mirror of
https://github.com/minio/minio.git
synced 2024-12-25 22:55:54 -05:00
95bf4a57b6
Create new code paths for multiple subsystems in the code. This will make maintaing this easier later. Also introduce bugLogIf() for errors that should not happen in the first place.
393 lines
11 KiB
Go
393 lines
11 KiB
Go
// Copyright (c) 2015-2024 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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"strconv"
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"strings"
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"github.com/minio/mux"
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"github.com/minio/pkg/v2/env"
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"github.com/minio/pkg/v2/policy"
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)
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var (
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errRebalanceDecommissionAlreadyRunning = errors.New("Rebalance cannot be started, decommission is already in progress")
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errDecommissionRebalanceAlreadyRunning = errors.New("Decommission cannot be started, rebalance is already in progress")
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)
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func (a adminAPIHandlers) StartDecommission(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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objectAPI, _ := validateAdminReq(ctx, w, r, policy.DecommissionAdminAction)
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if objectAPI == nil {
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return
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}
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// Legacy args style such as non-ellipses style is not supported with this API.
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if globalEndpoints.Legacy() {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
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return
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}
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z, ok := objectAPI.(*erasureServerPools)
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if !ok || len(z.serverPools) == 1 {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
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return
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}
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if z.IsDecommissionRunning() {
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writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errDecommissionAlreadyRunning), r.URL)
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return
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}
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if z.IsRebalanceStarted() {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminRebalanceAlreadyStarted), r.URL)
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return
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}
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vars := mux.Vars(r)
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v := vars["pool"]
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byID := vars["by-id"] == "true"
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pools := strings.Split(v, ",")
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poolIndices := make([]int, 0, len(pools))
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for _, pool := range pools {
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var idx int
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if byID {
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var err error
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idx, err = strconv.Atoi(pool)
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if err != nil {
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// We didn't find any matching pools, invalid input
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writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errInvalidArgument), r.URL)
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return
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}
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} else {
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idx = globalEndpoints.GetPoolIdx(pool)
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if idx == -1 {
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// We didn't find any matching pools, invalid input
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writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errInvalidArgument), r.URL)
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return
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}
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}
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var pool *erasureSets
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for pidx := range z.serverPools {
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if pidx == idx {
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pool = z.serverPools[idx]
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break
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}
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}
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if pool == nil {
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// We didn't find any matching pools, invalid input
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writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errInvalidArgument), r.URL)
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return
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}
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poolIndices = append(poolIndices, idx)
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}
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if len(poolIndices) == 0 || !proxyDecommissionRequest(ctx, globalEndpoints[poolIndices[0]].Endpoints[0], w, r) {
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if err := z.Decommission(r.Context(), poolIndices...); err != nil {
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writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
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return
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}
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}
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}
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func (a adminAPIHandlers) CancelDecommission(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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objectAPI, _ := validateAdminReq(ctx, w, r, policy.DecommissionAdminAction)
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if objectAPI == nil {
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return
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}
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// Legacy args style such as non-ellipses style is not supported with this API.
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if globalEndpoints.Legacy() {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
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return
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}
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pools, ok := objectAPI.(*erasureServerPools)
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if !ok {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
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return
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}
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vars := mux.Vars(r)
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v := vars["pool"]
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byID := vars["by-id"] == "true"
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idx := -1
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if byID {
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if i, err := strconv.Atoi(v); err == nil && i >= 0 && i < len(globalEndpoints) {
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idx = i
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}
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} else {
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idx = globalEndpoints.GetPoolIdx(v)
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}
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if idx == -1 {
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// We didn't find any matching pools, invalid input
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writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errInvalidArgument), r.URL)
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return
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}
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if !proxyDecommissionRequest(ctx, globalEndpoints[idx].Endpoints[0], w, r) {
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if err := pools.DecommissionCancel(ctx, idx); err != nil {
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writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
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return
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}
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}
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}
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func (a adminAPIHandlers) StatusPool(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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objectAPI, _ := validateAdminReq(ctx, w, r, policy.ServerInfoAdminAction, policy.DecommissionAdminAction)
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if objectAPI == nil {
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return
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}
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// Legacy args style such as non-ellipses style is not supported with this API.
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if globalEndpoints.Legacy() {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
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return
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}
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pools, ok := objectAPI.(*erasureServerPools)
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if !ok {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
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return
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}
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vars := mux.Vars(r)
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v := vars["pool"]
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byID := vars["by-id"] == "true"
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idx := -1
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if byID {
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if i, err := strconv.Atoi(v); err == nil && i >= 0 && i < len(globalEndpoints) {
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idx = i
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}
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} else {
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idx = globalEndpoints.GetPoolIdx(v)
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}
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if idx == -1 {
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apiErr := toAdminAPIErr(ctx, errInvalidArgument)
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apiErr.Description = fmt.Sprintf("specified pool '%s' not found, please specify a valid pool", v)
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// We didn't find any matching pools, invalid input
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writeErrorResponseJSON(ctx, w, apiErr, r.URL)
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return
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}
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status, err := pools.Status(r.Context(), idx)
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if err != nil {
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writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
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return
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}
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adminLogIf(r.Context(), json.NewEncoder(w).Encode(&status))
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}
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func (a adminAPIHandlers) ListPools(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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objectAPI, _ := validateAdminReq(ctx, w, r, policy.ServerInfoAdminAction, policy.DecommissionAdminAction)
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if objectAPI == nil {
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return
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}
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// Legacy args style such as non-ellipses style is not supported with this API.
