Scrub secret vars

- Scrub secret vars in RequiredVarNotFoundError
- Scrub secret vars in StateCheckVarsHash event
- Scrub secret vars in run results

.changes/unreleased/Features-20240307-153622.yaml

@@ -0,0 +1,6 @@
+kind: Features
+body: Support scrubbing secret vars
+time: 2024-03-07T15:36:22.754627+01:00
+custom:
+  Author: nielspardon
+  Issue: "7247"

core/dbt/artifacts/schemas/run/v5/run.py

@@ -1,10 +1,12 @@
 import threading
 from typing import Any, Optional, Iterable, Tuple, Sequence, Dict
 import agate
+import copy
 from dataclasses import dataclass, field
 from datetime import datetime
 
 
+from dbt.constants import SECRET_ENV_PREFIX
 from dbt.contracts.graph.nodes import CompiledNode
 from dbt.artifacts.schemas.base import (
     BaseArtifactMetadata,
@@ -20,6 +22,7 @@
     ExecutionResult,
 )
 from dbt_common.clients.system import write_json
+from dbt.exceptions import scrub_secrets
 
 
 @dataclass
@@ -120,7 +123,26 @@ def from_execution_results(
             dbt_schema_version=str(cls.dbt_schema_version),
             generated_at=generated_at,
         )
-        return cls(metadata=meta, results=processed_results, elapsed_time=elapsed_time, args=args)
+
+        secret_vars = [
+            v for k, v in args["vars"].items() if k.startswith(SECRET_ENV_PREFIX) and v.strip()
+        ]
+
+        scrubbed_args = copy.deepcopy(args)
+
+        # scrub secrets in invocation command
+        scrubbed_args["invocation_command"] = scrub_secrets(
+            scrubbed_args["invocation_command"], secret_vars
+        )
+
+        # scrub secrets in vars dict
+        scrubbed_args["vars"] = {
+            k: scrub_secrets(v, secret_vars) for k, v in scrubbed_args["vars"].items()
+        }
+
+        return cls(
+            metadata=meta, results=processed_results, elapsed_time=elapsed_time, args=scrubbed_args
+        )
 
     @classmethod
     def compatible_previous_versions(cls) -> Iterable[Tuple[str, int]]:

core/dbt/exceptions.py

@@ -18,6 +18,8 @@
 
 from dbt_common.dataclass_schema import ValidationError
 
+from dbt.constants import SECRET_ENV_PREFIX
+
 
 class ContractBreakingChangeError(DbtRuntimeError):
     CODE = 10016
@@ -358,7 +360,10 @@ def get_message(self) -> str:
         pretty_vars = json.dumps(dct, sort_keys=True, indent=4)
 
         msg = f"Required var '{self.var_name}' not found in config:\nVars supplied to {node_name} = {pretty_vars}"
-        return msg
+        return scrub_secrets(msg, self.var_secrets())
+
+    def var_secrets(self) -> List[str]:
+        return [v for k, v in self.merged.items() if k.startswith(SECRET_ENV_PREFIX) and v.strip()]
 
 
 class PackageNotFoundForMacroError(CompilationError):

core/dbt/parser/manifest.py

@@ -43,6 +43,7 @@
     MANIFEST_FILE_NAME,
     PARTIAL_PARSE_FILE_NAME,
     SEMANTIC_MANIFEST_FILE_NAME,
+    SECRET_ENV_PREFIX,
 )
 from dbt_common.helper_types import PathSet
 from dbt_common.events.functions import fire_event, get_invocation_id, warn_or_error
@@ -113,6 +114,7 @@
     TargetNotFoundError,
     AmbiguousAliasError,
     InvalidAccessTypeError,
+    scrub_secrets,
 )
 from dbt.parser.base import Parser
 from dbt.parser.analysis import AnalysisParser
@@ -944,6 +946,9 @@ def build_manifest_state_check(self):
         # of env_vars, that would need to change.
         # We are using the parsed cli_vars instead of config.args.vars, in order
         # to sort them and avoid reparsing because of ordering issues.
+        secret_vars = [
+            v for k, v in config.cli_vars.items() if k.startswith(SECRET_ENV_PREFIX) and v.strip()
+        ]
         stringified_cli_vars = pprint.pformat(config.cli_vars)
         vars_hash = FileHash.from_contents(
             "\x00".join(
@@ -958,7 +963,7 @@ def build_manifest_state_check(self):
         fire_event(
             StateCheckVarsHash(
                 checksum=vars_hash.checksum,
-                vars=stringified_cli_vars,
+                vars=scrub_secrets(stringified_cli_vars, secret_vars),
                 profile=config.args.profile,
                 target=config.args.target,
                 version=__version__,

tests/functional/context_methods/test_cli_vars.py

@@ -206,3 +206,38 @@ def test_vars_in_selectors(self, project):
         # Var in cli_vars works
         results = run_dbt(["run", "--vars", "snapshot_target: dev"])
         assert len(results) == 1
+
+
+models_scrubbing__schema_yml = """
+version: 2
+models:
+- name: simple_model
+  columns:
+  - name: simple
+    data_tests:
+    - accepted_values:
+        values:
+        - abc
+"""
+
+models_scrubbing__simple_model_sql = """
+select
+    '{{ var("DBT_ENV_SECRET_simple") }}'::varchar as simple
+"""
+
+
+class TestCLIVarsScrubbing:
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "schema.yml": models_scrubbing__schema_yml,
+            "simple_model.sql": models_scrubbing__simple_model_sql,
+        }
+
+    def test__run_results_scrubbing(self, project):
+        results = run_dbt(["run", "--vars", "{DBT_ENV_SECRET_simple: abc, unused: def}"])
+        assert len(results) == 1
+        results = run_dbt(["test", "--vars", "{DBT_ENV_SECRET_simple: abc, unused: def}"])
+        assert len(results) == 1
+        run_results = get_artifact(project.project_root, "target", "run_results.json")
+        assert run_results["args"]["vars"] == {"DBT_ENV_SECRET_simple": "*****", "unused": "def"}