Improve readability of logs related to problematic model names

We want people running dbt to be able to at a glance see warnings/errors
with running their project. In this case we are focused specifically on
errors/warnings in regards to model names containing spaces. Previously
we were only ever emitting the `warning_tag` in the message even if the
event itself was being emitted at an `ERROR` level. We now properly have
`[ERROR]` or `[WARNING]` in the message depending on the level. Unfortunately
we couldn't just look what level the event was being fired at, because that
information doesn't exist on the event itself.

Additionally, we're using events that base off of `DynamicEvents` which
unfortunately hard coded to `DEBUG`. Changing this would involve still
having a `level` property on the definition in `core_types.proto` and
then having `DynamicEvent`s look to `self.level` in the `level_tag`
method. Then we could change how firing events works based on the an
event's `level_tag` return value. This all sounds like a bit of tech
debt suited for PR, possibly multiple, and thus is not being done here.

core/dbt/events/core_types.proto

@@ -407,6 +407,7 @@ message ProjectFlagsMovedDeprecationMsg {
 message SpacesInModelNameDeprecation {
     string model_name = 1;
     string model_version = 2;
+    string level = 3;
 }
 
 message SpacesInModelNameDeprecationMsg {
@@ -418,6 +419,7 @@ message SpacesInModelNameDeprecationMsg {
 message TotalModelNamesWithSpacesDeprecation {
     int32 count_invalid_names = 1;
     bool show_debug_hint = 2;
+    string level = 3;
 }
 
 message TotalModelNamesWithSpacesDeprecationMsg {

core/dbt/events/types.py

@@ -1,7 +1,7 @@
 import json
 
 from dbt.constants import MAXIMUM_SEED_SIZE_NAME, PIN_PACKAGE_URL
-from dbt_common.ui import warning_tag, line_wrap_message, green, yellow, red
+from dbt_common.ui import error_tag, warning_tag, line_wrap_message, green, yellow, red
 from dbt_common.events.base_types import EventLevel
 from dbt_common.events.format import (
     format_fancy_output_line,
@@ -423,20 +423,31 @@ def message(self) -> str:
             f"Model `{self.model_name}{version}` has spaces in its name. This is deprecated and "
             "may cause errors when using dbt."
         )
-        return line_wrap_message(warning_tag(f"Deprecated functionality\n\n{description}"))
+
+        if self.level == EventLevel.ERROR.value:
+            description = error_tag(description)
+        elif self.level == EventLevel.WARN.value:
+            description = warning_tag(description)
+
+        return line_wrap_message(description)
 
 
 class TotalModelNamesWithSpacesDeprecation(DynamicLevel):
     def code(self) -> str:
         return "D015"
 
     def message(self) -> str:
-        description = f"Found {self.count_invalid_names} models with spaces in their names, which is deprecated. "
+        description = f"Found {self.count_invalid_names} models with spaces in their names, which is deprecated."
 
         if self.show_debug_hint:
             description += " Run again with `--debug` to see them all."
 
-        return line_wrap_message(warning_tag(f"Deprecated functionality\n\n{description}"))
+        if self.level == EventLevel.ERROR.value:
+            description = error_tag(description)
+        elif self.level == EventLevel.WARN.value:
+            description = warning_tag(description)
+
+        return line_wrap_message(description)
 
 
 # =======================================================

core/dbt/parser/manifest.py

@@ -647,6 +647,7 @@ def check_for_spaces_in_model_names(self):
                         SpacesInModelNameDeprecation(
                             model_name=node.name,
                             model_version=version_to_str(node.version),
+                            level=level.value,
                         ),
                         level=level,
                     )
@@ -657,6 +658,7 @@ def check_for_spaces_in_model_names(self):
                 TotalModelNamesWithSpacesDeprecation(
                     count_invalid_names=improper_model_names,
                     show_debug_hint=(not self.root_project.args.DEBUG),
+                    level=level.value,
                 ),
                 level=level,
             )

tests/functional/manifest_validations/test_check_for_spaces_in_model_names.py

@@ -65,7 +65,7 @@ def tests_debug_when_spaces_in_name(self, project) -> None:
             "Found 2 models with spaces in their names" in total_catcher.caught_events[0].info.msg
         )
         assert (
-            "Run again with\n`--debug` to see them all." in total_catcher.caught_events[0].info.msg
+            "Run again with `--debug` to see them all." in total_catcher.caught_events[0].info.msg
         )
 
         spaces_check_catcher = EventCatcher(SpacesInModelNameDeprecation)
@@ -75,7 +75,7 @@ def tests_debug_when_spaces_in_name(self, project) -> None:
         assert len(spaces_check_catcher.caught_events) == 2
         assert len(total_catcher.caught_events) == 1
         assert (
-            "Run again with\n`--debug` to see them all."
+            "Run again with `--debug` to see them all."
             not in total_catcher.caught_events[0].info.msg
         )