mirror of
https://github.com/checktheroads/hyperglass
synced 2024-05-11 05:55:08 +00:00
78 lines
2.6 KiB
Python
78 lines
2.6 KiB
Python
"""
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Renders Jinja2 & Sass templates for use by the front end application
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"""
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# Standard Library Imports
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import json
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import subprocess
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from pathlib import Path
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# Third Party Imports
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import jinja2
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from logzero import logger
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# Project Imports
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from hyperglass.configuration import logzero_config # noqa: F401
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from hyperglass.configuration import params
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from hyperglass.exceptions import HyperglassError
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# Module Directories
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working_directory = Path(__file__).resolve().parent
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hyperglass_root = working_directory.parent
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file_loader = jinja2.FileSystemLoader(str(working_directory))
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env = jinja2.Environment(
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loader=file_loader, autoescape=True, extensions=["jinja2.ext.autoescape"]
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)
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def render_theme():
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"""Renders Jinja2 template to Sass file"""
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rendered_theme_file = hyperglass_root.joinpath("static/theme.sass")
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try:
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template = env.get_template("templates/theme.sass.j2")
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rendered_theme = template.render(params.branding)
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with rendered_theme_file.open(mode="w") as theme_file:
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theme_file.write(rendered_theme)
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except jinja2.exceptions as theme_error:
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logger.error(f"Error rendering theme: {theme_error}")
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raise HyperglassError(theme_error)
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def build_assets():
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"""Builds, bundles, and minifies Sass/CSS/JS web assets"""
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proc = subprocess.Popen(
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["yarn", "--silent", "--emoji", "false", "--json", "--no-progress", "build"],
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cwd=hyperglass_root.joinpath("static"),
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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)
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try:
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stdout, stderr = proc.communicate(timeout=15)
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except subprocess.TimeoutExpired:
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proc.kill()
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stdout, stderr = proc.communicate()
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output_out = json.loads(stdout.decode("utf-8").split("\n")[0])
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if proc.returncode != 0:
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output_error = json.loads(stderr.decode("utf-8").strip("\n"))
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logger.error(output_error["data"])
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raise HyperglassError(
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f'Error building web assets with script {output_out["data"]}:'
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f'{output_error["data"]}'
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)
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logger.debug(f'Built web assets with script {output_out["data"]}')
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def render_assets():
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"""Controller function for rendering sass theme elements and building web assets"""
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try:
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logger.debug("Rendering theme elements...")
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render_theme()
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logger.debug("Rendered theme elements")
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except HyperglassError as theme_error:
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raise HyperglassError(theme_error)
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try:
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logger.debug("Building web assets...")
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build_assets()
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logger.debug("Built web assets")
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except HyperglassError as assets_error:
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raise HyperglassError(assets_error)
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