Prefer the json output from terraform version

CHANGELOG.md

@@ -26,8 +26,7 @@ When using an action you can specify the version as:
   - [dflook/terraform-destroy-workspace](https://github.com/dflook/terraform-github-actions/tree/master/terraform-destroy-workspace#outputs): destroy-failed
 
 ### Fixed
-- [dflook/terraform-validate](https://github.com/dflook/terraform-github-actions/tree/master/terraform-validate) was
-  sometimes unable to create detailed check failures.
+- [dflook/terraform-validate](https://github.com/dflook/terraform-github-actions/tree/master/terraform-validate) was sometimes unable to create detailed check failures.
 
 ## [1.14.0] - 2021-09-15
 

image/actions.sh

@@ -28,6 +28,15 @@ function detect-terraform-version() {
   fi
 
   debug_cmd ls -la "$(which terraform)"
+
+  local TF_VERSION
+  TF_VERSION=$(terraform version -json | jq -r '.terraform_version' 2>/dev/null || terraform version | grep 'Terraform v' | sed 's/Terraform v//')
+
+  TERRAFORM_VER_MAJOR=`echo $TF_VERSION | cut -d. -f1`
+  TERRAFORM_VER_MINOR=`echo $TF_VERSION | cut -d. -f2`
+  TERRAFORM_VER_PATCH=`echo $TF_VERSION | cut -d. -f3`
+
+  debug_log "Terraform version major $TERRAFORM_VER_MAJOR minor $TERRAFORM_VER_MINOR patch $TERRAFORM_VER_PATCH"
 }
 
 function job_markdown_ref() {

image/entrypoints/version.sh

@@ -6,4 +6,4 @@ debug
 setup
 init
 
-(cd "$INPUT_PATH" && terraform version -no-color | convert_version)
+(cd "$INPUT_PATH" && terraform version -json | convert_version)

image/tools/convert_version.py

@@ -1,8 +1,9 @@
 #!/usr/bin/python3
 
+import json
 import re
 import sys
-from typing import Iterable
+from typing import Iterable, Dict
 
 
 def convert_version(tf_output: str) -> Iterable[str]:
@@ -37,10 +38,44 @@ def convert_version(tf_output: str) -> Iterable[str]:
         yield f'::set-output name={provider_name.strip()}::{provider_version.strip()}'
 
 
+def convert_version_from_json(tf_output: Dict) -> Iterable[str]:
+    """
+    Convert terraform version JSON output human readable output and GitHub actions output commands
+
+    >>> tf_output = {
+      "terraform_version": "0.13.7",
+      "terraform_revision": "",
+      "provider_selections": {
+        "registry.terraform.io/hashicorp/random": "2.2.0"
+      },
+      "terraform_outdated": true
+    }
+    >>> list(convert_version(tf_output))
+    ['Terraform v0.13.7',
+     '::set-output name=terraform::0.13.7',
+     '+ provider registry.terraform.io/hashicorp/random v2.2.0',
+     '::set-output name=random::2.2.0']
+    """
+
+    yield f'Terraform v{tf_output["terraform_version"]}'
+    yield f'::set-output name=terraform::{tf_output["terraform_version"]}'
+
+    for path, version in tf_output['provider_selections'].items():
+        name_match = re.match(r'(.*?)/(.*?)/(.*)', path)
+        name = name_match.group(3) if name_match else path
+
+        yield f'+ provider {path} v{version}'
+        yield f'::set-output name={name}::{version}'
+
+
 if __name__ == '__main__':
     tf_output = sys.stdin.read()
 
-    print(tf_output)
+    try:
+        for line in convert_version_from_json(json.loads(tf_output)):
+            print(line)
+    except:
+        print(tf_output)
 
-    for line in convert_version(tf_output):
-        print(line)
+        for line in convert_version(tf_output):
+            print(line)

tests/version/test_version.py

@@ -1,4 +1,5 @@
-from convert_version import convert_version
+from convert_version import convert_version, convert_version_from_json
+
 
 def test_convert_version():
     tf_version_output = 'Terraform v0.12.28'
@@ -54,3 +55,25 @@ def test_convert_0_13_providers():
     ]
 
     assert list(convert_version(tf_version_output)) == expected
+
+def test_convert_0_13_json_providers():
+    tf_version_output = {
+      "terraform_version": "0.13.0",
+      "terraform_revision": "",
+      "provider_selections": {
+        "registry.terraform.io/hashicorp/random": "2.2.0",
+        "registry.terraform.io/terraform-providers/acme": "2.5.3"
+      },
+      "terraform_outdated": True
+    }
+
+    expected = [
+        'Terraform v0.13.0',
+        '::set-output name=terraform::0.13.0',
+        '+ provider registry.terraform.io/hashicorp/random v2.2.0',
+        '::set-output name=random::2.2.0',
+        '+ provider registry.terraform.io/terraform-providers/acme v2.5.3',
+        '::set-output name=acme::2.5.3'
+    ]
+
+    assert list(convert_version_from_json(tf_version_output)) == expected