mirror of
https://github.com/minio/minio.git
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408 lines
10 KiB
Go
408 lines
10 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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"math"
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"net/http"
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"os"
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"runtime"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/shirou/gopsutil/v3/mem"
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"github.com/minio/minio/internal/config/api"
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xioutil "github.com/minio/minio/internal/ioutil"
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"github.com/minio/minio/internal/logger"
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"github.com/minio/minio/internal/mcontext"
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)
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type apiConfig struct {
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mu sync.RWMutex
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requestsDeadline time.Duration
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requestsPool chan struct{}
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clusterDeadline time.Duration
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listQuorum string
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corsAllowOrigins []string
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// total drives per erasure set across pools.
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totalDriveCount int
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replicationPriority string
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replicationMaxWorkers int
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transitionWorkers int
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staleUploadsExpiry time.Duration
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staleUploadsCleanupInterval time.Duration
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deleteCleanupInterval time.Duration
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enableODirect bool
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gzipObjects bool
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rootAccess bool
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syncEvents bool
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objectMaxVersions int64
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}
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const (
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cgroupV1MemLimitFile = "/sys/fs/cgroup/memory/memory.limit_in_bytes"
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cgroupV2MemLimitFile = "/sys/fs/cgroup/memory.max"
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cgroupMemNoLimit = 9223372036854771712
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)
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func cgroupMemLimit() (limit uint64) {
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buf, err := os.ReadFile(cgroupV2MemLimitFile)
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if err != nil {
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buf, err = os.ReadFile(cgroupV1MemLimitFile)
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}
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if err != nil {
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return 0
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}
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limit, err = strconv.ParseUint(strings.TrimSpace(string(buf)), 10, 64)
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if err != nil {
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// The kernel can return valid but non integer values
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// but still, no need to interpret more
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return 0
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}
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if limit == cgroupMemNoLimit {
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// No limit set, It's the highest positive signed 64-bit
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// integer (2^63-1), rounded down to multiples of 4096 (2^12),
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// the most common page size on x86 systems - for cgroup_limits.
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return 0
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}
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return limit
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}
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func availableMemory() (available uint64) {
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available = 2048 * blockSizeV2 * 2 // Default to 4 GiB when we can't find the limits.
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if runtime.GOOS == "linux" {
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// Useful in container mode
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limit := cgroupMemLimit()
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if limit > 0 {
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// A valid value is found, return its 75%
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available = (limit * 3) / 4
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return
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}
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} // for all other platforms limits are based on virtual memory.
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memStats, err := mem.VirtualMemory()
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if err != nil {
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return
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}
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// A valid value is available return its 75%
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available = (memStats.Available * 3) / 4
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return
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}
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func (t *apiConfig) init(cfg api.Config, setDriveCounts []int) {
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t.mu.Lock()
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defer t.mu.Unlock()
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clusterDeadline := cfg.ClusterDeadline
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if clusterDeadline == 0 {
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clusterDeadline = 10 * time.Second
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}
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t.clusterDeadline = clusterDeadline
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corsAllowOrigin := cfg.CorsAllowOrigin
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if len(corsAllowOrigin) == 0 {
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corsAllowOrigin = []string{"*"}
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}
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t.corsAllowOrigins = corsAllowOrigin
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maxSetDrives := 0
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for _, setDriveCount := range setDriveCounts {
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t.totalDriveCount += setDriveCount
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if setDriveCount > maxSetDrives {
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maxSetDrives = setDriveCount
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}
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}
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var apiRequestsMaxPerNode int
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if cfg.RequestsMax <= 0 {
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// Returns 75% of max memory allowed
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maxMem := availableMemory()
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// max requests per node is calculated as
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// total_ram / ram_per_request
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// ram_per_request is (2MiB+128KiB) * driveCount \
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// + 2 * 10MiB (default erasure block size v1) + 2 * 1MiB (default erasure block size v2)
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blockSize := xioutil.BlockSizeLarge + xioutil.BlockSizeSmall
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apiRequestsMaxPerNode = int(maxMem / uint64(maxSetDrives*blockSize+int(blockSizeV1*2+blockSizeV2*2)))
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if globalIsDistErasure {
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logger.Info("Automatically configured API requests per node based on available memory on the system: %d", apiRequestsMaxPerNode)
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}
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} else {
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apiRequestsMaxPerNode = cfg.RequestsMax
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if n := totalNodeCount(); n > 0 {
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apiRequestsMaxPerNode /= n
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}
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}
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if cap(t.requestsPool) != apiRequestsMaxPerNode {
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// Only replace if needed.
