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deploy.py
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deploy.py
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from os.path import exists, join
from os import makedirs
import os, tarfile, requests, yaml, hashlib
def read_config(path):
with open(path) as f:
return yaml.load(f)
def compute_sha(path):
with open(path, 'rb', buffering=16*1024*1024) as f:
sha = hashlib.sha1()
for buffer in f:
sha.update(buffer)
return sha.hexdigest()
config = read_config('config.yaml')
print("Changing working directory to {}".format(config['base_dir']))
os.chdir(config['base_dir'])
if not exists('resources'):
print("Creating resources/")
makedirs('resources')
# Download missing files
print("Downloading all files...")
for download in config['download']:
makedirs(download['to'], exist_ok=True)
for url in download['from']:
file_name = url.split("/")[-1]
full_path = join(download['to'], file_name)
if exists(full_path):
print("{} already exists, skipping".format(full_path))
continue
print("Downloading {} to {}".format(file_name, full_path))
with open(full_path, "wb") as f:
response = requests.get(url, stream=True)
for block in response.iter_content(1024):
f.write(block)
print("{} downloaded".format(file_name))
if str.endswith(file_name, ".tar.gz"):
print("Extracting...")
with tarfile.open(full_path) as tf:
tf.extractall()
# Check file_exists
print("Checking if all necessary files exists...")
for f in config['check_exists']:
if 'shasum' in f:
print('Calculating shasum for {}...'.format(f['name']))
shasum = compute_sha(f['path'])
if not exists(f['path']):
raise FileNotFoundError("Missing file: {}".format(f))
elif 'shasum' in f and shasum != f['shasum']:
raise ValueError('Shasum does not match file {}'.format(f['path']))
print('Deployed successfully!')