Tags for undeploy (#734)

```
  --include-tags TEXT             Only include requests with matching tags
                                  (comma-separated).
  --exclude-tags TEXT             Exclude requests with matching tags (comma-
                                  separated).
```

Reviewed-on: #734
Co-authored-by: Thomas E Lackey <telackey@bozemanpass.com>
Co-committed-by: Thomas E Lackey <telackey@bozemanpass.com>

stack_orchestrator/deploy/webapp/deploy_webapp_from_registry.py

@@ -29,7 +29,7 @@ from stack_orchestrator.deploy.webapp.util import (LaconicRegistryClient,
                                                    build_container_image, push_container_image,
                                                    file_hash, deploy_to_k8s, publish_deployment,
                                                    hostname_for_deployment_request, generate_hostname_for_app,
-                                                   match_owner)
+                                                   match_owner, skip_by_tag)
 
 
 def process_app_deployment_request(
@@ -222,17 +222,6 @@ def command(ctx, kube_config, laconic_config, image_registry, deployment_parent_
             dump_known_requests(state_file, requests)
         return
 
-    def skip_by_tag(r):
-        for tag in exclude_tags:
-            if tag and r.attributes.tags and tag in r.attributes.tags:
-                return True
-
-        for tag in include_tags:
-            if tag and (not r.attributes.tags or tag not in r.attributes.tags):
-                return True
-
-        return False
-
     previous_requests = load_known_requests(state_file)
 
     # Collapse related requests.
@@ -256,7 +245,7 @@ def command(ctx, kube_config, laconic_config, image_registry, deployment_parent_
             print("Ignoring request %s, it has been superseded." % r.id)
             continue
 
-        if skip_by_tag(r):
+        if skip_by_tag(r, include_tags, exclude_tags):
             print("Skipping request %s, filtered by tag (include %s, exclude %s, present %s)" % (r.id,
                                                                                                  include_tags,
                                                                                                  exclude_tags,

stack_orchestrator/deploy/webapp/undeploy_webapp_from_registry.py

@@ -20,7 +20,7 @@ import sys
 
 import click
 
-from stack_orchestrator.deploy.webapp.util import LaconicRegistryClient, match_owner
+from stack_orchestrator.deploy.webapp.util import LaconicRegistryClient, match_owner, skip_by_tag
 
 
 def process_app_removal_request(ctx,
@@ -107,10 +107,12 @@ def dump_known_requests(filename, requests):
 @click.option("--delete-names/--preserve-names", help="Delete all names associated with removed deployments.", default=True)
 @click.option("--delete-volumes/--preserve-volumes", default=True, help="delete data volumes")
 @click.option("--dry-run", help="Don't do anything, just report what would be done.", is_flag=True)
+@click.option("--include-tags", help="Only include requests with matching tags (comma-separated).", default="")
+@click.option("--exclude-tags", help="Exclude requests with matching tags (comma-separated).", default="")
 @click.pass_context
 def command(ctx, laconic_config, deployment_parent_dir,
             request_id, discover, state_file, only_update_state,
-            delete_names, delete_volumes, dry_run):
+            delete_names, delete_volumes, dry_run, include_tags, exclude_tags):
     if request_id and discover:
         print("Cannot specify both --request-id and --discover", file=sys.stderr)
         sys.exit(2)
@@ -123,6 +125,10 @@ def command(ctx, laconic_config, deployment_parent_dir,
         print("--only-update-state requires --state-file", file=sys.stderr)
         sys.exit(2)
 
+    # Split CSV and clean up values.
+    include_tags = [tag.strip() for tag in include_tags.split(",") if tag]
+    exclude_tags = [tag.strip() for tag in exclude_tags.split(",") if tag]
+
     laconic = LaconicRegistryClient(laconic_config)
 
     # Find deployment removal requests.
@@ -155,10 +161,22 @@ def command(ctx, laconic_config, deployment_parent_dir,
             # TODO: should we handle CRNs?
             removals_by_deployment[r.attributes.deployment] = r
 
-    requests_to_execute = []
+    one_per_deployment = {}
     for r in requests:
         if not r.attributes.deployment:
             print(f"Skipping removal request {r.id} since it was a cancellation.")
+        elif r.attributes.deployment in one_per_deployment:
+            print(f"Skipping removal request {r.id} since it was superseded.")
+        else:
+            one_per_deployment[r.attributes.deployment] = r
+
+    requests_to_execute = []
+    for r in one_per_deployment.values():
+        if skip_by_tag(r, include_tags, exclude_tags):
+            print("Skipping removal request %s, filtered by tag (include %s, exclude %s, present %s)" % (r.id,
+                                                                                                         include_tags,
+                                                                                                         exclude_tags,
+                                                                                                         r.attributes.tags))
         elif r.id in removals_by_request:
             print(f"Found satisfied request for {r.id} at {removals_by_request[r.id].id}")
         elif r.attributes.deployment in removals_by_deployment:

stack_orchestrator/deploy/webapp/util.py

@@ -351,3 +351,15 @@ def generate_hostname_for_app(app):
     else:
         m.update(app.attributes.repository.encode())
     return "%s-%s" % (last_part, m.hexdigest()[0:10])
+
+
+def skip_by_tag(r, include_tags, exclude_tags):
+    for tag in exclude_tags:
+        if tag and r.attributes.tags and tag in r.attributes.tags:
+            return True
+
+    for tag in include_tags:
+        if tag and (not r.attributes.tags or tag not in r.attributes.tags):
+            return True
+
+    return False