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1026 lines
28 KiB
1026 lines
28 KiB
/*
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* MinIO Cloud Storage, (C) 2019 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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package cmd
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import (
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"bytes"
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"context"
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"crypto/tls"
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"encoding/gob"
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"io"
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"io/ioutil"
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"math"
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"net/url"
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"strconv"
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"sync"
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"sync/atomic"
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"time"
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"github.com/dustin/go-humanize"
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"github.com/minio/minio/cmd/http"
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"github.com/minio/minio/cmd/logger"
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"github.com/minio/minio/cmd/rest"
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bucketsse "github.com/minio/minio/pkg/bucket/encryption"
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"github.com/minio/minio/pkg/bucket/lifecycle"
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objectlock "github.com/minio/minio/pkg/bucket/object/lock"
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"github.com/minio/minio/pkg/bucket/policy"
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"github.com/minio/minio/pkg/event"
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"github.com/minio/minio/pkg/madmin"
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xnet "github.com/minio/minio/pkg/net"
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trace "github.com/minio/minio/pkg/trace"
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)
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// client to talk to peer Nodes.
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type peerRESTClient struct {
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host *xnet.Host
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restClient *rest.Client
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connected int32
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}
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// Reconnect to a peer rest server.
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func (client *peerRESTClient) reConnect() {
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atomic.StoreInt32(&client.connected, 1)
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}
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// Wrapper to restClient.Call to handle network errors, in case of network error the connection is marked disconnected
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// permanently. The only way to restore the connection is at the xl-sets layer by xlsets.monitorAndConnectEndpoints()
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// after verifying format.json
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func (client *peerRESTClient) call(method string, values url.Values, body io.Reader, length int64) (respBody io.ReadCloser, err error) {
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return client.callWithContext(GlobalContext, method, values, body, length)
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}
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// Wrapper to restClient.Call to handle network errors, in case of network error the connection is marked disconnected
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// permanently. The only way to restore the connection is at the xl-sets layer by xlsets.monitorAndConnectEndpoints()
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// after verifying format.json
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func (client *peerRESTClient) callWithContext(ctx context.Context, method string, values url.Values, body io.Reader, length int64) (respBody io.ReadCloser, err error) {
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if !client.IsOnline() {
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client.reConnect()
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}
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if values == nil {
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values = make(url.Values)
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}
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respBody, err = client.restClient.CallWithContext(ctx, method, values, body, length)
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if err == nil {
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return respBody, nil
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}
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if isNetworkError(err) {
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atomic.StoreInt32(&client.connected, 0)
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}
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return nil, err
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}
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// Stringer provides a canonicalized representation of node.
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func (client *peerRESTClient) String() string {
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return client.host.String()
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}
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// IsOnline - returns whether RPC client failed to connect or not.
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func (client *peerRESTClient) IsOnline() bool {
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return atomic.LoadInt32(&client.connected) == 1
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}
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// Close - marks the client as closed.
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func (client *peerRESTClient) Close() error {
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atomic.StoreInt32(&client.connected, 0)
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client.restClient.Close()
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return nil
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}
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// GetLocksResp stores various info from the client for each lock that is requested.
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type GetLocksResp []map[string][]lockRequesterInfo
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// GetLocks - fetch older locks for a remote node.
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func (client *peerRESTClient) GetLocks() (locks GetLocksResp, err error) {
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respBody, err := client.call(peerRESTMethodGetLocks, nil, nil, -1)
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if err != nil {
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return
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}
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defer http.DrainBody(respBody)
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err = gob.NewDecoder(respBody).Decode(&locks)
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return locks, err
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}
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// ServerInfo - fetch server information for a remote node.