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// Existing requests will use the previous limit,
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// but new requests will use the new limit.
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// There will be a short overlap window,
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// but this shouldn't last long.
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t.requestsPool = make(chan struct{}, apiRequestsMaxPerNode)
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}
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t.requestsDeadline = cfg.RequestsDeadline
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listQuorum := cfg.ListQuorum
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if listQuorum == "" {
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listQuorum = "strict"
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}
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t.listQuorum = listQuorum
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if globalReplicationPool != nil &&
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(cfg.ReplicationPriority != t.replicationPriority || cfg.ReplicationMaxWorkers != t.replicationMaxWorkers) {
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globalReplicationPool.ResizeWorkerPriority(cfg.ReplicationPriority, cfg.ReplicationMaxWorkers)
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}
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t.replicationPriority = cfg.ReplicationPriority
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t.replicationMaxWorkers = cfg.ReplicationMaxWorkers
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// N B api.transition_workers will be deprecated
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if globalTransitionState != nil {
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globalTransitionState.UpdateWorkers(cfg.TransitionWorkers)
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}
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t.transitionWorkers = cfg.TransitionWorkers
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t.staleUploadsExpiry = cfg.StaleUploadsExpiry
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t.staleUploadsCleanupInterval = cfg.StaleUploadsCleanupInterval
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t.deleteCleanupInterval = cfg.DeleteCleanupInterval
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t.enableODirect = cfg.EnableODirect
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t.gzipObjects = cfg.GzipObjects
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t.rootAccess = cfg.RootAccess
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t.syncEvents = cfg.SyncEvents
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t.objectMaxVersions = cfg.ObjectMaxVersions
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}
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func (t *apiConfig) odirectEnabled() bool {
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t.mu.RLock()
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defer t.mu.RUnlock()
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return t.enableODirect
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}
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func (t *apiConfig) shouldGzipObjects() bool {
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t.mu.RLock()
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defer t.mu.RUnlock()
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return t.gzipObjects
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}
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func (t *apiConfig) permitRootAccess() bool {
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t.mu.RLock()
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defer t.mu.RUnlock()
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return t.rootAccess
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}
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func (t *apiConfig) getListQuorum() string {
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t.mu.RLock()
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defer t.mu.RUnlock()
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if t.listQuorum == "" {
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return "strict"
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}
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return t.listQuorum
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}
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func (t *apiConfig) getCorsAllowOrigins() []string {
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t.mu.RLock()
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defer t.mu.RUnlock()
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if len(t.corsAllowOrigins) == 0 {
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return []string{"*"}
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}
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corsAllowOrigins := make([]string, len(t.corsAllowOrigins))
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copy(corsAllowOrigins, t.corsAllowOrigins)
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return corsAllowOrigins
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}
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func (t *apiConfig) getStaleUploadsCleanupInterval() time.Duration {
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t.mu.RLock()
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defer t.mu.RUnlock()
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if t.staleUploadsCleanupInterval == 0 {
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return 6 * time.Hour // default 6 hours
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}
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return t.staleUploadsCleanupInterval
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}
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func (t *apiConfig) getStaleUploadsExpiry() time.Duration {
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t.mu.RLock()
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defer t.mu.RUnlock()
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if t.staleUploadsExpiry == 0 {
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return 24 * time.Hour // default 24 hours
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}
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return t.staleUploadsExpiry
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}
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func (t *apiConfig) getDeleteCleanupInterval() time.Duration {
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t.mu.RLock()
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defer t.mu.RUnlock()
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if t.deleteCleanupInterval == 0 {
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return 5 * time.Minute // every 5 minutes
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}
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return t.deleteCleanupInterval
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}
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func (t *apiConfig) getClusterDeadline() time.Duration {
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t.mu.RLock()
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defer t.mu.RUnlock()
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if t.clusterDeadline == 0 {
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return 10 * time.Second
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}
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return t.clusterDeadline
