wings/server/resources.go

59 lines
1.9 KiB
Go

package server
import (
"sync"
"sync/atomic"
"github.com/pterodactyl/wings/environment"
"github.com/pterodactyl/wings/system"
)
// ResourceUsage defines the current resource usage for a given server instance. If a server is offline you
// should obviously expect memory and CPU usage to be 0. However, disk will always be returned
// since that is not dependent on the server being running to collect that data.
type ResourceUsage struct {
mu sync.RWMutex
// Embed the current environment stats into this server specific resource usage struct.
environment.Stats
// The current server status.
State *system.AtomicString `json:"state"`
// The current disk space being used by the server. This value is not guaranteed to be accurate
// at all times. It is "manually" set whenever server.Proc() is called. This is kind of just a
// hacky solution for now to avoid passing events all over the place.
Disk int64 `json:"disk_bytes"`
}
// Proc returns the current resource usage stats for the server instance. This returns
// a copy of the tracked resources, so making any changes to the response will not
// have the desired outcome for you most likely.
func (s *Server) Proc() ResourceUsage {
s.resources.mu.Lock()
defer s.resources.mu.Unlock()
// Store the updated disk usage when requesting process usage.
atomic.StoreInt64(&s.resources.Disk, s.Filesystem().CachedUsage())
//goland:noinspection GoVetCopyLock
return s.resources
}
// Reset resets the usages values to zero, used when a server is stopped to ensure we don't hold
// onto any values incorrectly.
func (ru *ResourceUsage) Reset() {
ru.mu.Lock()
defer ru.mu.Unlock()
ru.Memory = 0
ru.CpuAbsolute = 0
ru.Uptime = 0
ru.Network.TxBytes = 0
ru.Network.RxBytes = 0
}
func (s *Server) emitProcUsage() {
if err := s.Events().PublishJson(StatsEvent, s.Proc()); err != nil {
s.Log().WithField("error", err).Warn("error while emitting server resource usage to listeners")
}
}