add deprecation decorator

.changes/unreleased/Breaking Changes-20221205-141937.yaml

@@ -5,5 +5,4 @@ body: Cleaned up exceptions to directly raise in code.  Removed use of all excep
 time: 2022-12-05T14:19:37.863032-06:00
 custom:
   Author: emmyoop
-  Issue: "6339"
-  PR: "6347"
+  Issue: 6339 6393

core/dbt/context/exceptions_jinja.py

@@ -36,7 +36,9 @@ def missing_config(model, name) -> NoReturn:
 
 
 def missing_materialization(model, adapter_type) -> NoReturn:
-    raise MissingMaterialization(model=model, adapter_type=adapter_type)
+    raise MissingMaterialization(
+        materialization=model.config.materialized, adapter_type=adapter_type
+    )
 
 
 def missing_relation(relation, model=None) -> NoReturn:

core/dbt/events/types.proto

@@ -260,6 +260,15 @@ message ExposureNameDeprecation {
     string exposure = 2;
 }
 
+//D008
+message FunctionDeprecated {
+    EventInfo info = 1;
+    string function_name = 2;
+    string reason = 3;
+    string suggested_action = 4;
+    string version = 5;
+}
+
 // E - DB Adapter
 
 // E001

core/dbt/events/types.py

@@ -415,6 +415,22 @@ def message(self):
         return line_wrap_message(warning_tag(f"Deprecated functionality\n\n{description}"))
 
 
+@dataclass
+class FunctionDeprecated(WarnLevel, pt.FunctionDeprecated):
+    def code(self):
+        return "D008"
+
+    def message(self):
+        extra_reason = ""
+        if self.reason:
+            extra_reason = f"\n{self.reason}"
+        msg = (
+            f"`{self.function_name}` is deprecated and will be removed in dbt-core version {self.version}\n\n"
+            f"Adapter maintainers can resolve this deprecation by {self.suggested_action}. {extra_reason}"
+        )
+        return warning_tag(msg)
+
+
 # =======================================================
 # E - DB Adapter
 # =======================================================