add project names/filenames/values to rendering errors (#2499)

CHANGELOG.md

@@ -1,5 +1,9 @@
 ## dbt 0.17.0 (Release TBD)
 
+### Fixes
+- Added filename, project, and the value that failed to render to the exception raised when rendering fails. ([#2499](https:/fishtown-analytics/dbt/issues/2499), [#2501](https:/fishtown-analytics/dbt/pull/2501))
+
+
 ### Under the hood
 - Lock protobufs to the last version that had fully functioning releases on all supported platforms ([#2490](https:/fishtown-analytics/dbt/issues/2490), [#2491](https:/fishtown-analytics/dbt/pull/2491))
 

core/dbt/config/renderer.py

@@ -1,9 +1,10 @@
 from typing import Dict, Any, Tuple, Optional, Union
 
-from dbt.clients.jinja import get_rendered
+from dbt.clients.jinja import get_rendered, catch_jinja
 
-from dbt.exceptions import DbtProjectError
-from dbt.exceptions import RecursionException
+from dbt.exceptions import (
+ DbtProjectError, CompilationException, RecursionException
+)
 from dbt.node_types import NodeType
 from dbt.utils import deep_map
 
@@ -35,7 +36,12 @@ def render_value(
  # if it wasn't read as a string, ignore it
  if not isinstance(value, str):
  return value
- return get_rendered(value, self.context, native=True)
+ try:
+ with catch_jinja():
+ return get_rendered(value, self.context, native=True)
+ except CompilationException as exc:
+ msg = f'Could not render {value}: {exc.msg}'
+ raise CompilationException(msg) from exc
 
  def render_data(
  self, data: Dict[str, Any]

core/dbt/parser/schemas.py

@@ -507,7 +507,14 @@ def parse_file(self, block: FileBlock) -> None:
  # mark the file as seen, even if there are no macros in it
  self.results.get_file(block.file)
  if dct:
- dct = self.raw_renderer.render_data(dct)
+ try:
+ dct = self.raw_renderer.render_data(dct)
+ except CompilationException as exc:
+ raise CompilationException(
+ f'Failed to render {block.path.original_file_path} from '
+ f'project {self.project.project_name}: {exc}'
+ ) from exc
+
  yaml_block = YamlBlock.from_file_block(block, dct)
 
  self._parse_format_version(yaml_block)