Cache lib url check

fralau · Jul 25, 2021 · 0ac95dd · 0ac95dd
1 parent b3d84d1
commit 0ac95dd
Showing 1 changed file with 8 additions and 7 deletions.
diff --git a/mermaid2/plugin.py b/mermaid2/plugin.py
@@ -74,13 +74,14 @@ def mermaid_lib(self) -> str:
         """
         Provides the actual mermaid library used
         """
-        mermaid_version = self.config['version']
-        lib = self.extra_mermaid_lib or MERMAID_LIB % mermaid_version 
-        if not url_exists(lib):
-            raise FileNotFoundError("Cannot find Mermaid library: %s" %
-                                    lib)
-        return lib
-
+        if not hasattr(self, '_mermaid_lib'):
+            mermaid_version = self.config['version']
+            lib = self.extra_mermaid_lib or MERMAID_LIB % mermaid_version 
+            if not url_exists(lib):
+                raise FileNotFoundError("Cannot find Mermaid library: %s" %
+                                        lib)
+            self._mermaid_lib = lib
+        return self._mermaid_lib
 
     @property
     def activate_custom_loader(self) -> bool: