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Add module support and DRY some things #6

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Add module support and DRY some things #6

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99 changes: 21 additions & 78 deletions terraform-repl
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
#!/usr/bin/env bash
VERSION="0.2.18"
VERSION="0.2.19"

set -o history
HISTFILE=~/.myrepl_history
Expand All @@ -24,7 +24,7 @@ print_options()
help()
{
echo "terraform-repl [version $VERSION]"
echo "* To inspect all objects of a certain kind, use \"local\", \"resource\", \"data\" or \"output\""
echo "* To inspect all objects of a certain kind, use \"data\", \"local\", \"module\", \"output\", or \"resource\""
echo "* To get tab completion for objects, use the object name followed by the <TAB> key, e.g. \"local.<TAB>\""
echo "* To get tab completion for terraform functions, use char(s) followed by the <TAB> key, e.g. \"a<TAB>\""
echo "* To view the command history, use \"history\""
Expand Down Expand Up @@ -162,6 +162,8 @@ TERRAFORM_FUNCTIONS=(
type
)

REQUIRED_TOOLS=("terraform" "jq" "hcl2json")
REQUIRED_DOCKER_TOOLS=("docker" "socat")

# by default, use the docker container backend
use_docker_container_backend=false
Expand All @@ -184,57 +186,18 @@ while [[ "$#" -gt 0 ]]; do
shift
done

_validate_docker_install () {
local PREREQ_MET=true

# make sure docker is installed
which docker &> /dev/null
if [[ "$?" -ne 0 ]]; then
echo "docker is not installed"
PREREQ_MET=false
fi

# make sure socat is installed
which socat &> /dev/null
if [[ "$?" -ne 0 ]]; then
echo "socat is not installed"
PREREQ_MET=false
fi

if [ "$PREREQ_MET" = false ] ; then
echo "One or more prerequisites were not met!"
exit 1
fi
}

_validate_prerequisites () {
local PREREQ_MET=true
local PREREQS=("$@")

# make sure terraform is installed
which terraform &> /dev/null
if [[ "$?" -ne 0 ]]; then
echo "terraform is not installed"
PREREQ_MET=false
fi

# make sure jq is installed
which jq &> /dev/null
if [[ "$?" -ne 0 ]]; then
echo "jq is not installed"
PREREQ_MET=false
fi

# make sure hcl2json is installed
which hcl2json &> /dev/null
if [[ "$?" -ne 0 ]]; then
echo "hcl2json is not installed"
PREREQ_MET=false
fi
for PREREQ in "${PREREQS[@]}"; do
command -v "$PREREQ" &> /dev/null || {
echo "$PREREQ is not installed"
PREREQ_MET=false
}
done

if [ "$PREREQ_MET" = false ] ; then
echo "One or more prerequisites were not met!"
exit 1
fi
[ "$PREREQ_MET" ] || exit 1
}

_check_running_terraform_console_process () {
Expand Down Expand Up @@ -309,7 +272,7 @@ _tab()
data_paths=$(_get_data_paths "$data_sources")

# escape square brackets in readline for grep
string_to_match=$(sed 's/\[/\\[/g' <<< "$READLINE_LINE")
string_to_match="${READLINE_LINE//\[/\\[}"

# find possible matches in paths given input
possible_matches=($(printf "%s\n" "${data_paths}" | grep "^${string_to_match}"))
Expand Down Expand Up @@ -594,7 +557,7 @@ _write_to_transcript_if_enabled() {
fi
}

_validate_prerequisites
_validate_prerequisites "${REQUIRED_TOOLS[@]}"

if [ "${use_tab_completion}" = true ]; then
_enable_tab_completion
Expand All @@ -604,7 +567,7 @@ fi

if [ "${use_docker_container_backend}" = true ]; then
# if the -docker-container-backend flag has been specified, start the backend container
_validate_docker_install
_validate_prerequisites "${REQUIRED_DOCKER_TOOLS[@]}"
_check_running_terraform_repl_container_in_dir
_check_running_terraform_console_process
_run_tf_container
Expand Down Expand Up @@ -675,41 +638,21 @@ EOM
fi
continue

# if the input is exacly local, use hcl2json and jq to get object
# when the input is exacly local
elif grep -qE "^local$" <<< "$input"; then
command_output=$(_get_obj ".locals" | tee /dev/tty)
if [[ "$?" -ne 0 ]]; then
if [[ -z "$command_output" ]]; then
echo "The provided input did not match any locals object"
fi
# write input and output to transcript if enabled
_write_to_transcript_if_enabled "> $input" "$command_output"
continue

# if the input is resource followed by an optional key, use hcl2json and jq to get object
elif grep -qE "^resource(\.[^.]+)?$" <<< "$input"; then
command_output=$(_get_obj ".$input" | tee /dev/tty)
if [[ "$?" -ne 0 ]]; then
echo "The provided input did not match any resource object"
fi
# write input and output to transcript if enabled
_write_to_transcript_if_enabled "> $input" "$command_output"
continue

# if the input is data followed by an optional key, use hcl2json and jq to get object
elif grep -qE "^data(\.[^.]+)?$" <<< "$input"; then
command_output=$(_get_obj ".$input" | tee /dev/tty)
if [[ "$?" -ne 0 ]]; then
echo "The provided input did not match any data object"
fi
# write input and output to transcript if enabled
_write_to_transcript_if_enabled "> $input" "$command_output"
continue

# if the input is output followed by an optional key, use hcl2json and jq to get object
elif grep -qE "^output(\.[^.]+)?$" <<< "$input"; then
# when the input reflects another supported object followed by an optional key
elif grep -qE "^(resource|data|output|module)(\.[^.]+)?$" <<< "$input"; then
command_output=$(_get_obj ".$input" | tee /dev/tty)
if [[ "$?" -ne 0 ]]; then
echo "The provided input did not match any output object"
if [[ -z "$command_output" ]]; then
echo "The provided input did not match any object"
fi
# write input and output to transcript if enabled
_write_to_transcript_if_enabled "> $input" "$command_output"
Expand Down