mirror of https://github.com/minio/minio.git
201 lines
5.2 KiB
Go
201 lines
5.2 KiB
Go
// Copyright (c) 2015-2022 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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"bytes"
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"compress/gzip"
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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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"math/rand"
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"net/url"
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"time"
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"github.com/minio/madmin-go/v2"
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"github.com/minio/minio/internal/logger"
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)
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var callhomeLeaderLockTimeout = newDynamicTimeout(30*time.Second, 10*time.Second)
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// initCallhome will start the callhome task in the background.
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func initCallhome(ctx context.Context, objAPI ObjectLayer) {
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if !globalCallhomeConfig.Enabled() {
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return
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}
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go func() {
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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// Leader node (that successfully acquires the lock inside runCallhome)
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// will keep performing the callhome. If the leader goes down for some reason,
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// the lock will be released and another node will acquire it and take over
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// because of this loop.
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for {
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if !globalCallhomeConfig.Enabled() {
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return
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}
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if !runCallhome(ctx, objAPI) {
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// callhome was disabled or context was canceled
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return
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}
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// callhome running on a different node.
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// sleep for some time and try again.
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duration := time.Duration(r.Float64() * float64(globalCallhomeConfig.FrequencyDur()))
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if duration < time.Second {
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// Make sure to sleep atleast a second to avoid high CPU ticks.
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duration = time.Second
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}
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time.Sleep(duration)
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}
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}()
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}
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func runCallhome(ctx context.Context, objAPI ObjectLayer) bool {
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// Make sure only 1 callhome is running on the cluster.
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locker := objAPI.NewNSLock(minioMetaBucket, "callhome/runCallhome.lock")
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lkctx, err := locker.GetLock(ctx, callhomeLeaderLockTimeout)
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if err != nil {
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// lock timedout means some other node is the leader,
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// cycle back return 'true'
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return true
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}
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ctx = lkctx.Context()
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defer locker.Unlock(lkctx.Cancel)
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callhomeTimer := time.NewTimer(globalCallhomeConfig.FrequencyDur())
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defer callhomeTimer.Stop()
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for {
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if !globalCallhomeConfig.Enabled() {
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// Stop the processing as callhome got disabled
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return false
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}
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select {
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case <-ctx.Done():
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// indicates that we do not need to run callhome anymore
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return false
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case <-callhomeTimer.C:
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if !globalCallhomeConfig.Enabled() {
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// Stop the processing as callhome got disabled
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return false
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}
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performCallhome(ctx)
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// Reset the timer for next cycle.
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callhomeTimer.Reset(globalCallhomeConfig.FrequencyDur())
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}
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}
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}
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func performCallhome(ctx context.Context) {
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deadline := 10 * time.Second // Default deadline is 10secs for callhome
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objectAPI := newObjectLayerFn()
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if objectAPI == nil {
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logger.LogIf(ctx, errors.New("Callhome: object layer not ready"))
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return
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}
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healthCtx, healthCancel := context.WithTimeout(ctx, deadline)
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defer healthCancel()
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healthInfoCh := make(chan madmin.HealthInfo)
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query := url.Values{}
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for _, k := range madmin.HealthDataTypesList {
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query.Set(string(k), "true")
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}
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healthInfo := madmin.HealthInfo{
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TimeStamp: time.Now().UTC(),
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Version: madmin.HealthInfoVersion,
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Minio: madmin.MinioHealthInfo{
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Info: madmin.MinioInfo{
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DeploymentID: globalDeploymentID,
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},
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},
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}
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go fetchHealthInfo(healthCtx, objectAPI, &query, healthInfoCh, healthInfo)
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for {
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select {
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case hi, hasMore := <-healthInfoCh:
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if !hasMore {
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// Received all data. Send to SUBNET and return
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err := sendHealthInfo(ctx, healthInfo)
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if err != nil {
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logger.LogIf(ctx, fmt.Errorf("Unable to perform callhome: %w", err))
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}
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return
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}
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healthInfo = hi
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case <-healthCtx.Done():
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return
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}
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}
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}
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const (
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healthURL = "https://subnet.min.io/api/health/upload"
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healthURLDev = "http://localhost:9000/api/health/upload"
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)
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func sendHealthInfo(ctx context.Context, healthInfo madmin.HealthInfo) error {
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url := healthURL
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if globalIsCICD {
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url = healthURLDev
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}
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filename := fmt.Sprintf("health_%s.json.gz", UTCNow().Format("20060102150405"))
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url += "?filename=" + filename
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_, err := globalSubnetConfig.Upload(url, filename, createHealthJSONGzip(ctx, healthInfo))
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return err
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}
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func createHealthJSONGzip(ctx context.Context, healthInfo madmin.HealthInfo) []byte {
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var b bytes.Buffer
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gzWriter := gzip.NewWriter(&b)
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header := struct {
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Version string `json:"version"`
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}{Version: healthInfo.Version}
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enc := json.NewEncoder(gzWriter)
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if e := enc.Encode(header); e != nil {
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logger.LogIf(ctx, fmt.Errorf("Could not encode health info header: %w", e))
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return nil
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}
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if e := enc.Encode(healthInfo); e != nil {
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logger.LogIf(ctx, fmt.Errorf("Could not encode health info: %w", e))
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return nil
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}
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gzWriter.Flush()
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gzWriter.Close()
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return b.Bytes()
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}
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