docs: development guide for integrating with AWS signature

docs/development.md

@@ -2,6 +2,23 @@
 
 ## Integrating with AWS Signature
 
+Update the following files when enhancing `nginx-lambda-gateway` to integrate with AWS signature whenever AWS releases a new version of signature or you have a new PR:
+
+- NGINX Proxy: [`/etc/nginx/conf.d/nginx_lambda_gateway.conf`](../common/etc/nginx/conf.d/nginx_lambda_gateway.conf)
+- AWS Credentials Lib: [`/etc/nginx/serverless/awscredentials.js`](../common/lambda-core/awscredentials.js)
+- AWS Signature Lib per version:
+  - [`/etc/nginx/include/awssig4.js`](../common/lambda-core/awssig4.js)
+- AWS Lambda Integration Lib: [`/etc/nginx/serverless/lambdagateway.js`](../common/lambda-core/lambdagateway.js)
+- Common reusable Lib for all of NJS: [`/etc/nginx/serverless/utils.js`](../common/lambda-core/utils.js)
+
+![](../docs/img/nginx-lambda-gateway-aws-signature-integration.png)
+
 ## Extending the Gateway
 
+### Extending gateway configuration
+
+- NGINX API gateway endpoints' configuration for Lambda integration: [`/etc/nginx/serverless/lambda_ngx_apis.conf`](../common/lambda-core/lambda_ngx_apis.conf)
+- NGINX configuration of importing NJS codebases and map directives for Lambda integration: [`/etc/nginx/serverless/lambda_ngx_http.conf`](../common/lambda-core/lambda_ngx_http.conf)
+- NGINX proxy configuration to be set before proxy_pass to invoke Lambda APIs: [`/etc/nginx/serverless/lambda_ngx_proxy.conf`](../common/lambda-core/lambda_ngx_proxy.conf)
+
 ### Examples

docs/getting_started.md

@@ -30,7 +30,7 @@
   | Name                       | Required? | Allowed Values  | Default                              | Description                                   |
   |----------------------------|-----------|-----------------|--------------------------------------|-----------------------------------------------|
   | `LAMBDA_REGION`            | Yes       |                 | `${AWS_REGION}`                      | Lambda region whose servers you want to send the requests |
-  | `LAMBDA_SERVER_PROTO`      | Yes       | `http`, `https` | `https`                              | Protocol to used connect to Lambda server     |
+  | `LAMBDA_SERVER_PROTO`      | Yes       | `http`, `https` | `https`                              | Protocol to connect to Lambda server          |
   | `LAMBDA_SERVER`            | Yes       |                 | `lambda.${AWS_REGION}.amazonaws.com` | Lambda host to connect to                     |
   | `LAMBDA_SERVER_PORT`       | Yes       |                 | `443`                                | SSL/TLS port to connect to                    |
   | `AWS_ACCESS_KEY_ID`        | No        |                 | `${AWS_ACCESS_KEY_ID}`               | AWS access key associated with an IAM account |
@@ -119,7 +119,7 @@
 
   ```bash
   curl --location 'http://localhost/2015-03-31/functions/foo/invocations' \
-       --header 'Content-Type: application/json' \
+       --header 'Content-Type: application/json'                          \
        --data '{ 
            "message": "This is a sample message" 
        }'