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node_state.go
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// Package cos provides common low-level types and utilities for all aistore projects
/*
* Copyright (c) 2018-2024, NVIDIA CORPORATION. All rights reserved.
*/
package cos
import (
"fmt"
"os"
"github.com/NVIDIA/aistore/cmn/debug"
)
type NodeStateFlags BitFlags
const NodeAlerts = "state.flags"
const (
VoteInProgress = NodeStateFlags(1 << iota) // warning
ClusterStarted // info: (primary: cluster-started | all other nodes: joined-cluster)
NodeStarted // info: (started; possibly, not joined yet)
Rebalancing // warning
RebalanceInterrupted // warning
Resilvering // warning
ResilverInterrupted // warning
NodeRestarted // warning (powercycle, crash)
OOS // out of space; red alert (see IsRed below)
OOM // out of memory; red alert
MaintenanceMode // warning
LowCapacity // (used > high); warning: OOS possible soon..
LowMemory // ditto OOM
DiskFault // red
NoMountpaths // red: (reserved, not used)
NumGoroutines // red
CertWillSoonExpire // warning X.509
CertificateExpired // red --/--
CertificateInvalid // red --/--
KeepAliveErrors // warning (new keep-alive errors during the last 5m)
OOCPU // out of CPU; red
LowCPU // warning
)
func (f NodeStateFlags) IsOK() bool { return f == NodeStarted|ClusterStarted }
func (f NodeStateFlags) IsRed() bool {
return f.IsAnySet(OOS | OOM | OOCPU | DiskFault | NoMountpaths | NumGoroutines | CertificateExpired)
}
func (f NodeStateFlags) IsWarn() bool {
return f.IsAnySet(Rebalancing | RebalanceInterrupted | Resilvering | ResilverInterrupted | NodeRestarted | MaintenanceMode |
LowCapacity | LowMemory | LowCPU | CertWillSoonExpire)
}
func (f NodeStateFlags) IsSet(flag NodeStateFlags) bool { return BitFlags(f).IsSet(BitFlags(flag)) }
func (f NodeStateFlags) IsAnySet(flag NodeStateFlags) bool {
return BitFlags(f).IsAnySet(BitFlags(flag))
}
func (f NodeStateFlags) Set(flags NodeStateFlags) NodeStateFlags {
return NodeStateFlags(BitFlags(f).Set(BitFlags(flags)))
}
func (f NodeStateFlags) Clear(flags NodeStateFlags) NodeStateFlags {
return NodeStateFlags(BitFlags(f).Clear(BitFlags(flags)))
}
func (f NodeStateFlags) String() string {
if f.IsOK() {
return "ok"
}
sb := make([]string, 0, 4)
if f&VoteInProgress == VoteInProgress {
sb = append(sb, "vote-in-progress")
}
if f&ClusterStarted == 0 {
// NOTE not set when:
// - primary: cluster-started
// - all other nodes: joined-cluster
// See also: IsOK() above
sb = append(sb, "cluster-not-started-yet")
}
if f&NodeStarted == 0 {
sb = append(sb, "node-not-started-yet")
}
if f&Rebalancing == Rebalancing {
sb = append(sb, "rebalancing")
}
if f&RebalanceInterrupted == RebalanceInterrupted {
sb = append(sb, "rebalance-interrupted")
}
if f&Resilvering == Resilvering {
sb = append(sb, "resilvering")
}
if f&ResilverInterrupted == ResilverInterrupted {
sb = append(sb, "resilver-interrupted")
}
if f&NodeRestarted == NodeRestarted {
sb = append(sb, "restarted")
}
if f&OOS == OOS {
sb = append(sb, "OOS")
}
if f&OOM == OOM {
sb = append(sb, "OOM")
}
if f&MaintenanceMode == MaintenanceMode {
sb = append(sb, "in-maintenance-mode")
}
if f&LowCapacity == LowCapacity {
sb = append(sb, "low-usable-capacity")
}
if f&LowMemory == LowMemory {
sb = append(sb, "low-memory")
}
if f&DiskFault == DiskFault {
sb = append(sb, "disk-fault")
}
if f&NoMountpaths == NoMountpaths {
sb = append(sb, "no-mountpaths")
}
if f&NumGoroutines == NumGoroutines {
sb = append(sb, "high-number-of-goroutines")
}
if f&CertWillSoonExpire == CertWillSoonExpire {
sb = append(sb, "tls-cert-will-soon-expire")
}
if f&CertificateExpired == CertificateExpired {
sb = append(sb, "tls-cert-expired")
}
if f&CertificateInvalid == CertificateInvalid {
sb = append(sb, "tls-cert-invalid")
}
if f&KeepAliveErrors == KeepAliveErrors {
sb = append(sb, "keep-alive-errors")
}
if f&OOCPU == OOCPU {
sb = append(sb, "out-of-cpu")
}
if f&LowCPU == LowCPU {
sb = append(sb, "low-cpu")
}
l := len(sb)
switch l {
case 0:
v := int64(f)
err := fmt.Errorf("node state alerts: unknown flag %x (%b)", v, v)
fmt.Fprintln(os.Stderr, err)
debug.Assert(false, err)
return "-" // (teb.unknownVal)
case 1:
return sb[0]
default:
return fmt.Sprint(sb)
}
}
//
// NodeStateInfo
//
type (
NodeStateInfo struct {
Smap struct {
Primary struct {
PubURL string `json:"pub_url"`
CtrlURL string `json:"control_url"`
ID string `json:"id"`
}
UUID string `json:"uuid"`
Version int64 `json:"version,string"`
} `json:"smap"`
BMD struct {
UUID string `json:"uuid"`
Version int64 `json:"version,string"`
} `json:"bmd"`
RMD struct {
Version int64 `json:"version,string"`
} `json:"rmd"`
Config struct {
Version int64 `json:"version,string"`
} `json:"config"`
EtlMD struct {
Version int64 `json:"version,string"`
} `json:"etlmd"`
Flags NodeStateFlags `json:"flags"`
}
)
func (nsti *NodeStateInfo) String() string {
s, flags := fmt.Sprintf("%+v", *nsti), nsti.Flags.String()
if flags != "" {
s += ", flags: " + flags
}
return s
}
func (nsti *NodeStateInfo) SmapEqual(other *NodeStateInfo) (ok bool) {
if nsti == nil || other == nil {
return false
}
return nsti.Smap.Version == other.Smap.Version && nsti.Smap.Primary.ID == other.Smap.Primary.ID
}