Bash Script to List Vault Namespaces Recursively

vault_recursive_namespace_list.sh

#!/bin/bash
# First passing argument is the depth
# The second passing argument is the starting namespace

# Example usage to list namespaces 10 levels deep from the "root" namespace:
# ./vault_recursive_namespace_list.sh 10

# Example usage to list namespaces 5 levels deep from the "customer1" namespace.
# ./vault_recursive_namespace_list.sh 5 customer1

export all_namespaces=""

function getnamespaces()
{
# Recursive function for collecting all the namespaces in a variable
# First argument is the depth of recursivity
# Second argument is the starting namespace
# If the first argument is not a number than we bail out
case $1 in
''|*[!0-9]*) return 1;;
*) : ;;
esac
# If we reach to the last level then we end the recursive loop
[[ $1 -lt 1 ]] && return 0

for i in $(vault namespace list -ns=$2 2>>/dev/null |sed -e '1,2d') ; do
{
export all_namespaces=$(echo $all_namespaces "$2$i")
if [ "X$2" == "X" ] ; then
[ $1 -gt 1 ] && getnamespaces $(($1 - 1 )) "$i"
else
[ $1 -gt 1 ] && getnamespaces $(($1 - 1 )) "$2$i"
fi
}
done
return 0
}

# Getting all arguments from OS as ARGS
# By default we use the level depth 1

case $1 in
''|*[!0-9]*) export level=1;;
*) export level=$(echo $1) ; level=${level:=1};;
esac

namespace=$(echo $2)
namespace=${namespace:=root}

# If the namespace is default we empty the namespace starting point
[ "X${namespace}" == "Xroot" ] && export namespace=""

# If the namespace is not empty we ensure that the last character is '/'
if [ "X${namespace}" == "X" ] ; then
:
else
[ $(echo ${2: -1}) == '/' ] || export namespace="${namespace}/"
fi

echo "### Searching namespaces starting with $namespace ."
getnamespaces $level $namespace
echo "$all_namespaces ###" |sed 's/ /\n/g'