feature: trust a root certificate in an existing java truststore

README.md

@@ -1,2 +1,42 @@
-# action-template
-github action template
+# Add root certificate to java truststore
+
+Github action to add a root certificate in x509 format to an existing java truststore.
+
+usage example
+
+```yaml
+name: Main
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: runner
+    steps:
+      - name: Retrieve root ca certificate
+        id: get-ca-cert
+        uses: RouxAntoine/get-ca-cert@master
+
+      - run: |
+          echo "${{ steps.get-ca-cert.outputs.ca-cert }}"
+
+      - uses: actions/setup-java@v4
+        id: java
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+
+      - name: Add root certificate to java truststore
+        uses: RouxAntoine/add-ca-truststore@master
+        id: add-ca-to-truststore
+        with:
+          ca-cert: "${{ steps.get-ca-cert.outputs.ca-cert }}"
+          store-path: "${{ steps.java.outputs.path }}/lib/security/cacerts"
+
+      - run: |
+          echo "Auto generated alias name: ${{ steps.add-ca-to-truststore.outputs.certificate-alias }}"
+          keytool -list -cacerts
+```

action.yml

@@ -1,33 +1,53 @@
-name: 'Action-template'
-description: 'Github action template'
+name: "add-ca-truststore"
+description: 'Github action to add a root certificate to a java truststore'
 branding:
-  icon: file
-  color: orange
+  icon: upload
+  color: blue
 inputs:
-  sample-input:
-    description: 'input example'
-    default: 'default-value'
+  ca-cert:
+    description: 'root certificate to add to the truststore'
+    required: true
+  alias-name:
+    description: "alias name of the new added certificate"
     required: false
+    default: ""
+  store-path:
+    description: "java store path usually end with /cacert"
+    required: true
+  store-password:
+    description: "java store password"
+    required: false
+    default: "changeit"
+outputs:
+  certificate-alias:
+    value: ${{ steps.generate-alias-name.outputs.alias-name }}
+    description: "alias name of added certificate, generated if not provided as input"
+
 runs:
   using: "composite"
   steps:
-    - name: Set GitHub Path example
-      run: echo "$GITHUB_ACTION_PATH" >> $GITHUB_PATH
-      shell: bash
-      env:
-        GITHUB_ACTION_PATH: ${{ github.action_path }}
-
-    - name: Set Github secret output result example
-      id: sets-a-secret
+    - name: Generate random pet name
+      if: ${{ inputs.alias-name == '' }}
+      id: generate-pet-name
       shell: bash
       run: |
-        the_secret=$((RANDOM))
-        echo "::add-mask::$the_secret"
-        echo "secret-number=$the_secret" >> "$GITHUB_OUTPUT"
+        apt update
+        apt-get install -y golang-petname
+        pet_name=$(golang-petname)
         
-    - name: Set Github output result example
-      id: sets-output
+        echo "pet-name=$pet_name" >> "$GITHUB_OUTPUT"
+
+    - name: Defined alias name
+      id: generate-alias-name
       shell: bash
       run: |
-        output_number=$((RANDOM))
-        echo "output-number=$output_number" >> "$GITHUB_OUTPUT"
+        if [ "T${{ inputs.alias-name }}T" == "TT" ]; then
+          echo "alias-name=${{ steps.generate-pet-name.outputs.pet-name }}" >> "$GITHUB_OUTPUT"
+        else
+          echo "alias-name=${{ inputs.alias-name }}" >> "$GITHUB_OUTPUT"
+        fi
+
+    - name: Add certificate ${{ steps.generate-alias-name.outputs.alias-name }} to truststore
+      shell: bash
+      run: |
+        echo "${{ inputs.ca-cert }}" | keytool -import -noprompt -trustcacerts -alias ${{ steps.generate-alias-name.outputs.alias-name }} -keystore ${{ inputs.store-path }} -storepass ${{ inputs.store-password }}