printers

package
v1.6.1 Latest Latest
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 Go to latest Published: Apr 3, 2017 License: Apache-2.0 Imports: 21 Imported by: 0

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Index

Constants

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Variables

This section is empty.

Functions

func GetNewTabWriter 

func GetNewTabWriter(output io.Writer) *tabwriter.Writer

GetNewTabWriter returns a tabwriter that translates tabbed columns in input into properly aligned text.

func RelaxedJSONPathExpression 

func RelaxedJSONPathExpression(pathExpression string) (string, error)

RelaxedJSONPathExpression attempts to be flexible with JSONPath expressions, it accepts:

  • metadata.name (no leading '.' or curly brances '{...}'
  • {metadata.name} (no leading '.')
  • .metadata.name (no curly braces '{...}')
  • {.metadata.name} (complete expression)

And transforms them all into a valid jsonpath expression: 

{.metadata.name}

func ShortHumanDuration 

func ShortHumanDuration(d time.Duration) string

Types

type Column 

type Column struct {
	// The header to print above the column, general style is ALL_CAPS
	Header string
	// The pointer to the field in the object to print in JSONPath form
	// e.g. {.ObjectMeta.Name}, see pkg/util/jsonpath for more details.
	FieldSpec string
}

Column represents a user specified column

type CustomColumnsPrinter 

type CustomColumnsPrinter struct {
	Columns   []Column
	Decoder   runtime.Decoder
	NoHeaders bool
}

CustomColumnPrinter is a printer that knows how to print arbitrary columns of data from templates specified in the `Columns` array

func NewCustomColumnsPrinterFromSpec 

func NewCustomColumnsPrinterFromSpec(spec string, decoder runtime.Decoder, noHeaders bool) (*CustomColumnsPrinter, error)

NewCustomColumnsPrinterFromSpec creates a custom columns printer from a comma separated list of <header>:<jsonpath-field-spec> pairs. e.g. NAME:metadata.name,API_VERSION:apiVersion creates a printer that prints: 

NAME               API_VERSION
foo                bar

func NewCustomColumnsPrinterFromTemplate 

func NewCustomColumnsPrinterFromTemplate(templateReader io.Reader, decoder runtime.Decoder) (*CustomColumnsPrinter, error)

NewCustomColumnsPrinterFromTemplate creates a custom columns printer from a template stream. The template is expected to consist of two lines, whitespace separated. The first line is the header line, the second line is the jsonpath field spec For example, the template below: NAME API_VERSION {metadata.name} {apiVersion}

func (*CustomColumnsPrinter) AfterPrint 

func (s *CustomColumnsPrinter) AfterPrint(w io.Writer, res string) error

func (*CustomColumnsPrinter) HandledResources 

func (s *CustomColumnsPrinter) HandledResources() []string

func (*CustomColumnsPrinter) PrintObj 

func (s *CustomColumnsPrinter) PrintObj(obj runtime.Object, out io.Writer) error

type Describer 

type Describer interface {
	Describe(namespace, name string, describerSettings DescriberSettings) (output string, err error)
}

Describer generates output for the named resource or an error if the output could not be generated. Implementers typically abstract the retrieval of the named object from a remote server.

type DescriberSettings 

type DescriberSettings struct {
	ShowEvents bool
}

DescriberSettings holds display configuration for each object describer to control what is printed.

type ErrNoDescriber 

type ErrNoDescriber struct {
	Types []string
}

ErrNoDescriber is a structured error indicating the provided object or objects cannot be described.

func (ErrNoDescriber) Error 

func (e ErrNoDescriber) Error() string

Error implements the error interface.

type HumanReadablePrinter 

type HumanReadablePrinter struct {
	// contains filtered or unexported fields
}

HumanReadablePrinter is an implementation of ResourcePrinter which attempts to provide more elegant output. It is not threadsafe, but you may call PrintObj repeatedly; headers will only be printed if the object type changes. This makes it useful for printing items received from watches.

func NewHumanReadablePrinter 

func NewHumanReadablePrinter(encoder runtime.Encoder, decoder runtime.Decoder, options PrintOptions) *HumanReadablePrinter

