Add loaded plugins to log

2 files changed, 32 insertions, 1 deletions

diff --git a/buildstream/_frontend/widget.py b/buildstream/_frontend/widget.py
index a51915038..c04cdafb7 100644
--- a/buildstream/_frontend/widget.py
+++ b/buildstream/_frontend/widget.py
@@ -441,6 +441,10 @@ class LogLine(Widget):
         text += self.format_values(values)
         text += '\n'
 
+        # Plugins
+        text += self.format_plugins(pipeline.element_factory.loaded_dependencies,
+                                    pipeline.source_factory.loaded_dependencies)
+
         # Pipeline state
         text += self.content_profile.fmt("Pipeline\n", bold=True)
         if deps is None:
@@ -505,6 +509,28 @@ class LogLine(Widget):
         if log_file:
             click.echo(text, file=log_file, color=False, nl=False)
 
+    def format_plugins(self, element_plugins, source_plugins):
+        text = ""
+
+        if not (element_plugins or source_plugins):
+            return text
+
+        text += self.content_profile.fmt("Loaded Plugins\n", bold=True)
+
+        if element_plugins:
+            text += self.format_profile.fmt("  Element Plugins\n")
+            for plugin in element_plugins:
+                text += self.content_profile.fmt("    - {}\n".format(plugin))
+
+        if source_plugins:
+            text += self.format_profile.fmt("  Source Plugins\n")
+            for plugin in source_plugins:
+                text += self.content_profile.fmt("    - {}\n".format(plugin))
+
+        text += '\n'
+
+        return text
+
     def format_values(self, values, style_value=True):
         text = ''
         max_key_len = 0
diff --git a/buildstream/_plugincontext.py b/buildstream/_plugincontext.py
index 96ee2e2c5..e725211a9 100644
--- a/buildstream/_plugincontext.py
+++ b/buildstream/_plugincontext.py
@@ -42,11 +42,13 @@ from . import utils
 #
 class PluginContext():
 
-    def __init__(self, plugin_base, base_type, searchpath=None):
+    def __init__(self, plugin_base, base_type, searchpath=None, dependencies=None):
 
         if not searchpath:
             raise PluginError("Cannot create plugin context without any searchpath")
 
+        self.dependencies = dependencies
+        self.loaded_dependencies = []
         self.base_type = base_type  # The base class plugins derive from
         self.types = {}             # Plugin type lookup table by kind
 
@@ -107,6 +109,9 @@ class PluginContext():
                                   .format(self.base_type.__name__, kind))
             self.types[kind] = self.load_plugin(source, package, defaults)
 
+            if dist:
+                self.loaded_dependencies.append(kind)
+
         return self.types[kind]
 
     def load_plugin(self, source, kind, defaults):