feat: enable conditional debug logging for k8s sidecar healthcheck container

Author: gallindic-flare

images/go_chains_hc/README.md

@@ -23,6 +23,7 @@ On each `/readyz` request, the sidecar runs a configurable set of checks against
 | `NODE_PASS` | no | — | RPC auth password |
 | `CHECKS` | no | `blockdownload` | Comma-separated list of checks to run (`blockdownload, txindex, connectioncount`) |
 | `MIN_CONNECTIONS` | no | `8` | Minimum peer connections required for the `connectioncount` check |
+| `DEBUG` | no | `false` | Enable debug logs |
 
 
 ### Running Locally

images/go_chains_hc/checks.go

@@ -59,7 +59,9 @@ func doRPC(ctx context.Context, client *http.Client, cfg Config, method string)
 		return nil, fmt.Errorf("read response: %w", err)
 	}
 
-	logger.Debug("rpc response", "method", method, "body", string(data))
+	if cfg.Debug {
+		logger.Debug("rpc response", "method", method, "body", string(data))
+	}
 
 	var envelope struct {
 		Result json.RawMessage `json:"result"`

images/go_chains_hc/main.go

@@ -18,6 +18,7 @@ type Config struct {
 	Checks         []string
 	Addr           string
 	MinConnections int
+	Debug          bool
 }
 
 const MIN_CONNECTIONS = 8
@@ -57,6 +58,7 @@ func configFromEnv() (Config, error) {
 		Checks:         checks,
 		Addr:           ":8080",
 		MinConnections: minConns,
+		Debug:          os.Getenv("DEBUG") == "true",
 	}, nil
 }