feat: handle default and supported values for building in source per workflow

aws_lambda_builders/workflow.py

@@ -6,6 +6,7 @@
 import logging
 
 from collections import namedtuple
+from enum import Enum
 
 from aws_lambda_builders.binary_path import BinaryPath
 from aws_lambda_builders.path_resolver import PathResolver
@@ -37,6 +38,21 @@ class BuildMode(object):
     RELEASE = "release"
 
 
+class BuildInSourceSupport(Enum):
+    """
+    Enum to define a workflow's support for building in source.
+    """
+
+    # can't build in source directory (e.g. only able to build in temporary or artifacts directories)
+    NOT_SUPPORTED = [False]
+
+    # can build in source directory but not required to
+    OPTIONALLY_SUPPORTED = [False, True]
+
+    # only able to build in source directory and not somewhere else
+    EXCLUSIVELY_SUPPORTED = [True]
+
+
 # TODO: Move sanitize out to its own class.
 def sanitize(func):  # pylint: disable=too-many-statements
     """
@@ -124,6 +140,15 @@ def __new__(mcs, name, bases, class_dict):
         if not isinstance(cls.CAPABILITY, Capability):
             raise ValueError("Workflow '{}' must register valid capabilities".format(cls.NAME))
 
+        # All workflows must define valid default and supported values for build in source
+        if (
+            not isinstance(cls.BUILD_IN_SOURCE_SUPPORT, BuildInSourceSupport)
+            or cls.BUILD_IN_SOURCE_BY_DEFAULT not in cls.BUILD_IN_SOURCE_SUPPORT.value
+        ):
+            raise ValueError(
+                "Workflow '{}' must define valid default and supported values for build in source".format(cls.NAME)
+            )
+
         LOG.debug("Registering workflow '%s' with capability '%s'", cls.NAME, cls.CAPABILITY)
         DEFAULT_REGISTRY[cls.CAPABILITY] = cls
 
@@ -148,6 +173,12 @@ class BaseWorkflow(object, metaclass=_WorkflowMetaClass):
     # Optional list of manifests file/folder names supported by this workflow.
     SUPPORTED_MANIFESTS = []
 
+    # Whether the workflow builds in source by default, each workflow should define this.
+    # (some workflows build in temporary or artifact directories by default)
+    BUILD_IN_SOURCE_BY_DEFAULT = None
+    # Support for building in source, each workflow should define this.
+    BUILD_IN_SOURCE_SUPPORT = None
+
     def __init__(
         self,
         source_dir,
@@ -229,7 +260,18 @@ def __init__(
         self.architecture = architecture
         self.is_building_layer = is_building_layer
         self.experimental_flags = experimental_flags if experimental_flags else []
+
         self.build_in_source = build_in_source
+        if build_in_source not in self.BUILD_IN_SOURCE_SUPPORT.value:
+            # only show warning if an unsupported value was explicitly passed in
+            if build_in_source is not None:
+                LOG.warning(
+                    'Workflow %s does not support value "%s" for building in source. Using default value "%s".',
+                    self.NAME,
+                    build_in_source,
+                    self.BUILD_IN_SOURCE_BY_DEFAULT,
+                )
+            self.build_in_source = self.BUILD_IN_SOURCE_BY_DEFAULT
 
         # Actions are registered by the subclasses as they seem fit
         self.actions = []

aws_lambda_builders/workflows/custom_make/workflow.py

@@ -2,7 +2,7 @@
 ProvidedMakeWorkflow
 """
 from aws_lambda_builders.workflows.custom_make.validator import CustomMakeRuntimeValidator
-from aws_lambda_builders.workflow import BaseWorkflow, Capability
+from aws_lambda_builders.workflow import BaseWorkflow, Capability, BuildInSourceSupport
 from aws_lambda_builders.actions import CopySourceAction
 from aws_lambda_builders.path_resolver import PathResolver
 from .actions import CustomMakeAction
@@ -23,6 +23,9 @@ class CustomMakeWorkflow(BaseWorkflow):
 
