from typing import Dict, Any, Union, List, Optional, Tuple, TYPE_CHECKING import sys import shutil from pathlib import Path from wasabi import msg import srsly import hashlib import typer from click import NoSuchOption from click.parser import split_arg_string from typer.main import get_command from contextlib import contextmanager from thinc.api import Config, ConfigValidationError from configparser import InterpolationError import os from ..schemas import ProjectConfigSchema, validate from ..util import import_file, run_command, make_tempdir, registry, logger if TYPE_CHECKING: from pathy import Pathy # noqa: F401 PROJECT_FILE = "project.yml" PROJECT_LOCK = "project.lock" COMMAND = "python -m spacy" NAME = "spacy" HELP = """spaCy Command-line Interface DOCS: https://nightly.spacy.io/api/cli """ PROJECT_HELP = f"""Command-line interface for spaCy projects and templates. You'd typically start by cloning a project template to a local directory and fetching its assets like datasets etc. See the project's {PROJECT_FILE} for the available commands. """ DEBUG_HELP = """Suite of helpful commands for debugging and profiling. Includes commands to check and validate your config files, training and evaluation data, and custom model implementations. """ INIT_HELP = """Commands for initializing configs and pipeline packages.""" OVERRIDES_ENV_VAR = "SPACY_CONFIG_OVERRIDES" # Wrappers for Typer's annotations. Initially created to set defaults and to # keep the names short, but not needed at the moment. Arg = typer.Argument Opt = typer.Option app = typer.Typer(name=NAME, help=HELP) project_cli = typer.Typer(name="project", help=PROJECT_HELP, no_args_is_help=True) debug_cli = typer.Typer(name="debug", help=DEBUG_HELP, no_args_is_help=True) init_cli = typer.Typer(name="init", help=INIT_HELP, no_args_is_help=True) app.add_typer(project_cli) app.add_typer(debug_cli) app.add_typer(init_cli) def setup_cli() -> None: # Make sure the entry-point for CLI runs, so that they get imported. registry.cli.get_all() # Ensure that the help messages always display the correct prompt command = get_command(app) command(prog_name=COMMAND) def parse_config_overrides( args: List[str], env_var: Optional[str] = OVERRIDES_ENV_VAR ) -> Dict[str, Any]: """Generate a dictionary of config overrides based on the extra arguments provided on the CLI, e.g. --training.batch_size to override "training.batch_size". Arguments without a "." are considered invalid, since the config only allows top-level sections to exist. env_vars (Optional[str]): Optional environment variable to read from. RETURNS (Dict[str, Any]): The parsed dict, keyed by nested config setting. """ env_string = os.environ.get(env_var, "") if env_var else "" env_overrides = _parse_overrides(split_arg_string(env_string)) cli_overrides = _parse_overrides(args, is_cli=True) if cli_overrides: keys = [k for k in cli_overrides if k not in env_overrides] logger.debug(f"Config overrides from CLI: {keys}") if env_overrides: logger.debug(f"Config overrides from env variables: {list(env_overrides)}") return {**cli_overrides, **env_overrides} def _parse_overrides(args: List[str], is_cli: bool = False) -> Dict[str, Any]: result = {} while args: opt = args.pop(0) err = f"Invalid config override '{opt}'" if opt.startswith("--"): # new argument orig_opt = opt opt = opt.replace("--", "") if "." not in opt: if is_cli: raise NoSuchOption(orig_opt) else: msg.fail(f"{err}: can't override top-level sections", exits=1) if "=" in opt: # we have --opt=value opt, value = opt.split("=", 1) opt = opt.replace("-", "_") else: if not args or args[0].startswith("--"): # flag with no value value = "true" else: value = args.pop(0) # Just like we do in the config, we're calling json.loads on the # values. But since they come from the CLI, it'd be unintuitive to # explicitly mark strings with escaped quotes. So we're working # around that here by falling back to a string if parsing fails. # TODO: improve logic to handle simple types like list of strings? try: result[opt] = srsly.json_loads(value) except ValueError: result[opt] = str(value) else: msg.fail(f"{err}: name should start with --", exits=1) return result def load_project_config(path: Path, interpolate: bool = True) -> Dict[str, Any]: """Load the project.yml file from a directory and validate it. Also make sure that all directories defined in the config exist. path (Path): The path to the project directory. interpolate (bool): Whether to substitute project variables. RETURNS (Dict[str, Any]): The loaded project.yml. """ config_path = path / PROJECT_FILE if not config_path.exists(): msg.fail(f"Can't find {PROJECT_FILE}", config_path, exits=1) invalid_err = f"Invalid {PROJECT_FILE}. Double-check that the YAML is correct." try: config = srsly.read_yaml(config_path) except ValueError as e: msg.fail(invalid_err, e, exits=1) errors = validate(ProjectConfigSchema, config) if errors: msg.fail(invalid_err) print("\n".join(errors)) sys.exit(1) validate_project_commands(config) # Make sure directories defined in config exist for subdir in config.get("directories", []): dir_path = path / subdir if not dir_path.exists(): dir_path.mkdir(parents=True) if interpolate: err = "project.yml validation error" with show_validation_error(title=err, hint_fill=False): config = substitute_project_variables(config) return