More debug to the god of debug

test/feature/conf/router_with_scram_backend.yaml

@@ -4,6 +4,7 @@ admin_console_port: '7432'
 grpc_api_port: '7000'
 router_mode: PROXY
 log_level: debug
+log_file: /var/log/spqr-router.log
 time_quantiles:
   - 0.75
 world_shard_fallback: true

test/feature/spqr_test.go

@@ -81,13 +81,32 @@ var postgresqlLogsToSave = map[string]string{
 	"/var/log/postgresql/postgresql-13-main.log": "postgresql.log",
 }
 
+var routerLogsToSave = map[string]string{
+	"/var/log/spqr-router.log": "router.log",
+}
+
 func (tctx *testContext) saveLogs(scenario string) error {
 	var errs []error
 	for _, service := range tctx.composer.Services() {
 		var logsToSave map[string]string
 		switch {
 		case strings.HasPrefix(service, spqrShardName):
 			logsToSave = postgresqlLogsToSave
+		case strings.HasPrefix(service, spqrRouterName):
+			for file := range routerLogsToSave {
+				remoteFile, err := tctx.composer.GetFile(service, file)
+				if err != nil {
+					errs = append(errs, err)
+					continue
+				}
+				content, err := io.ReadAll(remoteFile)
+				if err != nil {
+					errs = append(errs, err)
+					continue
+				}
+				fmt.Println("router logs:")
+				fmt.Println(string(content))
+			}
 		default:
 			continue
 		}