mirror of https://github.com/ceph/go-ceph
134 lines
4.5 KiB
Go
134 lines
4.5 KiB
Go
package admin
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import "fmt"
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// fixedPointFloat is a custom type that implements the MarshalJSON interface.
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// This is used to format float64 values to two decimal places.
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// By default these get converted to integers in the JSON output and
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// fail the command.
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type fixedPointFloat float64
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// MarshalJSON provides a custom implementation for the JSON marshalling
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// of fixedPointFloat. It formats the float to two decimal places.
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func (fpf fixedPointFloat) MarshalJSON() ([]byte, error) {
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return []byte(fmt.Sprintf("%.2f", float64(fpf))), nil
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}
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// fSQuiesceFields is the internal type used to create JSON for ceph.
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// See FSQuiesceOptions for the type that users of the library
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// interact with.
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type fSQuiesceFields struct {
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Prefix string `json:"prefix"`
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VolName string `json:"vol_name"`
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GroupName string `json:"group_name,omitempty"`
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Members []string `json:"members,omitempty"`
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SetId string `json:"set_id,omitempty"`
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Timeout fixedPointFloat `json:"timeout,omitempty"`
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Expiration fixedPointFloat `json:"expiration,omitempty"`
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AwaitFor fixedPointFloat `json:"await_for,omitempty"`
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Await bool `json:"await,omitempty"`
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IfVersion int `json:"if_version,omitempty"`
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Include bool `json:"include,omitempty"`
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Exclude bool `json:"exclude,omitempty"`
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Reset bool `json:"reset,omitempty"`
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Release bool `json:"release,omitempty"`
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Query bool `json:"query,omitempty"`
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All bool `json:"all,omitempty"`
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Cancel bool `json:"cancel,omitempty"`
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}
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// FSQuiesceOptions are used to specify optional, non-identifying, values
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// to be used when quiescing a cephfs volume.
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type FSQuiesceOptions struct {
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Timeout float64
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Expiration float64
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AwaitFor float64
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Await bool
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IfVersion int
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Include bool
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Exclude bool
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Reset bool
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Release bool
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Query bool
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All bool
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Cancel bool
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}
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// toFields is used to convert the FSQuiesceOptions to the internal
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// fSQuiesceFields type.
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func (o *FSQuiesceOptions) toFields(volume, group string, subvolumes []string, setId string) *fSQuiesceFields {
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return &fSQuiesceFields{
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Prefix: "fs quiesce",
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VolName: volume,
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GroupName: group,
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Members: subvolumes,
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SetId: setId,
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Timeout: fixedPointFloat(o.Timeout),
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Expiration: fixedPointFloat(o.Expiration),
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AwaitFor: fixedPointFloat(o.AwaitFor),
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Await: o.Await,
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IfVersion: o.IfVersion,
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Include: o.Include,
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Exclude: o.Exclude,
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Reset: o.Reset,
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Release: o.Release,
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Query: o.Query,
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All: o.All,
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Cancel: o.Cancel,
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}
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}
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// QuiesceState is used to report the state of a quiesced fs volume.
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type QuiesceState struct {
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Name string `json:"name"`
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Age float64 `json:"age"`
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}
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// QuiesceInfoMember is used to report the state of a quiesced fs volume.
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// This is part of sets members object array in the json.
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type QuiesceInfoMember struct {
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Excluded bool `json:"excluded"`
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State QuiesceState `json:"state"`
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}
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// QuiesceInfo reports various informational values about a quiesced volume.
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// This is returned as sets object array in the json.
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type QuiesceInfo struct {
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Version int `json:"version"`
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AgeRef float64 `json:"age_ref"`
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State QuiesceState `json:"state"`
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Timeout float64 `json:"timeout"`
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Expiration float64 `json:"expiration"`
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Members map[string]QuiesceInfoMember `json:"members"`
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}
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// FSQuiesceInfo reports various informational values about quiesced volumes.
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type FSQuiesceInfo struct {
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Epoch int `json:"epoch"`
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SetVersion int `json:"set_version"`
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Sets map[string]QuiesceInfo `json:"sets"`
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}
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// parseFSQuiesceInfo is used to parse the response from the quiesce command. It returns a FSQuiesceInfo object.
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func parseFSQuiesceInfo(res response) (*FSQuiesceInfo, error) {
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var info FSQuiesceInfo
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if err := res.NoStatus().Unmarshal(&info).End(); err != nil {
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return nil, err
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}
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return &info, nil
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}
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// FSQuiesce will quiesce the specified subvolumes in a volume.
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// Quiescing a fs will prevent new writes to the subvolumes.
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// Similar To:
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//
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// ceph fs quiesce <volume>
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func (fsa *FSAdmin) FSQuiesce(volume, group string, subvolumes []string, setId string, o *FSQuiesceOptions) (*FSQuiesceInfo, error) {
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if o == nil {
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o = &FSQuiesceOptions{}
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}
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f := o.toFields(volume, group, subvolumes, setId)
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return parseFSQuiesceInfo(fsa.marshalMgrCommand(f))
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}
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