Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/k8s.io/apimachinery/pkg/util/validation/validation.go b/vendor/k8s.io/apimachinery/pkg/util/validation/validation.go
new file mode 100644
index 0000000..e0d1715
--- /dev/null
+++ b/vendor/k8s.io/apimachinery/pkg/util/validation/validation.go
@@ -0,0 +1,407 @@
+/*
+Copyright 2014 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package validation
+
+import (
+ "fmt"
+ "math"
+ "net"
+ "regexp"
+ "strconv"
+ "strings"
+
+ "k8s.io/apimachinery/pkg/util/validation/field"
+)
+
+const qnameCharFmt string = "[A-Za-z0-9]"
+const qnameExtCharFmt string = "[-A-Za-z0-9_.]"
+const qualifiedNameFmt string = "(" + qnameCharFmt + qnameExtCharFmt + "*)?" + qnameCharFmt
+const qualifiedNameErrMsg string = "must consist of alphanumeric characters, '-', '_' or '.', and must start and end with an alphanumeric character"
+const qualifiedNameMaxLength int = 63
+
+var qualifiedNameRegexp = regexp.MustCompile("^" + qualifiedNameFmt + "$")
+
+// IsQualifiedName tests whether the value passed is what Kubernetes calls a
+// "qualified name". This is a format used in various places throughout the
+// system. If the value is not valid, a list of error strings is returned.
+// Otherwise an empty list (or nil) is returned.
+func IsQualifiedName(value string) []string {
+ var errs []string
+ parts := strings.Split(value, "/")
+ var name string
+ switch len(parts) {
+ case 1:
+ name = parts[0]
+ case 2:
+ var prefix string
+ prefix, name = parts[0], parts[1]
+ if len(prefix) == 0 {
+ errs = append(errs, "prefix part "+EmptyError())
+ } else if msgs := IsDNS1123Subdomain(prefix); len(msgs) != 0 {
+ errs = append(errs, prefixEach(msgs, "prefix part ")...)
+ }
+ default:
+ return append(errs, "a qualified name "+RegexError(qualifiedNameErrMsg, qualifiedNameFmt, "MyName", "my.name", "123-abc")+
+ " with an optional DNS subdomain prefix and '/' (e.g. 'example.com/MyName')")
+ }
+
+ if len(name) == 0 {
+ errs = append(errs, "name part "+EmptyError())
+ } else if len(name) > qualifiedNameMaxLength {
+ errs = append(errs, "name part "+MaxLenError(qualifiedNameMaxLength))
+ }
+ if !qualifiedNameRegexp.MatchString(name) {
+ errs = append(errs, "name part "+RegexError(qualifiedNameErrMsg, qualifiedNameFmt, "MyName", "my.name", "123-abc"))
+ }
+ return errs
+}
+
+// IsFullyQualifiedName checks if the name is fully qualified.
+func IsFullyQualifiedName(fldPath *field.Path, name string) field.ErrorList {
+ var allErrors field.ErrorList
+ if len(name) == 0 {
+ return append(allErrors, field.Required(fldPath, ""))
+ }
+ if errs := IsDNS1123Subdomain(name); len(errs) > 0 {
+ return append(allErrors, field.Invalid(fldPath, name, strings.Join(errs, ",")))
+ }
+ if len(strings.Split(name, ".")) < 3 {
+ return append(allErrors, field.Invalid(fldPath, name, "should be a domain with at least three segments separated by dots"))
+ }
+ return allErrors
+}
+
+const labelValueFmt string = "(" + qualifiedNameFmt + ")?"
+const labelValueErrMsg string = "a valid label must be an empty string or consist of alphanumeric characters, '-', '_' or '.', and must start and end with an alphanumeric character"
+const LabelValueMaxLength int = 63
+
+var labelValueRegexp = regexp.MustCompile("^" + labelValueFmt + "$")
+
+// IsValidLabelValue tests whether the value passed is a valid label value. If
+// the value is not valid, a list of error strings is returned. Otherwise an
+// empty list (or nil) is returned.
+func IsValidLabelValue(value string) []string {
+ var errs []string
+ if len(value) > LabelValueMaxLength {
+ errs = append(errs, MaxLenError(LabelValueMaxLength))
+ }
+ if !labelValueRegexp.MatchString(value) {
+ errs = append(errs, RegexError(labelValueErrMsg, labelValueFmt, "MyValue", "my_value", "12345"))
+ }
+ return errs
+}
+
+const dns1123LabelFmt string = "[a-z0-9]([-a-z0-9]*[a-z0-9])?"
