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minio/pkg/madmin/top-commands.go
Harshavardhana 2642e12d14
fix: change policies API to return and take struct ()
This allows for order guarantees in returned values
can be consumed safely by the caller to avoid any
additional parsing and validation.

Fixes 
2020-04-07 19:30:59 -07:00

82 lines
2.4 KiB
Go

/*
* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package madmin
import (
"context"
"encoding/json"
"io/ioutil"
"net/http"
"time"
)
// LockEntry holds information about client requesting the lock,
// servers holding the lock, source on the client machine,
// ID, type(read or write) and time stamp.
type LockEntry struct {
Timestamp time.Time `json:"time"` // Timestamp set at the time of initialization.
Resource string `json:"resource"` // Resource contains info like bucket, object etc
Type string `json:"type"` // Bool whether write or read lock.
Source string `json:"source"` // Source which created the lock
ServerList []string `json:"serverlist"` // RPC path of servers issuing the lock.
Owner string `json:"owner"` // RPC path of client claiming lock.
ID string `json:"id"` // UID to uniquely identify request of client.
}
// LockEntries - To sort the locks
type LockEntries []LockEntry
func (l LockEntries) Len() int {
return len(l)
}
func (l LockEntries) Less(i, j int) bool {
return l[i].Timestamp.Before(l[j].Timestamp)
}
func (l LockEntries) Swap(i, j int) {
l[i], l[j] = l[j], l[i]
}
// TopLocks - returns the oldest locks in a minio setup.
func (adm *AdminClient) TopLocks(ctx context.Context) (LockEntries, error) {
// Execute GET on /minio/admin/v3/top/locks
// to get the oldest locks in a minio setup.
resp, err := adm.executeMethod(ctx,
http.MethodGet,
requestData{relPath: adminAPIPrefix + "/top/locks"},
)
defer closeResponse(resp)
if err != nil {
return nil, err
}
if resp.StatusCode != http.StatusOK {
return nil, httpRespToErrorResponse(resp)
}
response, err := ioutil.ReadAll(resp.Body)
if err != nil {
return LockEntries{}, err
}
var lockEntries LockEntries
err = json.Unmarshal(response, &lockEntries)
return lockEntries, err
}