Show all missing deps when publishing-bot has no listed dependencies

Before this, it only showed one dependency in the error message.

Also, replace godeps.json with go.mod in the error message.

Author: nikhita

hack/verify-publishing-bot.py

@@ -23,7 +23,7 @@
 import yaml
 
 
-def get_godeps_dependencies(rootdir, components):
+def get_gomod_dependencies(rootdir, components):
     all_dependencies = {}
     for component in components:
         with open(os.path.join(rootdir, component, "go.mod")) as f:
@@ -58,8 +58,9 @@ def main():
         components.append(component)
     components.sort()
 
-    godep_dependencies = get_godeps_dependencies(rootdir + '/staging/src/k8s.io/', components)
-    rules_dependencies = get_rules_dependencies(rootdir + "/staging/publishing/rules.yaml")
+    rules_file = "/staging/publishing/rules.yaml"
+    gomod_dependencies = get_gomod_dependencies(rootdir + '/staging/src/k8s.io/', components)
+    rules_dependencies = get_rules_dependencies(rootdir + rules_file)
 
     processed_repos = []
     for rule in rules_dependencies["rules"]:
@@ -70,10 +71,10 @@ def main():
             raise Exception("cannot find master source branch for destination %s" % rule["destination"])
 
         print("processing : %s" % rule["destination"])
-        if rule["destination"] not in godep_dependencies:
-            raise Exception("missing Godeps.json for %s" % rule["destination"])
+        if rule["destination"] not in gomod_dependencies:
+            raise Exception("missing go.mod for %s" % rule["destination"])
         processed_repos.append(rule["destination"])
-        for dep in set(godep_dependencies[rule["destination"]]):
+        for dep in set(gomod_dependencies[rule["destination"]]):
             found = False
             if "dependencies" in branch:
                 for dep2 in branch["dependencies"]:
@@ -84,12 +85,12 @@ def main():
                         found = True
             else:
                 raise Exception(
-                    "destination %s does not have any dependencies (looking for %s)" % (rule["destination"], dep))
+                    "Please add %s as dependencies under destination %s in %s" % (gomod_dependencies[rule["destination"]], rule["destination"], rules_file))
             if not found:
-                raise Exception("destination %s does not have dependency %s" % (rule["destination"], dep))
+                raise Exception("Please add %s as a dependency under destination %s in %s" % (dep, rule["destination"], rules_file))
             else:
                 print("  found dependency %s" % dep)
-    items = set(godep_dependencies.keys()) - set(processed_repos)
+    items = set(gomod_dependencies.keys()) - set(processed_repos)
     if len(items) > 0:
         raise Exception("missing rules for %s" % ','.join(str(s) for s in items))
     print("Done.")