     EXCLUDED_FILES = (".aws-sam", ".git")
 
+    BUILD_IN_SOURCE_BY_DEFAULT = False
+    BUILD_IN_SOURCE_SUPPORT = BuildInSourceSupport.OPTIONALLY_SUPPORTED
+
     def __init__(self, source_dir, artifacts_dir, scratch_dir, manifest_path, runtime=None, osutils=None, **kwargs):
 
         super(CustomMakeWorkflow, self).__init__(
@@ -44,10 +47,6 @@ def __init__(self, source_dir, artifacts_dir, scratch_dir, manifest_path, runtim
 
         subprocess_make = SubProcessMake(make_exe=self.binaries["make"].binary_path, osutils=self.os_utils)
 
-        # Don't build in source by default (backwards compatibility)
-        if build_in_source is None:
-            build_in_source = False
-
         # an explicitly definied working directory should take precedence
         working_directory = options.get("working_directory") or self._select_working_directory(
             source_dir, scratch_dir, build_in_source

aws_lambda_builders/workflows/dotnet_clipackage/workflow.py

@@ -1,7 +1,7 @@
 """
 .NET Core CLI Package Workflow
 """
-from aws_lambda_builders.workflow import BaseWorkflow, Capability
+from aws_lambda_builders.workflow import BaseWorkflow, Capability, BuildInSourceSupport
 
 from .actions import GlobalToolInstallAction, RunPackageAction
 from .dotnetcli import SubprocessDotnetCLI
@@ -19,6 +19,9 @@ class DotnetCliPackageWorkflow(BaseWorkflow):
 
     CAPABILITY = Capability(language="dotnet", dependency_manager="cli-package", application_framework=None)
 
+    BUILD_IN_SOURCE_BY_DEFAULT = True
+    BUILD_IN_SOURCE_SUPPORT = BuildInSourceSupport.EXCLUSIVELY_SUPPORTED
+
     def __init__(self, source_dir, artifacts_dir, scratch_dir, manifest_path, runtime=None, mode=None, **kwargs):
 
         super(DotnetCliPackageWorkflow, self).__init__(

aws_lambda_builders/workflows/go_modules/workflow.py

@@ -1,7 +1,7 @@
 """
 Go Modules Workflow
 """
-from aws_lambda_builders.workflow import BaseWorkflow, Capability
+from aws_lambda_builders.workflow import BaseWorkflow, Capability, BuildInSourceSupport
 
 from .actions import GoModulesBuildAction
 from .builder import GoModulesBuilder
@@ -15,6 +15,9 @@ class GoModulesWorkflow(BaseWorkflow):
 
     CAPABILITY = Capability(language="go", dependency_manager="modules", application_framework=None)
 
+    BUILD_IN_SOURCE_BY_DEFAULT = True
+    BUILD_IN_SOURCE_SUPPORT = BuildInSourceSupport.EXCLUSIVELY_SUPPORTED
+
     def __init__(
         self, source_dir, artifacts_dir, scratch_dir, manifest_path, runtime=None, osutils=None, mode=None, **kwargs
     ):

aws_lambda_builders/workflows/java_gradle/workflow.py

@@ -4,7 +4,7 @@
 import hashlib
 import os
 from aws_lambda_builders.actions import CleanUpAction
-from aws_lambda_builders.workflow import BaseWorkflow, Capability
+from aws_lambda_builders.workflow import BaseWorkflow, Capability, BuildInSourceSupport
 from aws_lambda_builders.workflows.java.actions import JavaCopyDependenciesAction, JavaMoveDependenciesAction
 from aws_lambda_builders.workflows.java.utils import OSUtils
 
@@ -25,6 +25,9 @@ class JavaGradleWorkflow(BaseWorkflow):
 