+const dns1123LabelErrMsg string = "a DNS-1123 label must consist of lower case alphanumeric characters or '-', and must start and end with an alphanumeric character"
+const DNS1123LabelMaxLength int = 63
+
+var dns1123LabelRegexp = regexp.MustCompile("^" + dns1123LabelFmt + "$")
+
+// IsDNS1123Label tests for a string that conforms to the definition of a label in
+// DNS (RFC 1123).
+func IsDNS1123Label(value string) []string {
+ var errs []string
+ if len(value) > DNS1123LabelMaxLength {
+ errs = append(errs, MaxLenError(DNS1123LabelMaxLength))
+ }
+ if !dns1123LabelRegexp.MatchString(value) {
+ errs = append(errs, RegexError(dns1123LabelErrMsg, dns1123LabelFmt, "my-name", "123-abc"))
+ }
+ return errs
+}
+
+const dns1123SubdomainFmt string = dns1123LabelFmt + "(\\." + dns1123LabelFmt + ")*"
+const dns1123SubdomainErrorMsg string = "a DNS-1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character"
+const DNS1123SubdomainMaxLength int = 253
+
+var dns1123SubdomainRegexp = regexp.MustCompile("^" + dns1123SubdomainFmt + "$")
+
+// IsDNS1123Subdomain tests for a string that conforms to the definition of a
+// subdomain in DNS (RFC 1123).
+func IsDNS1123Subdomain(value string) []string {
+ var errs []string
+ if len(value) > DNS1123SubdomainMaxLength {
+ errs = append(errs, MaxLenError(DNS1123SubdomainMaxLength))
+ }
+ if !dns1123SubdomainRegexp.MatchString(value) {
+ errs = append(errs, RegexError(dns1123SubdomainErrorMsg, dns1123SubdomainFmt, "example.com"))
+ }
+ return errs
+}
+
+const dns1035LabelFmt string = "[a-z]([-a-z0-9]*[a-z0-9])?"
+const dns1035LabelErrMsg string = "a DNS-1035 label must consist of lower case alphanumeric characters or '-', start with an alphabetic character, and end with an alphanumeric character"
+const DNS1035LabelMaxLength int = 63
+
+var dns1035LabelRegexp = regexp.MustCompile("^" + dns1035LabelFmt + "$")
+
+// IsDNS1035Label tests for a string that conforms to the definition of a label in
+// DNS (RFC 1035).
+func IsDNS1035Label(value string) []string {
+ var errs []string
+ if len(value) > DNS1035LabelMaxLength {
+ errs = append(errs, MaxLenError(DNS1035LabelMaxLength))
+ }
+ if !dns1035LabelRegexp.MatchString(value) {
+ errs = append(errs, RegexError(dns1035LabelErrMsg, dns1035LabelFmt, "my-name", "abc-123"))
+ }
+ return errs
+}
+
+// wildcard definition - RFC 1034 section 4.3.3.
+// examples:
+// - valid: *.bar.com, *.foo.bar.com
+// - invalid: *.*.bar.com, *.foo.*.com, *bar.com, f*.bar.com, *
+const wildcardDNS1123SubdomainFmt = "\\*\\." + dns1123SubdomainFmt
+const wildcardDNS1123SubdomainErrMsg = "a wildcard DNS-1123 subdomain must start with '*.', followed by a valid DNS subdomain, which must consist of lower case alphanumeric characters, '-' or '.' and end with an alphanumeric character"
+
+// IsWildcardDNS1123Subdomain tests for a string that conforms to the definition of a
+// wildcard subdomain in DNS (RFC 1034 section 4.3.3).
+func IsWildcardDNS1123Subdomain(value string) []string {
+ wildcardDNS1123SubdomainRegexp := regexp.MustCompile("^" + wildcardDNS1123SubdomainFmt + "$")
+
+ var errs []string
+ if len(value) > DNS1123SubdomainMaxLength {
+ errs = append(errs, MaxLenError(DNS1123SubdomainMaxLength))
+ }
+ if !wildcardDNS1123SubdomainRegexp.MatchString(value) {
+ errs = append(errs, RegexError(wildcardDNS1123SubdomainErrMsg, wildcardDNS1123SubdomainFmt, "*.example.com"))
+ }
+ return errs
+}
+
+const cIdentifierFmt string = "[A-Za-z_][A-Za-z0-9_]*"
+const identifierErrMsg string = "a valid C identifier must start with alphabetic character or '_', followed by a string of alphanumeric characters or '_'"
+
+var cIdentifierRegexp = regexp.MustCompile("^" + cIdentifierFmt + "$")
+
+// IsCIdentifier tests for a string that conforms the definition of an identifier
+// in C. This checks the format, but not the length.
