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//
// Copyright (c) 2015-2024 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
package madmin
import (
"context"
"encoding/json"
"net/http"
"net/url"
"time"
)
// PoolDecommissionInfo currently draining information
type PoolDecommissionInfo struct {
StartTime time.Time `json:"startTime"`
StartSize int64 `json:"startSize"`
TotalSize int64 `json:"totalSize"`
CurrentSize int64 `json:"currentSize"`
Complete bool `json:"complete"`
Failed bool `json:"failed"`
Canceled bool `json:"canceled"`
ObjectsDecommissioned int64 `json:"objectsDecommissioned"`
ObjectsDecommissionFailed int64 `json:"objectsDecommissionedFailed"`
BytesDone int64 `json:"bytesDecommissioned"`
BytesFailed int64 `json:"bytesDecommissionedFailed"`
}
// PoolStatus captures current pool status
type PoolStatus struct {
ID int `json:"id"`
CmdLine string `json:"cmdline"`
LastUpdate time.Time `json:"lastUpdate"`
Decommission *PoolDecommissionInfo `json:"decommissionInfo,omitempty"`
}
// DecommissionPool - starts moving data from specified pool to all other existing pools.
// Decommissioning if successfully started this function will return `nil`, to check
// for on-going draining cycle use StatusPool.
func (adm *AdminClient) DecommissionPool(ctx context.Context, pool string) error {
values := url.Values{}
values.Set("pool", pool)
resp, err := adm.executeMethod(ctx, http.MethodPost, requestData{
// POST <endpoint>/<admin-API>/pools/decommission?pool=http://server{1...4}/disk{1...4}
relPath: adminAPIPrefix + "/pools/decommission",
queryValues: values,
})
if err != nil {
return err
}
defer closeResponse(resp)
if resp.StatusCode != http.StatusOK {
return httpRespToErrorResponse(resp)
}
return nil
}
// CancelDecommissionPool - cancels an on-going decommissioning process,
// this automatically makes the pool available for writing once canceled.
func (adm *AdminClient) CancelDecommissionPool(ctx context.Context, pool string) error {
values := url.Values{}
values.Set("pool", pool)
resp, err := adm.executeMethod(ctx, http.MethodPost, requestData{
// POST <endpoint>/<admin-API>/pools/cancel?pool=http://server{1...4}/disk{1...4}
relPath: adminAPIPrefix + "/pools/cancel",
queryValues: values,
})
if err != nil {
return err
}
defer closeResponse(resp)
if resp.StatusCode != http.StatusOK {
return httpRespToErrorResponse(resp)
}
return nil
}
// StatusPool return current status about pool, reports any draining activity in progress
// and elapsed time.
func (adm *AdminClient) StatusPool(ctx context.Context, pool string) (PoolStatus, error) {
values := url.Values{}
values.Set("pool", pool)
resp, err := adm.executeMethod(ctx, http.MethodGet, requestData{
// GET <endpoint>/<admin-API>/pools/status?pool=http://server{1...4}/disk{1...4}
relPath: adminAPIPrefix + "/pools/status",
queryValues: values,
})
if err != nil {
return PoolStatus{}, err
}
defer closeResponse(resp)
if resp.StatusCode != http.StatusOK {
return PoolStatus{}, httpRespToErrorResponse(resp)
}
var info PoolStatus
if err = json.NewDecoder(resp.Body).Decode(&info); err != nil {
return PoolStatus{}, err
}
return info, nil
}
// ListPoolsStatus returns list of pools currently configured and being used
// on the cluster.
func (adm *AdminClient) ListPoolsStatus(ctx context.Context) ([]PoolStatus, error) {
resp, err := adm.executeMethod(ctx, http.MethodGet, requestData{
relPath: adminAPIPrefix + "/pools/list", // GET <endpoint>/<admin-API>/pools/list
})
if err != nil {
return nil, err
}
defer closeResponse(resp)
if resp.StatusCode != http.StatusOK {
return nil, httpRespToErrorResponse(resp)
}
var pools []PoolStatus
if err = json.NewDecoder(resp.Body).Decode(&pools); err != nil {
return nil, err
}
return pools, nil
}
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