
if err := stream.RecvMsg(m); err != nil {
|
||||
return err
|
||||
}
|
||||
return srv.(SimpleServer).Flow(m, &simpleFlowServer{stream})
|
||||
}
|
||||
|
||||
type Simple_FlowServer interface {
|
||||
Send(*Resp) error
|
||||
grpc.ServerStream
|
||||
}
|
||||
|
||||
type simpleFlowServer struct {
|
||||
grpc.ServerStream
|
||||
}
|
||||
|
||||
func (x *simpleFlowServer) Send(m *Resp) error {
|
||||
return x.ServerStream.SendMsg(m)
|
||||
}
|
||||
|
||||
var _Simple_serviceDesc = grpc.ServiceDesc{
|
||||
ServiceName: "testservice.Simple",
|
||||
HandlerType: (*SimpleServer)(nil),
|
||||
Methods: []grpc.MethodDesc{
|
||||
{
|
||||
MethodName: "Something",
|
||||
Handler: _Simple_Something_Handler,
|
||||
},
|
||||
},
|
||||
Streams: []grpc.StreamDesc{
|
||||
{
|
||||
StreamName: "Flow",
|
||||
Handler: _Simple_Flow_Handler,
|
||||
ServerStreams: true,
|
||||
},
|
||||
},
|
||||
Metadata: "agent/grpc/internal/testservice/simple.proto",
|
||||
}
|
||||
|
||||
func (m *Req) Marshal() (dAtA []byte, err error) {
|
||||
size := m.Size()
|
||||
dAtA = make([]byte, size)
|
||||
n, err := m.MarshalToSizedBuffer(dAtA[:size])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return dAtA[:n], nil
|
||||
}
|
||||
|
||||
func (m *Req) MarshalTo(dAtA []byte) (int, error) {
|
||||
size := m.Size()
|
||||
return m.MarshalToSizedBuffer(dAtA[:size])
|
||||
}
|
||||
|
||||
func (m *Req) MarshalToSizedBuffer(dAtA []byte) (int, error) {
|
||||
i := len(dAtA)
|
||||
_ = i
|
||||
var l int
|
||||
_ = l
|
||||
if m.XXX_unrecognized != nil {
|
||||
i -= len(m.XXX_unrecognized)
|
||||
copy(dAtA[i:], m.XXX_unrecognized)
|
||||
}
|
||||
if len(m.Datacenter) > 0 {
|
||||
i -= len(m.Datacenter)
|
||||
copy(dAtA[i:], m.Datacenter)
|
||||
i = encodeVarintSimple(dAtA, i, uint64(len(m.Datacenter)))
|
||||
i--
|
||||
dAtA[i] = 0xa
|
||||
}
|
||||
return len(dAtA) - i, nil
|
||||
}
|
||||
|
||||
func (m *Resp) Marshal() (dAtA []byte, err error) {
|
||||
size := m.Size()
|
||||
dAtA = make([]byte, size)
|
||||
n, err := m.MarshalToSizedBuffer(dAtA[:size])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return dAtA[:n], nil
|
||||
}
|
||||
|
||||
func (m *Resp) MarshalTo(dAtA []byte) (int, error) {
|
||||
size := m.Size()
|
||||
return m.MarshalToSizedBuffer(dAtA[:size])
|
||||
}
|
||||
|
||||
func (m *Resp) MarshalToSizedBuffer(dAtA []byte) (int, error) {
|
||||
i := len(dAtA)
|
||||
_ = i
|
||||
var l int
|
||||
_ = l
|
||||
if m.XXX_unrecognized != nil {
|
||||
i -= len(m.XXX_unrecognized)
|
||||
copy(dAtA[i:], m.XXX_unrecognized)
|
||||
}
|
||||
if len(m.ServerName) > 0 {
|
||||
i -= len(m.ServerName)
|
||||
copy(dAtA[i:], m.ServerName)
|
||||
i = encodeVarintSimple(dAtA, i, uint64(len(m.ServerName)))
|
||||
i--
|
||||
dAtA[i] = 0xa
|
||||
}
|
||||
return len(dAtA) - i, nil
|
||||
}
|
||||
|
||||
func encodeVarintSimple(dAtA []byte, offset int, v uint64) int {
|
||||
offset -= sovSimple(v)
|
||||
base := offset
|
||||
for v >= 1<<7 {
|
||||
dAtA[offset] = uint8(v&0x7f | 0x80)
|
||||
v >>= 7
|
||||
offset++
