how to add tls config to a http probe using a go client ? #999

kssahazeer · 2025-02-12T17:47:48Z

kssahazeer
Feb 12, 2025

Adding tls config in http probe, tying cloudprober via golang client
sample example

	tlsConfig := tlsConfig.TLSConfig{
		ServerName: &serverName,
	}
	disableCertValidation := true
	httpProbeConfig = httpconfig.ProbeConf{
		Port: &port,
		LatencyBreakdown: []httpconfig.ProbeConf_LatencyBreakdown{
			httpconfig.ProbeConf_ALL_STAGES,
		},
		TlsConfig:             &tlsConfig,
		DisableCertValidation: &disableCertValidation,
	}

since tlsconfig is internal and golang dosen't support importing internal directory tlsConfig "github.com/cloudprober/cloudprober/internal/tlsconfig/proto" is there any workaround for this ?

Answered by manugarg

Feb 13, 2025

One not so great workaround is to build the whole config in text/json and then unmarshal it into protobuf.

You could add Go template based config templates like this:

probe {
 ...
 http_probe {
   port: {{.Port}}
   tls_config {
     server_name: "{{.ServerName}}"
   }
  ...
}

Build text format config from this template and your data.
Unmarshal the textconfig into ProbeDef.

This is similar to what cloudprober binary does:

cloudprober/config/config.go

Line 145 in 47ff806

     func processConfigText(configStr, configFormat string, tmplData map[string]any, m protoreflect.ProtoMessage, l *logger.Logger) (string, error) {  

 

View full answer

manugarg · 2025-02-13T21:12:29Z

manugarg
Feb 13, 2025
Maintainer

One not so great workaround is to build the whole config in text/json and then unmarshal it into protobuf.

You could add Go template based config templates like this:

probe {
 ...
 http_probe {
   port: {{.Port}}
   tls_config {
     server_name: "{{.ServerName}}"
   }
  ...
}

Build text format config from this template and your data.
Unmarshal the textconfig into ProbeDef.

This is similar to what cloudprober binary does:

cloudprober/config/config.go

Line 145 in 47ff806

    
           func processConfigText(configStr, configFormat string, tmplData map[string]any, m protoreflect.ProtoMessage, l *logger.Logger) (string, error) {

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manugarg Feb 13, 2025 Maintainer

kssahazeer
Feb 12, 2025

manugarg
Feb 13, 2025
Maintainer