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check_manager.go
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check_manager.go
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// Copyright (c) 2022 Intel Corporation. All Rights Reserved.
//
// 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.
package agent
import (
"fmt"
"os"
"time"
"github.com/ipdk-io/k8s-infra-offload/pkg/types"
"github.com/ipdk-io/k8s-infra-offload/pkg/utils"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
const sleepDuration = time.Millisecond * 100
var (
grpcDialFunc = utils.GrpcDialWithCred
)
func init() {
var timeoutString string
checkManager.PersistentFlags().StringVar(&timeoutString, "timeout", "0s", "timeout after which program return error if file does not exist, passing duration <= 0 means wait forever.")
if err := viper.BindPFlag("timeout", checkManager.PersistentFlags().Lookup("timeout")); err != nil {
fmt.Fprintf(os.Stderr, "There was an error while binding flags '%s'", err)
os.Exit(1)
}
rootCmd.AddCommand(checkManager)
}
var checkManager = &cobra.Command{
Use: "checkManager",
Short: "Wait until Infra Manager is running",
SilenceUsage: true,
SilenceErrors: true,
RunE: func(cmd *cobra.Command, args []string) error {
timeout, err := time.ParseDuration(viper.GetString("timeout"))
if err != nil {
return err
}
if timeout == 0 {
fmt.Fprintln(os.Stdout, "Waiting for Infra Manager to be running")
} else {
fmt.Fprintf(os.Stdout, "Waiting for Infra Manager to be running for %s\n", viper.GetString("timeout"))
}
types.InfraManagerAddr = viper.GetString("managerAddr")
types.InfraManagerPort = viper.GetString("managerPort")
managerAddr := fmt.Sprintf("%s:%s", types.InfraManagerAddr, types.InfraManagerPort)
watcher := utils.NewGrpcWatcher(timeout, sleepDuration, managerAddr, grpcDialFunc, utils.CheckGrpcServerStatus)
if err := utils.WaitFor(watcher); err != nil {
return err
}
fmt.Fprintln(os.Stdout, "Infra Manager is serving. Exit.")
return nil
},
}