зеркало из https://github.com/microsoft/docker.git
Remove some more `opts` from runconfig (not used anymore)
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
This commit is contained in:
Vincent Demeester
Родитель
df423d5793
Коммит
b0226a890f
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@ -1,81 +0,0 @@
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package opts
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import (
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"bufio"
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"bytes"
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"fmt"
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"os"
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"strings"
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"unicode"
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"unicode/utf8"
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)
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// ParseEnvFile reads a file with environment variables enumerated by lines
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//
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// ``Environment variable names used by the utilities in the Shell and
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// Utilities volume of IEEE Std 1003.1-2001 consist solely of uppercase
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// letters, digits, and the '_' (underscore) from the characters defined in
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// Portable Character Set and do not begin with a digit. *But*, other
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// characters may be permitted by an implementation; applications shall
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// tolerate the presence of such names.''
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// -- http://pubs.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap08.html
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//
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// As of #16585, it's up to application inside docker to validate or not
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// environment variables, that's why we just strip leading whitespace and
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// nothing more.
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func ParseEnvFile(filename string) ([]string, error) {
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fh, err := os.Open(filename)
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if err != nil {
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return []string{}, err
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}
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defer fh.Close()
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lines := []string{}
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scanner := bufio.NewScanner(fh)
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currentLine := 0
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utf8bom := []byte{0xEF, 0xBB, 0xBF}
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for scanner.Scan() {
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scannedBytes := scanner.Bytes()
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if !utf8.Valid(scannedBytes) {
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return []string{}, fmt.Errorf("env file %s contains invalid utf8 bytes at line %d: %v", filename, currentLine+1, scannedBytes)
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}
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// We trim UTF8 BOM
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if currentLine == 0 {
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scannedBytes = bytes.TrimPrefix(scannedBytes, utf8bom)
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}
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// trim the line from all leading whitespace first
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line := strings.TrimLeftFunc(string(scannedBytes), unicode.IsSpace)
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currentLine++
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// line is not empty, and not starting with '#'
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if len(line) > 0 && !strings.HasPrefix(line, "#") {
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data := strings.SplitN(line, "=", 2)
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// trim the front of a variable, but nothing else
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variable := strings.TrimLeft(data[0], whiteSpaces)
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if strings.ContainsAny(variable, whiteSpaces) {
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return []string{}, ErrBadEnvVariable{fmt.Sprintf("variable '%s' has white spaces", variable)}
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}
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if len(data) > 1 {
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// pass the value through, no trimming
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lines = append(lines, fmt.Sprintf("%s=%s", variable, data[1]))
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} else {
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// if only a pass-through variable is given, clean it up.
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lines = append(lines, fmt.Sprintf("%s=%s", strings.TrimSpace(line), os.Getenv(line)))
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}
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}
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}
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return lines, scanner.Err()
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}
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var whiteSpaces = " \t"
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// ErrBadEnvVariable typed error for bad environment variable
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type ErrBadEnvVariable struct {
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msg string
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}
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func (e ErrBadEnvVariable) Error() string {
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return fmt.Sprintf("poorly formatted environment: %s", e.msg)
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}
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@ -1,141 +0,0 @@
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package opts
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import (
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"bufio"
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"fmt"
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"io/ioutil"
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"os"
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"reflect"
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"strings"
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"testing"
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)
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func tmpFileWithContent(content string, t *testing.T) string {
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tmpFile, err := ioutil.TempFile("", "envfile-test")
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if err != nil {
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t.Fatal(err)
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}
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defer tmpFile.Close()
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tmpFile.WriteString(content)
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return tmpFile.Name()
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}
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// Test ParseEnvFile for a file with a few well formatted lines
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func TestParseEnvFileGoodFile(t *testing.T) {
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content := `foo=bar
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baz=quux
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# comment
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_foobar=foobaz
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with.dots=working
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and_underscore=working too
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`
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// Adding a newline + a line with pure whitespace.
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// This is being done like this instead of the block above
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// because it's common for editors to trim trailing whitespace
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// from lines, which becomes annoying since that's the
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// exact thing we need to test.
