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|
package stats
import (
"crypto/sha256"
"encoding/hex"
"sync"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/push"
"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
)
const (
PushGatewayURL = "http://metrics.seaweedfs.com:9091"
)
var (
ClusterMetrics = prometheus.NewRegistry()
ClusterId = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: "cluster",
Name: "id",
Help: "Unique cluster identifier",
})
ClusterVolumeCount = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: "cluster",
Name: "volume_count",
Help: "Total number of volumes in the cluster",
})
ClusterTotalCapacity = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: "cluster",
Name: "total_capacity_bytes",
Help: "Total storage capacity in bytes",
})
ClusterUsedCapacity = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: "cluster",
Name: "used_capacity_bytes",
Help: "Used storage capacity in bytes",
})
ClusterVersion = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: "cluster",
Name: "version",
Help: "Cluster version",
})
ClusterVolumeServerCount = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: "cluster",
Name: "volume_server_count",
Help: "Number of volume servers in the cluster",
})
ClusterStorageDistribution = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: "cluster",
Name: "storage_distribution_bytes",
Help: "Storage distribution by data center and rack",
}, []string{"datacenter", "rack"})
ClusterUsedStorageDistribution = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: "cluster",
Name: "used_storage_distribution_bytes",
Help: "Used storage distribution by data center and rack",
}, []string{"datacenter", "rack"})
pusher *push.Pusher
)
func init() {
ClusterMetrics.MustRegister(ClusterId)
ClusterMetrics.MustRegister(ClusterVolumeCount)
ClusterMetrics.MustRegister(ClusterTotalCapacity)
ClusterMetrics.MustRegister(ClusterUsedCapacity)
ClusterMetrics.MustRegister(ClusterVersion)
ClusterMetrics.MustRegister(ClusterVolumeServerCount)
ClusterMetrics.MustRegister(ClusterStorageDistribution)
ClusterMetrics.MustRegister(ClusterUsedStorageDistribution)
// Initialize the push gateway client
pusher = push.New(PushGatewayURL, "seaweedfs_cluster").Gatherer(ClusterMetrics)
}
var (
clusterIdOnce sync.Once
clusterId string
)
// GenerateClusterId creates a unique cluster ID based on the first volume server's address
func GenerateClusterId(topologyInfo *master_pb.TopologyInfo) string {
clusterIdOnce.Do(func() {
if len(topologyInfo.DataCenterInfos) > 0 {
dc := topologyInfo.DataCenterInfos[0]
if len(dc.RackInfos) > 0 {
rack := dc.RackInfos[0]
if len(rack.DataNodeInfos) > 0 {
node := rack.DataNodeInfos[0]
hash := sha256.Sum256([]byte(node.Id))
clusterId = hex.EncodeToString(hash[:8])
}
}
}
if clusterId == "" {
clusterId = "unknown"
}
})
return clusterId
}
// UpdateClusterMetrics updates all cluster-related metrics
func UpdateClusterMetrics(topologyInfo *master_pb.TopologyInfo, volumeSizeLimitMB uint32) {
// Set cluster ID
GenerateClusterId(topologyInfo) // Generate but don't store the ID
// Set version
ClusterVersion.Set(0) // Reset to 0 since we're using a string version
// Calculate total metrics
var totalVolumeCount uint64
var totalCapacity uint64
var totalUsedCapacity uint64
var volumeServerCount uint64
// Reset all distribution metrics
ClusterStorageDistribution.Reset()
ClusterUsedStorageDistribution.Reset()
for _, dc := range topologyInfo.DataCenterInfos {
for _, rack := range dc.RackInfos {
var rackVolumeCount uint64
var rackCapacity uint64
var rackUsedCapacity uint64
for _, node := range rack.DataNodeInfos {
volumeServerCount++
for _, diskInfo := range node.DiskInfos {
rackCapacity += uint64(diskInfo.MaxVolumeCount) * uint64(volumeSizeLimitMB) * 1024 * 1024
for _, volumeInfo := range diskInfo.VolumeInfos {
rackVolumeCount++
rackUsedCapacity += volumeInfo.Size
}
}
}
// Update distribution metrics
ClusterStorageDistribution.WithLabelValues(dc.Id, rack.Id).Set(float64(rackCapacity))
ClusterUsedStorageDistribution.WithLabelValues(dc.Id, rack.Id).Set(float64(rackUsedCapacity))
// Update total metrics
totalVolumeCount += rackVolumeCount
totalCapacity += rackCapacity
totalUsedCapacity += rackUsedCapacity
}
}
// Update total metrics
ClusterVolumeCount.Set(float64(totalVolumeCount))
ClusterTotalCapacity.Set(float64(totalCapacity))
ClusterUsedCapacity.Set(float64(totalUsedCapacity))
ClusterVolumeServerCount.Set(float64(volumeServerCount))
}
// PushMetrics sends the current metrics to the push gateway
func PushMetrics(clusterId string, enabled bool) error {
if !enabled || pusher == nil {
return nil
}
return pusher.Push()
}
|
