GNU make read variable from a file and present to choose on prompt-CodePudding

I do have a config file that contains multiple lines of code like

locals {
  env = {
    ns-marcus = {
      name                    = "marcus"
      vpc_name                = "vpc-marcus"
      subnet1_name            = "Subnet1-Marcus"
      subnet2_name            = "Subnet2-Marcus"
      route_table1_name             = "route-table-marcus"
      igw_name                      = "igw-marcus"
    }

    ns-phil = {
      name                    = "phil"
      vpc_name                = "vpc-phil"
      subnet1_name            = "Subnet1-phil"
      subnet2_name            = "Subnet2-phil"
      route_table1_name             = "route-table-phil"
      igw_name                      = "igw-phil"
    }

this list continuous to grow

I configured a Makefile that statically asks for the individual user on prompt and after text input commands are executed

all:
@echo "WORKSPACES AVAILABLE:"
@echo "marcus"
@echo "phil"

apply: all
@read -p "Enter Workspace Name: " workspace; \
terraform workspace select $$workspace

the issue I am now having is that if I statically add another user3 in my config file user.tf I have to manually edit the Makefile to include another @echo line for user3

Ideally I would love to read all potential users and then prompt for the configured users in user.tf

CodePudding user response：

You can just use something like awk to extract the workspace names from your config file:

all:
    @echo "WORKSPACES AVAILABLE"
    @awk '/^user/ {print $1}' config.file

apply: all
    @read -p "Enter Workspace Name: " workspace; \
    terraform workspace select $$workspace

CodePudding user response：

MYVAR := $(shell cat workspaces.tf | awk '{for (i=1;i<=NF;i  ) if ($$i == "name") {printf "%s\\n\n",$$3}}' workspaces.tf)
all:
    @echo "WORKSPACES AVAILABLE"
    @echo $(MYVAR)

this did it!