mirror of
https://github.com/arangodb/kube-arangodb.git
synced 2024-12-14 11:57:37 +00:00
162 lines
4.5 KiB
Go
162 lines
4.5 KiB
Go
//
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// DISCLAIMER
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//
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// Copyright 2020 ArangoDB GmbH, Cologne, Germany
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Copyright holder is ArangoDB GmbH, Cologne, Germany
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//
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package cmd
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import (
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"fmt"
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"io/ioutil"
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"os"
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"strings"
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"github.com/pkg/errors"
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"github.com/rs/zerolog/log"
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"github.com/spf13/cobra"
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)
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type cmdUUIDInputStruct struct {
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uuidPath, uuid, engine, enginePath string
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require bool
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}
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var (
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cmdUUID = &cobra.Command{
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Use: "uuid",
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RunE: cmdUUIDSave,
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Hidden: true,
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}
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cmdUUIDInput cmdUUIDInputStruct
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)
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func init() {
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cmdMain.AddCommand(cmdUUID)
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f := cmdUUID.Flags()
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f.StringVar(&cmdUUIDInput.uuidPath, "uuid-path", "", "Path to the UUID file")
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f.StringVar(&cmdUUIDInput.engine, "engine", "", "Path to the ENGINE file")
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f.StringVar(&cmdUUIDInput.uuid, "uuid", "", "UUID of server")
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f.StringVar(&cmdUUIDInput.enginePath, "engine-path", "", "ENGINE of server")
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f.BoolVar(&cmdUUIDInput.require, "require", false, "Ensure that UUID and ENGINE file is in place")
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}
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func cmdUUIDSave(cmd *cobra.Command, args []string) error {
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if cmdUUIDInput.uuidPath == "" {
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return errors.Errorf("Path cannot be empty")
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}
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if cmdUUIDInput.require {
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if cmdUUIDInput.enginePath == "" {
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return errors.Errorf("Path to the ENGINE cannot be empty")
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}
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if cmdUUIDInput.engine == "" {
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return errors.Errorf("ENGINE cannot be empty")
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}
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}
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if cmdUUIDInput.uuid == "" {
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return errors.Errorf("UUID cannot be empty")
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}
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log.Info().Msg("Saving UUID in file")
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if exists, err := fileExists(cmdUUIDInput.uuidPath); err != nil {
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log.Error().Err(err).Msg("Unable to get file info")
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return err
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} else if !exists {
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if cmdUUIDInput.require {
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log.Warn().Msg("Init phase is not defined, but file does not exists")
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if exists, err := fileExists(cmdUUIDInput.uuidPath); err != nil {
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log.Error().Err(err).Msg("Unable to get ENGINE info")
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return err
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} else if !exists {
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log.Info().Msg("ENGINE file does not exist - able to proceed")
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} else {
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log.Error().Msg("ENGINE file found but UUID is missing - will not proceed")
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return errors.Errorf("ENGINE file found but UUID is missing - will not proceed")
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}
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}
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fileContent := fmt.Sprintf("%s\n", cmdUUIDInput.uuid)
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if err := ioutil.WriteFile(cmdUUIDInput.uuidPath, []byte(fileContent), 0644); err != nil {
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log.Error().Err(err).Msg("Unable to save UUID")
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return err
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}
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log.Info().Msg("UUID saved")
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return nil
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}
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if equal, content, err := checkFileContent(cmdUUIDInput.uuidPath, cmdUUIDInput.uuid); err != nil {
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log.Error().Err(err).Msg("Unable to get UUID info")
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return err
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} else if !equal {
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log.Error().Str("expected", cmdUUIDInput.uuid).Str("actual", content).Msg("UUID does not match expected")
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return errors.Errorf("UUID mismatch")
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} else {
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log.Info().Msg("UUID is valid")
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}
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if cmdUUIDInput.require {
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if exists, err := fileExists(cmdUUIDInput.enginePath); err != nil {
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log.Error().Err(err).Msg("Unable to get ENGINE info")
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return err
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} else if exists {
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if equal, content, err := checkFileContent(cmdUUIDInput.enginePath, cmdUUIDInput.engine); err != nil {
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log.Error().Err(err).Msg("Unable to get ENGINE info")
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return err
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} else if !equal {
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log.Error().Str("expected", cmdUUIDInput.engine).Str("actual", content).Msg("ENGINE does not match expected")
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return errors.Errorf("ENGINE mismatch")
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} else {
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log.Info().Msg("ENGINE is valid")
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}
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} else {
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log.Info().Msg("ENGINE file is missing, but UUID is in place - we can proceed")
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}
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}
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log.Info().Msg("Init Phase is valid")
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return nil
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}
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func fileExists(path string) (bool, error) {
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if _, err := os.Stat(path); err != nil {
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if os.IsNotExist(err) {
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return false, nil
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}
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return false, err
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}
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return true, nil
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}
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func checkFileContent(path, expected string) (bool, string, error) {
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content, err := ioutil.ReadFile(path)
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if err != nil {
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return false, "", err
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}
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contentString := strings.TrimSuffix(string(content), "\n")
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return contentString == expected, contentString, nil
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}
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