File size: 3,010 Bytes
66b40fa |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 |
#!/bin/sh
set -e
ME=$(basename "$0")
entrypoint_log() {
if [ -z "${NGINX_ENTRYPOINT_QUIET_LOGS:-}" ]; then
echo "$@"
fi
}
add_stream_block() {
local conffile="/etc/nginx/nginx.conf"
if grep -q -E "\s*stream\s*\{" "$conffile"; then
entrypoint_log "$ME: $conffile contains a stream block; include $stream_output_dir/*.conf to enable stream templates"
else
# check if the file can be modified, e.g. not on a r/o filesystem
touch "$conffile" 2>/dev/null || { entrypoint_log "$ME: info: can not modify $conffile (read-only file system?)"; exit 0; }
entrypoint_log "$ME: Appending stream block to $conffile to include $stream_output_dir/*.conf"
cat << END >> "$conffile"
# added by "$ME" on "$(date)"
stream {
include $stream_output_dir/*.conf;
}
END
fi
}
auto_envsubst() {
local template_dir="${NGINX_ENVSUBST_TEMPLATE_DIR:-/etc/nginx/templates}"
local suffix="${NGINX_ENVSUBST_TEMPLATE_SUFFIX:-.template}"
local output_dir="${NGINX_ENVSUBST_OUTPUT_DIR:-/etc/nginx/conf.d}"
local stream_suffix="${NGINX_ENVSUBST_STREAM_TEMPLATE_SUFFIX:-.stream-template}"
local stream_output_dir="${NGINX_ENVSUBST_STREAM_OUTPUT_DIR:-/etc/nginx/stream-conf.d}"
local filter="${NGINX_ENVSUBST_FILTER:-}"
local template defined_envs relative_path output_path subdir
defined_envs=$(printf '${%s} ' $(awk "END { for (name in ENVIRON) { print ( name ~ /${filter}/ ) ? name : \"\" } }" < /dev/null ))
[ -d "$template_dir" ] || return 0
if [ ! -w "$output_dir" ]; then
entrypoint_log "$ME: ERROR: $template_dir exists, but $output_dir is not writable"
return 0
fi
find "$template_dir" -follow -type f -name "*$suffix" -print | while read -r template; do
relative_path="${template#"$template_dir/"}"
output_path="$output_dir/${relative_path%"$suffix"}"
subdir=$(dirname "$relative_path")
# create a subdirectory where the template file exists
mkdir -p "$output_dir/$subdir"
entrypoint_log "$ME: Running envsubst on $template to $output_path"
envsubst "$defined_envs" < "$template" > "$output_path"
done
# Print the first file with the stream suffix, this will be false if there are none
if test -n "$(find "$template_dir" -name "*$stream_suffix" -print -quit)"; then
mkdir -p "$stream_output_dir"
if [ ! -w "$stream_output_dir" ]; then
entrypoint_log "$ME: ERROR: $template_dir exists, but $stream_output_dir is not writable"
return 0
fi
add_stream_block
find "$template_dir" -follow -type f -name "*$stream_suffix" -print | while read -r template; do
relative_path="${template#"$template_dir/"}"
output_path="$stream_output_dir/${relative_path%"$stream_suffix"}"
subdir=$(dirname "$relative_path")
# create a subdirectory where the template file exists
mkdir -p "$stream_output_dir/$subdir"
entrypoint_log "$ME: Running envsubst on $template to $output_path"
envsubst "$defined_envs" < "$template" > "$output_path"
done
fi
}
auto_envsubst
exit 0
|