config def substitute_project_variables(config: Dict[str, Any], overrides: Dict = {}): key = "vars" config.setdefault(key, {}) config[key].update(overrides) # Need to put variables in the top scope again so we can have a top-level # section "project" (otherwise, a list of commands in the top scope wouldn't) # be allowed by Thinc's config system cfg = Config({"project": config, key: config[key]}) interpolated = cfg.interpolate() return dict(interpolated["project"]) def validate_project_commands(config: Dict[str, Any]) -> None: """Check that project commands and workflows are valid, don't contain duplicates, don't clash and only refer to commands that exist. config (Dict[str, Any]): The loaded config. """ command_names = [cmd["name"] for cmd in config.get("commands", [])] workflows = config.get("workflows", {}) duplicates = set([cmd for cmd in command_names if command_names.count(cmd) > 1]) if duplicates: err = f"Duplicate commands defined in {PROJECT_FILE}: {', '.join(duplicates)}" msg.fail(err, exits=1) for workflow_name, workflow_steps in workflows.items(): if workflow_name in command_names: err = f"Can't use workflow name '{workflow_name}': name already exists as a command" msg.fail(err, exits=1) for step in workflow_steps: if step not in command_names: msg.fail( f"Unknown command specified in workflow '{workflow_name}': {step}", f"Workflows can only refer to commands defined in the 'commands' " f"section of the {PROJECT_FILE}.", exits=1, ) def get_hash(data) -> str: """Get the hash for a JSON-serializable object. data: The data to hash. RETURNS (str): The hash. """ data_str = srsly.json_dumps(data, sort_keys=True).encode("utf8") return hashlib.md5(data_str).hexdigest() def get_checksum(path: Union[Path, str]) -> str: """Get the checksum for a file or directory given its file path. If a directory path is provided, this uses all files in that directory. path (Union[Path, str]): The file or directory path. RETURNS (str): The checksum. """ path = Path(path) if path.is_file(): return hashlib.md5(Path(path).read_bytes()).hexdigest() if path.is_dir(): # TODO: this is currently pretty slow dir_checksum = hashlib.md5() for sub_file in sorted(fp for fp in path.rglob("*") if fp.is_file()): dir_checksum.update(sub_file.read_bytes()) return dir_checksum.hexdigest() msg.fail(f"Can't get checksum for {path}: not a file or directory", exits=1) @contextmanager def show_validation_error( file_path: Optional[Union[str, Path]] = None, *, title: Optional[str] = None, desc: str = "", show_config: Optional[bool] = None, hint_fill: bool = True, ): """Helper to show custom config validation errors on the CLI. file_path (str / Path): Optional file path of config file, used in hints. title (str): Override title of custom formatted error. desc (str): Override description of custom formatted error. show_config (bool): Whether to output the config the error refers to. hint_fill (bool): Show hint about filling config. """ try: yield except ConfigValidationError as e: title = title if title is not None else e.title if e.desc: desc = f"{e.desc}" if not desc else f"{e.desc}\n\n{desc}" # Re-generate a new error object with overrides err = e.from_error(e, title="", desc=desc, show_config=show_config) msg.fail(title) print(err.text.strip()) if hint_fill and "value_error.missing" in err.error_types: config_path = file_path if file_path is not None else "config.cfg" msg.text( "If your config contains missing values, you can run the 'init " "fill-config' command to fill in all the defaults, if possible:", spaced=True, ) print(f"{COMMAND} init fill-config {config_path} --base {config_path}\n") sys.exit(1) except InterpolationError as e: msg.fail("Config validation error", e, exits=1) def import_code(code_path: Optional[Union[Path, str]]) -> None: """Helper to import Python file provided in training commands / commands using the config. This makes custom registered functions available. """ if code_path is not None: if not Path(code_path).exists(): msg.fail("Path to Python code not found", code_path, exits=1) try: import_file("python_code", code_path) except Exception as e: msg.fail(f"Couldn't load Python code: {code_path}", e, exits=1) def get_sourced_components(config: Union[Dict[str, Any], Config]) -> List[str]: """RETURNS (List[str]): All sourced components in the original config, e.g. {"source": "en_core_web_sm"}. If the config contains a key "factory", we assume it refers to a component factory. """ return [ name for name, cfg in config.get("components", {}).items() if "factory" not in cfg and "source" in cfg ] def upload_file(src: Path, dest: Union[str, "Pathy"]) -> None: """Upload a file. src (Path): The source path. url (str): The destination URL to upload to. """ import smart_open dest = str(dest) with smart_open.open(dest, mode="wb") as output_file: with src.open(mode="rb") as input_file: output_file.write(input_file.read()) def download_file(src: Union[str, "Pathy"], dest: Path, *, force: bool = False) -> None: """Download a file using smart_open. url (str): The URL of the file. dest (Path): The destination path. force (bool): Whether to force download even if file exists. If False, the download will be skipped. """ import smart_open if dest.exists() and not force: return None src = str(src) with smart_open.open(src, mode="rb", ignore_ext=True) as input_file: with dest.open(mode="wb") as output_file: output_file.write(input_file.read()) def ensure_pathy(path): """Temporary helper to prevent importing Pathy globally (which can cause slow and annoying Google Cloud warning).""" from pathy import Pathy # noqa: F811 return Pathy(path) def git_checkout( repo: str, subpath: str, dest: Path, *, branch: str = "master", sparse: bool = False ): git_version = get_git_version() if dest.exists(): msg.fail("Destination of checkout must not exist", exits=1) if not dest.parent.exists(): raise IOError("Parent of destination of checkout must exist") if sparse and git_version >= (2, 22): return git_sparse_checkout(repo, subpath, dest, branch) elif sparse: # Only show warnings if the user explicitly wants sparse checkout but # the Git version doesn't support it err_old = ( f"You're running an old version of Git (v{git_version[0]}.{git_version[1]}) " f"that doesn't fully support sparse checkout yet." ) err_unk = "You're running an unknown version of Git, so sparse checkout has been disabled." msg.warn( f"{err_unk if git_version == (0, 0) else err_old} " f"This means that more files than necessary may be downloaded " f"temporarily. To only download the files needed, make sure " f"you're using Git v2.22 or above." ) with make_tempdir() as tmp_dir: cmd = f"git -C {tmp_dir} clone {repo} . -b {branch}" run_command(cmd, capture=True) # We need Path(name) to make sure we also support subdirectories shutil.copytree(str(tmp_dir / Path(subpath)), str(dest)) def git_sparse_checkout(repo, subpath, dest, branch): # We're using Git, partial clone and sparse checkout to # only clone the files we need # This ends up being RIDICULOUS. omg. # So, every tutorial and SO post talks about 'sparse checkout'...But they # go and *clone* the whole repo. Worthless. And cloning part of a repo # turns out to be completely broken. The only way to specify a "path" is.. # a path *on the server*? The contents of which, specifies the paths. Wat. # Obviously this is hopelessly broken and insecure, because you can query # arbitrary paths on the server! So nobody enables this. # What we have to do is disable *all* files. We could then just checkout # the path, and it'd "work", but be hopelessly slow...Because it goes and # transfers every missing object one-by-one. So the final piece is that we # need to use some weird git internals to fetch the missings in bulk, and # *that* we can do by path. # We're using Git and sparse checkout to only clone the files we need with make_tempdir() as tmp_dir: # This is the "clone, but don't download anything" part. cmd = ( f"git clone {repo} {tmp_dir} --no-checkout --depth 1 " f"-b {branch} --filter=blob:none" ) run_command(cmd) # Now we need to find the missing filenames for the subpath we want. # Looking for this 'rev-list' command in the git --help? Hah. cmd = f"git -C {tmp_dir} rev-list --objects --all --missing=print -- {subpath}" ret = run_command(cmd, capture=True) git_repo = _http_to_git(repo) # Now pass those missings into another bit of git internals missings = " ".join([x[1:] for x in ret.stdout.split() if x.startswith("?")]) if not missings: err = ( f"Could not find any relevant files for '{subpath}'. " f"Did you specify a correct and complete path within repo '{repo}' " f"and branch {branch}?" ) msg.fail(err, exits=1) cmd = f"git -C {tmp_dir} fetch-pack {git_repo} {missings}" run_command(cmd, capture=True) # And finally, we can checkout our subpath cmd = f"git -C {tmp_dir} checkout {branch} {subpath}" run_command(cmd, capture=True) # We need Path(name) to make sure we also support subdirectories shutil.move(str(tmp_dir / Path(subpath)), str(dest)) def get_git_version( error: str = "Could not run 'git'. Make sure it's installed and the executable is available.", ) -> Tuple[int, int]: """Get the version of git and raise an error if calling 'git --version' fails. error (str): The error message to show. RETURNS (Tuple[int, int]): The version as a (major, minor) tuple. Returns (0, 0) if the version couldn't be determined. """ ret = run_command("git --version", capture=True) stdout = ret.stdout.strip() if not stdout or not stdout.startswith("git version"): return (0, 0) version = stdout[11:].strip().split(".") return (int(version[0]), int(version[1])) def _http_to_git(repo: str) -> str: if repo.startswith("http://"): repo = repo.replace(r"http://", r"https://") if repo.startswith(r"https://"): repo = repo.replace("https://", "git@").replace("/", ":", 1) if repo.endswith("/"): repo = repo[:-1] repo = f"{repo}.git" return repo def string_to_list(value: str, intify: bool = False) -> Union[List[str], List[int]]: """Parse a comma-separated string to a list and account for various formatting options. Mostly used to handle CLI arguments that take a list of comma-separated values. value (str): The value to parse. intify (bool): Whether to convert values to ints. RETURNS (Union[List[str], List[int]]): A list of strings or ints. """ if not value: return [] if value.startswith("[") and value.endswith("]"): value = value[1:-1] result = [] for p in value.split(","): p = p.strip() if p.startswith("'") and p.endswith("'"): p = p[1:-1] if p.startswith('"') and p.endswith('"'): p = p[1:-1] p = p.strip() if intify: p = int(p) result.append(p) return result