Convert to composite action and use cache dir (#55)

Switch to composite action so we can get rid of Javascript and install
cr to the cache location.

Signed-off-by: Reinhard Nägele <unguiculus@gmail.com>

README.md

@@ -15,7 +15,7 @@ A GitHub action to turn a GitHub project into a self-hosted Helm chart repo, usi
 
 For more information on inputs, see the [API Documentation](https://developer.github.com/v3/repos/releases/#input)
 
-- `version`: The chart-releaser version to use (default: v1.0.0)
+- `version`: The chart-releaser version to use (default: v1.1.1)
 - `config`: Optional config file for chart-releaser
 - `charts_dir`: The charts directory
 - `charts_repo_url`: The GitHub Pages URL to the charts repo (default: `https://<owner>.github.io/<project>`)
@@ -46,8 +46,13 @@ jobs:
           git config user.name "$GITHUB_ACTOR"
           git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
 
+      - name: Install Helm
+        uses: azure/setup-helm@v1
+        with:
+          version: v3.4.0
+
       - name: Run chart-releaser
-        uses: helm/chart-releaser-action@v1.0.0
+        uses: helm/chart-releaser-action@v1.1.1
         env:
           CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
 ```

action.yml

@@ -6,15 +6,35 @@ branding:
   icon: anchor
 inputs:
   version:
-    description: "The chart-releaser version to use (default: v1.0.0)"
+    description: "The chart-releaser version to use (default: v1.1.1)"
   config:
     description: "The relative path to the chart-releaser config file"
   charts_dir:
     description: The charts directory
     default: charts
   charts_repo_url:
     description: "The GitHub Pages URL to the charts repo (default: https://<owner>.github.io/<repo>)"
-    required: true
 runs:
-  using: "node12"
-  main: "main.js"
+  using: composite
+  steps:
+    - run: |
+        owner=$(cut -d '/' -f 1 <<< "$GITHUB_REPOSITORY")
+        repo=$(cut -d '/' -f 2 <<< "$GITHUB_REPOSITORY")
+
+        args=(--owner "$owner" --repo "$repo")
+        args+=(--charts-dir "${{ inputs.charts_dir }}")
+
+        if [[ -n "${{ inputs.version }}" ]]; then
+            args+=(--version "${{ inputs.version }}")
+        fi
+
+        if [[ -n "${{ inputs.config }}" ]]; then
+            args+=(--config "${{ inputs.config }}")
+        fi
+
+        if [[ -n "${{ inputs.charts_repo_url }}" ]]; then
+            args+=(--charts-repo-url "${{ inputs.charts_repo_url }}")
+        fi
+
+        "$GITHUB_ACTION_PATH/cr.sh" "${args[@]}"
+      shell: bash

cr.sh

@@ -18,7 +18,7 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-DEFAULT_CHART_RELEASER_VERSION=v1.1.0
+DEFAULT_CHART_RELEASER_VERSION=v1.1.1
 
 show_help() {
 cat << EOF
@@ -177,11 +177,26 @@ parse_command_line() {
 }
 
 install_chart_releaser() {
-    echo "Installing chart-releaser..."
+    if [[ ! -d "$RUNNER_TOOL_CACHE" ]]; then
+        echo "Cache directory '$RUNNER_TOOL_CACHE' does not exist" >&2
+        exit 1
+    fi
+
+    local arch
+    arch=$(uname -m)
 
-    curl -sSLo cr.tar.gz "https://github.com/helm/chart-releaser/releases/download/$version/chart-releaser_${version#v}_linux_amd64.tar.gz"
-    tar -xzf cr.tar.gz
-    sudo mv cr /usr/local/bin/cr
+    local cache_dir="$RUNNER_TOOL_CACHE/ct/$version/$arch"
+    if [[ ! -d "$cache_dir" ]]; then
+        mkdir -p "$cache_dir"
+
+        echo "Installing chart-releaser..."
+        curl -sSLo cr.tar.gz "https://github.com/helm/chart-releaser/releases/download/$version/chart-releaser_${version#v}_linux_amd64.tar.gz"
+        tar -xzf cr.tar.gz -C "$cache_dir"
+        rm -f cr.tar.gz
+
+        echo 'Adding cr directory to PATH...'
+        export PATH="$cache_dir:$PATH"
+    fi
 }
 
 lookup_latest_tag() {
@@ -219,7 +234,7 @@ lookup_changed_charts() {
 package_chart() {
     local chart="$1"
 
-    local args=(--package-path .cr-release-packages)
+    local args=("$chart" --package-path .cr-release-packages)
     if [[ -n "$config" ]]; then
         args+=(--config "$config")
     fi