[infra][NFC] Use one source of truth for engines, languages etc. (#6163)

Do this only where it makes sense. For example, since CIFuzz doesn't
support dataflow, maintain a separate source of truth.

3 files changed, 16 insertions, 31 deletions

diff --git a/infra/cifuzz/config_utils.py b/infra/cifuzz/config_utils.py
index d9a8f0c45..cac076212 100644
--- a/infra/cifuzz/config_utils.py
+++ b/infra/cifuzz/config_utils.py
@@ -24,26 +24,10 @@ import environment
 # pylint: disable=wrong-import-position,import-error
 sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
-import helper
+import constants
 
 RUN_FUZZERS_MODES = ['batch', 'ci', 'coverage']
-
-# TODO(metzman): Make one source of truth for these in helper.py
 SANITIZERS = ['address', 'memory', 'undefined', 'coverage']
-LANGUAGES = [
-    'c',
-    'c++',
-    'go',
-    'jvm',
-    'python',
-    'rust',
-    'swift',
-]
-
-DEFAULT_ENGINE = 'libfuzzer'
-DEFAULT_ARCHITECTURE = 'x86_64'
-DEFAULT_LANGUAGE = 'c++'
-DEFAULT_SANITIZER = 'address'
 
 # This module deals a lot with env variables. Many of these will be set by users
 # and others beyond CIFuzz's control. Thus, you should be careful about using
@@ -60,7 +44,7 @@ def _get_pr_ref(event):
 
 
 def _get_sanitizer():
-  return os.getenv('SANITIZER', DEFAULT_SANITIZER).lower()
+  return os.getenv('SANITIZER', constants.DEFAULT_SANITIZER).lower()
 
 
 def _is_dry_run():
@@ -75,7 +59,7 @@ def _get_language():
   # getting it from the project.yaml) is outweighed by the complexity in
   # implementing this. A lot of the complexity comes from our unittests not
   # setting a proper projet at this point.
-  return os.getenv('LANGUAGE', DEFAULT_LANGUAGE)
+  return os.getenv('LANGUAGE', constants.DEFAULT_LANGUAGE)
 
 
 # pylint: disable=too-few-public-methods,too-many-instance-attributes
@@ -211,7 +195,8 @@ class BaseConfig:
 
     self.sanitizer = _get_sanitizer()
 
-    self.build_integration_path = helper.DEFAULT_RELATIVE_BUILD_INTEGRATION_PATH
+    self.build_integration_path = (
+        constants.DEFAULT_EXTERNAL_BUILD_INTEGRATION_PATH)
     self.language = _get_language()
     self.low_disk_space = environment.get_bool('LOW_DISK_SPACE', False)
 
@@ -239,9 +224,9 @@ class BaseConfig:
                     self.sanitizer, SANITIZERS)
       return False
 
-    if self.language not in LANGUAGES:
+    if self.language not in constants.LANGUAGES:
       logging.error('Invalid LANGUAGE: %s. Must be one of: %s.', self.language,
-                    LANGUAGES)
+                    constants.LANGUAGES)
       return False
 
     return True
diff --git a/infra/cifuzz/config_utils_test.py b/infra/cifuzz/config_utils_test.py
index d904fbfbb..a8da59ad8 100644
--- a/infra/cifuzz/config_utils_test.py
+++ b/infra/cifuzz/config_utils_test.py
@@ -17,6 +17,7 @@ import unittest
 from unittest import mock
 
 import config_utils
+import constants
 import test_helpers
 
 # pylint: disable=no-self-use,protected-access
@@ -72,8 +73,7 @@ class BaseConfigTest(unittest.TestCase):
     config = self._create_config()
     self.assertFalse(config.validate())
     mocked_error.assert_called_with('Invalid LANGUAGE: %s. Must be one of: %s.',
-                                    os.environ['LANGUAGE'],
-                                    config_utils.LANGUAGES)
+                                    os.environ['LANGUAGE'], constants.LANGUAGES)
 
   @mock.patch('logging.error')
   def test_validate_invalid_sanitizer(self, mocked_error):
diff --git a/infra/cifuzz/docker.py b/infra/cifuzz/docker.py
index 15858b458..e20e5ca00 100644
--- a/infra/cifuzz/docker.py
+++ b/infra/cifuzz/docker.py
@@ -16,10 +16,10 @@ import logging
 import os
 import sys
 
-import config_utils
 # pylint: disable=wrong-import-position,import-error
 sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
+import constants
 import utils
 
 BASE_BUILDER_TAG = 'gcr.io/oss-fuzz-base/base-builder'
@@ -29,8 +29,8 @@ PROJECT_TAG_PREFIX = 'gcr.io/oss-fuzz/'
 
 _DEFAULT_DOCKER_RUN_ARGS = [
     '--cap-add', 'SYS_PTRACE', '-e',
-    'FUZZING_ENGINE=' + config_utils.DEFAULT_ENGINE, '-e',
-    'ARCHITECTURE=' + config_utils.DEFAULT_ARCHITECTURE, '-e', 'CIFUZZ=True'
+    'FUZZING_ENGINE=' + constants.DEFAULT_ENGINE, '-e',
+    'ARCHITECTURE=' + constants.DEFAULT_ARCHITECTURE, '-e', 'CIFUZZ=True'
 ]
 
 EXTERNAL_PROJECT_IMAGE = 'external-project'
@@ -69,8 +69,8 @@ def delete_images(images):
 
 
 def get_base_docker_run_args(workspace,
-                             sanitizer=config_utils.DEFAULT_SANITIZER,
-                             language=config_utils.DEFAULT_LANGUAGE):
+                             sanitizer=constants.DEFAULT_SANITIZER,
+                             language=constants.DEFAULT_LANGUAGE):
   """Returns arguments that should be passed to every invocation of 'docker
   run'."""
   docker_args = _DEFAULT_DOCKER_RUN_ARGS.copy()
@@ -92,8 +92,8 @@ def get_base_docker_run_args(workspace,
 
 
 def get_base_docker_run_command(workspace,
-                                sanitizer=config_utils.DEFAULT_SANITIZER,
-                                language=config_utils.DEFAULT_LANGUAGE):
+                                sanitizer=constants.DEFAULT_SANITIZER,
+                                language=constants.DEFAULT_LANGUAGE):
   """Returns part of the command that should be used everytime 'docker run' is
   invoked."""
   docker_args, docker_container = get_base_docker_run_args(