|
||||
}
|
||||
dAtA[offset] = uint8(v)
|
||||
return base
|
||||
}
|
||||
func (m *Req) Size() (n int) {
|
||||
if m == nil {
|
||||
return 0
|
||||
}
|
||||
var l int
|
||||
_ = l
|
||||
l = len(m.Datacenter)
|
||||
if l > 0 {
|
||||
n += 1 + l + sovSimple(uint64(l))
|
||||
}
|
||||
if m.XXX_unrecognized != nil {
|
||||
n += len(m.XXX_unrecognized)
|
||||
}
|
||||
return n
|
||||
}
|
||||
|
||||
func (m *Resp) Size() (n int) {
|
||||
if m == nil {
|
||||
return 0
|
||||
}
|
||||
var l int
|
||||
_ = l
|
||||
l = len(m.ServerName)
|
||||
if l > 0 {
|
||||
n += 1 + l + sovSimple(uint64(l))
|
||||
}
|
||||
if m.XXX_unrecognized != nil {
|
||||
n += len(m.XXX_unrecognized)
|
||||
}
|
||||
return n
|
||||
}
|
||||
|
||||
func sovSimple(x uint64) (n int) {
|
||||
return (math_bits.Len64(x|1) + 6) / 7
|
||||
}
|
||||
func sozSimple(x uint64) (n int) {
|
||||
return sovSimple(uint64((x << 1) ^ uint64((int64(x) >> 63))))
|
||||
}
|
||||
func (m *Req) Unmarshal(dAtA []byte) error {
|
||||
l := len(dAtA)
|
||||
iNdEx := 0
|
||||
for iNdEx < l {
|
||||
preIndex := iNdEx
|
||||
var wire uint64
|
||||
for shift := uint(0); ; shift += 7 {
|
||||
if shift >= 64 {
|
||||
return ErrIntOverflowSimple
|
||||
}
|
||||
if iNdEx >= l {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
b := dAtA[iNdEx]
|
||||
iNdEx++
|
||||
wire |= uint64(b&0x7F) << shift
|
||||
if b < 0x80 {
|
||||
break
|
||||
}
|
||||
}
|
||||
fieldNum := int32(wire >> 3)
|
||||
wireType := int(wire & 0x7)
|
||||
if wireType == 4 {
|
||||
return fmt.Errorf("proto: Req: wiretype end group for non-group")
|
||||
}
|
||||
if fieldNum <= 0 {
|
||||
return fmt.Errorf("proto: Req: illegal tag %d (wire type %d)", fieldNum, wire)
|
||||
}
|
||||
switch fieldNum {
|
||||
case 1:
|
||||
if wireType != 2 {
|
||||
return fmt.Errorf("proto: wrong wireType = %d for field Datacenter", wireType)
|
||||
}
|
||||
var stringLen uint64
|
||||
for shift := uint(0); ; shift += 7 {
|
||||
if shift >= 64 {
|
||||
return ErrIntOverflowSimple
|
||||
}
|
||||
if iNdEx >= l {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
b := dAtA[iNdEx]
|
||||
iNdEx++
|
||||
stringLen |= uint64(b&0x7F) << shift
|
||||
if b < 0x80 {
|
||||
break
|
||||
}
|
||||
}
|
||||
intStringLen := int(stringLen)
|
||||
if intStringLen < 0 {
|
||||
return ErrInvalidLengthSimple
|
||||
}
|
||||
postIndex := iNdEx + intStringLen
|
||||
if postIndex < 0 {
|
||||
return ErrInvalidLengthSimple
|
||||
}
|
||||
if postIndex > l {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
m.Datacenter = string(dAtA[iNdEx:postIndex])
|
||||
iNdEx = postIndex
|
||||
default:
|
||||
iNdEx = preIndex
|
||||
skippy, err := skipSimple(dAtA[iNdEx:])
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if skippy < 0 {
|
||||
return ErrInvalidLengthSimple
|
||||
}
|
||||
if (iNdEx + skippy) < 0 {
|
||||
return ErrInvalidLengthSimple
|
||||
}
|
||||
if (iNdEx + skippy) > l {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
m.XXX_unrecognized = append(m.XXX_unrecognized, dAtA[iNdEx:iNdEx+skippy]...)
