mirror of https://github.com/minio/minio.git
136 lines
3.8 KiB
Go
136 lines
3.8 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package madmin
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import (
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"encoding/json"
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"io"
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"io/ioutil"
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"net/http"
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"net/url"
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"time"
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)
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type statusType string
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type lockType string
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// OpsLockState - represents lock specific details.
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type OpsLockState struct {
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OperationID string `json:"id"` // String containing operation ID.
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LockSource string `json:"source"` // Operation type (GetObject, PutObject...)
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LockType lockType `json:"type"` // Lock type (RLock, WLock)
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Status statusType `json:"status"` // Status can be Running/Ready/Blocked.
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Since time.Time `json:"since"` // Time when the lock was initially held.
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}
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// VolumeLockInfo - represents summary and individual lock details of all
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// locks held on a given bucket, object.
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type VolumeLockInfo struct {
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Bucket string `json:"bucket"`
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Object string `json:"object"`
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// All locks blocked + running for given <volume,path> pair.
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LocksOnObject int64 `json:"-"`
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// Count of operations which has successfully acquired the lock
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// but hasn't unlocked yet( operation in progress).
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LocksAcquiredOnObject int64 `json:"-"`
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// Count of operations which are blocked waiting for the lock
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// to be released.
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TotalBlockedLocks int64 `json:"-"`
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// Count of all read locks
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TotalReadLocks int64 `json:"readLocks"`
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// Count of all write locks
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TotalWriteLocks int64 `json:"writeLocks"`
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// State information containing state of the locks for all operations
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// on given <volume,path> pair.
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LockDetailsOnObject []OpsLockState `json:"lockOwners"`
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}
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// getLockInfos - unmarshal []VolumeLockInfo from a reader.
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func getLockInfos(body io.Reader) ([]VolumeLockInfo, error) {
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respBytes, err := ioutil.ReadAll(body)
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if err != nil {
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return nil, err
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}
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var lockInfos []VolumeLockInfo
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err = json.Unmarshal(respBytes, &lockInfos)
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if err != nil {
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return nil, err
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}
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return lockInfos, nil
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}
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// ListLocks - Calls List Locks Management API to fetch locks matching
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// bucket, prefix and held before the duration supplied.
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func (adm *AdminClient) ListLocks(bucket, prefix string,
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duration time.Duration) ([]VolumeLockInfo, error) {
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queryVal := make(url.Values)
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queryVal.Set("bucket", bucket)
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queryVal.Set("prefix", prefix)
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queryVal.Set("older-than", duration.String())
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// Execute GET on /minio/admin/v1/locks to list locks.
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resp, err := adm.executeMethod("GET", requestData{
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queryValues: queryVal,
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relPath: "/v1/locks",
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})
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defer closeResponse(resp)
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if err != nil {
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return nil, err
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}
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if resp.StatusCode != http.StatusOK {
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return nil, httpRespToErrorResponse(resp)
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}
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return getLockInfos(resp.Body)
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}
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// ClearLocks - Calls Clear Locks Management API to clear locks held
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// on bucket, matching prefix older than duration supplied.
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func (adm *AdminClient) ClearLocks(bucket, prefix string,
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duration time.Duration) ([]VolumeLockInfo, error) {
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queryVal := make(url.Values)
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queryVal.Set("bucket", bucket)
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queryVal.Set("prefix", prefix)
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queryVal.Set("duration", duration.String())
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// Execute POST on /?lock to clear locks.
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resp, err := adm.executeMethod("DELETE", requestData{
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queryValues: queryVal,
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relPath: "/v1/locks",
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})
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defer closeResponse(resp)
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if err != nil {
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return nil, err
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}
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if resp.StatusCode != http.StatusOK {
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return nil, httpRespToErrorResponse(resp)
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}
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return getLockInfos(resp.Body)
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}
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