+func IsCIdentifier(value string) []string {
+ if !cIdentifierRegexp.MatchString(value) {
+ return []string{RegexError(identifierErrMsg, cIdentifierFmt, "my_name", "MY_NAME", "MyName")}
+ }
+ return nil
+}
+
+// IsValidPortNum tests that the argument is a valid, non-zero port number.
+func IsValidPortNum(port int) []string {
+ if 1 <= port && port <= 65535 {
+ return nil
+ }
+ return []string{InclusiveRangeError(1, 65535)}
+}
+
+// IsInRange tests that the argument is in an inclusive range.
+func IsInRange(value int, min int, max int) []string {
+ if value >= min && value <= max {
+ return nil
+ }
+ return []string{InclusiveRangeError(min, max)}
+}
+
+// Now in libcontainer UID/GID limits is 0 ~ 1<<31 - 1
+// TODO: once we have a type for UID/GID we should make these that type.
+const (
+ minUserID = 0
+ maxUserID = math.MaxInt32
+ minGroupID = 0
+ maxGroupID = math.MaxInt32
+)
+
+// IsValidGroupID tests that the argument is a valid Unix GID.
+func IsValidGroupID(gid int64) []string {
+ if minGroupID <= gid && gid <= maxGroupID {
+ return nil
+ }
+ return []string{InclusiveRangeError(minGroupID, maxGroupID)}
+}
+
+// IsValidUserID tests that the argument is a valid Unix UID.
+func IsValidUserID(uid int64) []string {
+ if minUserID <= uid && uid <= maxUserID {
+ return nil
+ }
+ return []string{InclusiveRangeError(minUserID, maxUserID)}
+}
+
+var portNameCharsetRegex = regexp.MustCompile("^[-a-z0-9]+$")
+var portNameOneLetterRegexp = regexp.MustCompile("[a-z]")
+
+// IsValidPortName check that the argument is valid syntax. It must be
+// non-empty and no more than 15 characters long. It may contain only [-a-z0-9]
+// and must contain at least one letter [a-z]. It must not start or end with a
+// hyphen, nor contain adjacent hyphens.
+//
+// Note: We only allow lower-case characters, even though RFC 6335 is case
+// insensitive.
+func IsValidPortName(port string) []string {
+ var errs []string
+ if len(port) > 15 {
+ errs = append(errs, MaxLenError(15))
+ }
+ if !portNameCharsetRegex.MatchString(port) {
+ errs = append(errs, "must contain only alpha-numeric characters (a-z, 0-9), and hyphens (-)")
+ }
+ if !portNameOneLetterRegexp.MatchString(port) {
+ errs = append(errs, "must contain at least one letter or number (a-z, 0-9)")
+ }
+ if strings.Contains(port, "--") {
+ errs = append(errs, "must not contain consecutive hyphens")
+ }
+ if len(port) > 0 && (port[0] == '-' || port[len(port)-1] == '-') {
+ errs = append(errs, "must not begin or end with a hyphen")
+ }
+ return errs
+}
+
+// IsValidIP tests that the argument is a valid IP address.
+func IsValidIP(value string) []string {
+ if net.ParseIP(value) == nil {
+ return []string{"must be a valid IP address, (e.g. 10.9.8.7)"}
+ }
+ return nil
+}
+
+const percentFmt string = "[0-9]+%"
+const percentErrMsg string = "a valid percent string must be a numeric string followed by an ending '%'"
+
+var percentRegexp = regexp.MustCompile("^" + percentFmt + "$")
+
+func IsValidPercent(percent string) []string {
+ if !percentRegexp.MatchString(percent) {
+ return []string{RegexError(percentErrMsg, percentFmt, "1%", "93%")}
+ }
+ return nil
+}
+
+const httpHeaderNameFmt string = "[-A-Za-z0-9]+"
+const httpHeaderNameErrMsg string = "a valid HTTP header must consist of alphanumeric characters or '-'"
+
+var httpHeaderNameRegexp = regexp.MustCompile("^" + httpHeaderNameFmt + "$")
+
+// IsHTTPHeaderName checks that a string conforms to the Go HTTP library's
+// definition of a valid header field name (a stricter subset than RFC7230).