|
||||
iNdEx += skippy
|
||||
}
|
||||
}
|
||||
|
||||
if iNdEx > l {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
return nil
|
||||
}
|
||||
func (m *Resp) Unmarshal(dAtA []byte) error {
|
||||
l := len(dAtA)
|
||||
iNdEx := 0
|
||||
for iNdEx < l {
|
||||
preIndex := iNdEx
|
||||
var wire uint64
|
||||
for shift := uint(0); ; shift += 7 {
|
||||
if shift >= 64 {
|
||||
return ErrIntOverflowSimple
|
||||
}
|
||||
if iNdEx >= l {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
b := dAtA[iNdEx]
|
||||
iNdEx++
|
||||
wire |= uint64(b&0x7F) << shift
|
||||
if b < 0x80 {
|
||||
break
|
||||
}
|
||||
}
|
||||
fieldNum := int32(wire >> 3)
|
||||
wireType := int(wire & 0x7)
|
||||
if wireType == 4 {
|
||||
return fmt.Errorf("proto: Resp: wiretype end group for non-group")
|
||||
}
|
||||
if fieldNum <= 0 {
|
||||
return fmt.Errorf("proto: Resp: illegal tag %d (wire type %d)", fieldNum, wire)
|
||||
}
|
||||
switch fieldNum {
|
||||
case 1:
|
||||
if wireType != 2 {
|
||||
return fmt.Errorf("proto: wrong wireType = %d for field ServerName", wireType)
|
||||
}
|
||||
var stringLen uint64
|
||||
for shift := uint(0); ; shift += 7 {
|
||||
if shift >= 64 {
|
||||
return ErrIntOverflowSimple
|
||||
}
|
||||
if iNdEx >= l {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
b := dAtA[iNdEx]
|
||||
iNdEx++
|
||||
stringLen |= uint64(b&0x7F) << shift
|
||||
if b < 0x80 {
|
||||
break
|
||||
}
|
||||
}
|
||||
intStringLen := int(stringLen)
|
||||
if intStringLen < 0 {
|
||||
return ErrInvalidLengthSimple
|
||||
}
|
||||
postIndex := iNdEx + intStringLen
|
||||
if postIndex < 0 {
|
||||
return ErrInvalidLengthSimple
|
||||
}
|
||||
if postIndex > l {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
m.ServerName = string(dAtA[iNdEx:postIndex])
|
||||
iNdEx = postIndex
|
||||
default:
|
||||
iNdEx = preIndex
|
||||
skippy, err := skipSimple(dAtA[iNdEx:])
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if skippy < 0 {
|
||||
return ErrInvalidLengthSimple
|
||||
}
|
||||
if (iNdEx + skippy) < 0 {
|
||||
return ErrInvalidLengthSimple
|
||||
}
|
||||
if (iNdEx + skippy) > l {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
m.XXX_unrecognized = append(m.XXX_unrecognized, dAtA[iNdEx:iNdEx+skippy]...)
