def create_fetcher()

in build/fbcode_builder/getdeps/manifest.py [0:0]

• 44 lines of code
• 16 McCabe index (conditional complexity)

    def create_fetcher(self, build_options, ctx):
        use_real_shipit = (
            ShipitTransformerFetcher.available() and build_options.use_shipit
        )
        if (
            not use_real_shipit
            and self.fbsource_path
            and build_options.fbsource_dir
            and self.shipit_project
        ):
            return SimpleShipitTransformerFetcher(build_options, self, ctx)

        if (
            self.fbsource_path
            and build_options.fbsource_dir
            and self.shipit_project
            and ShipitTransformerFetcher.available()
        ):
            # We can use the code from fbsource
            return ShipitTransformerFetcher(build_options, self.shipit_project)

        # Can we satisfy this dep with system packages?
        if build_options.allow_system_packages:
            if self._is_satisfied_by_preinstalled_environment(ctx):
                return PreinstalledNopFetcher()

            packages = self.get_required_system_packages(ctx)
            package_fetcher = SystemPackageFetcher(build_options, packages)
            if package_fetcher.packages_are_installed():
                return package_fetcher

        repo_url = self.get_repo_url(ctx)
        if repo_url:
            rev = self.get("git", "rev")
            depth = self.get("git", "depth")
            return GitFetcher(build_options, self, repo_url, rev, depth)

        url = self.get("download", "url", ctx=ctx)
        if url:
            # We need to defer this import until now to avoid triggering
            # a cycle when the facebook/__init__.py is loaded.
            try:
                from .facebook.lfs import LFSCachingArchiveFetcher

                return LFSCachingArchiveFetcher(
                    build_options, self, url, self.get("download", "sha256", ctx=ctx)
                )
            except ImportError:
                # This FB internal module isn't shippped to github,
                # so just use its base class
                return ArchiveFetcher(
                    build_options, self, url, self.get("download", "sha256", ctx=ctx)
                )

        raise KeyError(
            "project %s has no fetcher configuration matching %s" % (self.name, ctx)
        )