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Add forceStop flag to provide facility to stop healing (#6718)

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This PR also makes sure that we deal with HTTP request
count by ignoring the on-going heal operation, i.e
do not wait on itself.
This commit is contained in:
Harshavardhana
2018-11-04 19:24:16 -08:00
committed by kannappanr
parent bef0318c36
commit a9cda850ca
5 changed files with 157 additions and 44 deletions
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5
pkg/madmin/API.md
View File

@@ -208,7 +208,7 @@ Fetches information for all cluster nodes, such as server properties, storage in
## 6. Heal operations
<a name="Heal"></a>
### Heal(bucket, prefix string, healOpts HealOpts, clientToken string, forceStart bool) (start HealStartSuccess, status HealTaskStatus, err error)
### Heal(bucket, prefix string, healOpts HealOpts, clientToken string, forceStart bool, forceStop bool) (start HealStartSuccess, status HealTaskStatus, err error)
Start a heal sequence that scans data under given (possible empty)
`bucket` and `prefix`. The `recursive` bool turns on recursive
@@ -232,7 +232,8 @@ __Example__
DryRun: false,
}
forceStart := false
healPath, err := madmClnt.Heal("", "", opts, "", forceStart)
forceStop := false
healPath, err := madmClnt.Heal("", "", opts, "", forceStart, forceStop)
if err != nil {
log.Fatalln(err)
}

34
pkg/madmin/heal-commands.go
View File

@@ -40,6 +40,10 @@ type HealStartSuccess struct {
StartTime time.Time `json:"startTime"`
}
// HealStopSuccess - holds information about a successfully stopped
// heal operation.
type HealStopSuccess HealStartSuccess
// HealTaskStatus - status struct for a heal task
type HealTaskStatus struct {
Summary string `json:"summary"`
@@ -176,10 +180,17 @@ func (hri *HealResultItem) GetOnlineCounts() (b, a int) {
}
// Heal - API endpoint to start heal and to fetch status
// forceStart and forceStop are mutually exclusive, you can either
// set one of them to 'true'. If both are set 'forceStart' will be
// honored.
func (adm *AdminClient) Heal(bucket, prefix string, healOpts HealOpts,
clientToken string, forceStart bool) (
clientToken string, forceStart, forceStop bool) (
healStart HealStartSuccess, healTaskStatus HealTaskStatus, err error) {
if forceStart && forceStop {
return healStart, healTaskStatus, ErrInvalidArgument("forceStart and forceStop set to true is not allowed")
}
body, err := json.Marshal(healOpts)
if err != nil {
return healStart, healTaskStatus, err
@@ -196,8 +207,12 @@ func (adm *AdminClient) Heal(bucket, prefix string, healOpts HealOpts,
queryVals.Set("clientToken", clientToken)
body = []byte{}
}
// Anyone can be set, either force start or forceStop.
if forceStart {
queryVals.Set("forceStart", "true")
} else if forceStop {
queryVals.Set("forceStop", "true")
}
resp, err := adm.executeMethod("POST", requestData{
@@ -221,9 +236,24 @@ func (adm *AdminClient) Heal(bucket, prefix string, healOpts HealOpts,
// Was it a status request?
if clientToken == "" {
// As a special operation forceStop would return a
// similar struct as healStart will have the
// heal sequence information about the heal which
// was stopped.
err = json.Unmarshal(respBytes, &healStart)
} else {
err = json.Unmarshal(respBytes, &healTaskStatus)
}
return healStart, healTaskStatus, err
if err != nil {
// May be the server responded with error after success
// message, handle it separately here.
var errResp ErrorResponse
err = json.Unmarshal(respBytes, &errResp)
if err != nil {
// Unknown structure return error anyways.
return healStart, healTaskStatus, err
}
return healStart, healTaskStatus, errResp
}
return healStart, healTaskStatus, nil
}