lambda layer

Author: gojko

.gitignore

@@ -1 +1,2 @@
 node_modules
+build

Makefile

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+DEPLOYMENT_BUCKET_NAME := claudia-layers
+DEPLOYMENT_KEY := $(shell echo pandoc-$$RANDOM.zip)
+STACK_NAME := pandoc-lambda-layer
+
+clean: 
+	rm -rf build
+
+build/bin/pandoc: vendor/pandoc.gz
+	mkdir -p build/bin
+	cp vendor/pandoc.gz build/bin
+	gzip -d build/bin/pandoc.gz
+
+build/layer.zip: build/bin/pandoc
+	cd build && zip -r layer.zip bin
+
+# cloudformation has no support for packaging layers yet, so need to do this manually
+#
+build/output.yml: build/layer.zip cloudformation/template.yml
+	aws s3 cp build/layer.zip s3://$(DEPLOYMENT_BUCKET_NAME)/$(DEPLOYMENT_KEY)
+	sed "s:DEPLOYMENT_BUCKET_NAME:$(DEPLOYMENT_BUCKET_NAME):;s:DEPLOYMENT_KEY:$(DEPLOYMENT_KEY):" cloudformation/template.yml > build/output.yml
+
+deploy: build/output.yml
+	aws cloudformation deploy --template-file build/output.yml --stack-name $(STACK_NAME)
+	aws cloudformation describe-stacks --stack-name $(STACK_NAME) --query Stacks[].Outputs[].OutputValue --output text
+

README.md

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 # Pandoc for AWS Lambda
 
-This is a binary package and a Node.js wrapper for a precompiled version of [Pandoc](http://pandoc.org/) for the Amazon Linux machine image used by AWS Lambda. It can help you get started quickly with Pandoc inside Lambda functions.
+This is a precompiled version of [Pandoc](http://pandoc.org/) for the Amazon Linux machine image used by AWS Lambda, deployable as an AWS lambda layer. It can help you get started quickly with Pandoc inside Lambda functions.
 
 Check out the [Running Pandoc on Lambda Guide](https://claudiajs.com/tutorials/pandoc-lambda.html) for information on how this binary was produced, and how to compile a different version yourself with modified options.
 
-## Usage without Node.js
-
-To use without Node.js, grab the binary from [vendor/pandoc.gz](vendor/pandoc.gz) and upload to Lambda yourself. This is gzipped to save space, so unpack it first before executing.
-
-## Usage from Node.js
-
-Include the `pandoc-aws-lambda-binary` package using NPM, and make sure to package it with your Lambda function code:
-
-```bash
-npm install pandoc-aws-lambda-binary -S
-```
-
-Require and call the NPM package function from your Lambda code:
-
-
-```js
-var pandoc = require('pandoc-aws-lambda-binary');
-
-var resultPromise = pandoc(inputFilePath, outputFilePath, additionalOptions);
-```
-
-### Options 
-
-* `inputFilePath`: `string` -- file you want to convert
-* `outputFilePath`: `string` -- path to save the results
-* `additionalOptions`: `array` -- any other options you want to pass to the pandoc executable
-
-The options will be concatenated into a command such as `pandoc inputFilePath -o outputFilePath additionalOptions`.
-
-### Return value
-
-The `pandoc` function is asynchronous and returns a JavaScript Promise, that will be resolved or rejected depending on the results of the command execution.
-
-### Full Example
-
-Check out the [Pandoc S3 Converter Example Project](https://github.com/claudiajs/example-projects/tree/master/pandoc-s3-converter) to see how to wire everything up into a Lambda function.
-
-## Local usage
-
-To run this in local tests, define a `PANDOC_PATH` environment variable and set it to your local Pandoc executable. It will then use the provided executable instead of unpacking the Lambda binary
-
 ## Version information
 
 Compiled for [`ami-4fffc83`](https://console.aws.amazon.com/ec2/v2/home?region=us-east-1#Images:visibility=public-images;search=amzn-ami-hvm-2017.03.1.20170812-x86_64-gp2;sort=name), for Linux kernel version 4.9.38-16.35.amzn1.x86_64.

cloudformation/template.yml

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+Description: Pandoc AWS Lambda Layer 
+
+Resources:
+  PandocLayer:
+    Type: AWS::Lambda::LayerVersion
+    Properties:
+      CompatibleRuntimes:
+        - nodejs8.10
+      Description: Pandoc for AWS Lambda
+      LayerName: pandoc
+      LicenseInfo: GPL-2.0-or-later
+      Content:
+        S3Bucket: DEPLOYMENT_BUCKET_NAME
+        S3Key: DEPLOYMENT_KEY
+
+Outputs:
+  PandocLayer: 
+    Value: !Ref PandocLayer