From 57cc6098cf6315b0c2fee544c94d43d2a47bbfa4 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Sat, 8 Dec 2018 21:11:19 +0100
Subject: further improve script helpers

---
 common/utils.sh | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 90 insertions(+), 3 deletions(-)

(limited to 'common/utils.sh')

diff --git a/common/utils.sh b/common/utils.sh
index 119305de..3e31c568 100644
--- a/common/utils.sh
+++ b/common/utils.sh
@@ -1,21 +1,108 @@
-## this contains several helper functions
+## this file contains several helper functions, please source it to make use of them
 
-get_ansible_variable() {
+print_error() {
+  echo -e "\033[1;31mERROR:\033[1;0m $1"
+}
+
+print_success() {
+  echo -e "\033[1;32mSuccess:\033[1;0m $1"
+}
+
+print_info() {
+  echo -e "\033[1;37mInfo:\033[1;0m $1"
+}
+
+###########################
+## varibales from ansible hosts
+
+ansible_variable__get() {
   local _var_name="$1"
   local _hosts="$2"
 
   local _result=$(env ANSIBLE_STDOUT_CALLBACK="json" ansible "$_hosts" -m debug -a "var=$_var_name" | \
     jq -r ".plays[].tasks[].hosts[].$_var_name" | sort | uniq)
   if [ $? -ne 0 ] || [ -z "$_result" ]; then
+    print_error "failed to get value of variable '$_var_name' for host(s) '$_hosts'"
     return 1
   fi
 
   local _num_results=$(echo "$_result" | wc -l)
   if [ $_num_results -ne 1 ]; then
-    echo "ERROR: the vairable '$_var_name' is not unique for the given hosts '$_hosts', got values: $(echo $_result | xargs | sed 's/ /, /g')"
+    print_error "the vairable '$_var_name' is not unique for the given hosts '$_hosts', got values: $(echo $_result | xargs | sed 's/ /, /g')"
     return 2
   fi
 
   eval "$_var_name"='$(echo "$_result")'
   return 0
 }
+
+
+###########################
+## vault environment handling
+
+vault_environment__get() {
+  echo "${ANSIBLE_VAULT_IDENTITY_LIST}" | tr ',' '\n' | awk -F '@' '{ print($1) }' | sed '/^$/d'
+}
+
+vault_environment__set() {
+  unset ANSIBLE_VAULT_IDENTITY_LIST
+  for e in "$@"; do
+    vault_environment__activate $e || return 1
+  done
+}
+
+vault_environment__activate() {
+  if [ -z "$1" ]; then
+    print_error "please specify an environment"
+    return 2
+  fi
+
+  if [ ! -f "gpg/get-vault-pass-$1" ]; then
+    print_error "failed to activate environment: '$1' .. could not find password file 'gpg/get-vault-pass-$1'"
+    return 1
+  fi
+
+  for e in $(vault_environment__get); do
+    if [ "$1" = "$e" ]; then
+      print_info "environment '$1' is already active"
+      return 0 # environment is already activated
+    fi
+  done
+
+  if [ -z "${ANSIBLE_VAULT_IDENTITY_LIST}" ]; then
+    export ANSIBLE_VAULT_IDENTITY_LIST="$1@gpg/get-vault-pass-$1"
+  else
+    export ANSIBLE_VAULT_IDENTITY_LIST="${ANSIBLE_VAULT_IDENTITY_LIST},$1@gpg/get-vault-pass-$1"
+  fi
+  print_success "environment '$1' is now active"
+  return 0
+}
+
+vault_environment__deactivate() {
+  local new_list
+
+  if [ -z "$1" ]; then
+    print_error "please specify an environment"
+    return 2
+  fi
+
+  new_list=""
+  for e in $(vault_environment__get); do
+    if [ "$1" != "$e" ]; then
+      if [ -z "$new_list" ]; then
+        new_list="$e@gpg/get-vault-pass-$e"
+      else
+        new_list="$new_list,$e@gpg/get-vault-pass-$e"
+      fi
+    fi
+  done
+
+  if [ -z "$new_list" ]; then
+    unset ANSIBLE_VAULT_IDENTITY_LIST
+  else
+    export ANSIBLE_VAULT_IDENTITY_LIST="$new_list"
+  fi
+
+  print_success "environment '$1' is now deactivated"
+  return 0
+}
-- 
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