Weathertop: Add --language flag to deploy.py runner.

.tools/test/DEPLOYMENT.md

@@ -25,14 +25,15 @@ python -m venv .venv && source .venv/bin/activate && pip install -r requirements
 #### Command Syntax
 
 ```bash
-python stacks/deploy.py --type <deployment_type>
+cd stacks ; python deploy.py <stack>
 ```
 
-Replace `<deployment_type>` with one of the supported types:
+Replace `<stack>` with one of the supported stacks:
 
 - `admin`: Deploys admin-specific resources.
 - `images`: Deploys image-related resources.
 - `plugin`: Deploys plugin-specific resources.
+  - To deploy only a specific language's plugin, pass `--language <language>` where language is an account in ./stacks/config/targets.yaml.
 
 #### Additional Notes
 

.tools/test/stacks/deploy.py

@@ -6,7 +6,6 @@
 import os
 import yaml
 import time
-import logging
 import re
 
 
@@ -31,9 +30,12 @@ def run_shell_command(command, env_vars=None):
     try:
         output = subprocess.check_output(command, stderr=subprocess.STDOUT, env=env)
         print(f"Command output: {output.decode()}")
-    except Exception as e:
+    except subprocess.CalledProcessError as e:
         print(f"Error executing command: {e.output.decode()}")
         raise
+    except Exception as e:
+        print(f"Exception executing command: {e!r}")
+        raise
 
 
 def validate_alphanumeric(value, name):
@@ -96,10 +98,13 @@ def deploy_resources(account_id, account_name, dir, lang="typescript"):
 
 
 def main():
-    parser = argparse.ArgumentParser(description="admin, images, or plugin flag.")
+    parser = argparse.ArgumentParser(description="admin, images, or plugin stack.")
     parser.add_argument("type", choices=["admin", "images", "plugin"])
+    parser.add_argument("--language")
     args = parser.parse_args()
 
+    accounts = None
+
     if args.type in {"admin", "images"}:
         try:
             with open("config/resources.yaml", "r") as file:
@@ -118,8 +123,16 @@ def main():
                 accounts = yaml.safe_load(file)
         except Exception as e:
             print(f"Failed to read config data: \n{e}")
+
+    if accounts is None:
+        raise ValueError(f"Could not load accounts for stack {args.type}")
+
+    if args.language:
+        items = [(args.language, accounts[args.language])]
+    else:
+        items = accounts.items()
 
-    for account_name, account_info in accounts.items():
+    for account_name, account_info in items:
         print(
             f"Reading from account {account_name} with ID {account_info['account_id']}"
         )