first commit

netclient/functions/old/root.go

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+/*
+Copyright © 2021 NAME HERE <EMAIL ADDRESS>
+
+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 cmd
+
+import (
+  "fmt"
+  "os"
+  "github.com/spf13/cobra"
+  "context"
+  homedir "github.com/mitchellh/go-homedir"
+  "github.com/spf13/viper"
+  "time"
+  "log"
+  nodepb "github.com/gravitl/netmaker/grpc"
+  "google.golang.org/grpc"
+
+)
+
+
+var cfgFile string
+
+
+var client nodepb.NodeServiceClient
+var requestCtx context.Context
+var requestOpts grpc.DialOption
+
+// rootCmd represents the base command when called without any subcommands
+var rootCmd = &cobra.Command{
+  Use:   "grpc-test",
+  Short: "A test cli which may or may not turn into a real one",
+  Long: `huh. this isn't very long at all, is it?`,
+  // Uncomment the following line if your bare application
+  // has an action associated with it:
+  //	Run: func(cmd *cobra.Command, args []string) { },
+}
+
+// Execute adds all child commands to the root command and sets flags appropriately.
+// This is called by main.main(). It only needs to happen once to the rootCmd.
+func Execute() {
+  if err := rootCmd.Execute(); err != nil {
+    fmt.Println(err)
+    os.Exit(1)
+  }
+}
+
+func init() {
+  cobra.OnInitialize(initConfig)
+
+  // Here you will define your flags and configuration settings.
+  // Cobra supports persistent flags, which, if defined here,
+  // will be global for your application.
+
+	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.blogclient.yaml)")
+
+	// Cobra also supports local flags, which will only run
+	// when this action is called directly.
+	rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+
+  fmt.Println("Starting Node Service Client")
+
+  // Establish context to timeout after 10 seconds if server does not respond
+  requestCtx, _ = context.WithTimeout(context.Background(), 10*time.Second)
+  // Establish insecure grpc options (no TLS)
+  requestOpts = grpc.WithInsecure()
+  // Dial the server, returns a client connection
+  conn, err := grpc.Dial("localhost:50051", requestOpts)
+  if err != nil {
+	log.Fatalf("Unable to establish client connection to localhost:50051: %v", err)
+  }
+  // Instantiate the BlogServiceClient with our client connection to the server
+  client = nodepb.NewNodeServiceClient(conn)
+}
+
+
+// initConfig reads in config file and ENV variables if set.
+func initConfig() {
+  if cfgFile != "" {
+    // Use config file from the flag.
+    viper.SetConfigFile(cfgFile)
+  } else {
+    // Find home directory.
+    home, err := homedir.Dir()
+    if err != nil {
+      fmt.Println(err)
+      os.Exit(1)
+    }
+
+    // Search config in home directory with name ".grpc-test" (without extension).
+    viper.AddConfigPath(home)
+    viper.SetConfigName(".grpc-test")
+  }
+
+  viper.AutomaticEnv() // read in environment variables that match
+
+  // If a config file is found, read it in.
+  if err := viper.ReadInConfig(); err == nil {
+    fmt.Println("Using config file:", viper.ConfigFileUsed())
+  }
+}
+