def __init__()

in aws_lambda_builders/workflows/nodejs_npm/workflow.py [0:0]


    def __init__(self, source_dir, artifacts_dir, scratch_dir, manifest_path, runtime=None, osutils=None, **kwargs):
        super(NodejsNpmWorkflow, self).__init__(
            source_dir, artifacts_dir, scratch_dir, manifest_path, runtime=runtime, **kwargs
        )

        if osutils is None:
            osutils = OSUtils()
        self.osutils = osutils

        if not osutils.file_exists(manifest_path):
            LOG.warning("package.json file not found. Continuing the build without dependencies.")
            self.actions = [CopySourceAction(source_dir, artifacts_dir, excludes=self.EXCLUDED_FILES)]
            return

        subprocess_npm = SubprocessNpm(osutils)

        tar_dest_dir = osutils.joinpath(scratch_dir, "unpacked")
        tar_package_dir = osutils.joinpath(tar_dest_dir, "package")
        # TODO: we should probably unpack straight into artifacts dir, rather than unpacking into tar_dest_dir and
        # then copying into artifacts. Just make sure EXCLUDED_FILES are not included, or remove them.
        npm_pack = NodejsNpmPackAction(
            tar_dest_dir, scratch_dir, manifest_path, osutils=osutils, subprocess_npm=subprocess_npm
        )

        npm_copy_npmrc_and_lockfile = NodejsNpmrcAndLockfileCopyAction(tar_package_dir, source_dir, osutils=osutils)

        self.manifest_dir = self.osutils.dirname(self.manifest_path)
        is_building_in_source = self.build_dir == self.source_dir
        is_external_manifest = self.manifest_dir != self.source_dir
        self.actions = [
            npm_pack,
            npm_copy_npmrc_and_lockfile,
            CopySourceAction(tar_package_dir, artifacts_dir, excludes=self.EXCLUDED_FILES),
        ]

        if is_external_manifest:
            # npm pack only copies source code if the manifest is in the same directory as the source code, we need to
            # copy the source code if the customer specified a different manifest path
            self.actions.append(CopySourceAction(self.source_dir, artifacts_dir, excludes=self.EXCLUDED_FILES))

        if self.download_dependencies:
            if is_building_in_source and not self.can_use_install_links(subprocess_npm):
                LOG.warning(UNSUPPORTED_NPM_VERSION_MESSAGE)

                is_building_in_source = False
                self.build_dir = self._select_build_dir(build_in_source=False)

            self.actions.append(
                NodejsNpmWorkflow.get_install_action(
                    source_dir=source_dir,
                    # run npm install in the directory where the manifest (package.json) exists if customer is building
                    # in source, and manifest directory is different from source.
                    # This will let NPM find the local dependencies that are defined in the manifest file (they are
                    # usually defined as relative to the manifest location, and that is why we run `npm install` in the
                    # manifest directory instead of source directory).
                    # If customer is not building in source, so it is ok to run `npm install` in the build
                    # directory (the artifacts directory in this case), as the local dependencies are not supported.
                    install_dir=self.manifest_dir if is_building_in_source and is_external_manifest else self.build_dir,
                    subprocess_npm=subprocess_npm,
                    osutils=osutils,
                    build_options=self.options,
                    is_building_in_source=is_building_in_source,
                )
            )

            self.actions.append(
                NodejsNpmTestAction(
                    install_dir=self.manifest_dir if is_building_in_source and is_external_manifest else self.build_dir,
                    subprocess_npm=subprocess_npm,
                )
            )

            if is_building_in_source and is_external_manifest:
                # Since we run `npm install` in the manifest directory, so we need to link the node_modules directory in
                # the source directory.
                source_dependencies_path = os.path.join(self.source_dir, "node_modules")
                manifest_dependencies_path = os.path.join(self.manifest_dir, "node_modules")
                self.actions.append(
                    LinkSinglePathAction(source=manifest_dependencies_path, dest=source_dependencies_path)
                )

        if self.download_dependencies and is_building_in_source:
            self.actions += self._actions_for_linking_source_dependencies_to_artifacts

        # if no dependencies dir, just cleanup artifacts and we're done
        if not self.dependencies_dir:
            self.actions += self._actions_for_cleanup
            return

        # if we downloaded dependencies, update dependencies_dir
        if self.download_dependencies:
            self.actions += self._actions_for_updating_dependencies_dir
        # otherwise if we want to use the dependencies from dependencies_dir and we want to combine them,
        # then copy them into the artifacts dir
        elif self.combine_dependencies:
            self.actions.append(
                CopySourceAction(self.dependencies_dir, artifacts_dir, maintain_symlinks=is_building_in_source)
            )

        self.actions += self._actions_for_cleanup