Command to deploy to folder to an S3 bucket and hook up that bucket to a CNAME on cloudflare.

s3-deploy.cmd

@goto py2cmd
#!/usr/bin/env python
import os
import sys
import CloudFlare
import tldextract
import boto3
import mimetypes
mimetypes.init()

CLOUDFLARE_KEY = os.environ["CLOUDFLARE_KEY"]
CLOUDFLARE_EMAIL = os.environ["CLOUDFLARE_EMAIL"]

BUCKET_POLICY_TEMPLATE = """{{
    "Version": "2008-10-17",
    "Statement": [
        {{
            "Sid": "AllowPublicRead",
            "Effect": "Allow",
            "Principal": {{
                "AWS": "*"
            }},
            "Action": "s3:GetObject",
            "Resource": "arn:aws:s3:::{0}/*"
        }}
    ]
}}"""

def main(fqdn, folder):

    domain_info = tldextract.extract(fqdn)
    cf = CloudFlare.CloudFlare(email=CLOUDFLARE_EMAIL, token=CLOUDFLARE_KEY)
    s3 = boto3.client('s3')

    cf_zones = cf.zones.get()
    
    intended_zone = next(iter([x for x in cf_zones if x["name"] == "{0}.{1}".format(domain_info.domain, domain_info.suffix)]), None)

    if not intended_zone:
        raise Exception("Domain name is not part of Cloudflare account.")

    bucket = next(iter([x for x in s3.list_buckets()["Buckets"] if x["Name"] == fqdn]), None)

    if bucket:
        print "Existing bucket found."
    else:
        print "Creating bucket {0}".format(fqdn)
        s3.create_bucket(Bucket=fqdn, CreateBucketConfiguration={'LocationConstraint': 'us-west-2'})
        website_configuration = {
        'IndexDocument': {'Suffix': 'index.html'}
        }
        s3.put_bucket_website(Bucket=fqdn, WebsiteConfiguration=website_configuration)
        s3.put_bucket_policy(Bucket=fqdn, Policy=BUCKET_POLICY_TEMPLATE.format(fqdn))

    # Why oh why can't they just tell me.
    bucket_location = s3.get_bucket_location(Bucket=fqdn)["LocationConstraint"]
    bucket_domain =  "{0}.s3-website-{1}.amazonaws.com".format(fqdn,bucket_location)
    records = cf.zones.dns_records.get(intended_zone['id'])
    cname_record =  next(iter([x for x in records if x["name"] == fqdn]), None)
    if cname_record:
        print "CNAME record already exists. Moving on."
    else:
        cf.zones.dns_records.post(intended_zone["id"], data={"name": domain_info.subdomain, "type": "CNAME", "content":bucket_domain, "proxied": True })
        print "Added {0} CNAME to {1}.{2}".format(domain_info.subdomain, domain_info.domain, domain_info.suffix)

    full_path = os.path.abspath(folder)
    for root, dirs, files in os.walk(full_path):
        
        for file in files:
            local_file = "{0}\\{1}".format(root, file)
            print "Uploading: {0}".format(local_file)
            target = root[len(full_path) + 1:].replace("\\", "/")
            if len(target) == 0:
                target = file
            else:
                target = target + "/" + file
            s3.upload_file(local_file, fqdn, target, ExtraArgs={'ContentType': mimetypes.types_map.get("." + target.split('.')[-1], "binary/octet-stream")})

if "__main__" in __name__:
    main(sys.argv[1], sys.argv[2])
''':
:py2cmd
@python -x -B "%~f0" %*
@if NOT "%COMSPEC%" == "%SystemRoot%\system32\cmd.exe" goto endofscript
@if %errorlevel% == 9009 echo You do not have Python in your PATH.
@if errorlevel 1 goto script_failed_so_exit_with_non_zero_val 2>nul
:endofscript
:'''