Improved graphs, signalling if an action can run

orchestra/actions/action.py

 from collections import OrderedDict
-from loguru import logger
 from typing import Set
 
+from loguru import logger
+
 from .util import run_script
 
 
@@ -56,6 +57,10 @@ class Action:
         """Returns true if the action is satisfied, false if it needs to run."""
         raise NotImplementedError()
 
+    def can_run(self):
+        """Returns true if the action can be run (i.e. all its dependencies are satisfied)"""
+        return all(d.is_satisfied() for d in self.dependencies)
+
     @property
     def environment(self) -> OrderedDict:
         """Returns additional environment variables provided to the script to be run"""

orchestra/cmds/graph.py

@@ -4,7 +4,8 @@ from ..model.configuration import Configuration
 def install_subcommand(sub_argparser):
     cmd_parser = sub_argparser.add_parser("graph", handler=handle_graph)
     cmd_parser.add_argument("component", nargs="?")
-    cmd_parser.add_argument("--all-builds", action="store_true", help="Include all builds instead of only the default one.")
+    cmd_parser.add_argument("--all-builds", action="store_true",
+                            help="Include all builds instead of only the default one.")
 
 
 def handle_graph(args, config: Configuration):
@@ -32,7 +33,13 @@ def print_dependencies(actions):
         if action in already_visited_actions:
             return
 
-        color = "green" if action.is_satisfied(recursively=True) else "red"
+        if action.is_satisfied(recursively=True):
+            color = "green"
+        elif action.can_run():
+            color = "orange"
+        else:
+            color = "red"
+
         rows.add(f'  "{action.name_for_graph}"[ shape=box, style=filled, color={color} ];')
         for d in action.dependencies:
             rows.add(f'  "{d.name_for_graph}" -> "{action.name_for_graph}";')