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func (client *peerRESTClient) ServerInfo() (info madmin.ServerProperties, err error) {
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respBody, err := client.call(peerRESTMethodServerInfo, nil, nil, -1)
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if err != nil {
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return
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}
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defer http.DrainBody(respBody)
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err = gob.NewDecoder(respBody).Decode(&info)
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return info, err
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}
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type networkOverloadedErr struct{}
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var networkOverloaded networkOverloadedErr
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func (n networkOverloadedErr) Error() string {
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return "network overloaded"
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}
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type progressReader struct {
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r io.Reader
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progressChan chan int64
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}
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func (p *progressReader) Read(b []byte) (int, error) {
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n, err := p.r.Read(b)
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if err != nil && err != io.EOF {
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return n, err
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}
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p.progressChan <- int64(n)
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return n, err
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}
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func (client *peerRESTClient) doNetOBDTest(ctx context.Context, dataSize int64, threadCount uint) (info madmin.NetOBDInfo, err error) {
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latencies := []float64{}
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throughputs := []float64{}
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buf := make([]byte, dataSize)
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buflimiter := make(chan struct{}, threadCount)
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errChan := make(chan error, threadCount)
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totalTransferred := int64(0)
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transferChan := make(chan int64, threadCount)
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go func() {
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for v := range transferChan {
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atomic.AddInt64(&totalTransferred, v)
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}
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}()
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// ensure enough samples to obtain normal distribution
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maxSamples := int(10 * threadCount)
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innerCtx, cancel := context.WithCancel(ctx)
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slowSamples := int32(0)
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maxSlowSamples := int32(maxSamples / 20)
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slowSample := func() {
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if slowSamples > maxSlowSamples { // 5% of total
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return
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}
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if atomic.AddInt32(&slowSamples, 1) >= maxSlowSamples {
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errChan <- networkOverloaded
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cancel()
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}
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}
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wg := sync.WaitGroup{}
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finish := func() {
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<-buflimiter
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wg.Done()
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}
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for i := 0; i < maxSamples; i++ {
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select {
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case <-ctx.Done():
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return info, ctx.Err()
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case err = <-errChan:
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case buflimiter <- struct{}{}:
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wg.Add(1)
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if innerCtx.Err() != nil {
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finish()
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continue
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}
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go func(i int) {
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bufReader := bytes.NewReader(buf)
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bufReadCloser := ioutil.NopCloser(&progressReader{
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r: bufReader,
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progressChan: transferChan,
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})
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start := time.Now()
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before := atomic.LoadInt64(&totalTransferred)
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ctx, cancel := context.WithTimeout(innerCtx, 10*time.Second)
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defer cancel()
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respBody, err := client.callWithContext(ctx, peerRESTMethodNetOBDInfo, nil, bufReadCloser, dataSize)
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if err != nil {
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if netErr, ok := err.(*rest.NetworkError); ok {
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if urlErr, ok := netErr.Err.(*url.Error); ok {
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if urlErr.Err.Error() == context.DeadlineExceeded.Error() {
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slowSample()
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finish()
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return
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}
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}
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}
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errChan <- err
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finish()
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return
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}
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http.DrainBody(respBody)
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after := atomic.LoadInt64(&totalTransferred)
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finish()
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end := time.Now()
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latency := float64(end.Sub(start).Seconds())
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if latency > maxLatencyForSizeThreads(dataSize, threadCount) {
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slowSample()
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}
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/* Throughput = (total data transferred across all threads / time taken) */
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throughput := float64(float64((after - before)) / latency)
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latencies = append(latencies, latency)
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throughputs = append(throughputs, throughput)
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}(i)
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}
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}
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wg.Wait()
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if err != nil {
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return info, err
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}
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latency, throughput, err := xnet.ComputeOBDStats(latencies, throughputs)
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info = madmin.NetOBDInfo{
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Latency: latency,
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Throughput: throughput,
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}
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return info, err
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}
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func maxLatencyForSizeThreads(size int64, threadCount uint) float64 {
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Gbit100 := 12.5 * float64(humanize.GiByte)
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Gbit40 := 5.00 * float64(humanize.GiByte)
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Gbit25 := 3.25 * float64(humanize.GiByte)
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Gbit10 := 1.25 * float64(humanize.GiByte)
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// Gbit1 := 0.25 * float64(humanize.GiByte)
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// Given the current defaults, each combination of size/thread
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// is supposed to fully saturate the intended pipe when all threads are active
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// i.e. if the test is performed in a perfectly controlled environment, i.e. without
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// CPU scheduling latencies and/or network jitters, then all threads working
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// simultaneously should result in each of them completing in 1s
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//
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// In reality, I've assumed a normal distribution of latency with expected mean of 1s and min of 0s
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// Then, 95% of threads should complete within 2 seconds (2 std. deviations from the mean). The 2s comes
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// from fitting the normal curve such that the mean is 1.
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//
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// i.e. we expect that no more than 5% of threads to take longer than 2s to push the data.
