VictoriaMetrics/lib/promscrape/discovery/kuma/xds.go

56 lines
2.2 KiB
Go

package kuma
import (
"encoding/json"
"fmt"
)
// discoveryRequest represent xDS-requests for Kuma Service Mesh
// https://www.envoyproxy.io/docs/envoy/latest/api-v3/service/discovery/v3/discovery.proto#envoy-v3-api-msg-service-discovery-v3-discoveryrequest
type discoveryRequest struct {
VersionInfo string `json:"version_info,omitempty"`
Node discoveryRequestNode `json:"node,omitempty"`
ResourceNames []string `json:"resource_names,omitempty"`
TypeUrl string `json:"type_url,omitempty"`
ResponseNonce string `json:"response_nonce,omitempty"`
}
type discoveryRequestNode struct {
Id string `json:"id,omitempty"`
}
// discoveryResponse represent xDS-requests for Kuma Service Mesh
// https://www.envoyproxy.io/docs/envoy/latest/api-v3/service/discovery/v3/discovery.proto#envoy-v3-api-msg-service-discovery-v3-discoveryresponse
type discoveryResponse struct {
VersionInfo string `json:"version_info,omitempty"`
Resources []struct {
Mesh string `json:"mesh,omitempty"`
Service string `json:"service,omitempty"`
Targets []struct {
Name string `json:"name,omitempty"`
Scheme string `json:"scheme,omitempty"`
Address string `json:"address,omitempty"`
MetricsPath string `json:"metrics_path,omitempty"`
Labels map[string]string `json:"labels,omitempty"`
} `json:"targets,omitempty"`
Labels map[string]string `json:"labels,omitempty"`
} `json:"resources,omitempty"`
TypeUrl string `json:"type_url,omitempty"`
Nonce string `json:"nonce,omitempty"`
ControlPlane struct {
Identifier string `json:"identifier,omitempty"`
} `json:"control_plane,omitempty"`
}
func parseDiscoveryResponse(data []byte) (discoveryResponse, error) {
response := discoveryResponse{}
err := json.Unmarshal(data, &response)
if err != nil {
return discoveryResponse{}, fmt.Errorf("cannot parse kuma_sd api response, err: %w", err)
}
if response.TypeUrl != xdsResourceTypeUrl {
return discoveryResponse{}, fmt.Errorf("unexpected type_url in kuma_sd api response, expected: %s, got: %s", xdsResourceTypeUrl, response.TypeUrl)
}
return response, nil
}