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anapaya-hackathon: enable gateway connect rpcs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| load("//tools/lint:go.bzl", "go_library") | ||
|
|
||
| go_library( | ||
| name = "go_default_library", | ||
| srcs = [ | ||
| "discoverer.go", | ||
| "prefix_fetcher.go", | ||
| "prefix_server.go", | ||
| ], | ||
| importpath = "github.com/scionproto/scion/gateway/control/connect", | ||
| visibility = ["//visibility:public"], | ||
| deps = [ | ||
| "//gateway/control:go_default_library", | ||
| "//gateway/control/grpc:go_default_library", | ||
| "//pkg/addr:go_default_library", | ||
| "//pkg/connect:go_default_library", | ||
| "//pkg/private/serrors:go_default_library", | ||
| "//pkg/proto/discovery:go_default_library", | ||
| "//pkg/proto/discovery/v1/discoveryconnect:go_default_library", | ||
| "//pkg/proto/gateway:go_default_library", | ||
| "//pkg/proto/gateway/v1/gatewayconnect:go_default_library", | ||
| "//pkg/snet:go_default_library", | ||
| "@com_connectrpc_connect//:go_default_library", | ||
| "@com_github_quic_go_quic_go//http3:go_default_library", | ||
| ], | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| package connect | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| "connectrpc.com/connect" | ||
| "github.com/quic-go/quic-go/http3" | ||
| "github.com/scionproto/scion/gateway/control" | ||
| "github.com/scionproto/scion/gateway/control/grpc" | ||
| "github.com/scionproto/scion/pkg/addr" | ||
| libconnect "github.com/scionproto/scion/pkg/connect" | ||
| "github.com/scionproto/scion/pkg/private/serrors" | ||
| dpb "github.com/scionproto/scion/pkg/proto/discovery" | ||
| "github.com/scionproto/scion/pkg/proto/discovery/v1/discoveryconnect" | ||
| "github.com/scionproto/scion/pkg/snet" | ||
| ) | ||
|
|
||
| // Discoverer discovers the gateways for a specific remote AS. | ||
| type Discoverer struct { | ||
| // Remote is the ISD-AS of the remote AS. | ||
| Remote addr.IA | ||
| // Dialer dials a new QUIC connection. | ||
| Dialer libconnect.Dialer | ||
| // Paths is a registration for the paths to the remote AS. | ||
| Paths control.PathMonitorRegistration | ||
| } | ||
|
|
||
| func (d Discoverer) Gateways(ctx context.Context) ([]control.Gateway, error) { | ||
| paths := d.Paths.Get().Paths | ||
| if len(paths) == 0 { | ||
| return nil, serrors.New("no path available") | ||
| } | ||
| ds := &snet.SVCAddr{ | ||
| IA: d.Remote, | ||
| Path: paths[0].Dataplane(), | ||
| NextHop: paths[0].UnderlayNextHop(), | ||
| SVC: addr.SvcDS, | ||
| } | ||
|
|
||
| dialer := d.Dialer(ds) | ||
| client := discoveryconnect.NewDiscoveryServiceClient( | ||
| libconnect.HTTPClient{ | ||
| RoundTripper: &http3.RoundTripper{ | ||
| Dial: dialer.DialEarly, | ||
| }, | ||
| }, | ||
| libconnect.BaseUrl(ds), | ||
| ) | ||
|
|
||
| rep, err := client.Gateways(ctx, connect.NewRequest(&dpb.GatewaysRequest{})) | ||
| if err != nil { | ||
| return nil, serrors.WrapStr("receiving gateways", err) | ||
| } | ||
| return grpc.TransformGateways(rep.Msg.Gateways) | ||
| } |
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