def load_requirements(directory):
filepath = os.path.join(directory, REQUIREMENTS_FILENAME)
try:
data = load_data(filepath)
except FileNotFoundError:
data = {"dependencies": []}
return component_requirements_schema.validate(data)
def save_requirements(requirements, directory):
filepath = os.path.join(directory, REQUIREMENTS_FILENAME)
data = component_requirements_schema.validate(requirements)
save_data(
filepath,
data,
header=(
"Do not modify by hand. This file is automatically generated from"
" the required dependencies and the constraints specified for"
" them."),
)
def update_requirements(metadata, component_dir):
requirements = {"dependencies": []}
for dependency in metadata["dependencies"]:
component = Component.from_file(dependency["name"], component_dir)
constraints = dependency["constraints"]
try:
branch_constraints_schema.validate(constraints)
except SchemaError:
requirement = requirement_from_version_constraints(
component, constraints)
else:
requirement = requirement_from_branch_constraints(
component, constraints)
requirements["dependencies"].append(requirement)
return component_requirements_schema.validate(requirements)
def update_requirements(metadata, component_dir):
requirements = {"dependencies": []}
for dependency in metadata["dependencies"]:
component = load_component(dependency["name"], component_dir)
if not component:
raise ComponentError("Dependency '{name}' does not exist.".format(
name=dependency["name"], ))
constraints = dependency["constraints"]
try:
branch_constraints_schema.validate(constraints)
except SchemaError:
requirement = requirement_from_version_constraints(
component, constraints)
else:
requirement = requirement_from_branch_constraints(
component, constraints)
requirements["dependencies"].append(requirement)
return component_requirements_schema.validate(requirements)