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}
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func (t *apiConfig) getRequestsPoolCapacity() int {
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t.mu.RLock()
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defer t.mu.RUnlock()
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return cap(t.requestsPool)
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}
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func (t *apiConfig) getRequestsPool() (chan struct{}, time.Duration) {
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t.mu.RLock()
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defer t.mu.RUnlock()
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if t.requestsPool == nil {
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return nil, 10 * time.Second
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}
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if t.requestsDeadline <= 0 {
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return t.requestsPool, 10 * time.Second
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}
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return t.requestsPool, t.requestsDeadline
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}
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// maxClients throttles the S3 API calls
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func maxClients(f http.HandlerFunc) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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globalHTTPStats.incS3RequestsIncoming()
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if r.Header.Get(globalObjectPerfUserMetadata) == "" {
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if val := globalServiceFreeze.Load(); val != nil {
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if unlock, ok := val.(chan struct{}); ok && unlock != nil {
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// Wait until unfrozen.
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select {
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case <-unlock:
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case <-r.Context().Done():
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// if client canceled we don't need to wait here forever.
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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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pool, deadline := globalAPIConfig.getRequestsPool()
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if pool == nil {
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f.ServeHTTP(w, r)
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return
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}
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globalHTTPStats.addRequestsInQueue(1)
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if tc, ok := r.Context().Value(mcontext.ContextTraceKey).(*mcontext.TraceCtxt); ok {
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tc.FuncName = "s3.MaxClients"
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}
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deadlineTimer := time.NewTimer(deadline)
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defer deadlineTimer.Stop()
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select {
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case pool <- struct{}{}:
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defer func() { <-pool }()
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globalHTTPStats.addRequestsInQueue(-1)
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f.ServeHTTP(w, r)
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case <-deadlineTimer.C:
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// Send a http timeout message
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writeErrorResponse(r.Context(), w,
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errorCodes.ToAPIErr(ErrTooManyRequests),
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r.URL)
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globalHTTPStats.addRequestsInQueue(-1)
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return
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case <-r.Context().Done():
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// When the client disconnects before getting the S3 handler
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// status code response, set the status code to 499 so this request
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// will be properly audited and traced.
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w.WriteHeader(499)
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globalHTTPStats.addRequestsInQueue(-1)
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return
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}
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}
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}
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func (t *apiConfig) getReplicationOpts() replicationPoolOpts {
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t.mu.RLock()
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defer t.mu.RUnlock()
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if t.replicationPriority == "" {
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return replicationPoolOpts{
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Priority: "auto",
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MaxWorkers: WorkerMaxLimit,
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}
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}
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return replicationPoolOpts{
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Priority: t.replicationPriority,
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MaxWorkers: t.replicationMaxWorkers,
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}
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}
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func (t *apiConfig) getTransitionWorkers() int {
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t.mu.RLock()
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defer t.mu.RUnlock()
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if t.transitionWorkers <= 0 {
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return runtime.GOMAXPROCS(0) / 2
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}
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return t.transitionWorkers
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}
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func (t *apiConfig) isSyncEventsEnabled() bool {
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t.mu.RLock()
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defer t.mu.RUnlock()
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return t.syncEvents
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}
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func (t *apiConfig) getObjectMaxVersions() int64 {
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t.mu.RLock()
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defer t.mu.RUnlock()
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if t.objectMaxVersions <= 0 {
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// defaults to 'IntMax' when unset.
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return math.MaxInt64
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}
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return t.objectMaxVersions
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}
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