ci: Check Go mod and OSS licenses for good measure

Author: antoineco

.github/workflows/generated.yaml

@@ -0,0 +1,41 @@
+name: Generated Files
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+
+  gomod:
+    name: Go Modules
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: '1.17'
+
+    - name: Go caches
+      uses: actions/cache@v2
+      with:
+        path: |
+          ~/go/pkg/mod
+        key: ${{ github.job }}-${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ github.job }}-${{ runner.os }}-go-
+
+    - name: Check modules requirements
+      run: |
+        go mod tidy
+
+        git_status="$(git status --porcelain)"
+        if [[ ${git_status} ]]; then
+            echo -e 'Go modules are out-of-date. Please run `go mod tidy`\n'
+            echo "${git_status}"
+            exit 1
+        fi

.github/workflows/licenses.yaml

@@ -0,0 +1,45 @@
+name: OSS Licenses
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+
+  vendor:
+    name: Third-Party Licenses
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: '1.17'
+
+    - name: Go caches
+      uses: actions/cache@v2
+      with:
+        path: |
+          ~/.cache/go-build
+          ~/go/pkg/mod
+        key: ${{ github.job }}-${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ github.job }}-${{ runner.os }}-go-
+
+    - name: Install go-licenses
+      run: go install github.com/google/go-licenses@latest
+
+    - name: Check third-party licenses
+      run: |
+        go-licenses save ./... --save_path LICENSES/vendor/ --force
+
+        git_status="$(git status --porcelain)"
+        if [[ ${git_status} ]]; then
+            echo -e 'Third-party licenses are out-of-date. Please run `go-licenses save`\n'
+            echo "${git_status}"
+            exit 1
+        fi