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109 lines
3.4 KiB
Go
109 lines
3.4 KiB
Go
// Copyright (c) 2015-2021 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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"net/http"
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"strconv"
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xhttp "github.com/minio/minio/cmd/http"
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)
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const unavailable = "offline"
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// ClusterCheckHandler returns if the server is ready for requests.
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func ClusterCheckHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, w, "ClusterCheckHandler")
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if shouldProxy() {
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w.Header().Set(xhttp.MinIOServerStatus, unavailable)
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writeResponse(w, http.StatusServiceUnavailable, nil, mimeNone)
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return
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}
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objLayer := newObjectLayerFn()
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ctx, cancel := context.WithTimeout(ctx, globalAPIConfig.getClusterDeadline())
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defer cancel()
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opts := HealthOptions{Maintenance: r.URL.Query().Get("maintenance") == "true"}
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result := objLayer.Health(ctx, opts)
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if result.WriteQuorum > 0 {
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w.Header().Set(xhttp.MinIOWriteQuorum, strconv.Itoa(result.WriteQuorum))
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}
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if !result.Healthy {
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// return how many drives are being healed if any
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if result.HealingDrives > 0 {
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w.Header().Set(xhttp.MinIOHealingDrives, strconv.Itoa(result.HealingDrives))
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}
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// As a maintenance call we are purposefully asked to be taken
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// down, this is for orchestrators to know if we can safely
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// take this server down, return appropriate error.
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if opts.Maintenance {
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writeResponse(w, http.StatusPreconditionFailed, nil, mimeNone)
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} else {
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writeResponse(w, http.StatusServiceUnavailable, nil, mimeNone)
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}
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return
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}
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writeResponse(w, http.StatusOK, nil, mimeNone)
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}
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// ClusterReadCheckHandler returns if the server is ready for requests.
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func ClusterReadCheckHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, w, "ClusterReadCheckHandler")
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if shouldProxy() {
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w.Header().Set(xhttp.MinIOServerStatus, unavailable)
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writeResponse(w, http.StatusServiceUnavailable, nil, mimeNone)
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return
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}
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objLayer := newObjectLayerFn()
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ctx, cancel := context.WithTimeout(ctx, globalAPIConfig.getClusterDeadline())
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defer cancel()
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result := objLayer.ReadHealth(ctx)
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if !result {
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writeResponse(w, http.StatusServiceUnavailable, nil, mimeNone)
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return
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}
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writeResponse(w, http.StatusOK, nil, mimeNone)
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}
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// ReadinessCheckHandler Checks if the process is up. Always returns success.
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func ReadinessCheckHandler(w http.ResponseWriter, r *http.Request) {
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if shouldProxy() {
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// Service not initialized yet
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w.Header().Set(xhttp.MinIOServerStatus, unavailable)
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}
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writeResponse(w, http.StatusOK, nil, mimeNone)
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}
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// LivenessCheckHandler - Checks if the process is up. Always returns success.
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func LivenessCheckHandler(w http.ResponseWriter, r *http.Request) {
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if shouldProxy() {
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// Service not initialized yet
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w.Header().Set(xhttp.MinIOServerStatus, unavailable)
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}
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writeResponse(w, http.StatusOK, nil, mimeNone)
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}
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