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content += "\n \t "
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tmpFile := tmpFileWithContent(content, t)
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defer os.Remove(tmpFile)
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lines, err := ParseEnvFile(tmpFile)
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if err != nil {
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t.Fatal(err)
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}
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expectedLines := []string{
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"foo=bar",
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"baz=quux",
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"_foobar=foobaz",
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"with.dots=working",
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"and_underscore=working too",
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}
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if !reflect.DeepEqual(lines, expectedLines) {
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t.Fatal("lines not equal to expectedLines")
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}
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}
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// Test ParseEnvFile for an empty file
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func TestParseEnvFileEmptyFile(t *testing.T) {
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tmpFile := tmpFileWithContent("", t)
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defer os.Remove(tmpFile)
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lines, err := ParseEnvFile(tmpFile)
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if err != nil {
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t.Fatal(err)
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}
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if len(lines) != 0 {
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t.Fatal("lines not empty; expected empty")
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}
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}
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// Test ParseEnvFile for a non existent file
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func TestParseEnvFileNonExistentFile(t *testing.T) {
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_, err := ParseEnvFile("foo_bar_baz")
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if err == nil {
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t.Fatal("ParseEnvFile succeeded; expected failure")
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}
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if _, ok := err.(*os.PathError); !ok {
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t.Fatalf("Expected a PathError, got [%v]", err)
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}
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}
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// Test ParseEnvFile for a badly formatted file
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func TestParseEnvFileBadlyFormattedFile(t *testing.T) {
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content := `foo=bar
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f =quux
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`
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tmpFile := tmpFileWithContent(content, t)
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defer os.Remove(tmpFile)
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_, err := ParseEnvFile(tmpFile)
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if err == nil {
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t.Fatalf("Expected an ErrBadEnvVariable, got nothing")
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}
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if _, ok := err.(ErrBadEnvVariable); !ok {
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t.Fatalf("Expected an ErrBadEnvVariable, got [%v]", err)
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}
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expectedMessage := "poorly formatted environment: variable 'f ' has white spaces"
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if err.Error() != expectedMessage {
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t.Fatalf("Expected [%v], got [%v]", expectedMessage, err.Error())
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}
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}
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// Test ParseEnvFile for a file with a line exceeding bufio.MaxScanTokenSize
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func TestParseEnvFileLineTooLongFile(t *testing.T) {
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content := strings.Repeat("a", bufio.MaxScanTokenSize+42)
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content = fmt.Sprint("foo=", content)
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tmpFile := tmpFileWithContent(content, t)
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defer os.Remove(tmpFile)
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_, err := ParseEnvFile(tmpFile)
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if err == nil {
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t.Fatal("ParseEnvFile succeeded; expected failure")
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}
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}
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// ParseEnvFile with a random file, pass through
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func TestParseEnvFileRandomFile(t *testing.T) {
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content := `first line
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another invalid line`
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tmpFile := tmpFileWithContent(content, t)
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defer os.Remove(tmpFile)
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_, err := ParseEnvFile(tmpFile)
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if err == nil {
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t.Fatalf("Expected an ErrBadEnvVariable, got nothing")
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}
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if _, ok := err.(ErrBadEnvVariable); !ok {
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t.Fatalf("Expected an ErrBadEnvVariable, got [%v]", err)
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}
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expectedMessage := "poorly formatted environment: variable 'first line' has white spaces"
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if err.Error() != expectedMessage {
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t.Fatalf("Expected [%v], got [%v]", expectedMessage, err.Error())
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}
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}
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@ -1,30 +1,9 @@
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package opts
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import (
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"fmt"
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"strconv"
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"strings"
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"github.com/docker/docker/api/types/container"
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)
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// ReadKVStrings reads a file of line terminated key=value pairs, and overrides any keys
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// present in the file with additional pairs specified in the override parameter
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func ReadKVStrings(files []string, override []string) ([]string, error) {
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envVariables := []string{}
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for _, ef := range files {
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parsedVars, err := ParseEnvFile(ef)
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if err != nil {
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return nil, err
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}
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envVariables = append(envVariables, parsedVars...)
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}
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// parse the '-e' and '--env' after, to allow override
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envVariables = append(envVariables, override...)
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return envVariables, nil
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}
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// ConvertKVStringsToMap converts ["key=value"] to {"key":"value"}
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func ConvertKVStringsToMap(values []string) map[string]string {
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result := make(map[string]string, len(values))
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@ -39,49 +18,3 @@ func ConvertKVStringsToMap(values []string) map[string]string {
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return result
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}
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// ConvertKVStringsToMapWithNil converts ["key=value"] to {"key":"value"}
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// but set unset keys to nil - meaning the ones with no "=" in them.
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// We use this in cases where we need to distinguish between
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// FOO= and FOO
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// where the latter case just means FOO was mentioned but not given a value
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func ConvertKVStringsToMapWithNil(values []string) map[string]*string {
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result := make(map[string]*string, len(values))
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for _, value := range values {
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kv := strings.SplitN(value, "=", 2)
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if len(kv) == 1 {
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result[kv[0]] = nil
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} else {
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result[kv[0]] = &kv[1]
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}
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}
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return result
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}
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// ParseRestartPolicy returns the parsed policy or an error indicating what is incorrect
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func ParseRestartPolicy(policy string) (container.RestartPolicy, error) {
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p := container.RestartPolicy{}
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if policy == "" {
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return p, nil
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}
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parts := strings.Split(policy, ":")
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if len(parts) > 2 {
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return p, fmt.Errorf("invalid restart policy format")
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}
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if len(parts) == 2 {
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count, err := strconv.Atoi(parts[1])
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if err != nil {
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return p, fmt.Errorf("maximum retry count must be an integer")
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}
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p.MaximumRetryCount = count
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}
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p.Name = parts[0]
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return p, nil
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}
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