Run terraform plan with -target specified for autodiscovered resources/modules from given files or location or even based on git diff command result.

Clone this repository into your preferred location, cd into it and invoke ln -s $PWD/tfplan /usr/local/bin/tfplan

ln -s $PWD/tfapply /usr/local/bin/tfapply can be linked as well, so you can follow naming convention for apply command as well.

If landscape (install from here) is in PATH, terraform plan will be parsed with it.

$ tfplan [-f|--file filename] [-l|--limit "rule"] [--dry-run] [positional arguments]

• -f|--file filename|directory to discover resources from
• -l|--limit wildcard style rule to limit resources with (must be wrapped with " "]
• -h|--help display help
• -d|--git-diff read resources/modules from git diff, automatically disables reading from files even if defined, defaults to staged and unstaged changes to current commit, without untracked, or specify with --git-ref
• -r|--git-ref specify which commits to diff between, using git diff format (<commit>..<commit>. Defaults to HEAD (staged and unstaged changes to current commit, without untracked)
• --dry-run print steps without invoking them
• --version check current version and the newest one available, offers automatic update if newer is available
• positional arguemnts any flag from terraform, that needs to be invoked with tfplan

• $ tfplan -f . -l "google_compute_firewall.*" - will discover all files from . path (current directory) and will limits resources to google_compute_firewall only

• $ tfplan --file 10_firewall.tf -l "my_firewall_*" - will get resources from 10_firewall.tf file and limit them to those containing "my_firewall_" in the name

• $ tfplan --file 10_firewall.tf -destroy - will destroy every resource from 10_firewall.tf file

• $ tfplan --git-diff - will read resources and modules into targets from git diff

• $ tfplan --git-diff -l "google_compute_firewall.*" - will read resources from git diff and limit them to google_compute_firewall kind only

This flag uses git diff to determine what changed. By default it uses staged and to be staged files, excluding untracked by git, into consideration, but any commit diff that would be accepted by git diff will work. Using this option makes tfplan ignore files defined with other parameters.