0k-charms/letsencrypt/hooks/init

#!/bin/bash

## Init is run on host
## For now it is run every time the script is launched, but
## it should be launched only once after build.

## Accessible variables are:
## - SERVICE_NAME        Name of current service
## - DOCKER_BASE_IMAGE   Base image from which this service might be built if any
## - SERVICE_DATASTORE           Location on host of the DATASTORE of this service
## - SERVICE_CONFIGSTORE         Location on host of the CONFIGSTORE of this service

set -e

service_def=$(get_compose_service_def "$SERVICE_NAME")

USER_EMAIL=$(echo "$service_def" | shyaml get-value options.email 2>/dev/null) || {
    err "No ${WHITE}email${NORMAL} value in ${DARKYELLOW}$SERVICE_NAME${NORMAL} compose's ${WHITE}options${NORMAL}."
    exit 1
}

yaml_opt_bash_env() {
    local prefix="$1" key value
    while read-0 key value; do
        new_prefix="${prefix}_${key^^}"
        if [[ "$(echo "$value" | shyaml get-type)" == "struct" ]]; then
            echo "$value" | yaml_opt_bash_env "${new_prefix}"
        else
            printf "%s\0%s\0" "${new_prefix}" "$value"
        fi
    done < <(shyaml key-values-0)
}

yaml_opt_bash_env_ignore_first_level() {
    local prefix="$1" key value
    while read-0 key value; do
        new_prefix="${prefix}_${key^^}"
        if [[ "$(echo "$value" | shyaml get-type)" == "struct" ]]; then
            echo "$value" | yaml_opt_bash_env "${new_prefix}"
        fi
    done < <(shyaml key-values-0)
}


config="
$SERVICE_NAME:
  environment:
    LETSENCRYPT_USER_MAIL: $USER_EMAIL"


while read-0 key value; do
    config+="$(printf "\n    %s: %s" "$key" "$value")"
done < <(yaml_opt_bash_env_ignore_first_level LEXICON < <(echo "$service_def" | shyaml -y get-value options))

## XXXvlab: this is very temporary, we should change image to support more
## than one provider (cf: https://github.com/adferrand/docker-letsencrypt-dns/issues/24)
first_key=
while read-0 key value; do
    [[ "$(echo "$value" | shyaml get-type)" == "struct" ]] && {
        first_key="$key"
        break
    }
done < <(echo "$service_def" | shyaml key-values-0 options)

config+=$(echo -en "\n    LEXICON_PROVIDER: $first_key")

init-config-add "$config"

mkdir -p "$SERVICE_DATASTORE/etc/letsencrypt"
touch "$SERVICE_DATASTORE/etc/letsencrypt/domains.conf"