Matthew Stobbs
e68723738b
- simplified configuration file - simplified to only use ipv4 and macaddresses for now - added update query - if insert fails with already exists error, try to update instead
97 lines
2.4 KiB
Go
97 lines
2.4 KiB
Go
/*
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Copyright © 2024 Matthew Stobbs <matthew@stobbs.ca>
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*/
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package cmd
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import (
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"errors"
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"log/slog"
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"os"
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"strconv"
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"git.staur.ca/stobbsm/kea-manage/ipv4/reservation"
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"git.staur.ca/stobbsm/kea-manage/lib/database"
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"git.staur.ca/stobbsm/kea-manage/lib/database/postgres"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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)
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// rootCmd represents the base command when called without any subcommands
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var rootCmd = &cobra.Command{
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Use: "kea-manage",
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Short: "Manage the isc-kea dhcp server",
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Long: `Manage the isc-kea dhcp server backend in database.`,
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Run: runMain,
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}
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// Execute adds all child commands to the root command and sets flags appropriately.
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// This is called by main.main(). It only needs to happen once to the rootCmd.
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func Execute() {
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err := rootCmd.Execute()
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if err != nil {
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os.Exit(1)
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}
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}
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func init() {
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}
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// Manage kea dhcp host reservations in postgresql directly
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// postgresql schema used from [https://gitlab.isc.org/isc-projects/kea/-/wikis/docs/editing-host-reservations]
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// This will only work with hw-address identifiers. If I need support for more, I'll add it
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func runMain(cmd *cobra.Command, args []string) {
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reslist := []*reservation.ReservationV4{}
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vlist := viper.Get("reservationV4").(map[string]any)
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for k, v := range vlist {
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v := v.([]any)
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ki, err := strconv.ParseInt(k, 10, 0)
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if err != nil {
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slog.Error("reservation", slog.Any("subnetid", err.Error()))
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continue
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}
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for _, vi := range v {
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vi := vi.(map[string]any)
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r := reservation.ReserveV4MacAddr(
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vi["identifier"].(string),
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vi["ipv4"].(string),
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vi["hostname"].(string),
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int(ki),
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)
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if !r.Validate() {
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slog.Error("reservation", slog.Any("validate", r))
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continue
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}
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reslist = append(
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reslist,
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r,
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)
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}
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}
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slog.Debug("reslist", slog.Any("slice", reslist))
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dbconf := viper.GetStringMapString("database")
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pg := postgres.Open(dbconf["host"], dbconf["port"], dbconf["user"], dbconf["password"], dbconf["name"])
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for _, v := range reslist {
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v := v
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if err := pg.InsertResV4(v); err != nil {
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if errors.As(err, &database.Exists) {
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if err := pg.UpdateResV4(v); err != nil {
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slog.Error("update", slog.Any("reservation", *v))
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continue
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}
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slog.Info("updated", slog.Any("hostname", v.Hostname))
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} else {
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slog.Error(err.Error())
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}
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continue
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}
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slog.Info("inserted", slog.Any("reservation", *v))
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}
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}
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