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runner_serve.go
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runner_serve.go
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package mtls
import (
"context"
"fmt"
"net"
"os"
sourcev1 "github.com/fluxcd/source-controller/api/v1beta1"
infrav1 "github.com/weaveworks/tf-controller/api/v1alpha1"
"github.com/weaveworks/tf-controller/runner"
"google.golang.org/grpc"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
controllerruntime "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
)
func RunnerServe(namespace, addr string, tlsSecretName string, sigterm chan os.Signal, maxMessageSizeInMiB int) error {
scheme := runtime.NewScheme()
if err := clientgoscheme.AddToScheme(scheme); err != nil {
return err
}
if err := sourcev1.AddToScheme(scheme); err != nil {
return err
}
if err := infrav1.AddToScheme(scheme); err != nil {
return err
}
cfg := controllerruntime.GetConfigOrDie()
k8sClient, err := client.New(cfg, client.Options{Scheme: scheme})
if err != nil {
return err
}
if k8sClient == nil {
return fmt.Errorf("k8sClient cannot be nil")
}
// local runner, use the same client as the manager
runnerServer := &runner.TerraformRunnerServer{
Client: k8sClient,
Scheme: scheme,
Done: sigterm,
}
listener, err := net.Listen("tcp", addr)
if err != nil {
return err
}
secretKey := types.NamespacedName{Namespace: namespace, Name: tlsSecretName}
// TODO watch this Secret, then restart the server if the Secret is changed
tlsSecret := &v1.Secret{}
if err := k8sClient.Get(context.Background(), secretKey, tlsSecret); err != nil {
return err
}
credentials, err := GetGRPCServerCredentials(tlsSecret)
if err != nil {
return err
}
// 30 MB is the maximum allowed payload size for gRPC.
maxMsgSize := maxMessageSizeInMiB * 1024 * 1024
grpcServer := grpc.NewServer(grpc.Creds(credentials), grpc.MaxRecvMsgSize(maxMsgSize), grpc.MaxSendMsgSize(maxMsgSize))
runner.RegisterRunnerServer(grpcServer, runnerServer)
if err := grpcServer.Serve(listener); err != nil {
return err
}
return nil
}