Update serverless example to use SAR application

.gitignore

@@ -1,4 +1,5 @@
 .deno_dir
 .serverless
 node_modules
+package-lock.json
 *.zip

example/README.md

@@ -2,27 +2,20 @@
 
 Deploy in a single step using [`serverless deploy`](https://serverless.com/framework/docs/providers/aws/guide/deploying/).
 
-This example lambda application defines:
+This example lambda application defines in `serverless.yml`:
 
-- A lambda layer from the `deno-lambda-layer.zip`.
 - A DynamodDB table "candidates".
-- Three lambda functions a list/get/submit.
+- Three lambda functions list/get/submit in `api/candidate.ts`.
 - An API Gateway endpoint to these functions.
 
-Requires `deno-lambda-layer.zip` to be in the directory:
+Note: The `serverless-scriptable-plugin` is used to compile `api/candidate.ts` prior to upload
+so there is no init-time download/compilation step.
 
-    curl -sfL https://github.com/hayd/deno-lambda/releases/download/v0.4.0/deno-lambda-layer.zip -o deno-lambda-layer.zip
-
-This example is based on [_Building a REST API in Node.js with AWS Lambda, API Gateway, DynamoDB, and Serverless Framework_ blogpost by Shekhar Gulat](https://serverless.com/blog/node-rest-api-with-serverless-lambda-and-dynamodb/).
-
-See the application described in `serverless.yml` and the exported functions in `api/candidate.ts`.
-
-Note: The `serverless-scriptable-plugin` is used to compile `api/candidate.ts` so there is no init-time download/compilation step.
+```sh
+# Install serverless-scriptable-plugin:
+npm install --save-dev serverless-scriptable-plugin
+```
 
 ---
 
-TODO:
-
-- [ ] Should layer be a distinct template/directory? Each full deploy pushes a new version of the layer, ideally this shouldn't be the case.
-      https://serverless.com/blog/publish-aws-lambda-layers-serverless-framework/ ?
-- [ ] Tests are included, require local-dynamodb to be running. Should be part of CI.
+This example is based on [_Building a REST API in Node.js with AWS Lambda, API Gateway, DynamoDB, and Serverless Framework_ blogpost by Shekhar Gulat](https://serverless.com/blog/node-rest-api-with-serverless-lambda-and-dynamodb/).

example/client.ts

@@ -3,6 +3,7 @@ import { DynamoDBClient, createClient } from "./deps.ts";
 const conf = {
   accessKeyId: Deno.env("AWS_ACCESS_KEY_ID"),
   secretAccessKey: Deno.env("AWS_SECRET_ACCESS_KEY"),
+  sessionToken: () => Deno.env("AWS_SESSION_TOKEN"),
   region: Deno.env("AWS_REGION") || "local",
   port: Deno.env("AWS_REGION") ? 443 : 8000
 };

example/serverless.yml

@@ -16,13 +16,6 @@ provider:
       Resource:
         - Fn::GetAtt: [candidatesTable, Arn]
 
-layers:
-  deno:
-    description: "deno"
-    package:
-      artifact: deno-lambda-layer.zip
-# TODO extract this out so we don't redeploy the layer on each push.
-
 package:
   exclude:
     - .deno_dir/gen/file
@@ -34,7 +27,7 @@ functions:
   candidateSubmission:
     handler: api/candidate.submit
     layers:
-      - { Ref: DenoLambdaLayer }
+      - !GetAtt Deno.Outputs.DenoArn
     memorySize: 128
     description: Submit candidate info
     events:
@@ -45,7 +38,7 @@ functions:
   listCandidates:
     handler: api/candidate.list
     layers:
-      - { Ref: DenoLambdaLayer }
+      - !GetAtt Deno.Outputs.DenoArn
     memorySize: 128
     description: List all candidates
     events:
@@ -56,7 +49,7 @@ functions:
   candidateDetails:
     handler: api/candidate.get
     layers:
-      - { Ref: DenoLambdaLayer }
+      - !GetAtt Deno.Outputs.DenoArn
     memorySize: 128
     description: Get candidate by id
     events:
@@ -65,7 +58,15 @@ functions:
           method: get
 
 resources:
+  Transform: AWS::Serverless-2016-10-31
   Resources:
+    Deno:
+      Type: AWS::Serverless::Application
+      Properties:
+        Location:
+          ApplicationId: arn:aws:serverlessrepo:us-east-1:390065572566:applications/Deno
+          SemanticVersion: 0.7.0
+
     candidatesTable:
       Type: AWS::DynamoDB::Table
       Properties: