Commit 8a0c0a9a authored by James Ennis's avatar James Ennis Committed by Tristan Van Berkom Add a utility function to create arbitrary size elements

New file consisting of functions that allow us to generate elements
on the fly now includes create_element_size()
parent 58adbe0b
from .runcli import cli, cli_integration
from .repo import create_repo, ALL_REPO_KINDS
from .artifactshare import create_artifact_share
from .element_generators import create_element_size
import os
from buildstream import _yaml
# create_element_size()
# This will open a "<name>_data" file for writing and write
# <size> MB of urandom (/dev/urandom) "stuff" into the file.
# A bst import element file is then created: <name>.bst
# Args:
# name: (str) of the element name (e.g. target.bst)
# path: (str) pathway to the project/elements directory
# dependencies: A list of strings (can also be an empty list)
# size: (int) size of the element in bytes
# Returns:
# Nothing (creates a .bst file of specified size)
def create_element_size(name, path, dependencies, size):
os.makedirs(path, exist_ok=True)
# Create a file to be included in this element's artifact
with open(os.path.join(path, name + '_data'), 'wb+') as f:
# Simplest case: We want this file (of specified size) to just
# be an import element.
element = {
'kind': 'import',
'sources': [
'kind': 'local',
'path': os.path.join(path, name + '_data')
'depends': dependencies
_yaml.dump(element, os.path.join(path, name))
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