NewHumanReadablePrinter creates a HumanReadablePrinter. If encoder and decoder are provided, an attempt to convert unstructured types to internal types is made.

func (*HumanReadablePrinter) AfterPrint 

func (h *HumanReadablePrinter) AfterPrint(output io.Writer, res string) error

func (*HumanReadablePrinter) EnsurePrintHeaders 

func (h *HumanReadablePrinter) EnsurePrintHeaders()

EnsurePrintHeaders sets the HumanReadablePrinter option "NoHeaders" to false and removes the .lastType that was printed, which forces headers to be printed in cases where multiple lists of the same resource are printed consecutively, but are separated by non-printer related information.

func (*HumanReadablePrinter) EnsurePrintWithKind 

func (h *HumanReadablePrinter) EnsurePrintWithKind(kind string)

EnsurePrintWithKind sets HumanReadablePrinter options "WithKind" to true and "Kind" to the string arg it receives, pre-pending this string to the "NAME" column in an output of resources.

func (*HumanReadablePrinter) GetResourceKind 

func (h *HumanReadablePrinter) GetResourceKind() string

GetResourceKind returns the type currently set for a resource

func (*HumanReadablePrinter) HandledResources 

func (h *HumanReadablePrinter) HandledResources() []string

func (*HumanReadablePrinter) Handler 

func (h *HumanReadablePrinter) Handler(columns, columnsWithWide []string, printFunc interface{}) error

Handler adds a print handler with a given set of columns to HumanReadablePrinter instance. See validatePrintHandlerFunc for required method signature.

func (*HumanReadablePrinter) PrintObj 

func (h *HumanReadablePrinter) PrintObj(obj runtime.Object, output io.Writer) error

PrintObj prints the obj in a human-friendly format according to the type of the obj.

type JSONPathPrinter 

type JSONPathPrinter struct {
	*jsonpath.JSONPath
	// contains filtered or unexported fields
}

JSONPathPrinter is an implementation of ResourcePrinter which formats data with jsonpath expression.

func NewJSONPathPrinter 

func NewJSONPathPrinter(tmpl string) (*JSONPathPrinter, error)

func (*JSONPathPrinter) AfterPrint 

func (j *JSONPathPrinter) AfterPrint(w io.Writer, res string) error

func (*JSONPathPrinter) HandledResources 

func (p *JSONPathPrinter) HandledResources() []string

TODO: implement HandledResources()

func (*JSONPathPrinter) PrintObj 

func (j *JSONPathPrinter) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj formats the obj with the JSONPath Template.

type JSONPrinter 

type JSONPrinter struct {
}

JSONPrinter is an implementation of ResourcePrinter which outputs an object as JSON.

func (*JSONPrinter) AfterPrint 

func (p *JSONPrinter) AfterPrint(w io.Writer, res string) error

func (*JSONPrinter) HandledResources 

func (p *JSONPrinter) HandledResources() []string

TODO: implement HandledResources()

func (*JSONPrinter) PrintObj 

func (p *JSONPrinter) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj is an implementation of ResourcePrinter.PrintObj which simply writes the object to the Writer.

type NamePrinter 

type NamePrinter struct {
	Decoders []runtime.Decoder
	Typer    runtime.ObjectTyper
	Mapper   meta.RESTMapper
}

NamePrinter is an implementation of ResourcePrinter which outputs "resource/name" pair of an object.

func (*NamePrinter) AfterPrint 

func (p *NamePrinter) AfterPrint(w io.Writer, res string) error

func (*NamePrinter) HandledResources 

func (p *NamePrinter) HandledResources() []string

TODO: implement HandledResources()

func (*NamePrinter) PrintObj 

func (p *NamePrinter) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj is an implementation of ResourcePrinter.PrintObj which decodes the object and print "resource/name" pair. If the object is a List, print all items in it.

type ObjectDescriber 

type ObjectDescriber interface {
	DescribeObject(object interface{}, extra ...interface{}) (output string, err error)
}

ObjectDescriber is an interface for displaying arbitrary objects with extra information. Use when an object is in hand (on disk, or already retrieved). Implementers may ignore the additional information passed on extra, or use it by default. ObjectDescribers may return ErrNoDescriber if no suitable describer is found.

