Fetch RDS logs

get_the_logs.sh

#!/bin/sh
#
# usage:
# $ sh get_the_logs.sh [rds-instance-name]
#

function __describe_logs {
  aws rds describe-db-log-files --db-instance-identifier $1
}

function __extract_log_files {
  jq '.["DescribeDBLogFiles"][] | .LogFileName' | tr -d \"
}

function __download_log {
  aws rds download-db-log-file-portion --db-instance-identifier $1 \
                                       --starting-token 0 \
                                       --output text \
                                       --log-file-name "$2" > "$2"
}

function get_the_log {
  echo "fetching the fuckin' logs!"

  local loglist=($(__describe_logs $1 | __extract_log_files))

  for f in ${loglist[@]}; do
    __download_log $1 $f
    printf "."
  done

  echo "...done!"
}

function usage {
  cat >&1 <<CAT
Fetch all logs for given RDS instance.
Example:
    $ get_the_logs.sh postgres-ds

Usage: get_the_logs.sh <INSTANCE_NAME>
CAT

  exit 1
}

# checks for arguments else prints usage
if [[ $# -eq 0 ]]; then
  usage
fi

args=("$@")
get_the_log ${args[0]}