You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
122 lines
3.0 KiB
122 lines
3.0 KiB
/*
|
|
* MinIO Cloud Storage, (C) 2020 MinIO, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"net/http"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/minio/minio/cmd/config/api"
|
|
"github.com/minio/minio/cmd/logger"
|
|
"github.com/minio/minio/pkg/sys"
|
|
)
|
|
|
|
type apiConfig struct {
|
|
mu sync.RWMutex
|
|
|
|
requestsDeadline time.Duration
|
|
requestsPool chan struct{}
|
|
readyDeadline time.Duration
|
|
corsAllowOrigins []string
|
|
}
|
|
|
|
func (t *apiConfig) init(cfg api.Config, setDriveCount int) {
|
|
t.mu.Lock()
|
|
defer t.mu.Unlock()
|
|
|
|
t.readyDeadline = cfg.ReadyDeadline
|
|
t.corsAllowOrigins = cfg.CorsAllowOrigin
|
|
|
|
var apiRequestsMaxPerNode int
|
|
if cfg.RequestsMax <= 0 {
|
|
stats, err := sys.GetStats()
|
|
if err != nil {
|
|
logger.LogIf(GlobalContext, err)
|
|
// Default to 16 GiB, not critical.
|
|
stats.TotalRAM = 16 << 30
|
|
}
|
|
// max requests per node is calculated as
|
|
// total_ram / ram_per_request
|
|
// ram_per_request is 4MiB * setDriveCount + 2 * 10MiB (default erasure block size)
|
|
apiRequestsMaxPerNode = int(stats.TotalRAM / uint64(setDriveCount*readBlockSize+blockSizeV1*2))
|
|
} else {
|
|
apiRequestsMaxPerNode = cfg.RequestsMax
|
|
if len(globalEndpoints.Hostnames()) > 0 {
|
|
apiRequestsMaxPerNode /= len(globalEndpoints.Hostnames())
|
|
}
|
|
}
|
|
|
|
t.requestsPool = make(chan struct{}, apiRequestsMaxPerNode)
|
|
t.requestsDeadline = cfg.RequestsDeadline
|
|
}
|
|
|
|
func (t *apiConfig) getCorsAllowOrigins() []string {
|
|
t.mu.RLock()
|
|
defer t.mu.RUnlock()
|
|
|
|
corsAllowOrigins := make([]string, len(t.corsAllowOrigins))
|
|
copy(corsAllowOrigins, t.corsAllowOrigins)
|
|
return corsAllowOrigins
|
|
}
|
|
|
|
func (t *apiConfig) getReadyDeadline() time.Duration {
|
|
t.mu.RLock()
|
|
defer t.mu.RUnlock()
|
|
|
|
if t.readyDeadline == 0 {
|
|
return 10 * time.Second
|
|
}
|
|
|
|
return t.readyDeadline
|
|
}
|
|
|
|
func (t *apiConfig) getRequestsPool() (chan struct{}, <-chan time.Time) {
|
|
t.mu.RLock()
|
|
defer t.mu.RUnlock()
|
|
|
|
if t.requestsPool == nil {
|
|
return nil, nil
|
|
}
|
|
|
|
return t.requestsPool, time.NewTimer(t.requestsDeadline).C
|
|
}
|
|
|
|
// maxClients throttles the S3 API calls
|
|
func maxClients(f http.HandlerFunc) http.HandlerFunc {
|
|
return func(w http.ResponseWriter, r *http.Request) {
|
|
pool, deadlineTimer := globalAPIConfig.getRequestsPool()
|
|
if pool == nil {
|
|
f.ServeHTTP(w, r)
|
|
return
|
|
}
|
|
|
|
select {
|
|
case pool <- struct{}{}:
|
|
defer func() { <-pool }()
|
|
f.ServeHTTP(w, r)
|
|
case <-deadlineTimer:
|
|
// Send a http timeout message
|
|
writeErrorResponse(r.Context(), w,
|
|
errorCodes.ToAPIErr(ErrOperationMaxedOut),
|
|
r.URL, guessIsBrowserReq(r))
|
|
return
|
|
case <-r.Context().Done():
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|