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//
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// throughput | max latency
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// 100 Gbit | 2s
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// 40 Gbit | 2s
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// 25 Gbit | 2s
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// 10 Gbit | 2s
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// 1 Gbit | inf
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throughput := float64(int64(size) * int64(threadCount))
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if throughput >= Gbit100 {
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return 2.0
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} else if throughput >= Gbit40 {
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return 2.0
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} else if throughput >= Gbit25 {
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return 2.0
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} else if throughput >= Gbit10 {
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return 2.0
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}
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return math.MaxFloat64
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}
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// NetOBDInfo - fetch Net OBD information for a remote node.
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func (client *peerRESTClient) NetOBDInfo(ctx context.Context) (info madmin.NetOBDInfo, err error) {
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// 100 Gbit -> 256 MiB * 50 threads
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// 40 Gbit -> 256 MiB * 20 threads
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// 25 Gbit -> 128 MiB * 25 threads
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// 10 Gbit -> 128 MiB * 10 threads
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// 1 Gbit -> 64 MiB * 2 threads
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type step struct {
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size int64
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threads uint
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}
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steps := []step{
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{ // 100 Gbit
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size: 256 * humanize.MiByte,
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threads: 50,
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},
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{ // 40 Gbit
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size: 256 * humanize.MiByte,
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threads: 20,
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},
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{ // 25 Gbit
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size: 128 * humanize.MiByte,
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threads: 25,
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},
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{ // 10 Gbit
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size: 128 * humanize.MiByte,
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threads: 10,
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},
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{ // 1 Gbit
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size: 64 * humanize.MiByte,
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threads: 2,
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},
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}
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for i := range steps {
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size := steps[i].size
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threads := steps[i].threads
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if info, err = client.doNetOBDTest(ctx, size, threads); err != nil {
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if err == networkOverloaded {
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continue
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}
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if netErr, ok := err.(*rest.NetworkError); ok {
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if urlErr, ok := netErr.Err.(*url.Error); ok {
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if urlErr.Err.Error() == context.Canceled.Error() {
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continue
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}
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if urlErr.Err.Error() == context.DeadlineExceeded.Error() {
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continue
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}
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}
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}
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}
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return info, err
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}
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return info, err
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}
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// DispatchNetOBDInfo - dispatch other nodes to run Net OBD.
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func (client *peerRESTClient) DispatchNetOBDInfo(ctx context.Context) (info madmin.ServerNetOBDInfo, err error) {
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respBody, err := client.callWithContext(ctx, peerRESTMethodDispatchNetOBDInfo, nil, nil, -1)
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if err != nil {
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return
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}
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defer http.DrainBody(respBody)
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waitReader, err := waitForHTTPResponse(respBody)
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if err != nil {
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return
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}
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err = gob.NewDecoder(waitReader).Decode(&info)
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return
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}
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// DriveOBDInfo - fetch Drive OBD information for a remote node.
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func (client *peerRESTClient) DriveOBDInfo(ctx context.Context) (info madmin.ServerDrivesOBDInfo, err error) {
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respBody, err := client.callWithContext(ctx, peerRESTMethodDriveOBDInfo, nil, nil, -1)
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if err != nil {
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return
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}
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defer http.DrainBody(respBody)
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err = gob.NewDecoder(respBody).Decode(&info)
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return info, err
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}
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// CPUOBDInfo - fetch CPU OBD information for a remote node.
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func (client *peerRESTClient) CPUOBDInfo(ctx context.Context) (info madmin.ServerCPUOBDInfo, err error) {
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respBody, err := client.callWithContext(ctx, peerRESTMethodCPUOBDInfo, nil, nil, -1)
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if err != nil {
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return
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}
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defer http.DrainBody(respBody)
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err = gob.NewDecoder(respBody).Decode(&info)
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return info, err
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}
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// DiskHwOBDInfo - fetch Disk HW OBD information for a remote node.
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func (client *peerRESTClient) DiskHwOBDInfo(ctx context.Context) (info madmin.ServerDiskHwOBDInfo, err error) {
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respBody, err := client.callWithContext(ctx, peerRESTMethodDiskHwOBDInfo, nil, nil, -1)
|
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if err != nil {
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return
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}
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defer http.DrainBody(respBody)
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err = gob.NewDecoder(respBody).Decode(&info)
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return info, err
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}
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// OsOBDInfo - fetch OsInfo OBD information for a remote node.