|
||||
iNdEx += skippy
|
||||
}
|
||||
}
|
||||
|
||||
if iNdEx > l {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
return nil
|
||||
}
|
||||
func skipSimple(dAtA []byte) (n int, err error) {
|
||||
l := len(dAtA)
|
||||
iNdEx := 0
|
||||
for iNdEx < l {
|
||||
var wire uint64
|
||||
for shift := uint(0); ; shift += 7 {
|
||||
if shift >= 64 {
|
||||
return 0, ErrIntOverflowSimple
|
||||
}
|
||||
if iNdEx >= l {
|
||||
return 0, io.ErrUnexpectedEOF
|
||||
}
|
||||
b := dAtA[iNdEx]
|
||||
iNdEx++
|
||||
wire |= (uint64(b) & 0x7F) << shift
|
||||
if b < 0x80 {
|
||||
break
|
||||
}
|
||||
}
|
||||
wireType := int(wire & 0x7)
|
||||
switch wireType {
|
||||
case 0:
|
||||
for shift := uint(0); ; shift += 7 {
|
||||
if shift >= 64 {
|
||||
return 0, ErrIntOverflowSimple
|
||||
}
|
||||
if iNdEx >= l {
|
||||
return 0, io.ErrUnexpectedEOF
|
||||
}
|
||||
iNdEx++
|
||||
if dAtA[iNdEx-1] < 0x80 {
|
||||
break
|
||||
}
|
||||
}
|
||||
return iNdEx, nil
|
||||
case 1:
|
||||
iNdEx += 8
|
||||
return iNdEx, nil
|
||||
case 2:
|
||||
var length int
|
||||
for shift := uint(0); ; shift += 7 {
|
||||
if shift >= 64 {
|
||||
return 0, ErrIntOverflowSimple
|
||||
}
|
||||
if iNdEx >= l {
|
||||
return 0, io.ErrUnexpectedEOF
|
||||
}
|
||||
b := dAtA[iNdEx]
|
||||
iNdEx++
|
||||
length |= (int(b) & 0x7F) << shift
|
||||
if b < 0x80 {
|
||||
break
|
||||
}
|
||||
}
|
||||
if length < 0 {
|
||||
return 0, ErrInvalidLengthSimple
|
||||
}
|
||||
iNdEx += length
|
||||
if iNdEx < 0 {
|
||||
return 0, ErrInvalidLengthSimple
|
||||
}
|
||||
return iNdEx, nil
|
||||
case 3:
|
||||
for {
|
||||
var innerWire uint64
|
||||
var start int = iNdEx
|
||||
for shift := uint(0); ; shift += 7 {
|
||||
if shift >= 64 {
|
||||
return 0, ErrIntOverflowSimple
|
||||
}
|
||||
if iNdEx >= l {
|
||||
return 0, io.ErrUnexpectedEOF
|
||||
}
|
||||
b := dAtA[iNdEx]
|
||||
iNdEx++
|
||||
innerWire |= (uint64(b) & 0x7F) << shift
|
||||
if b < 0x80 {
|
||||
break
|
||||
}
|
||||
}
|
||||
innerWireType := int(innerWire & 0x7)
|
||||
if innerWireType == 4 {
|
||||
break
|
||||
}
|
||||
next, err := skipSimple(dAtA[start:])
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
iNdEx = start + next
|
||||
if iNdEx < 0 {
|
||||
return 0, ErrInvalidLengthSimple
|
||||
}
|
||||
}
|
||||
return iNdEx, nil
|
||||
case 4:
|
||||
return iNdEx, nil
|
||||
case 5:
|
||||
iNdEx += 4
|
||||
return iNdEx, nil
|
||||
default:
|
||||
return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
|
||||
}
|
||||
}
|
||||
panic("unreachable")
|
||||
}
|
||||
|
||||
var (
|
||||
ErrInvalidLengthSimple = fmt.Errorf("proto: negative length found during unmarshaling")
|
||||
ErrIntOverflowSimple = fmt.Errorf("proto: integer overflow")
|
||||
)
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
syntax = "proto3";
|
||||
|
||||
package testservice;
|
||||
|
||||
// Simple service is used to test gRPC plumbing.
