Add charming actions (#59)

* add charming actions

* update libs

.github/workflows/integrate.yaml

@@ -1,12 +1,28 @@
+# reusable workflow triggered by other actions
 name: CI
 
 on:
-  push:
-    branches:
-      - master
-  pull_request:
+  workflow_call:
+    secrets:
+      charmcraft-credentials:
+        required: true
 
 jobs:
+
+  lib-check:
+    name: Check libraries
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Check libs
+        uses: canonical/charming-actions/[email protected]
+        with:
+          credentials: "${{ secrets.charmcraft-credentials }}"
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+
   lint:
     name: Lint Code
     runs-on: ubuntu-latest

.github/workflows/on_pull_request.yaml

@@ -0,0 +1,23 @@
+name: Test and publish to branch
+
+# On pull_request, we:
+# * always publish to charmhub at latest/edge/branchname
+# * always run tests
+
+on:
+  pull_request:
+
+jobs:
+
+  tests:
+    name: Run Tests
+    uses: ./.github/workflows/integrate.yaml
+    secrets:
+      charmcraft-credentials: "${{ secrets.CHARMCRAFT_CREDENTIALS }}"
+
+  # publish runs in parallel with tests, as we always publish in this situation
+  publish-charm:
+    name: Publish Charm
+    uses: ./.github/workflows/publish.yaml
+    secrets:
+      charmcraft-credentials: "${{ secrets.CHARMCRAFT_CREDENTIALS }}"

.github/workflows/on_push.yaml

@@ -0,0 +1,31 @@
+name: Publish to edge if tests passed
+
+# On push to a "special" branch, we:
+# * always publish to charmhub at latest/edge/branchname
+# * always run tests
+# where a "special" branch is one of main/master or track/**, as
+# by convention these branches are the source for a corresponding
+# charmhub edge channel.
+
+on:
+  push:
+    branches:
+      - master
+      - main
+      - track/**
+
+jobs:
+
+  tests:
+    name: Run Tests
+    uses: ./.github/workflows/integrate.yaml
+    secrets:
+      charmcraft-credentials: "${{ secrets.CHARMCRAFT_CREDENTIALS }}"
+
+  # publish runs in series with tests, and only publishes if tests passes
+  publish-charm:
+    name: Publish Charm
+    needs: tests
+    uses: ./.github/workflows/publish.yaml
+    secrets:
+      charmcraft-credentials: "${{ secrets.CHARMCRAFT_CREDENTIALS }}"

.github/workflows/publish.yaml

@@ -1,27 +1,28 @@
+# reusable workflow triggered by other actions
 name: Publish
 
 on:
-  push:
-    branches:
-      - master
-      - main
-      - track/**
-  pull_request:
-    branches:
-      - master
-      - main
-      - track/**
+  workflow_call:
+    secrets:
+      charmcraft-credentials:
+        required: true
 
 jobs:
+
   publish-charm:
     name: Publish Charm
     runs-on: ubuntu-latest
-    # Only publish to charmhub if we are pushing to a special branch or running PRs from something named `branch/*`
-    if: (github.event_name == 'push') ||  (startsWith( github.head_ref, 'branch/' ))
     steps:
-      - uses: actions/checkout@v2
-      - uses: canonical/[email protected]
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Select charmhub channel
+        uses: canonical/charming-actions/[email protected]
+        id: channel
+      - name: Upload charm to charmhub
+        uses: canonical/charming-actions/[email protected]
         with:
-          credentials: ${{ secrets.CHARMCRAFT_CREDENTIALS }}
-          charm-path: ./
-          charmcraft-channel: latest/edge
+          credentials: "${{ secrets.charmcraft-credentials }}"
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+          channel: "${{ steps.channel.outputs.name }}"

.github/workflows/release.yaml

@@ -0,0 +1,26 @@
+# reusable workflow triggered manually
+name: Release charm to other tracks and channels
+
+on:
+  workflow_dispatch:
+    inputs:
+      destination-channel:
+        description: 'Destination Channel'
+        required: true
+      origin-channel:
+        description: 'Origin Channel'
+        required: true
+
+jobs:
+  promote-charm:
+    name: Promote charm
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Release charm to channel
+        uses: canonical/charming-actions/[email protected]
+        with:
+          credentials: ${{ secrets.CHARMCRAFT_CREDENTIALS }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          destination-channel: ${{ github.event.inputs.destination-channel }}
+          origin-channel: ${{ github.event.inputs.origin-channel }}