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main.go
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main.go
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package main
import (
"fmt"
"os"
"strconv"
"strings"
proto "github.com/container-storage-interface/spec/lib/go/csi"
"github.com/go-kit/log"
"github.com/go-kit/log/level"
"github.com/hetznercloud/csi-driver/internal/app"
"github.com/hetznercloud/csi-driver/internal/driver"
"github.com/hetznercloud/csi-driver/internal/volumes"
"github.com/hetznercloud/hcloud-go/v2/hcloud/metadata"
)
var logger log.Logger
func main() {
logger = app.CreateLogger()
m := app.CreateMetrics(logger)
metadataClient := metadata.NewClient(metadata.WithInstrumentation(m.Registry()))
if !metadataClient.IsHcloudServer() {
level.Warn(logger).Log("msg", "unable to connect to metadata service, are you sure this is running on a Hetzner Cloud server?")
}
serverID, err := metadataClient.InstanceID()
if err != nil {
level.Error(logger).Log("msg", "failed to fetch server ID from metadata service", "err", err)
os.Exit(1)
}
serverAZ, err := metadataClient.AvailabilityZone()
if err != nil {
level.Error(logger).Log("msg", "failed to fetch server availability-zone from metadata service", "err", err)
os.Exit(1)
}
parts := strings.Split(serverAZ, "-")
if len(parts) != 2 {
level.Error(logger).Log("msg", fmt.Sprintf("unexpected server availability zone: %s", serverAZ), "err", err)
os.Exit(1)
}
serverLocation := parts[0]
level.Info(logger).Log("msg", "Fetched data from metadata service", "id", serverID, "location", serverLocation)
volumeMountService := volumes.NewLinuxMountService(
log.With(logger, "component", "linux-mount-service"),
)
volumeResizeService := volumes.NewLinuxResizeService(
log.With(logger, "component", "linux-resize-service"),
)
volumeStatsService := volumes.NewLinuxStatsService(
log.With(logger, "component", "linux-stats-service"),
)
identityService := driver.NewIdentityService(
log.With(logger, "component", "driver-identity-service"),
)
nodeService := driver.NewNodeService(
log.With(logger, "component", "driver-node-service"),
strconv.FormatInt(serverID, 10),
serverLocation,
volumeMountService,
volumeResizeService,
volumeStatsService,
)
listener, err := app.CreateListener()
if err != nil {
level.Error(logger).Log(
"msg", "failed to create listener",
"err", err,
)
os.Exit(1)
}
grpcServer := app.CreateGRPCServer(logger, m.UnaryServerInterceptor())
proto.RegisterIdentityServer(grpcServer, identityService)
proto.RegisterNodeServer(grpcServer, nodeService)
m.InitializeMetrics(grpcServer)
identityService.SetReady(true)
if err := grpcServer.Serve(listener); err != nil {
level.Error(logger).Log(
"msg", "grpc server failed",
"err", err,
)
os.Exit(1)
}
}