type PrintOptions 

type PrintOptions struct {
	NoHeaders          bool
	WithNamespace      bool
	WithKind           bool
	Wide               bool
	ShowAll            bool
	ShowLabels         bool
	AbsoluteTimestamps bool
	Kind               string
	ColumnLabels       []string
}

type ResourcePrinter 

type ResourcePrinter interface {
	// Print receives a runtime object, formats it and prints it to a writer.
	PrintObj(runtime.Object, io.Writer) error
	HandledResources() []string
	//Can be used to print out warning/clarifications if needed
	//after all objects were printed
	AfterPrint(io.Writer, string) error
}

ResourcePrinter is an interface that knows how to print runtime objects.

func GetStandardPrinter 

func GetStandardPrinter(format, formatArgument string, noHeaders, allowMissingTemplateKeys bool, mapper meta.RESTMapper, typer runtime.ObjectTyper, decoders []runtime.Decoder) (ResourcePrinter, bool, error)

GetStandardPrinter takes a format type, an optional format argument. It will return true if the format is generic (untyped), otherwise it will return false. The printer is agnostic to schema versions, so you must send arguments to PrintObj in the version you wish them to be shown using a VersionedPrinter (typically when generic is true).

func NewVersionedPrinter 

func NewVersionedPrinter(printer ResourcePrinter, converter runtime.ObjectConvertor, versions ...schema.GroupVersion) ResourcePrinter

NewVersionedPrinter wraps a printer to convert objects to a known API version prior to printing.

type ResourcePrinterFunc 

type ResourcePrinterFunc func(runtime.Object, io.Writer) error

ResourcePrinterFunc is a function that can print objects

func (ResourcePrinterFunc) AfterPrint 

func (fn ResourcePrinterFunc) AfterPrint(io.Writer, string) error

func (ResourcePrinterFunc) HandledResources 

func (fn ResourcePrinterFunc) HandledResources() []string

TODO: implement HandledResources()

func (ResourcePrinterFunc) PrintObj 

func (fn ResourcePrinterFunc) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj implements ResourcePrinter

type TemplatePrinter 

type TemplatePrinter struct {
	// contains filtered or unexported fields
}

TemplatePrinter is an implementation of ResourcePrinter which formats data with a Go Template.

func NewTemplatePrinter 

func NewTemplatePrinter(tmpl []byte) (*TemplatePrinter, error)

func (*TemplatePrinter) AfterPrint 

func (p *TemplatePrinter) AfterPrint(w io.Writer, res string) error

func (*TemplatePrinter) AllowMissingKeys 

func (p *TemplatePrinter) AllowMissingKeys(allow bool)

AllowMissingKeys tells the template engine if missing keys are allowed.

func (*TemplatePrinter) HandledResources 

func (p *TemplatePrinter) HandledResources() []string

TODO: implement HandledResources()

func (*TemplatePrinter) PrintObj 

func (p *TemplatePrinter) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj formats the obj with the Go Template.

type VersionedPrinter 

type VersionedPrinter struct {
	// contains filtered or unexported fields
}

VersionedPrinter takes runtime objects and ensures they are converted to a given API version prior to being passed to a nested printer.

func (*VersionedPrinter) AfterPrint 

func (p *VersionedPrinter) AfterPrint(w io.Writer, res string) error

func (*VersionedPrinter) HandledResources 

func (p *VersionedPrinter) HandledResources() []string

TODO: implement HandledResources()

func (*VersionedPrinter) PrintObj 

func (p *VersionedPrinter) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj implements ResourcePrinter

type YAMLPrinter 

type YAMLPrinter struct {
	// contains filtered or unexported fields
}

YAMLPrinter is an implementation of ResourcePrinter which outputs an object as YAML. The input object is assumed to be in the internal version of an API and is converted to the given version first.

func (*YAMLPrinter) AfterPrint 

func (p *YAMLPrinter) AfterPrint(w io.Writer, res string) error

func (*YAMLPrinter) HandledResources 

func (p *YAMLPrinter) HandledResources() []string

TODO: implement HandledResources()

func (*YAMLPrinter) PrintObj 

func (p *YAMLPrinter) PrintObj(obj runtime.Object, w io.Writer) error

PrintObj prints the data as YAML.

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