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func (client *peerRESTClient) OsOBDInfo(ctx context.Context) (info madmin.ServerOsOBDInfo, err error) {
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respBody, err := client.callWithContext(ctx, peerRESTMethodOsInfoOBDInfo, nil, nil, -1)
|
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if err != nil {
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return
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}
|
|
defer http.DrainBody(respBody)
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err = gob.NewDecoder(respBody).Decode(&info)
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return info, err
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|
}
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|
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|
// MemOBDInfo - fetch MemInfo OBD information for a remote node.
|
|
func (client *peerRESTClient) MemOBDInfo(ctx context.Context) (info madmin.ServerMemOBDInfo, err error) {
|
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respBody, err := client.callWithContext(ctx, peerRESTMethodMemOBDInfo, nil, nil, -1)
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
err = gob.NewDecoder(respBody).Decode(&info)
|
|
return info, err
|
|
}
|
|
|
|
// ProcOBDInfo - fetch ProcInfo OBD information for a remote node.
|
|
func (client *peerRESTClient) ProcOBDInfo(ctx context.Context) (info madmin.ServerProcOBDInfo, err error) {
|
|
respBody, err := client.callWithContext(ctx, peerRESTMethodProcOBDInfo, nil, nil, -1)
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
err = gob.NewDecoder(respBody).Decode(&info)
|
|
return info, err
|
|
}
|
|
|
|
// StartProfiling - Issues profiling command on the peer node.
|
|
func (client *peerRESTClient) StartProfiling(profiler string) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTProfiler, profiler)
|
|
respBody, err := client.call(peerRESTMethodStartProfiling, values, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// DownloadProfileData - download profiled data from a remote node.
|
|
func (client *peerRESTClient) DownloadProfileData() (data map[string][]byte, err error) {
|
|
respBody, err := client.call(peerRESTMethodDownloadProfilingData, nil, nil, -1)
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
err = gob.NewDecoder(respBody).Decode(&data)
|
|
return data, err
|
|
}
|
|
|
|
// DeleteBucket - Delete notification and policies related to the bucket.
|
|
func (client *peerRESTClient) DeleteBucket(bucket string) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTBucket, bucket)
|
|
respBody, err := client.call(peerRESTMethodDeleteBucket, values, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// ReloadFormat - reload format on the peer node.
|
|
func (client *peerRESTClient) ReloadFormat(dryRun bool) error {
|
|
values := make(url.Values)
|
|
if dryRun {
|
|
values.Set(peerRESTDryRun, "true")
|
|
} else {
|
|
values.Set(peerRESTDryRun, "false")
|
|
}
|
|
|
|
respBody, err := client.call(peerRESTMethodReloadFormat, values, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// RemoveBucketPolicy - Remove bucket policy on the peer node.
|
|
func (client *peerRESTClient) RemoveBucketPolicy(bucket string) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTBucket, bucket)
|
|
respBody, err := client.call(peerRESTMethodBucketPolicyRemove, values, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// RemoveBucketObjectLockConfig - Remove bucket object lock config on the peer node.
|
|
func (client *peerRESTClient) RemoveBucketObjectLockConfig(bucket string) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTBucket, bucket)
|
|
respBody, err := client.call(peerRESTMethodBucketObjectLockConfigRemove, values, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// cycleServerBloomFilter will cycle the bloom filter to start recording to index y if not already.
|
|
// The response will contain a bloom filter starting at index x up to, but not including index y.
|
|
// If y is 0, the response will not update y, but return the currently recorded information
|
|
// from the current x to y-1.
|
|
func (client *peerRESTClient) cycleServerBloomFilter(ctx context.Context, req bloomFilterRequest) (*bloomFilterResponse, error) {
|
|
var reader bytes.Buffer
|
|
err := gob.NewEncoder(&reader).Encode(req)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
respBody, err := client.call(peerRESTMethodCycleBloom, nil, &reader, -1)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var resp bloomFilterResponse
|
|
defer http.DrainBody(respBody)
|
|
return &resp, gob.NewDecoder(respBody).Decode(&resp)
|
|
}
|
|
|
|
// SetBucketPolicy - Set bucket policy on the peer node.
