receive broker stats

weed/mq/balancer/balancer.go

@@ -1,12 +1,18 @@
 package balancer
 
-import cmap "github.com/orcaman/concurrent-map"
+import (
+	"fmt"
+	cmap "github.com/orcaman/concurrent-map/v2"
+)
 
 type Balancer struct {
-	brokers cmap.ConcurrentMap[string, *BrokerStats]
+	Brokers cmap.ConcurrentMap[string, *BrokerStats]
 }
 type BrokerStats struct {
-	stats map[TopicPartition]*TopicPartitionStats
+	TopicPartitionCount int32
+	MessageCount        int64
+	BytesCount          int64
+	CpuUsagePercent     int32
 }
 
 type TopicPartition struct {
@@ -16,5 +22,22 @@ type TopicPartition struct {
 }
 
 type TopicPartitionStats struct {
-	Throughput int64
+	TopicPartition
+	Throughput          int64
+	ConsumerCount       int64
+	TopicPartitionCount int64
+}
+
+func NewBalancer() *Balancer {
+	return &Balancer{
+		Brokers: cmap.New[*BrokerStats](),
+	}
+}
+
+func NewBrokerStats() *BrokerStats {
+	return &BrokerStats{}
+}
+
+func (tp *TopicPartition) String() string {
+	return fmt.Sprintf("%v-%04d-%04d", tp.Topic, tp.RangeStart, tp.RangeStop)
 }