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#!/usr/bin/env python3
#
# Builds a list of nightly builds from S3
#
# Requires the following environment variables:
# SNAPSHOTS_BUCKET
# AWS_ACCESS_KEY_ID
# AWS_SECRET_ACCESS_KEY
import os
import re
import sys
import json
import boto3
import jinja2
from functools import cmp_to_key
def make_link(bucket, prefix, file):
f = re.sub(r'\s+', '+', file)
return "https://s3.amazonaws.com/{0}/{1}/{2}".format(bucket, prefix, file)
def compare(l, r):
try:
regex = r'\-(\d+)\-'
l_date = int(re.search(regex, l).group(1))
r_date = int(re.search(regex, r).group(1))
if l_date == r_date:
return 0
elif l_date > r_date:
return 1
else:
return -1
except:
return(-1)
def list_image_files(bucket, prefix):
s3 = boto3.client('s3')
object_listing = s3.list_objects_v2(Bucket=bucket, Prefix=prefix)
data = object_listing['Contents']
files = []
for f in data:
files.append(f['Key'])
return files
def render_image_list(bucket, prefix, files):
regex = prefix + r'/(.*?)'
file_names = list(set(map(lambda s: re.sub(regex, r'\1', s), files)))
file_names.sort(reverse=True, key=cmp_to_key(compare))
builds = []
for name in file_names:
build = {}
build['file'] = name
build['link'] = make_link(bucket, prefix, name)
builds.append(build)
tmpl = jinja2.Template("""
<ul>
{% for b in builds %}
<li><a href="{{b.link}}">{{b.file}}</a></li>
{% endfor %}
</ul>
""")
print(tmpl.render(builds=builds))
if __name__ == '__main__':
bucket = os.getenv("SNAPSHOTS_BUCKET")
try:
prefix = sys.argv[1]
except:
print("Please specify directory prefix!", file=sys.stderr)
sys.exit(1)
files = list_image_files(bucket, prefix)
render_image_list(bucket, prefix, files)
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