CR: make map access and cast safe in rails detector

pkg/collector/corechecks/servicediscovery/usm/ruby.go

@@ -35,7 +35,16 @@ func newRailsDetector(ctx DetectionContext) detector {
 // project is created. This file should contain a `module` declaration with the
 // application name.
 func (r railsDetector) detect(_ []string) (ServiceMetadata, bool) {
- proc := r.ctx.contextMap[ServiceProc].(*process.Process)
+ var proc *process.Process
+
+ if procEntry, ok := r.ctx.ContextMap[ServiceProc]; ok {
+ if p, ok := procEntry.(*process.Process); ok {
+ proc = p
+ } else {
+ log.Error("could not get process object in rails detector")
+ }
+ }
+
  cwd, err := proc.Cwd()
  if err != nil {
  log.Debugf("could not get cwd of process: %s", err)