consul/troubleshoot/stats.go

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2023-02-02 22:24:18 +00:00
package troubleshoot
import (
"encoding/json"
"fmt"
envoy_admin_v3 "github.com/envoyproxy/go-control-plane/envoy/admin/v3"
)
type statsJson struct {
Stats []simpleMetric `json:"stats"`
}
type simpleMetric struct {
Value int64 `json:"value,omitempty"`
Name string `json:"name,omitempty"`
}
func (t *Troubleshoot) getEnvoyStats(filter string) ([]*envoy_admin_v3.SimpleMetric, error) {
var resultErr error
jsonRaw, err := t.request(fmt.Sprintf("stats?format=json&filter=%s&type=Counters", filter))
if err != nil {
return nil, fmt.Errorf("error in requesting envoy Admin API /stats endpoint: %w", err)
}
var rawStats statsJson
err = json.Unmarshal(jsonRaw, &rawStats)
if err != nil {
return nil, fmt.Errorf("could not unmarshal /stats response: %w", err)
}
stats := []*envoy_admin_v3.SimpleMetric{}
for _, s := range rawStats.Stats {
stat := &envoy_admin_v3.SimpleMetric{
Value: uint64(s.Value),
Name: s.Name,
}
stats = append(stats, stat)
}
t.envoyStats = stats
return stats, resultErr
}