CLI: Exec subcommand host

cmd/hosts.go

@@ -0,0 +1,55 @@
+package cmd
+
+import (
+	"git.andrewnw.xyz/CyberShell/backy/pkg/backy"
+	"git.andrewnw.xyz/CyberShell/backy/pkg/logging"
+	"github.com/spf13/cobra"
+)
+
+var (
+	hostsExecCommand = &cobra.Command{
+		Use:   "hosts [--command=command1 --command=command2 ... | -c command1 -c command2 ...]",
+		Short: "Runs command defined in config file on the hosts in order specified.",
+		Long:  "Hosts executes specified commands on all the hosts defined in config file.\nUse the --commands or -c flag to choose the commands.",
+		Run:   Hosts,
+	}
+)
+
+func init() {
+
+	hostsExecCommand.Flags().StringArrayVarP(&cmdList, "command", "c", nil, "Accepts space-separated names of commands. Specify multiple times for multiple commands.")
+	parseS3Config()
+
+}
+
+// cli input should be hosts and commands. Hosts are defined in config files.
+// commands can be passed by the following mutually exclusive options:
+//    1. as a list of commands defined in the config file
+//    2. stdin (on command line) (TODO)
+
+func Hosts(cmd *cobra.Command, args []string) {
+	backyConfOpts := backy.NewConfigOptions(configFile,
+		backy.SetLogFile(logFile),
+		backy.EnableCommandStdOut(cmdStdOut),
+		backy.SetHostsConfigFile(hostsConfigFile))
+	backyConfOpts.InitConfig()
+
+	backyConfOpts.ParseConfigurationFile()
+
+	for _, h := range backyConfOpts.Hosts {
+
+		hostsList = append(hostsList, h.Host)
+	}
+
+	if cmdList == nil {
+		logging.ExitWithMSG("error: commands must be specified", 1, &backyConfOpts.Logger)
+	}
+	for _, c := range cmdList {
+		_, cmdFound := backyConfOpts.Cmds[c]
+		if !cmdFound {
+			logging.ExitWithMSG("cmd "+c+" not found", 1, &backyConfOpts.Logger)
+		}
+	}
+
+	backyConfOpts.ExecCmdsOnHosts(cmdList, hostsList)
+}