     INIT_FILE = "lambda-build-init.gradle"
 
+    BUILD_IN_SOURCE_BY_DEFAULT = False
+    BUILD_IN_SOURCE_SUPPORT = BuildInSourceSupport.NOT_SUPPORTED
+
     def __init__(self, source_dir, artifacts_dir, scratch_dir, manifest_path, **kwargs):
         super(JavaGradleWorkflow, self).__init__(source_dir, artifacts_dir, scratch_dir, manifest_path, **kwargs)
 

aws_lambda_builders/workflows/java_maven/workflow.py

@@ -1,7 +1,7 @@
 """
 Java Maven Workflow
 """
-from aws_lambda_builders.workflow import BaseWorkflow, Capability
+from aws_lambda_builders.workflow import BaseWorkflow, Capability, BuildInSourceSupport
 from aws_lambda_builders.actions import CopySourceAction, CleanUpAction
 from aws_lambda_builders.workflows.java.actions import JavaCopyDependenciesAction, JavaMoveDependenciesAction
 from aws_lambda_builders.workflows.java.utils import OSUtils
@@ -28,6 +28,9 @@ class JavaMavenWorkflow(BaseWorkflow):
 
     EXCLUDED_FILES = (".aws-sam", ".git")
 
+    BUILD_IN_SOURCE_BY_DEFAULT = False
+    BUILD_IN_SOURCE_SUPPORT = BuildInSourceSupport.NOT_SUPPORTED
+
     def __init__(self, source_dir, artifacts_dir, scratch_dir, manifest_path, **kwargs):
         super(JavaMavenWorkflow, self).__init__(source_dir, artifacts_dir, scratch_dir, manifest_path, **kwargs)
 

aws_lambda_builders/workflows/nodejs_npm/workflow.py

@@ -5,7 +5,7 @@
 import logging
 
 from aws_lambda_builders.path_resolver import PathResolver
-from aws_lambda_builders.workflow import BaseWorkflow, Capability
+from aws_lambda_builders.workflow import BaseWorkflow, Capability, BuildInSourceSupport
 from aws_lambda_builders.actions import (
     CopySourceAction,
     CleanUpAction,
@@ -42,6 +42,9 @@ class NodejsNpmWorkflow(BaseWorkflow):
 
     CONFIG_PROPERTY = "aws_sam"
 
+    BUILD_IN_SOURCE_BY_DEFAULT = False
+    BUILD_IN_SOURCE_SUPPORT = BuildInSourceSupport.NOT_SUPPORTED
+
     def __init__(self, source_dir, artifacts_dir, scratch_dir, manifest_path, runtime=None, osutils=None, **kwargs):
 
         super(NodejsNpmWorkflow, self).__init__(

aws_lambda_builders/workflows/nodejs_npm_esbuild/workflow.py

@@ -7,7 +7,7 @@
 from pathlib import Path
 from typing import List
 
-from aws_lambda_builders.workflow import BaseWorkflow, Capability
+from aws_lambda_builders.workflow import BaseWorkflow, Capability, BuildInSourceSupport
 from aws_lambda_builders.actions import (
     CopySourceAction,
     CleanUpAction,
@@ -44,6 +44,9 @@ class NodejsNpmEsbuildWorkflow(BaseWorkflow):
 
     CONFIG_PROPERTY = "aws_sam"
 
+    BUILD_IN_SOURCE_BY_DEFAULT = False
+    BUILD_IN_SOURCE_SUPPORT = BuildInSourceSupport.NOT_SUPPORTED
+
     def __init__(self, source_dir, artifacts_dir, scratch_dir, manifest_path, runtime=None, osutils=None, **kwargs):
 
         super(NodejsNpmEsbuildWorkflow, self).__init__(

aws_lambda_builders/workflows/python_pip/workflow.py

@@ -3,7 +3,7 @@
 """
 import logging
 
-from aws_lambda_builders.workflow import BaseWorkflow, Capability
+from aws_lambda_builders.workflow import BaseWorkflow, BuildInSourceSupport, Capability
 from aws_lambda_builders.actions import CopySourceAction, CleanUpAction, LinkSourceAction
 from aws_lambda_builders.workflows.python_pip.validator import PythonRuntimeValidator
 from aws_lambda_builders.path_resolver import PathResolver
@@ -67,6 +67,9 @@ class PythonPipWorkflow(BaseWorkflow):
 
