Telemetry: track Sphinx extensions and html_theme variables

readthedocs/telemetry/collectors.py

@@ -1,6 +1,7 @@
 """Data collectors."""
 
 import json
+import os
 
 import dparse
 import structlog
@@ -89,8 +90,56 @@ def collect(self):
                 "all": all_apt_packages,
             },
         }
+        data["doctool"] = {
+            "name": self._get_doctool_name(),
+            "extensions": self._get_doctool_extensions(),
+            "theme": self._get_doctool_theme(),
+        }
         return data
 
+    def _get_doctool_name(self):
+        if self.config.sphinx:
+            return "sphinx"
+
+        if self.config.mkdocs:
+            return "mkdocs"
+
+        return "generic"
+
+    def _get_doctool_extensions(self):
+        if self._get_doctool_name() != "sphinx":
+            return []
+
+        code, stdout, _ = self.run(
+            "python",
+            "-c",
+            "import conf; import json; print(json.dumps(conf.extensions))",
+            cwd=os.path.join(
+                self.checkout_path,
+                os.path.dirname(self.config.sphinx.configuration),
+            ),
+        )
+        if code == 0 and stdout:
+            return self._safe_json_loads(stdout, [])
+        return []
+
+    def _get_doctool_theme(self):
+        if self._get_doctool_name() != "sphinx":
+            return []
+
+        code, stdout, _ = self.run(
+            "python",
+            "-c",
+            "import conf; import json; print(json.dumps(conf.html_theme))",
+            cwd=os.path.join(
+                self.checkout_path,
+                os.path.dirname(self.config.sphinx.configuration),
+            ),
+        )
+        if code == 0 and stdout:
+            return self._safe_json_loads(stdout, "")
+        return ""
+
     def _get_all_conda_packages(self):
         """
         Get all the packages installed by the user using conda.