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feat: agent data cache to support connections to multiple hubs (#341)

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This commit is contained in:
henrygd
2025-03-04 16:25:45 -05:00
parent 681286eb4f
commit c4d8deb986
5 changed files with 150 additions and 23 deletions
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41
beszel/internal/agent/agent.go
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@@ -9,6 +9,7 @@ import (
"os"
"strings"
"sync"
"time"
"github.com/shirou/gopsutil/v4/common"
)
@@ -27,11 +28,13 @@ type Agent struct {
sensorsWhitelist map[string]struct{} // List of sensors to monitor
systemInfo system.Info // Host system info
gpuManager *GPUManager // Manages GPU data
cache *SessionCache // Cache for system stats based on primary session ID
}
func NewAgent() *Agent {
agent := &Agent{
fsStats: make(map[string]*system.FsStats),
cache: NewSessionCache(69 * time.Second),
}
agent.memCalc, _ = GetEnv("MEM_CALC")
@@ -63,7 +66,7 @@ func NewAgent() *Agent {
// Set sensors whitelist
if sensors, exists := GetEnv("SENSORS"); exists {
agent.sensorsWhitelist = make(map[string]struct{})
for _, sensor := range strings.Split(sensors, ",") {
for sensor := range strings.SplitSeq(sensors, ",") {
if sensor != "" {
agent.sensorsWhitelist[sensor] = struct{}{}
}
@@ -85,7 +88,7 @@ func NewAgent() *Agent {
// if debugging, print stats
if agent.debug {
slog.Debug("Stats", "data", agent.gatherStats())
slog.Debug("Stats", "data", agent.gatherStats(""))
}
return agent
@@ -100,29 +103,37 @@ func GetEnv(key string) (value string, exists bool) {
return os.LookupEnv(key)
}
func (a *Agent) gatherStats() system.CombinedData {
func (a *Agent) gatherStats(sessionID string) *system.CombinedData {
a.Lock()
defer a.Unlock()
slog.Debug("Getting stats")
systemData := system.CombinedData{
cachedData, ok := a.cache.Get(sessionID)
if ok {
slog.Debug("Cached stats", "session", sessionID)
return cachedData
}
*cachedData = system.CombinedData{
Stats: a.getSystemStats(),
Info: a.systemInfo,
}
slog.Debug("System stats", "data", systemData)
// add docker stats
slog.Debug("System stats", "data", cachedData)
if containerStats, err := a.dockerManager.getDockerStats(); err == nil {
systemData.Containers = containerStats
slog.Debug("Docker stats", "data", systemData.Containers)
cachedData.Containers = containerStats
slog.Debug("Docker stats", "data", cachedData.Containers)
} else {
slog.Debug("Error getting docker stats", "err", err)
slog.Debug("Docker stats", "err", err)
}
// add extra filesystems
systemData.Stats.ExtraFs = make(map[string]*system.FsStats)
cachedData.Stats.ExtraFs = make(map[string]*system.FsStats)
for name, stats := range a.fsStats {
if !stats.Root && stats.DiskTotal > 0 {
systemData.Stats.ExtraFs[name] = stats
cachedData.Stats.ExtraFs[name] = stats
}
}
slog.Debug("Extra filesystems", "data", systemData.Stats.ExtraFs)
return systemData
slog.Debug("Extra filesystems", "data", cachedData.Stats.ExtraFs)
a.cache.Set(sessionID, cachedData)
return cachedData
}