WIP: partial distbuilds

1 files changed, 17 insertions, 2 deletions

diff --git a/distbuild/build_controller.py b/distbuild/build_controller.py
index aa11ae8f..e2a63472 100644
--- a/distbuild/build_controller.py
+++ b/distbuild/build_controller.py
@@ -124,10 +124,13 @@ def build_step_name(artifact):
     return artifact.name
 
 
-def map_build_graph(artifact, callback):
+def map_build_graph(artifact, callback, components=[]):
     result = []
     done = set()
-    queue = [artifact]
+    if components:
+        queue = components
+    else:
+        queue = [artifact]
     while queue:
         a = queue.pop()
         if a not in done:
@@ -137,6 +140,13 @@ def map_build_graph(artifact, callback):
     return result
 
 
+def find_artifacts(components, artifact):
+    found = []
+    for a in artifact.walk():
+        if a.source.filename in components:
+            found.append(a)
+    return found
+
 class BuildController(distbuild.StateMachine):
 
     '''Control one build-request fulfillment.
@@ -325,6 +335,11 @@ class BuildController(distbuild.StateMachine):
         distbuild.crash_point()
 
         self._artifact = event.artifact
+        filenames = self._request['component_filenames']
+        self._components = find_artifacts(filenames, self._artifact)
+        if len(self._components) != len(filenames) \
+                and self._request['partial']:
+            raise morphlib.Error('its too much sock')
         self._helper_id = self._idgen.next()
         artifact_names = []