wagtail/scripts/latest.sh

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#! /bin/sh
# vim:sw=4 ts=4 et:
BUCKET=releases.wagtail.io
REGION=eu-west-1
CF_DISTRIBUTION=E283SZ5CB4MDM0
# Find the location of the AWS CLI binary. MacPorts sometimes put it in a
# weird place, so to be helpful we check those locations as well.
if [ -z "${AWS_CLI}" ]; then
for d in $(echo "${PATH}" | tr ':' ' ') \
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/bin \
/opt/local/Library/Frameworks/Python.framework/Versions/3.4/bin \
; do
if [ -x "${d}/aws" ]; then
AWS_CLI="${d}/aws"
break
fi
done
if [ -z "${AWS_CLI}" ]; then
printf >&2 -- '%s: cannot find AWS CLI binary "aws"\n' "$0"
printf >&2 -- '%s: please install AWS from https://aws.amazon.com/documentation/cli/\n' "$0"
exit 1
fi
fi
# CloudFront support in the CLI is still in beta.
$AWS_CLI configure set preview.cloudfront true
_usage() {
printf >&2 -- 'usage: %s get [output-filename]\n' "$0"
printf >&2 -- ' %s put [input-filename]\n' "$0"
printf >&2 -- ' %s <vi|edit>\n' "$0"
}
if [ "$#" -lt 1 ]; then
_usage
exit 1
fi
_get() {
if ! $AWS_CLI s3 cp --region "${REGION}" "s3://${BUCKET}/latest.txt" "$1"; then
printf >&2 -- "%s: failed to download latest.txt; see above messages\\n" "$0"
exit 1
fi
}
_put() {
if ! $AWS_CLI s3 cp --acl public-read --region "${REGION}" "$1" "s3://${BUCKET}/latest.txt"; then
printf >&2 -- "%s: failed to upload latest.txt; see above messages\\n" "$0"
exit 1
fi
$AWS_CLI >/dev/null cloudfront create-invalidation \
--distribution-id "$CF_DISTRIBUTION" \
--invalidation-batch \
'{
"Paths": {
"Items": [
"/latest.txt"
],
"Quantity": 1
},
"CallerReference": "latest.sh"
}'
}
if [ "$1" = "get" ]; then
if [ "$#" -lt 2 ]; then
_usage
exit 1
fi
shift
if [ -e "$2" ]; then
printf >&2 -- "%s: \"%s\": already exists, won't overwrite\\n" "$0"
exit 1
fi
_get "$@"
elif [ "$1" = "put" ]; then
if [ "$#" -lt 2 ]; then
_usage
exit 1
fi
shift
_put "$@"
elif [ "$1" = "edit" -o "$1" = "vi" ]; then
LTMP=$(mktemp "${TMPDIR:-/tmp}/latest.XXXXXX")
if [ "$?" -ne 0 ]; then
printf >&2 -- '%s: cannot create temporary file\n' "$0"
exit 1
fi
trap 'rm -f "${LTMP}"' 0 TERM INT
LTMP2=$(mktemp "${TMPDIR:-/tmp}/latest.XXXXXX")
if [ "$?" -ne 0 ]; then
printf >&2 -- '%s: cannot create temporary file\n' "$0"
exit 1
fi
trap 'rm -f "${LTMP2}"' 0 TERM INT
if ! _get "${LTMP}"; then
exit 1
fi
cp "${LTMP}" "${LTMP2}"
if [ ! -z "${VISUAL}" ]; then
editor="${VISUAL}"
elif [ ! -z "${EDITOR}" ]; then
editor="${EDITOR}"
else
editor='vi'
fi
$editor "${LTMP}"
if cmp "${LTMP}" "${LTMP2}" >/dev/null; then
printf >&2 -- '%s: no changes; exiting\n' "$0"
exit
fi
diff -u "${LTMP2}" "${LTMP}"
_put "${LTMP}"
fi