Adds updating lambda aliases to lambda deploys

.github/workflows/deploy-lambda-function.yml

@@ -70,6 +70,18 @@ on:
         description: 'If true, a lambda version will be published'
         type: boolean
         default: true
+      version-description:
+        description: 'The description of the version being published (if publish-version is true)'
+        type: string
+        default: ${{ github.sha }}
+      update-alias:
+        description: 'If true, the alias will be updated to the new version'
+        type: boolean
+        default: false
+      alias-name:
+        description: 'The name of the alias to update. Required if update-alias is true'
+        type: string
+        default: ''
 
       # s3 options
       upload-to-s3:
@@ -186,14 +198,17 @@ jobs:
       # deploy
       - name: 'Deploy'
         id: deploy
-        uses: shopsmart/github-actions/actions/deploy-lambda-function@v3
+        uses: shopsmart/github-actions/actions/deploy-lambda-function@feature/lambda-update-alias
         with:
           zip-file: ${{ inputs.pattern }}
           function-name: ${{ inputs.function-name }}
           function-tags: |
             version=${{ inputs.version }}
             ${{ inputs.function-tags }}
           publish-version: ${{ inputs.publish-version }}
+          version-description: ${{ inputs.version-description || inputs.version }}
+          update-alias: ${{ inputs.update-alias }}
+          alias-name: ${{ inputs.alias-name }}
           upload-to-s3: ${{ inputs.upload-to-s3 }}
           s3-bucket: ${{ inputs.s3-bucket }}
           s3-key: ${{ inputs.s3-key }}

actions/deploy-lambda-function/action.yml

@@ -24,6 +24,15 @@ inputs:
   publish-version:
     description: If true, a lambda version will be published
     default: 'true'
+  version-description:
+    description: 'The description of the version being published (if publish-version is true)'
+    default: ${{ github.sha }}
+  update-alias:
+    description: 'If true, the alias will be updated to the new version.  Also requires publish-version to be true'
+    default: 'false'
+  alias-name:
+    description: 'The name of the alias to update. Required if update-alias is true'
+    default: ''
 
   # s3 options
   upload-to-s3:
@@ -74,4 +83,9 @@ runs:
       id: publish-version
       if: inputs.publish-version == 'true'
       shell: bash
-      run: ${{ github.action_path }}/version-lambda.sh "${{ inputs.function-name }}" "${{ inputs.tag || github.sha }}"
+      run: ${{ github.action_path }}/version-lambda.sh "${{ inputs.function-name }}" "${{ inputs.version-description || github.sha }}"
+
+    - name: 'Update the alias'
+      if: inputs.update-alias == 'true' && inputs.publish-version == 'true'
+      shell: bash
+      run: ${{ github.action_path }}/update-alias.sh "${{ inputs.function-name }}" "${{ inputs.alias-name }}" "${{ steps.publish-version.outputs.version }}"

actions/deploy-lambda-function/update-alias.bats

@@ -0,0 +1,44 @@
+#!/usr/bin/env bats
+
+load update-alias.sh
+
+function setup() {
+  export AWS_CMD_FILE="$BATS_TEST_TMPDIR/aws.cmd"
+  export -f aws
+
+  export GITHUB_OUTPUT="$BATS_TEST_TMPDIR/output.txt"
+}
+
+function teardown() {
+  rm -f "$AWS_CMD_FILE"
+}
+
+function aws() {
+  echo "$*" > "$AWS_CMD_FILE"
+}
+
+@test "it should require the function name" {
+  run update-alias
+
+  [ "$status" -ne 0 ]
+}
+
+@test "it should require the alias name" {
+  run update-alias my-function
+
+  [ "$status" -ne 0 ]
+}
+
+@test "it should require the version" {
+  run update-alias my-function my-alias
+
+  [ "$status" -ne 0 ]
+}
+
+@test "it should update the alias" {
+  run update-alias my-function my-alias 1
+
+  [ "$status" -eq 0 ]
+  [ -f "$AWS_CMD_FILE" ]
+  [ "$(< "$AWS_CMD_FILE")" = "lambda update-alias --function-name my-function --name my-alias --function-version 1 --no-cli-pager" ]
+}

actions/deploy-lambda-function/update-alias.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+function update-alias() {
+  set -eo pipefail
+
+  local function_name="${1:-}"
+  [ -n "$function_name" ] || {
+    echo "[ERROR] Function name not provided" >&2
+    return 1
+  }
+
+  local alias_name="${2:-}"
+  [ -n "$alias_name" ] || {
+    echo "[ERROR] Alias name not provided" >&2
+    return 2
+  }
+
+  local version="${3:-}"
+  [ -n "$version" ] || {
+    echo "[ERROR] Version not provided" >&2
+    return 2
+  }
+
+  aws lambda update-alias \
+    --function-name "$function_name" \
+    --name "$alias_name" \
+    --function-version "$version" \
+    --no-cli-pager
+}
+
+if [ "${BASH_SOURCE[0]}" = "$0" ]; then
+  set -u
+
+  update-alias "${@:-}"
+  exit $?
+fi