|
|
func (client *peerRESTClient) SetBucketPolicy(bucket string, bucketPolicy *policy.Policy) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTBucket, bucket)
|
|
|
|
var reader bytes.Buffer
|
|
err := gob.NewEncoder(&reader).Encode(bucketPolicy)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
respBody, err := client.call(peerRESTMethodBucketPolicySet, values, &reader, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// RemoveBucketLifecycle - Remove bucket lifecycle configuration on the peer node
|
|
func (client *peerRESTClient) RemoveBucketLifecycle(bucket string) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTBucket, bucket)
|
|
respBody, err := client.call(peerRESTMethodBucketLifecycleRemove, values, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// SetBucketLifecycle - Set bucket lifecycle configuration on the peer node
|
|
func (client *peerRESTClient) SetBucketLifecycle(bucket string, bucketLifecycle *lifecycle.Lifecycle) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTBucket, bucket)
|
|
|
|
var reader bytes.Buffer
|
|
err := gob.NewEncoder(&reader).Encode(bucketLifecycle)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
respBody, err := client.call(peerRESTMethodBucketLifecycleSet, values, &reader, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// RemoveBucketSSEConfig - Remove bucket encryption configuration on the peer node
|
|
func (client *peerRESTClient) RemoveBucketSSEConfig(bucket string) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTBucket, bucket)
|
|
respBody, err := client.call(peerRESTMethodBucketEncryptionRemove, values, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// SetBucketSSEConfig - Set bucket encryption configuration on the peer node
|
|
func (client *peerRESTClient) SetBucketSSEConfig(bucket string, encConfig *bucketsse.BucketSSEConfig) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTBucket, bucket)
|
|
|
|
var reader bytes.Buffer
|
|
err := gob.NewEncoder(&reader).Encode(encConfig)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
respBody, err := client.call(peerRESTMethodBucketEncryptionSet, values, &reader, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// PutBucketNotification - Put bucket notification on the peer node.
|
|
func (client *peerRESTClient) PutBucketNotification(bucket string, rulesMap event.RulesMap) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTBucket, bucket)
|
|
|
|
var reader bytes.Buffer
|
|
err := gob.NewEncoder(&reader).Encode(&rulesMap)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
respBody, err := client.call(peerRESTMethodBucketNotificationPut, values, &reader, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// PutBucketObjectLockConfig - PUT bucket object lock configuration.
|
|
func (client *peerRESTClient) PutBucketObjectLockConfig(bucket string, retention objectlock.Retention) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTBucket, bucket)
|
|
|
|
var reader bytes.Buffer
|
|
err := gob.NewEncoder(&reader).Encode(&retention)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
respBody, err := client.call(peerRESTMethodPutBucketObjectLockConfig, values, &reader, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// DeletePolicy - delete a specific canned policy.
|
|
func (client *peerRESTClient) DeletePolicy(policyName string) (err error) {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTPolicy, policyName)
|
|
|
|
respBody, err := client.call(peerRESTMethodDeletePolicy, values, nil, -1)
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// LoadPolicy - reload a specific canned policy.
|
|
func (client *peerRESTClient) LoadPolicy(policyName string) (err error) {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTPolicy, policyName)
|
|
|
|
respBody, err := client.call(peerRESTMethodLoadPolicy, values, nil, -1)
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// LoadPolicyMapping - reload a specific policy mapping
|
|
func (client *peerRESTClient) LoadPolicyMapping(userOrGroup string, isGroup bool) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTUserOrGroup, userOrGroup)
|
|
if isGroup {
|
|
values.Set(peerRESTIsGroup, "")
|
|
}
|
|
|
|
respBody, err := client.call(peerRESTMethodLoadPolicyMapping, values, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// DeleteUser - delete a specific user.
|
|
func (client *peerRESTClient) DeleteUser(accessKey string) (err error) {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTUser, accessKey)
|
|
|
|
respBody, err := client.call(peerRESTMethodDeleteUser, values, nil, -1)
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// DeleteServiceAccount - delete a specific service account.
|
|
func (client *peerRESTClient) DeleteServiceAccount(accessKey string) (err error) {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTUser, accessKey)
|
|
|
|
respBody, err := client.call(peerRESTMethodDeleteServiceAccount, values, nil, -1)
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// LoadUser - reload a specific user.
|
|
func (client *peerRESTClient) LoadUser(accessKey string, temp bool) (err error) {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTUser, accessKey)
|
|
values.Set(peerRESTUserTemp, strconv.FormatBool(temp))
|
|
|
|
respBody, err := client.call(peerRESTMethodLoadUser, values, nil, -1)
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// LoadServiceAccount - reload a specific service account.
