[API Replay] Fail fast by default

Add a --ignore-errors CLI options to preserve the current behaviour
where API replays completes all operations and then reports errors.

When --ignore-errors is not set, API replay will fail and quit
at the first error.

Also fixes help string for enable_barbican option.

Change-Id: Ic2f6f89060f26292b017b2b3defb488452ec1cb7

vmware_nsx/api_replay/cli.py

@@ -64,7 +64,8 @@ class ApiReplayCli(object):
             vif_ids_map=args.vif_ids_map,
             logfile=args.logfile,
             max_retry=args.max_retry,
-            cert_file=args.cert_file)
+            cert_file=args.cert_file,
+            ignore_errors=args.ignore_errors)
 
     def _setup_argparse(self):
         parser = argparse.ArgumentParser()
@@ -206,7 +207,12 @@ class ApiReplayCli(object):
             "--enable-barbican",
             default=False,
             action='store_true',
-            help="Meh")
+            help="Enable barbican connection for Octavia certificates")
+        parser.add_argument(
+            "--ignore-errors",
+            action='store_true',
+            default=False,
+            help="Continuing executing API replay even upon errors")
 
         # NOTE: this will return an error message if any of the
         # require options are missing.

vmware_nsx/api_replay/client.py

@@ -60,7 +60,7 @@ class ApiReplayClient(utils.PrepareObjectForMigration):
                  octavia_os_tenant_name, octavia_os_tenant_domain_id,
                  octavia_os_password, octavia_os_auth_url,
                  neutron_conf, ext_net_map, net_vni_map, int_vni_map,
-                 vif_ids_map, logfile, max_retry, cert_file):
+                 vif_ids_map, logfile, max_retry, cert_file, ignore_errors):
 
         # Init config and logging
         if neutron_conf:
@@ -170,6 +170,7 @@ class ApiReplayClient(utils.PrepareObjectForMigration):
 
         self.n_errors = 0
         self.errors = []
+        self.ignore_errors = ignore_errors
 
         LOG.info("Starting NSX migration to %s.", self.dest_plugin)
         # Migrate all the objects
@@ -279,8 +280,11 @@ class ApiReplayClient(utils.PrepareObjectForMigration):
         return False
 
     def add_error(self, msg):
-        self.n_errors = self.n_errors + 1
         LOG.error(msg)
+        if not self.ignore_errors:
+            LOG.error("Error occurred during API replay: exiting")
+            sys.exit(1)
+        self.n_errors = self.n_errors + 1
         self.errors.append(msg)
 
     def migrate_quotas(self):