go-ceph/cephfs/admin/flags.go

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// +build !luminous,!mimic
package admin
// For APIs that accept extra sets of "boolean" flags we may end up wanting
// multiple different sets of supported flags. Example: most rm functions
// accept a force flag, but only subvolume delete has retain snapshots.
// To make this somewhat uniform in the admin package we define a utility
// interface and helper function to merge flags with naming options.
type flagSet interface {
flags() map[string]bool
}
type commonRmFlags struct {
force bool
}
func (f commonRmFlags) flags() map[string]bool {
o := make(map[string]bool)
if f.force {
o["force"] = true
}
return o
}
// SubVolRmFlags does not embed other types to simplify and keep the
// interface with the type flat and simple. At the cost of some code
// duplication we get a nicer UX for those using the library.
// SubVolRmFlags may be used to specify behavior modifying flags when
// removing sub volumes.
type SubVolRmFlags struct {
Force bool
RetainSnapshots bool
}
func (f SubVolRmFlags) flags() map[string]bool {
o := make(map[string]bool)
if f.Force {
o["force"] = true
}
if f.RetainSnapshots {
o["retain_snapshots"] = true
}
return o
}
// mergeFlags combines a set of key-value settings with any type implementing
// the flagSet interface.
func mergeFlags(m map[string]string, f flagSet) map[string]interface{} {
o := make(map[string]interface{})
for k, v := range m {
o[k] = v
}
for k, v := range f.flags() {
o[k] = v
}
return o
}