     PYTHON_VERSION_THREE = "3"
 
+    BUILD_IN_SOURCE_BY_DEFAULT = False
+    BUILD_IN_SOURCE_SUPPORT = BuildInSourceSupport.NOT_SUPPORTED
+
     def __init__(self, source_dir, artifacts_dir, scratch_dir, manifest_path, runtime=None, osutils=None, **kwargs):
 
         super(PythonPipWorkflow, self).__init__(

aws_lambda_builders/workflows/ruby_bundler/workflow.py

@@ -3,7 +3,7 @@
 """
 import logging
 
-from aws_lambda_builders.workflow import BaseWorkflow, Capability
+from aws_lambda_builders.workflow import BaseWorkflow, BuildInSourceSupport, Capability
 from aws_lambda_builders.actions import CopySourceAction, CopyDependenciesAction, CleanUpAction
 from .actions import RubyBundlerInstallAction, RubyBundlerVendorAction
 from .utils import OSUtils
@@ -25,6 +25,9 @@ class RubyBundlerWorkflow(BaseWorkflow):
 
     EXCLUDED_FILES = (".aws-sam", ".git")
 
+    BUILD_IN_SOURCE_BY_DEFAULT = False
+    BUILD_IN_SOURCE_SUPPORT = BuildInSourceSupport.NOT_SUPPORTED
+
     def __init__(self, source_dir, artifacts_dir, scratch_dir, manifest_path, runtime=None, osutils=None, **kwargs):
 
         super(RubyBundlerWorkflow, self).__init__(

tests/functional/testdata/workflows/hello_workflow/write_hello.py

@@ -4,7 +4,7 @@
 
 import os
 
-from aws_lambda_builders.workflow import BaseWorkflow, Capability
+from aws_lambda_builders.workflow import BaseWorkflow, BuildInSourceSupport, Capability
 from aws_lambda_builders.actions import BaseAction, Purpose
 
 
@@ -34,6 +34,8 @@ class WriteHelloWorkflow(BaseWorkflow):
 
     NAME = "WriteHelloWorkflow"
     CAPABILITY = Capability(language="python", dependency_manager="test", application_framework="test")
+    BUILD_IN_SOURCE_BY_DEFAULT = False
+    BUILD_IN_SOURCE_SUPPORT = BuildInSourceSupport.OPTIONALLY_SUPPORTED
 
     def __init__(self, source_dir, artifacts_dir, *args, **kwargs):
         super(WriteHelloWorkflow, self).__init__(source_dir, artifacts_dir, *args, **kwargs)

tests/unit/test_builder.py

@@ -4,7 +4,7 @@
 from parameterized import parameterized, param
 
 from aws_lambda_builders.builder import LambdaBuilder
-from aws_lambda_builders.workflow import Capability, BaseWorkflow
+from aws_lambda_builders.workflow import BuildInSourceSupport, Capability, BaseWorkflow
 from aws_lambda_builders.registry import DEFAULT_REGISTRY
 
 
@@ -71,6 +71,8 @@ class MyWorkflow(BaseWorkflow):
             CAPABILITY = Capability(
                 language=self.lang, dependency_manager=self.lang_framework, application_framework=self.app_framework
             )
+            BUILD_IN_SOURCE_BY_DEFAULT = False
+            BUILD_IN_SOURCE_SUPPORT = BuildInSourceSupport.OPTIONALLY_SUPPORTED
 
             def __init__(
                 self,