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if globalEndpoints.Legacy() {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
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return
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}
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pools, ok := objectAPI.(*erasureServerPools)
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if !ok {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
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return
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}
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poolsStatus := make([]PoolStatus, len(globalEndpoints))
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for idx := range globalEndpoints {
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status, err := pools.Status(r.Context(), idx)
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if err != nil {
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writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
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return
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}
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poolsStatus[idx] = status
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}
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adminLogIf(r.Context(), json.NewEncoder(w).Encode(poolsStatus))
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}
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func (a adminAPIHandlers) RebalanceStart(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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objectAPI, _ := validateAdminReq(ctx, w, r, policy.RebalanceAdminAction)
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if objectAPI == nil {
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return
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}
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// NB rebalance-start admin API is always coordinated from first pool's
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// first node. The following is required to serialize (the effects of)
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// concurrent rebalance-start commands.
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if ep := globalEndpoints[0].Endpoints[0]; !ep.IsLocal {
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for nodeIdx, proxyEp := range globalProxyEndpoints {
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if proxyEp.Endpoint.Host == ep.Host {
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if proxyRequestByNodeIndex(ctx, w, r, nodeIdx) {
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return
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}
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}
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}
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}
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pools, ok := objectAPI.(*erasureServerPools)
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if !ok || len(pools.serverPools) == 1 {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
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return
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}
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if pools.IsDecommissionRunning() {
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writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, errRebalanceDecommissionAlreadyRunning), r.URL)
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return
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}
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if pools.IsRebalanceStarted() {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminRebalanceAlreadyStarted), r.URL)
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return
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}
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bucketInfos, err := objectAPI.ListBuckets(ctx, BucketOptions{})
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if err != nil {
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writeErrorResponseJSON(ctx, w, toAPIError(ctx, err), r.URL)
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return
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}
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buckets := make([]string, 0, len(bucketInfos))
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for _, bInfo := range bucketInfos {
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buckets = append(buckets, bInfo.Name)
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}
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var id string
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if id, err = pools.initRebalanceMeta(ctx, buckets); err != nil {
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writeErrorResponseJSON(ctx, w, toAPIError(ctx, err), r.URL)
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return
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}
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// Rebalance routine is run on the first node of any pool participating in rebalance.
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pools.StartRebalance()
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b, err := json.Marshal(struct {
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ID string `json:"id"`
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}{ID: id})
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if err != nil {
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writeErrorResponseJSON(ctx, w, toAPIError(ctx, err), r.URL)
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return
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}
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writeSuccessResponseJSON(w, b)
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// Notify peers to load rebalance.bin and start rebalance routine if they happen to be
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// participating pool's leader node
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globalNotificationSys.LoadRebalanceMeta(ctx, true)
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}
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func (a adminAPIHandlers) RebalanceStatus(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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objectAPI, _ := validateAdminReq(ctx, w, r, policy.RebalanceAdminAction)
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if objectAPI == nil {
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return
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}
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// Proxy rebalance-status to first pool first node, so that users see a
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// consistent view of rebalance progress even though different rebalancing
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// pools may temporarily have out of date info on the others.
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if ep := globalEndpoints[0].Endpoints[0]; !ep.IsLocal {
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for nodeIdx, proxyEp := range globalProxyEndpoints {
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if proxyEp.Endpoint.Host == ep.Host {
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if proxyRequestByNodeIndex(ctx, w, r, nodeIdx) {
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return
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}
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}
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}
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}
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pools, ok := objectAPI.(*erasureServerPools)
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if !ok {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
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return
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}
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rs, err := rebalanceStatus(ctx, pools)
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if err != nil {
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if errors.Is(err, errRebalanceNotStarted) || errors.Is(err, errConfigNotFound) {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminRebalanceNotStarted), r.URL)
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return
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}
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adminLogIf(ctx, fmt.Errorf("failed to fetch rebalance status: %w", err))
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writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
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return
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}
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adminLogIf(r.Context(), json.NewEncoder(w).Encode(rs))
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}
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func (a adminAPIHandlers) RebalanceStop(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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objectAPI, _ := validateAdminReq(ctx, w, r, policy.RebalanceAdminAction)
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if objectAPI == nil {
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return
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}
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pools, ok := objectAPI.(*erasureServerPools)
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if !ok {
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writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
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return
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}
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// Cancel any ongoing rebalance operation
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globalNotificationSys.StopRebalance(r.Context())
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writeSuccessResponseHeadersOnly(w)
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adminLogIf(ctx, pools.saveRebalanceStats(GlobalContext, 0, rebalSaveStoppedAt))
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}
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func proxyDecommissionRequest(ctx context.Context, defaultEndPoint Endpoint, w http.ResponseWriter, r *http.Request) (proxy bool) {
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host := env.Get("_MINIO_DECOM_ENDPOINT_HOST", defaultEndPoint.Host)
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if host == "" {
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return
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}
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for nodeIdx, proxyEp := range globalProxyEndpoints {
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if proxyEp.Endpoint.Host == host && !proxyEp.IsLocal {
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if proxyRequestByNodeIndex(ctx, w, r, nodeIdx) {
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return true
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}
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}
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}
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return
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}
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