|
|
func (client *peerRESTClient) LoadServiceAccount(accessKey string) (err error) {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTUser, accessKey)
|
|
|
|
respBody, err := client.call(peerRESTMethodLoadServiceAccount, values, nil, -1)
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// LoadGroup - send load group command to peers.
|
|
func (client *peerRESTClient) LoadGroup(group string) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTGroup, group)
|
|
respBody, err := client.call(peerRESTMethodLoadGroup, values, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// ServerUpdate - sends server update message to remote peers.
|
|
func (client *peerRESTClient) ServerUpdate(updateURL, sha256Hex string, latestReleaseTime time.Time) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTUpdateURL, updateURL)
|
|
values.Set(peerRESTSha256Hex, sha256Hex)
|
|
if !latestReleaseTime.IsZero() {
|
|
values.Set(peerRESTLatestRelease, latestReleaseTime.Format(time.RFC3339))
|
|
} else {
|
|
values.Set(peerRESTLatestRelease, "")
|
|
}
|
|
respBody, err := client.call(peerRESTMethodServerUpdate, values, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
// SignalService - sends signal to peer nodes.
|
|
func (client *peerRESTClient) SignalService(sig serviceSignal) error {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTSignal, strconv.Itoa(int(sig)))
|
|
respBody, err := client.call(peerRESTMethodSignalService, values, nil, -1)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
return nil
|
|
}
|
|
|
|
func (client *peerRESTClient) BackgroundHealStatus() (madmin.BgHealState, error) {
|
|
respBody, err := client.call(peerRESTMethodBackgroundHealStatus, nil, nil, -1)
|
|
if err != nil {
|
|
return madmin.BgHealState{}, err
|
|
}
|
|
defer http.DrainBody(respBody)
|
|
|
|
state := madmin.BgHealState{}
|
|
err = gob.NewDecoder(respBody).Decode(&state)
|
|
return state, err
|
|
}
|
|
|
|
func (client *peerRESTClient) doTrace(traceCh chan interface{}, doneCh <-chan struct{}, trcAll, trcErr bool) {
|
|
values := make(url.Values)
|
|
values.Set(peerRESTTraceAll, strconv.FormatBool(trcAll))
|
|
values.Set(peerRESTTraceErr, strconv.FormatBool(trcErr))
|
|
|
|
// To cancel the REST request in case doneCh gets closed.
|
|
ctx, cancel := context.WithCancel(GlobalContext)
|
|
|
|
cancelCh := make(chan struct{})
|
|
defer close(cancelCh)
|
|
go func() {
|
|
select {
|
|
case <-doneCh:
|
|
case <-cancelCh:
|
|
// There was an error in the REST request.
|
|
}
|
|
cancel()
|
|
}()
|
|
|
|
respBody, err := client.callWithContext(ctx, peerRESTMethodTrace, values, nil, -1)
|
|
defer http.DrainBody(respBody)
|
|
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
dec := gob.NewDecoder(respBody)
|
|
for {
|
|
var info trace.Info
|
|
if err = dec.Decode(&info); err != nil {
|
|
return
|
|
}
|
|
if len(info.NodeName) > 0 {
|
|
select {
|
|
case traceCh <- info:
|
|
default:
|
|
// Do not block on slow receivers.
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (client *peerRESTClient) doListen(listenCh chan interface{}, doneCh <-chan struct{}, v url.Values) {
|
|
// To cancel the REST request in case doneCh gets closed.
|
|
ctx, cancel := context.WithCancel(GlobalContext)
|
|
|
|
cancelCh := make(chan struct{})
|
|
defer close(cancelCh)
|
|
go func() {
|
|
select {
|
|
case <-doneCh:
|
|
case <-cancelCh:
|
|
// There was an error in the REST request.
|
|
}
|
|
cancel()
|
|
}()
|
|
|
|
respBody, err := client.callWithContext(ctx, peerRESTMethodListen, v, nil, -1)
|
|
defer http.DrainBody(respBody)
|
|
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
dec := gob.NewDecoder(respBody)
|
|
for {
|
|
var ev event.Event
|
|
if err = dec.Decode(&ev); err != nil {
|
|
return
|
|
}
|
|
if len(ev.EventVersion) > 0 {
|
|
select {
|
|
case listenCh <- ev:
|
|
default:
|
|
// Do not block on slow receivers.
