feat: Add if condition(Conditional Resource Evaluation)

Author: derek10cloud

stackql_deploy/cmd/build.py

@@ -5,7 +5,7 @@
     run_ext_script,
     get_type
 )
-from ..lib.config import get_full_context
+from ..lib.config import get_full_context, render_value
 from ..lib.templating import get_queries
 from .base import StackQLBase
 
@@ -49,6 +49,20 @@ def run(self, dry_run, show_queries, on_failure):
             # get full context
             full_context = get_full_context(self.env, self.global_context, resource, self.logger)
 
+            # Check if the resource has an 'if' condition and evaluate it
+            if 'if' in resource:
+                condition = resource['if']
+                try:
+                    # Render the condition with the full context to resolve any template variables
+                    rendered_condition = render_value(self.env, condition, full_context, self.logger)
+                    # Evaluate the condition
+                    condition_result = eval(rendered_condition)
+                    if not condition_result:
+                        self.logger.info(f"skipping resource [{resource['name']}] due to condition: {condition}")
+                        continue
+                except Exception as e:
+                    catch_error_and_exit(f"error evaluating condition for resource [{resource['name']}]: {e}", self.logger)
+
             if type == 'script':
                 self.process_script_resource(resource, dry_run, full_context)
                 continue

stackql_deploy/cmd/teardown.py

@@ -3,7 +3,7 @@
     catch_error_and_exit,
     get_type
 )
-from ..lib.config import get_full_context
+from ..lib.config import get_full_context, render_value
 from ..lib.templating import get_queries
 from .base import StackQLBase
 
@@ -63,6 +63,19 @@ def run(self, dry_run, show_queries, on_failure):
             # get full context
             full_context = get_full_context(self.env, self.global_context, resource, self.logger)
 
+            # Check if the resource has an 'if' condition and evaluate it
+            if 'if' in resource:
+                condition = resource['if']
+                try:
+                    # Render the condition with the full context to resolve any template variables
+                    rendered_condition = render_value(self.env, condition, full_context, self.logger)
+                    # Evaluate the condition
+                    condition_result = eval(rendered_condition)
+                    if not condition_result:
+                        self.logger.info(f"skipping resource [{resource['name']}] due to condition: {condition}")
+                        continue
+                except Exception as e:
+                    catch_error_and_exit(f"error evaluating condition for resource [{resource['name']}]: {e}", self.logger)
             # add reverse export map variable to full context
             if 'exports' in resource:
                 for export in resource['exports']: