from typing import Dict, Any, Union, List from pathlib import Path from wasabi import msg import srsly import hashlib import typer from typer.main import get_command from contextlib import contextmanager from thinc.config import ConfigValidationError from configparser import InterpolationError import sys from ..schemas import ProjectConfigSchema, validate PROJECT_FILE = "project.yml" PROJECT_LOCK = "project.lock" COMMAND = "python -m spacy" NAME = "spacy" HELP = """spaCy Command-line Interface DOCS: https://spacy.io/api/cli """ PROJECT_HELP = f"""Command-line interface for spaCy projects and working with project 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. """ # 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) app.add_typer(project_cli) def setup_cli() -> None: # 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]) -> 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. args (List[str]): The extra arguments from the command line. RETURNS (Dict[str, Any]): The parsed dict, keyed by nested config setting. """ result = {} while args: opt = args.pop(0) err = f"Invalid config override '{opt}'" if opt.startswith("--"): # new argument opt = opt.replace("--", "").replace("-", "_") if "." not in opt: msg.fail(f"{err}: can't override top-level section", exits=1) 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 b 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}: options need to start with --", exits=1) return result def load_project_config(path: Path) -> 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. 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, "\n".join(errors), exits=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) return config 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() raise ValueError(f"Can't get checksum for {path}: not a file or directory") @contextmanager def show_validation_error(title: str = "Config validation error"): """Helper to show custom config validation errors on the CLI. title (str): Title of the custom formatted error. """ try: yield except (ConfigValidationError, InterpolationError) as e: msg.fail(title, spaced=True) print(str(e).replace("Config validation error", "").strip()) sys.exit(1)