Documentation
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Overview ¶
Package util implements various utility functions used in both testing and implementation of Kubernetes. Package util may not depend on any other package in the Kubernetes package tree.
Index ¶
- func AllPtrFieldsNil(obj interface{}) bool
- func CompileRegexps(regexpStrings []string) ([]*regexp.Regexp, error)
- func ExecuteTemplate(w io.Writer, templateText string, data interface{}) error
- func ExecuteTemplateToString(templateText string, data interface{}) (string, error)
- func FileExists(filename string) (bool, error)
- func Int32Ptr(i int32) *int32
- func Int32PtrDerefOr(ptr *int32, def int32) int32
- func IntPtr(i int) *int
- func IntPtrDerefOr(ptr *int, def int) int
- func ReadDirNoExit(dirname string) ([]os.FileInfo, []error, error)
- func Umask(mask int) (old int, err error)
- func UsingSystemdInitSystem() bool
- type StringFlag
- type Trace
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func AllPtrFieldsNil ¶
func AllPtrFieldsNil(obj interface{}) bool
Tests whether all pointer fields in a struct are nil. This is useful when, for example, an API struct is handled by plugins which need to distinguish "no plugin accepted this spec" from "this spec is empty".
This function is only valid for structs and pointers to structs. Any other type will cause a panic. Passing a typed nil pointer will return true.
func CompileRegexps ¶
Takes a list of strings and compiles them into a list of regular expressions
func ExecuteTemplate ¶
ExecuteTemplate executes templateText with data and output written to w.
func ExecuteTemplateToString ¶
func FileExists ¶
func Int32PtrDerefOr ¶
Int32PtrDerefOr dereference the int32 ptr and returns it i not nil, else returns def.
func IntPtrDerefOr ¶
IntPtrDerefOr dereference the int ptr and returns it i not nil, else returns def.
func ReadDirNoExit ¶
borrowed from ioutil.ReadDir ReadDir reads the directory named by dirname and returns a list of directory entries, minus those with lstat errors
func UsingSystemdInitSystem ¶
func UsingSystemdInitSystem() bool
Detects if using systemd as the init system Please note that simply reading /proc/1/cmdline can be misleading because some installation of various init programs can automatically make /sbin/init a symlink or even a renamed version of their main program. TODO(dchen1107): realiably detects the init system using on the system: systemd, upstart, initd, etc.
Types ¶
type StringFlag ¶
type StringFlag struct {
// contains filtered or unexported fields
}
StringFlag is a string flag compatible with flags and pflags that keeps track of whether it had a value supplied or not.
func NewStringFlag ¶
func NewStringFlag(defaultVal string) StringFlag
func (*StringFlag) Default ¶
func (f *StringFlag) Default(value string)
func (StringFlag) Provided ¶
func (f StringFlag) Provided() bool
func (*StringFlag) Set ¶
func (f *StringFlag) Set(value string) error
func (StringFlag) String ¶
func (f StringFlag) String() string
func (*StringFlag) Type ¶
func (f *StringFlag) Type() string
func (StringFlag) Value ¶
func (f StringFlag) Value() string
Source Files
Directories
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| Path | Synopsis |
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Package config provides utility objects for decoupling sources of configuration and the actual configuration state.
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Package config provides utility objects for decoupling sources of configuration and the actual configuration state. |
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Package errors implements various utility functions and types around errors.
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Package errors implements various utility functions and types around errors. |
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Package framer implements simple frame decoding techniques for an io.ReadCloser
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Package framer implements simple frame decoding techniques for an io.ReadCloser |
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Package httpstream adds multiplexed streaming support to HTTP requests and responses via connection upgrades.
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Package httpstream adds multiplexed streaming support to HTTP requests and responses via connection upgrades. |
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Package intstr is a generated protocol buffer package.
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Package intstr is a generated protocol buffer package. |
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Package labels provides utilities to work with Kubernetes labels.
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Package labels provides utilities to work with Kubernetes labels. |
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Package rand provides utilities related to randomization.
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Package rand provides utilities related to randomization. |
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Package sets has auto-generated set types.
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Package sets has auto-generated set types. |
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Package wait provides tools for polling or listening for changes to a condition.
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Package wait provides tools for polling or listening for changes to a condition. |