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https://github.com/edgelesssys/constellation.git
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2d8fcd9bf4
Co-authored-by: Malte Poll <mp@edgeless.systems> Co-authored-by: katexochen <katexochen@users.noreply.github.com> Co-authored-by: Daniel Weiße <dw@edgeless.systems> Co-authored-by: Thomas Tendyck <tt@edgeless.systems> Co-authored-by: Benedict Schlueter <bs@edgeless.systems> Co-authored-by: leongross <leon.gross@rub.de> Co-authored-by: Moritz Eckert <m1gh7ym0@gmail.com>
115 lines
2.9 KiB
Go
115 lines
2.9 KiB
Go
// Package pubapi implements the API that a peer exposes publicly.
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package pubapi
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import (
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"context"
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"net"
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"sync"
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"time"
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"github.com/edgelesssys/constellation/coordinator/atls"
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"github.com/edgelesssys/constellation/coordinator/pubapi/pubproto"
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"go.uber.org/zap"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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"google.golang.org/grpc/credentials/insecure"
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)
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const (
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deadlineDuration = time.Minute
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endpointAVPNPort = "9000"
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vpnAPIPort = "9027"
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updateInterval = 10 * time.Second
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)
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// API is the API.
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type API struct {
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mut sync.Mutex
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logger *zap.Logger
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core Core
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dialer Dialer
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vpnAPIServer VPNAPIServer
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validator atls.Validator
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getPublicIPAddr GetIPAddrFunc
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stopUpdate chan struct{}
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wgClose sync.WaitGroup
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resourceVersion int
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pubproto.UnimplementedAPIServer
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}
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// New creates a new API.
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func New(logger *zap.Logger, core Core, dialer Dialer, vpnAPIServer VPNAPIServer, validator atls.Validator, getPublicIPAddr GetIPAddrFunc) *API {
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return &API{
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logger: logger,
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core: core,
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dialer: dialer,
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vpnAPIServer: vpnAPIServer,
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validator: validator,
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getPublicIPAddr: getPublicIPAddr,
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stopUpdate: make(chan struct{}, 1),
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}
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}
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// GetState is the RPC call to get the peer's state.
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func (a *API) GetState(ctx context.Context, in *pubproto.GetStateRequest) (*pubproto.GetStateResponse, error) {
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return &pubproto.GetStateResponse{State: uint32(a.core.GetState())}, nil
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}
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// Close closes the API.
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func (a *API) Close() {
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a.stopUpdate <- struct{}{}
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if a.vpnAPIServer != nil {
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a.vpnAPIServer.Close()
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}
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a.wgClose.Wait()
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}
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func (a *API) dial(ctx context.Context, target string) (*grpc.ClientConn, error) {
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tlsConfig, err := atls.CreateAttestationClientTLSConfig([]atls.Validator{a.validator})
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if err != nil {
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return nil, err
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}
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return grpc.DialContext(ctx, target,
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a.grpcWithDialer(),
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grpc.WithTransportCredentials(credentials.NewTLS(tlsConfig)),
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)
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}
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func (a *API) dialInsecure(ctx context.Context, target string) (*grpc.ClientConn, error) {
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return grpc.DialContext(ctx, target,
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a.grpcWithDialer(),
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grpc.WithTransportCredentials(insecure.NewCredentials()),
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)
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}
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func (a *API) dialNoVerify(ctx context.Context, target string) (*grpc.ClientConn, error) {
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tlsConfig, err := atls.CreateUnverifiedClientTLSConfig()
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if err != nil {
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return nil, err
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}
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return grpc.DialContext(ctx, target,
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a.grpcWithDialer(),
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grpc.WithTransportCredentials(credentials.NewTLS(tlsConfig)),
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)
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}
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func (a *API) grpcWithDialer() grpc.DialOption {
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return grpc.WithContextDialer(func(ctx context.Context, addr string) (net.Conn, error) {
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return a.dialer.DialContext(ctx, "tcp", addr)
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})
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}
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type Dialer interface {
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DialContext(ctx context.Context, network, address string) (net.Conn, error)
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}
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type VPNAPIServer interface {
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Listen(endpoint string) error
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Serve() error
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Close()
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}
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type GetIPAddrFunc func() (string, error)
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