k9s/internal/resource/context.go

98 lines
2.1 KiB
Go

package resource
import (
"github.com/derailed/k9s/internal/k8s"
log "github.com/sirupsen/logrus"
)
// SwitchableRes represents a resource that can be switched.
type SwitchableRes interface {
k8s.ContextRes
}
// Context tracks a kubernetes resource.
type Context struct {
*Base
instance *k8s.NamedContext
}
// NewContextList returns a new resource list.
func NewContextList(ns string) List {
return NewContextListWithArgs(ns, NewContext())
}
// NewContextListWithArgs returns a new resource list.
func NewContextListWithArgs(ns string, res Resource) List {
return newList(NotNamespaced, "ctx", res, SwitchAccess|DeleteAccess)
}
// NewContext instantiates a new Context.
func NewContext() *Context {
return NewContextWithArgs(k8s.NewContext().(SwitchableRes))
}
// NewContextWithArgs instantiates a new Context.
func NewContextWithArgs(r SwitchableRes) *Context {
ctx := &Context{
Base: &Base{
caller: r,
},
}
ctx.creator = ctx
return ctx
}
// NewInstance builds a new Context instance from a k8s resource.
func (r *Context) NewInstance(i interface{}) Columnar {
c := NewContext()
switch i.(type) {
case *k8s.NamedContext:
c.instance = i.(*k8s.NamedContext)
case k8s.NamedContext:
ii := i.(k8s.NamedContext)
c.instance = &ii
default:
log.Fatalf("unknown context type %#v", i)
}
c.path = c.instance.Name
return c
}
// Switch out current context.
func (r *Context) Switch(c string) error {
return r.caller.(k8s.ContextRes).Switch(c)
}
// Marshal the resource to yaml.
func (r *Context) Marshal(path string) (string, error) {
return "", nil
}
// Header return resource header.
func (*Context) Header(string) Row {
return append(Row{}, "NAME", "CLUSTER", "AUTHINFO", "NAMESPACE")
}
// Fields retrieves displayable fields.
func (r *Context) Fields(ns string) Row {
ff := make(Row, 0, len(r.Header(ns)))
i := r.instance
name := i.Name
if i.MustCurrentClusterName() == name {
name += "*"
}
return append(ff,
name,
i.Context.Cluster,
i.Context.AuthInfo,
i.Context.Namespace,
)
}
// ExtFields returns extended fields in relation to headers.
func (*Context) ExtFields() Properties {
return Properties{}
}