gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/runsc/cmd/metric_server_embedded.go (about)

     1  // Copyright 2022 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package cmd
    16  
    17  import (
    18  	"context"
    19  	"os"
    20  
    21  	"github.com/google/subcommands"
    22  	"gvisor.dev/gvisor/runsc/cmd/metricserver"
    23  	"gvisor.dev/gvisor/runsc/cmd/metricserver/metricservercmd"
    24  	"gvisor.dev/gvisor/runsc/cmd/util"
    25  	"gvisor.dev/gvisor/runsc/flag"
    26  )
    27  
    28  // MetricServer implements subcommands.Command for the "metric-server" command.
    29  type MetricServer struct {
    30  	metricservercmd.Cmd
    31  }
    32  
    33  // Execute implements subcommands.Command.Execute.
    34  func (m *MetricServer) Execute(ctx context.Context, f *flag.FlagSet, args ...any) subcommands.ExitStatus {
    35  	err := metricserver.Exec(metricserver.Options{
    36  		Argv: os.Args,
    37  		Envv: os.Environ(),
    38  	})
    39  	if err != nil {
    40  		util.Fatalf("metric server: %v", err)
    41  	}
    42  	util.Fatalf("unreachable")
    43  	return subcommands.ExitFailure
    44  }