mirror of
https://github.com/kubesphere/kubekey.git
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75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
/*
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Copyright 2022 The KubeSphere Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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package cloudinit
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import (
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"bufio"
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"bytes"
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"regexp"
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"strings"
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"github.com/pkg/errors"
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"github.com/kubesphere/kubekey/pkg/clients/ssh"
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)
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// getActions parses the cloud config yaml into a slice of actions to run.
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// Parsing manually is required because the order of the cloud config's actions must be maintained.
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func getActions(sshClient ssh.Interface, userData []byte) ([]action, error) {
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actionRegEx := regexp.MustCompile(`^[a-zA-Z_]*:`)
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lines := make([]string, 0)
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actions := make([]action, 0)
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actionFactory := newActionFactory(sshClient)
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var act action
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// scans the file searching for keys/top level actions.
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scanner := bufio.NewScanner(bytes.NewReader(userData))
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for scanner.Scan() {
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line := scanner.Text()
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// if the line is key/top level action
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if actionRegEx.MatchString(line) {
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// converts the file fragment scanned up to now into the current action, if any
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if act != nil {
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actionBlock := strings.Join(lines, "\n")
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if err := act.Unmarshal([]byte(actionBlock)); err != nil {
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return nil, errors.WithStack(err)
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}
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actions = append(actions, act)
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lines = lines[:0]
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}
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// creates the new action
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actionName := strings.TrimSuffix(line, ":")
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act = actionFactory.action(actionName)
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}
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lines = append(lines, line)
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}
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// converts the last file fragment scanned into the current action, if any
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if act != nil {
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actionBlock := strings.Join(lines, "\n")
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if err := act.Unmarshal([]byte(actionBlock)); err != nil {
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return nil, errors.WithStack(err)
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}
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actions = append(actions, act)
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}
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return actions, scanner.Err()
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}
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