#!/bin/bash
# Script to download all RDS logs for a DB instance
# requires AWS cli and jq.

DB=${1}

if [ -z ${DB} ]; then
  echo "Please pass an argument for the database.  E.g.:"
  echo "  ${0} my_rds_db"
fi


if [ -z ${SKIP_LOGFILES} ]; then
  echo "Downloading list of logfiles"
  aws rds describe-db-log-files --db-instance-identifier ${DB} | \
    jq ".DescribeDBLogFiles[].LogFileName" -r > logfiles
fi

test -d logs || mkdir logs

while IFS='' read -r file; do
  portion="logs/$(basename ${file})"

  if [ ! -f "${portion}" ]; then
    echo "Downloading ${file}"
    aws rds download-db-log-file-portion --db-instance-identifier ${DB} \
      --log-file-name ${file} | jq -r ".LogFileData" > ${portion}
  fi
done < logfiles