|
||||
service Simple {
|
||||
rpc Something(Req) returns (Resp) {}
|
||||
rpc Flow(Req) returns (stream Resp) {}
|
||||
}
|
||||
|
||||
message Req {
|
||||
string Datacenter = 1;
|
||||
}
|
||||
|
||||
message Resp {
|
||||
string ServerName = 1;
|
||||
}
|
||||
|
|
@ -0,0 +1,81 @@
|
|||
package grpc
|
||||
|
||||
import (
|
||||
"context"
|
||||
"sync/atomic"
|
||||
|
||||
"github.com/armon/go-metrics"
|
||||
"google.golang.org/grpc"
|
||||
"google.golang.org/grpc/stats"
|
||||
)
|
||||
|
||||
// statsHandler is a grpc/stats.StatsHandler which emits connection and
|
||||
// request metrics to go-metrics.
|
||||
type statsHandler struct {
|
||||
activeConns uint64 // must be 8-byte aligned for atomic access
|
||||
}
|
||||
|
||||
// TagRPC implements grpcStats.StatsHandler
|
||||
func (c *statsHandler) TagRPC(ctx context.Context, _ *stats.RPCTagInfo) context.Context {
|
||||
// No-op
|
||||
return ctx
|
||||
}
|
||||
|
||||
// HandleRPC implements grpcStats.StatsHandler
|
||||
func (c *statsHandler) HandleRPC(_ context.Context, s stats.RPCStats) {
|
||||
label := "server"
|
||||
if s.IsClient() {
|
||||
label = "client"
|
||||
}
|
||||
switch s.(type) {
|
||||
case *stats.InHeader:
|
||||
metrics.IncrCounter([]string{"grpc", label, "request"}, 1)
|
||||
}
|
||||
}
|
||||
|
||||
// TagConn implements grpcStats.StatsHandler
|
||||
func (c *statsHandler) TagConn(ctx context.Context, _ *stats.ConnTagInfo) context.Context {
|
||||
// No-op
|
||||
return ctx
|
||||
}
|
||||
|
||||
// HandleConn implements grpcStats.StatsHandler
|
||||
func (c *statsHandler) HandleConn(_ context.Context, s stats.ConnStats) {
|
||||
label := "server"
|
||||
if s.IsClient() {
|
||||
label = "client"
|
||||
}
|
||||
var count uint64
|
||||
switch s.(type) {
|
||||
case *stats.ConnBegin:
|
||||
count = atomic.AddUint64(&c.activeConns, 1)
|
||||
case *stats.ConnEnd:
|
||||
// Decrement!
|
||||
count = atomic.AddUint64(&c.activeConns, ^uint64(0))
|
||||
}
|
||||
metrics.SetGauge([]string{"grpc", label, "active_conns"}, float32(count))
|
||||
}
|
||||
|
||||
type activeStreamCounter struct {
|
||||
// count of the number of open streaming RPCs on a server. It is accessed
|
||||
// atomically.
|
||||
count uint64
|
||||
}
|
||||
|
||||
// GRPCCountingStreamInterceptor is a grpc.ServerStreamInterceptor that emits a
|
||||
// a metric of the count of open streams.
