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External Network: connection controller
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| Original file line number | Diff line number | Diff line change |
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| FROM golang:1.21 as goBuilder | ||
| WORKDIR /tmp/builder | ||
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| COPY go.mod ./go.mod | ||
| COPY go.sum ./go.sum | ||
| RUN go mod download | ||
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| COPY . ./ | ||
| RUN CGO_ENABLED=0 GOOS=linux GOARCH=$(go env GOARCH) go build -ldflags="-s -w" ./cmd/gateway | ||
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| FROM alpine:3.18 | ||
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| RUN apk update && \ | ||
| apk add iptables bash tcpdump conntrack-tools curl iputils && \ | ||
| rm -rf /var/cache/apk/* | ||
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| COPY --from=goBuilder /tmp/builder/gateway /usr/bin/liqo-gateway | ||
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| ENTRYPOINT [ "/usr/bin/liqo-gateway" ] |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,135 @@ | ||
| // Copyright 2019-2023 The Liqo Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| // Package wireguard contains the logic to configure the Wireguard interface. | ||
| package main | ||
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| import ( | ||
| "flag" | ||
| "fmt" | ||
| "os" | ||
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| "github.com/spf13/cobra" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "k8s.io/client-go/tools/leaderelection/resourcelock" | ||
| "k8s.io/klog/v2" | ||
| ctrl "sigs.k8s.io/controller-runtime" | ||
| "sigs.k8s.io/controller-runtime/pkg/client/config" | ||
| "sigs.k8s.io/controller-runtime/pkg/log" | ||
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| networkingv1alpha1 "github.com/liqotech/liqo/apis/networking/v1alpha1" | ||
| "github.com/liqotech/liqo/pkg/gateway" | ||
| "github.com/liqotech/liqo/pkg/gateway/connection" | ||
| flagsutils "github.com/liqotech/liqo/pkg/utils/flags" | ||
| "github.com/liqotech/liqo/pkg/utils/mapper" | ||
| "github.com/liqotech/liqo/pkg/utils/restcfg" | ||
| ) | ||
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| var ( | ||
| addToSchemeFunctions = []func(*runtime.Scheme) error{ | ||
| networkingv1alpha1.AddToScheme, | ||
| } | ||
| options = gateway.NewOptions() | ||
| ) | ||
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| func main() { | ||
| var cmd = cobra.Command{ | ||
| Use: "liqo-gateway", | ||
| RunE: run, | ||
| } | ||
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| legacyflags := flag.NewFlagSet("legacy", flag.ExitOnError) | ||
| restcfg.InitFlags(legacyflags) | ||
| klog.InitFlags(legacyflags) | ||
| flagsutils.FromFlagToPflag(legacyflags, cmd.Flags()) | ||
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| gateway.InitFlags(cmd.Flags(), options) | ||
| if err := gateway.MarkFlagsRequired(&cmd); err != nil { | ||
| klog.Error(err) | ||
| os.Exit(1) | ||
| } | ||
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| connection.InitFlags(cmd.Flags()) | ||
| if err := connection.MarkFlagsRequired(&cmd); err != nil { | ||
| klog.Error(err) | ||
| os.Exit(1) | ||
| } | ||
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| if err := cmd.Execute(); err != nil { | ||
| klog.Error(err) | ||
| os.Exit(1) | ||
| } | ||
| } | ||
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| func run(_ *cobra.Command, _ []string) error { | ||
| var err error | ||
| ctx := ctrl.SetupSignalHandler() | ||
| scheme := runtime.NewScheme() | ||
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| // Adds the APIs to the scheme. | ||
| for _, addToScheme := range addToSchemeFunctions { | ||
| if err = addToScheme(scheme); err != nil { | ||
| return fmt.Errorf("unable to add scheme: %w", err) | ||
| } | ||
| } | ||
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| // Set controller-runtime logger. | ||
| log.SetLogger(klog.NewKlogr()) | ||
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| // Get the rest config. | ||
| cfg := config.GetConfigOrDie() | ||
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| // Create the manager. | ||
| mgr, err := ctrl.NewManager(cfg, ctrl.Options{ | ||
| MapperProvider: mapper.LiqoMapperProvider(scheme), | ||
| Scheme: scheme, | ||
| Namespace: options.Namespace, | ||
| MetricsBindAddress: "0", // Metrics are exposed by "connection" container. | ||
| HealthProbeBindAddress: options.ProbeAddr, | ||
| LeaderElection: options.LeaderElection, | ||
| LeaderElectionID: fmt.Sprintf( | ||
| "%s.%s.%s.connections.liqo.io", | ||
| options.Name, options.Namespace, options.Mode, | ||
| ), | ||
| LeaderElectionNamespace: options.Namespace, | ||
| LeaderElectionReleaseOnCancel: true, | ||
| LeaderElectionResourceLock: resourcelock.LeasesResourceLock, | ||
| LeaseDuration: &options.LeaderElectionLeaseDuration, | ||
| RenewDeadline: &options.LeaderElectionRenewDeadline, | ||
| RetryPeriod: &options.LeaderElectionRetryPeriod, | ||
| }) | ||
| if err != nil { | ||
| return fmt.Errorf("unable to create manager: %w", err) | ||
| } | ||
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| // Setup the controller. | ||
| connr, err := connection.NewConnectionsReconciler( | ||
| ctx, | ||
| mgr.GetClient(), | ||
| mgr.GetScheme(), | ||
| mgr.GetEventRecorderFor("connections-controller"), | ||
| options, | ||
| ) | ||
| if err != nil { | ||
| return fmt.Errorf("unable to create connectioons reconciler: %w", err) | ||
| } | ||
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| // Setup the controller. | ||
| if err = connr.SetupWithManager(mgr); err != nil { | ||
| return fmt.Errorf("unable to setup connections reconciler: %w", err) | ||
| } | ||
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| // Start the manager. | ||
| return mgr.Start(ctx) | ||
| } |
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