126 lines
3.1 KiB
Go
126 lines
3.1 KiB
Go
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/*
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Copyright 2015 The Kubernetes 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 main
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import (
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"fmt"
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"os"
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"path"
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"strings"
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)
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// Looks for lines that have kubectl commands with -f flags and files that
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// don't exist.
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func updateKubectlFileTargets(file string, mlines mungeLines) (mungeLines, error) {
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var errors []string
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for i, mline := range mlines {
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if !mline.preformatted {
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continue
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}
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if err := lookForKubectl(mline.data, i); err != nil {
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errors = append(errors, err.Error())
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}
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}
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err := error(nil)
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if len(errors) != 0 {
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err = fmt.Errorf("%s", strings.Join(errors, "\n"))
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}
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return mlines, err
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}
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func lookForKubectl(line string, lineNum int) error {
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fields := strings.Fields(line)
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for i := range fields {
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if fields[i] == "kubectl" {
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return gotKubectl(lineNum, fields, i)
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}
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}
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return nil
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}
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func gotKubectl(lineNum int, fields []string, fieldNum int) error {
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for i := fieldNum + 1; i < len(fields); i++ {
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switch fields[i] {
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case "create", "update", "replace", "delete":
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return gotCommand(lineNum, fields, i)
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}
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}
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return nil
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}
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func gotCommand(lineNum int, fields []string, fieldNum int) error {
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for i := fieldNum + 1; i < len(fields); i++ {
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if strings.HasPrefix(fields[i], "-f") {
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return gotDashF(lineNum, fields, i)
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}
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}
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return nil
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}
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func gotDashF(lineNum int, fields []string, fieldNum int) error {
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target := ""
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if fields[fieldNum] == "-f" {
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if fieldNum+1 == len(fields) {
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return fmt.Errorf("ran out of fields after '-f'")
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}
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target = fields[fieldNum+1]
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} else {
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target = fields[fieldNum][2:]
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}
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// Turn dirs into file-like names.
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target = strings.TrimRight(target, "/")
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// Now exclude special-cases
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if target == "-" || target == "FILENAME" {
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// stdin and "FILENAME" are OK
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return nil
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}
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if strings.HasPrefix(target, "http://") || strings.HasPrefix(target, "https://") {
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// URLs are ok
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return nil
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}
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if strings.HasPrefix(target, "./") {
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// Same-dir files are usually created in the same example
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return nil
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}
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if strings.HasPrefix(target, "~/") {
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// Home directory may also be created by the same example
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return nil
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}
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if strings.HasPrefix(target, "/") {
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// Absolute paths tend to be /tmp/* and created in the same example.
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return nil
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}
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if strings.HasPrefix(target, "$") {
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// Allow the start of the target to be an environment
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// variable that points to the root of the kubernetes
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// repo.
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split := strings.SplitN(target, "/", 2)
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if len(split) == 2 {
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target = split[1]
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}
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}
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// If we got here we expect the file to exist.
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_, err := os.Stat(path.Join(repoRoot, target))
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if os.IsNotExist(err) {
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return fmt.Errorf("%d: target file %q does not exist", lineNum, target)
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}
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return err
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}
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