+func IsHTTPHeaderName(value string) []string {
+ if !httpHeaderNameRegexp.MatchString(value) {
+ return []string{RegexError(httpHeaderNameErrMsg, httpHeaderNameFmt, "X-Header-Name")}
+ }
+ return nil
+}
+
+const envVarNameFmt = "[-._a-zA-Z][-._a-zA-Z0-9]*"
+const envVarNameFmtErrMsg string = "a valid environment variable name must consist of alphabetic characters, digits, '_', '-', or '.', and must not start with a digit"
+
+var envVarNameRegexp = regexp.MustCompile("^" + envVarNameFmt + "$")
+
+// IsEnvVarName tests if a string is a valid environment variable name.
+func IsEnvVarName(value string) []string {
+ var errs []string
+ if !envVarNameRegexp.MatchString(value) {
+ errs = append(errs, RegexError(envVarNameFmtErrMsg, envVarNameFmt, "my.env-name", "MY_ENV.NAME", "MyEnvName1"))
+ }
+
+ errs = append(errs, hasChDirPrefix(value)...)
+ return errs
+}
+
+const configMapKeyFmt = `[-._a-zA-Z0-9]+`
+const configMapKeyErrMsg string = "a valid config key must consist of alphanumeric characters, '-', '_' or '.'"
+
+var configMapKeyRegexp = regexp.MustCompile("^" + configMapKeyFmt + "$")
+
+// IsConfigMapKey tests for a string that is a valid key for a ConfigMap or Secret
+func IsConfigMapKey(value string) []string {
+ var errs []string
+ if len(value) > DNS1123SubdomainMaxLength {
+ errs = append(errs, MaxLenError(DNS1123SubdomainMaxLength))
+ }
+ if !configMapKeyRegexp.MatchString(value) {
+ errs = append(errs, RegexError(configMapKeyErrMsg, configMapKeyFmt, "key.name", "KEY_NAME", "key-name"))
+ }
+ errs = append(errs, hasChDirPrefix(value)...)
+ return errs
+}
+
+// MaxLenError returns a string explanation of a "string too long" validation
+// failure.
+func MaxLenError(length int) string {
+ return fmt.Sprintf("must be no more than %d characters", length)
+}
+
+// RegexError returns a string explanation of a regex validation failure.
+func RegexError(msg string, fmt string, examples ...string) string {
+ if len(examples) == 0 {
+ return msg + " (regex used for validation is '" + fmt + "')"
+ }
+ msg += " (e.g. "
+ for i := range examples {
+ if i > 0 {
+ msg += " or "
+ }
+ msg += "'" + examples[i] + "', "
+ }
+ msg += "regex used for validation is '" + fmt + "')"
+ return msg
+}
+
+// EmptyError returns a string explanation of a "must not be empty" validation
+// failure.
+func EmptyError() string {
+ return "must be non-empty"
+}
+
+func prefixEach(msgs []string, prefix string) []string {
+ for i := range msgs {
+ msgs[i] = prefix + msgs[i]
+ }
+ return msgs
+}
+
+// InclusiveRangeError returns a string explanation of a numeric "must be
+// between" validation failure.
+func InclusiveRangeError(lo, hi int) string {
+ return fmt.Sprintf(`must be between %d and %d, inclusive`, lo, hi)
+}
+
+func hasChDirPrefix(value string) []string {
+ var errs []string
+ switch {
+ case value == ".":
+ errs = append(errs, `must not be '.'`)
+ case value == "..":
+ errs = append(errs, `must not be '..'`)
+ case strings.HasPrefix(value, ".."):
+ errs = append(errs, `must not start with '..'`)
+ }
+ return errs
+}
+
+// IsSocketAddr checks that a string conforms is a valid socket address
+// as defined in RFC 789. (e.g 0.0.0.0:10254 or [::]:10254))
+func IsValidSocketAddr(value string) []string {
+ var errs []string
+ ip, port, err := net.SplitHostPort(value)
+ if err != nil {
+ return append(errs, "must be a valid socket address format, (e.g. 0.0.0.0:10254 or [::]:10254)")
+ return errs
+ }
+ portInt, _ := strconv.Atoi(port)
+ errs = append(errs, IsValidPortNum(portInt)...)
+ errs = append(errs, IsValidIP(ip)...)
+ return errs
+}