Merge pull request #19 from RossyWhite/action

Add action.yml

.github/workflows/test.yaml

@@ -29,7 +29,18 @@ jobs:
             ${{ runner.os }}-go-
       - name: test
         run: go test -race -cover ./...
-      - name: install test
-        run: ./install.sh
+
+      - name: prepare install test
+        run: |
+          echo 'image: {{ tfstate "docker_image.ubuntu.name" }}' > input.yaml
+      - name: run composite action
+        uses: ./
+        with:
+          input: input.yaml
+          output: output.yaml
+          tfstate: cmd/testdata/terraform.tfstate
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: test output
+        run: |
+          diff output.yaml <(echo "image: ubuntu:latest")

action.yml

@@ -0,0 +1,24 @@
+name: "tfsubst action"
+author: "RossyWhite"
+description: "Substitute variables with tfstate values"
+inputs:
+  input:
+    description: 'File to run substitutions on'
+    required: true
+  output:
+    description: 'File to write result to'
+    required: true
+  tfstate:
+    description: 'Path to tfstate file'
+    required: true
+runs:
+  using: "composite"
+  steps:
+    - name: "Install tfsubst"
+      run: |
+        curl -sfL https://raw.githubusercontent.com/RossyWhite/tfsubst/main/install.sh | sh
+      shell: bash
+    - name: "Run tfsubst"
+      run: |
+        tfsubst < ${{ inputs.input }} -s ${{ inputs.tfstate }} > ${{ inputs.output }}
+      shell: bash

install.sh

@@ -56,15 +56,13 @@ fi
 
 asset_id=$(curl \
   -H "Accept: application/vnd.github+json" \
-  -H "Authorization: Bearer ${GITHUB_TOKEN}"\
   -H "X-GitHub-Api-Version: 2022-11-28" \
   -sSf https://api.github.com/repos/"${owner}"/"${repo}"/releases/"${version}" \
   | jq -r ".assets[] | select(.name == \"${file_name}\") | .id")
 
 echo "[1/3] Downloading ${file_name}"
 rm -f "${downloaded_file}"
 curl -fsSL -H "Accept: application/octet-stream" \
-  -H "Authorization: Bearer ${GITHUB_TOKEN}"\
   -H "X-GitHub-Api-Version: 2022-11-28" \
   https://api.github.com/repos/"${owner}"/"${repo}"/releases/assets/"${asset_id}" \
   -o "${downloaded_file}"