|
||||
func (i *activeStreamCounter) Intercept(
|
||||
srv interface{},
|
||||
ss grpc.ServerStream,
|
||||
_ *grpc.StreamServerInfo,
|
||||
handler grpc.StreamHandler,
|
||||
) error {
|
||||
count := atomic.AddUint64(&i.count, 1)
|
||||
metrics.SetGauge([]string{"grpc", "server", "active_streams"}, float32(count))
|
||||
defer func() {
|
||||
count := atomic.AddUint64(&i.count, ^uint64(0))
|
||||
metrics.SetGauge([]string{"grpc", "server", "active_streams"}, float32(count))
|
||||
}()
|
||||
|
||||
return handler(srv, ss)
|
||||
}
|
||||
|
|
@ -0,0 +1,124 @@
|
|||
package grpc
|
||||
|
||||
import (
|
||||
"context"
|
||||
"net"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/armon/go-metrics"
|
||||
"github.com/hashicorp/consul/agent/grpc/internal/testservice"
|
||||
"github.com/stretchr/testify/require"
|
||||
"golang.org/x/sync/errgroup"
|
||||
"google.golang.org/grpc"
|
||||
)
|
||||
|
||||
func TestHandler_EmitsStats(t *testing.T) {
|
||||
sink := patchGlobalMetrics(t)
|
||||
|
||||
addr := &net.IPAddr{IP: net.ParseIP("127.0.0.1")}
|
||||
handler := NewHandler(addr)
|
||||
|
||||
testservice.RegisterSimpleServer(handler.srv, &simple{})
|
||||
|
||||
lis, err := net.Listen("tcp", "127.0.0.1:0")
|
||||
require.NoError(t, err)
|
||||
defer lis.Close()
|
||||
|
||||
ctx, cancel := context.WithCancel(context.Background())
|
||||
t.Cleanup(cancel)
|
||||
|
||||
g, ctx := errgroup.WithContext(ctx)
|
||||
g.Go(func() error {
|
||||
return handler.srv.Serve(lis)
|
||||
})
|
||||
t.Cleanup(func() {
|
||||
if err := handler.Shutdown(); err != nil {
|
||||
t.Logf("grpc server shutdown: %v", err)
|
||||
}
|
||||
if err := g.Wait(); err != nil {
|
||||
t.Logf("grpc server error: %v", err)
|
||||
}
|
||||
})
|
||||
|
||||
conn, err := grpc.DialContext(ctx, lis.Addr().String(), grpc.WithInsecure())
|
||||
require.NoError(t, err)
|
||||
defer conn.Close()
|
||||
|
||||
client := testservice.NewSimpleClient(conn)
|
||||
fClient, err := client.Flow(ctx, &testservice.Req{Datacenter: "mine"})
|
||||
require.NoError(t, err)
|
||||
|
||||
// Wait for the first event so that we know the stream is sending.
|
||||
_, err = fClient.Recv()
|
||||
require.NoError(t, err)
|
||||
|
||||
expectedCounter := []metricCall{
|
||||
{key: []string{"testing", "grpc", "server", "request"}, val: 1},
|
||||
}
|
||||
require.Equal(t, expectedCounter, sink.incrCounterCalls)
|
||||
expectedGauge := []metricCall{
|
||||
{key: []string{"testing", "grpc", "server", "active_conns"}, val: 1},
|
||||
{key: []string{"testing", "grpc", "server", "active_streams"}, val: 1},
|
||||
// TODO: why is the count reset to 0 before the client receives the second message?
|
||||
{key: []string{"testing", "grpc", "server", "active_streams"}, val: 0},
|
||||
}
|
||||
require.Equal(t, expectedGauge, sink.gaugeCalls)
|
||||
}
|
||||
|
||||
type simple struct {
|
||||
name string
|
||||
}
|
||||
|
||||
func (s *simple) Flow(_ *testservice.Req, flow testservice.Simple_FlowServer) error {
|
||||
if err := flow.Send(&testservice.Resp{ServerName: "one"}); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := flow.Send(&testservice.Resp{ServerName: "two"}); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *simple) Something(_ context.Context, _ *testservice.Req) (*testservice.Resp, error) {
|
||||
return &testservice.Resp{ServerName: "the-fake-service-name"}, nil
|
||||
}
|
||||
|
||||
func patchGlobalMetrics(t *testing.T) *fakeMetricsSink {
|
||||
t.Helper()
|
||||
|
||||
sink := &fakeMetricsSink{}
|
||||
