golang-app/deploy/docker/environment.sh
2022-08-03 23:17:49 +03:00

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source deploy/docker/logging.sh
# usage: loadVariable VAR [DEFAULT]
# ie: file_env 'DB_PASSWORD' 'example'
# (will allow for "$DB_PASSWORD_FILE" to fill in the value of
# "$DB_PASSWORD" from a file, especially for Docker's secrets feature)
loadVariable() {
local variable="$1"
local variableFile="${variable}_FILE"
local default="${2:-}"
if [ "${!variable:-}" ] && [ "${!variableFile:-}" ]; then
logError "Both $variable and $variableFile are set (but are exclusive)"
fi
local value="$default"
if [ "${!variable:-}" ]; then
value="${!variable}"
elif [ "${!variableFile:-}" ]; then
value="$(<"${!variableFile}")"
fi
export "$variable"="$value"
unset "$variableFile"
}
# loads various settings
setupEnvironment() {
loadVariable 'TIMEZONE' 'Etc/GMT'
# loadVariable 'MIGRATION_PARAM' ''
# # initialize values that might be stored in a file
# loadVariable 'MYSQL_HOST'
# loadVariable 'MYSQL_DATABASE' 'defaultDatabase'
# loadVariable 'MYSQL_USER' 'defaultUser'
# loadVariable 'MYSQL_PASSWORD'
# initialize values that might be stored in a file
loadVariable 'TOKEN'
loadVariable 'OWNER' 'default owner'
}
# verify required environment.
verifyEnvironment() {
if [ -z "$TOKEN" ]; then
logError $'Token is not completely filled\n\tYou need to specify $TOKEN'
fi
# if [ -z "$MYSQL_HOST" -o -z "$MYSQL_PASSWORD" ]; then
# logError $'MYSQL databases credentials is not completely filled\n\tYou need to specify $MYSQL_HOST, $MYSQL_PASSWORD'
# fi
}
setupEnvironment
verifyEnvironment