purge-secrets: skip instances with missing secrets

alakazam.py

@@ -1543,14 +1543,32 @@ def purge_secrets(recipes: Tuple[str], secret:str, noninteractive: bool) -> None
     print_all_apps(instance_apps)
     domains = list(zip(*sum(instance_apps.values(), [])))[1]
     if noninteractive or input(f"Do you really want to purge the secret {secret} for these apps? Type YES: ") == "YES":
+        purged, skipped, failed = [], [], []
         for domain in domains:
             logging.info(f'purge {domain}')
-            if not secret:
-                abra("app","secret" ,"rm", "-a", domain)
-                print(f"Secrets for {domain} purged")
-            else:
-                abra("app","secret" ,"rm", domain, secret)
-                print(f"Secret {secret} for {domain} purged")
+            try:
+                if not secret:
+                    abra("app", "secret", "rm", "-a", domain)
+                else:
+                    abra("app", "secret", "rm", domain, secret)
+            except RuntimeError as e:
+                if "doesn't exist on server" in str(e):
+                    logging.info(f'secret {secret} not set at {domain}')
+                    skipped.append(domain)
+                else:
+                    logging.warning(f'failed to purge secrets at {domain}: {e}')
+                    failed.append((domain, str(e).strip().splitlines()[-1]))
+                continue
+            purged.append(domain)
+        what = f"secret {secret}" if secret else "all secrets"
+        click.echo(f"✔  Purged {what} for {len(purged)}/{len(domains)} apps")
+        if skipped:
+            click.echo(f"⚠  Not set at {len(skipped)} apps: {', '.join(skipped)}")
+        if failed:
+            click.echo(f"✖  Failed at {len(failed)} apps:")
+            for domain, msg in failed:
+                click.echo(f"    {domain}: {msg}")
+            raise SystemExit(1)
 
 @cli.command()
 @click.option('recipes', '-r', '--recipe', multiple=True, metavar='<RecipeName>', help='Filter for selcted recipes, this option can be specified multiple times.')