cfg := &metrics.Config{
|
||||
ServiceName: "testing",
|
||||
TimerGranularity: time.Millisecond, // Timers are in milliseconds
|
||||
ProfileInterval: time.Second, // Poll runtime every second
|
||||
FilterDefault: true,
|
||||
}
|
||||
_, err := metrics.NewGlobal(cfg, sink)
|
||||
require.NoError(t, err)
|
||||
t.Cleanup(func() {
|
||||
_, err = metrics.NewGlobal(cfg, &metrics.BlackholeSink{})
|
||||
require.NoError(t, err, "failed to reset global metrics")
|
||||
})
|
||||
return sink
|
||||
}
|
||||
|
||||
type fakeMetricsSink struct {
|
||||
metrics.BlackholeSink
|
||||
gaugeCalls []metricCall
|
||||
incrCounterCalls []metricCall
|
||||
}
|
||||
|
||||
func (f *fakeMetricsSink) SetGaugeWithLabels(key []string, val float32, labels []metrics.Label) {
|
||||
f.gaugeCalls = append(f.gaugeCalls, metricCall{key: key, val: val, labels: labels})
|
||||
}
|
||||
|
||||
func (f *fakeMetricsSink) IncrCounterWithLabels(key []string, val float32, labels []metrics.Label) {
|
||||
f.incrCounterCalls = append(f.incrCounterCalls, metricCall{key: key, val: val, labels: labels})
|
||||
}
|
||||
|
||||
type metricCall struct {
|
||||
key []string
|
||||
val float32
|
||||
labels []metrics.Label
|
||||
}
|
||||
|
|
@ -40,23 +40,24 @@ const (
|
|||
// that is supported and it might be the only one there
|
||||
// ever is.
|
||||
RPCTLSInsecure = 7
|
||||
RPCGRPC = 8
|
||||
|
||||
// RPCMaxTypeValue is the maximum rpc type byte value currently used for
|
||||
// the various protocols riding over our "rpc" port.
|
||||
// RPCMaxTypeValue is the maximum rpc type byte value currently used for the
|
||||
// various protocols riding over our "rpc" port.
|
||||
//
|
||||
// Currently our 0-7 values are mutually exclusive with any valid first
|
||||
// byte of a TLS header. The first TLS header byte will begin with a TLS
|
||||
// content type and the values 0-19 are all explicitly unassigned and
|
||||
// marked as requiring coordination. RFC 7983 does the marking and goes
|
||||
// into some details about multiplexing connections and identifying TLS.
|
||||
// Currently our 0-8 values are mutually exclusive with any valid first byte
|
||||
// of a TLS header. The first TLS header byte will begin with a TLS content
|
||||
// type and the values 0-19 are all explicitly unassigned and marked as
|
||||
// requiring coordination. RFC 7983 does the marking and goes into some
|
||||
// details about multiplexing connections and identifying TLS.
|
||||
//
|
||||
// We use this value to determine if the incoming request is actual real
|
||||
// native TLS (where we can demultiplex based on ALPN protocol) or our
|
||||
// older type-byte system when new connections are established.
|
||||
// native TLS (where we can de-multiplex based on ALPN protocol) or our older
|
||||
// type-byte system when new connections are established.
|
||||
//
|
||||
// NOTE: if you add new RPCTypes beyond this value, you must similarly bump
|
||||
// this value.
|
||||
RPCMaxTypeValue = 7
|
||||
RPCMaxTypeValue = 8
|
||||
)
|
||||
|
||||
const (
|
||||
|
|
@ -66,6 +67,7 @@ const (
|
|||
ALPN_RPCMultiplexV2 = "consul/rpc-multi" // RPCMultiplexV2
|
||||
ALPN_RPCSnapshot = "consul/rpc-snapshot" // RPCSnapshot
|
||||
ALPN_RPCGossip = "consul/rpc-gossip" // RPCGossip
|
||||
ALPN_RPCGRPC = "consul/rpc-grpc" // RPCGRPC
|
||||
// wan federation additions
|
||||
ALPN_WANGossipPacket = "consul/wan-gossip/packet"
|
||||
ALPN_WANGossipStream = "consul/wan-gossip/stream"
|
||||
|
|
|
|||
Loading…
Reference in New Issue