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Listen - listen on peers.
|
|
func (client *peerRESTClient) Listen(listenCh chan interface{}, doneCh <-chan struct{}, v url.Values) {
|
|
go func() {
|
|
for {
|
|
client.doListen(listenCh, doneCh, v)
|
|
select {
|
|
case <-doneCh:
|
|
return
|
|
default:
|
|
// There was error in the REST request, retry after sometime as probably the peer is down.
|
|
time.Sleep(5 * time.Second)
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
|
|
// Trace - send http trace request to peer nodes
|
|
func (client *peerRESTClient) Trace(traceCh chan interface{}, doneCh <-chan struct{}, trcAll, trcErr bool) {
|
|
go func() {
|
|
for {
|
|
client.doTrace(traceCh, doneCh, trcAll, trcErr)
|
|
select {
|
|
case <-doneCh:
|
|
return
|
|
default:
|
|
// There was error in the REST request, retry after sometime as probably the peer is down.
|
|
time.Sleep(5 * time.Second)
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
|
|
// ConsoleLog - sends request to peer nodes to get console logs
|
|
func (client *peerRESTClient) ConsoleLog(logCh chan interface{}, doneCh <-chan struct{}) {
|
|
go func() {
|
|
for {
|
|
// get cancellation context to properly unsubscribe peers
|
|
ctx, cancel := context.WithCancel(GlobalContext)
|
|
respBody, err := client.callWithContext(ctx, peerRESTMethodLog, nil, nil, -1)
|
|
if err != nil {
|
|
// Retry the failed request.
|
|
time.Sleep(5 * time.Second)
|
|
} else {
|
|
dec := gob.NewDecoder(respBody)
|
|
|
|
go func() {
|
|
<-doneCh
|
|
cancel()
|
|
}()
|
|
|
|
for {
|
|
var log madmin.LogInfo
|
|
if err = dec.Decode(&log); err != nil {
|
|
break
|
|
}
|
|
select {
|
|
case logCh <- log:
|
|
default:
|
|
}
|
|
}
|
|
}
|
|
|
|
select {
|
|
case <-doneCh:
|
|
cancel()
|
|
http.DrainBody(respBody)
|
|
return
|
|
default:
|
|
// There was error in the REST request, retry.
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
|
|
func getRemoteHosts(endpointZones EndpointZones) []*xnet.Host {
|
|
var remoteHosts []*xnet.Host
|
|
for _, hostStr := range GetRemotePeers(endpointZones) {
|
|
host, err := xnet.ParseHost(hostStr)
|
|
if err != nil {
|
|
logger.LogIf(GlobalContext, err)
|
|
continue
|
|
}
|
|
remoteHosts = append(remoteHosts, host)
|
|
}
|
|
|
|
return remoteHosts
|
|
}
|
|
|
|
// newPeerRestClients creates new peer clients.
|
|
func newPeerRestClients(endpoints EndpointZones) []*peerRESTClient {
|
|
peerHosts := getRemoteHosts(endpoints)
|
|
restClients := make([]*peerRESTClient, len(peerHosts))
|
|
for i, host := range peerHosts {
|
|
client, err := newPeerRESTClient(host)
|
|
if err != nil {
|
|
logger.LogIf(GlobalContext, err)
|
|
continue
|
|
}
|
|
restClients[i] = client
|
|
}
|
|
|
|
return restClients
|
|
}
|
|
|
|
// Returns a peer rest client.
|
|
func newPeerRESTClient(peer *xnet.Host) (*peerRESTClient, error) {
|
|
scheme := "http"
|
|
if globalIsSSL {
|
|
scheme = "https"
|
|
}
|
|
|
|
serverURL := &url.URL{
|
|
Scheme: scheme,
|
|
Host: peer.String(),
|
|
Path: peerRESTPath,
|
|
}
|
|
|
|
var tlsConfig *tls.Config
|
|
if globalIsSSL {
|
|
tlsConfig = &tls.Config{
|
|
ServerName: peer.Name,
|
|
RootCAs: globalRootCAs,
|
|
}
|
|
}
|
|
|
|
trFn := newCustomHTTPTransport(tlsConfig, rest.DefaultRESTTimeout)
|
|
restClient, err := rest.NewClient(serverURL, trFn, newAuthToken)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &peerRESTClient{host: peer, restClient: restClient, connected: 1}, nil
|
|
}
|
|
|