Node Applications conversor to Function as a Service (FaaS) Deployments.

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Versions

• 0.2.0 - 2021,Oct
  1. AWS:
  • Add CloudWatch automatic integration;
  • Update runtime from nodejs10.x (deprecated) to nodejs14.x.
  1. FaaS zip file generated with dependencies (node_modules);
  2. Replacing package Request (deprecated) by Axios
  3. Automatically add Axios in generated app package.json
  4. Parameters passed via POST
  5. New annotation feature: force / skip publication on FaaS
• 0.1.1 - 2020,Nov
  1. Minor bug corrections;
  2. Graphics on evaluations;
  3. Readme Update
• 0.1.0 - 2019,Dec
  1. Add multicloud orchestrator (Terraform) with support to AWS, GCP and Azure FaaS services;
  2. Function pre-analysis;
• 0.0.1 - 2018,Dec
  1. Initial Release

Purpose

This framework intend to help NodeJS developers to migrate from monolith model to function as a service (serverless) model. It parses the original code looking for exported functions and creates an equivalent function on the provider. Instead of the original function is placed a restAPI request to FaaS.

Pre-Requisites

To use this conversor you need to have an active account in one of this FaaS services:

• Amazon AWS Lambda;
• Google Functions;
• Microsoft Azure Functions.

Get credentials parameters on AWS

• Log in to your AWS Management Console.
• Click on your user name at the top right of the page.
• Click on the Security Credentials link from the drop-down menu.
• Find the Access Credentials section, and copy the latest Access Key ID.
• Click on the Show link in the same row, and copy the Secret Access Key.

You should obtain this parameters:

• access_key_id
• secret_access_key

Get credentials parameters on Azure

You should obtain this parameters:

• subscription_id
• azure_tenant_id
• azure_client_id
• azure_client_secret

Follow this instructions: click

Get credentials parameters on GCP

• Create a service account and set permissions to operate the Compute Engine and VPC Networks.

You should obtain a JSON file with this parameters:

• client_x509_cert_url
• client_email
• client_id
• project_id
• private_key_id
• zone

The JSON file location will be prompted by the framework during its process.

Workflow

Conversion Process

Framework Composition

Installation

npm install node2faas

or

git clone https://github.com/node2faas/framework.git

cd node2faas

npm link

Usage

• Run: node2faas --help on your terminal to get the CLI Instructions

• Run: node2faas --target [/path/to/original/application]

• Follow de conversor instructions

• After proccess, check the directory output and your application converted to operate with FaaS should be there.

Features

• Convert only .js files (other file types are skipped)
• Stores provider credentials after first execution (don't ask again)
• Creates new FaaS function on the choose provider
• Creates all provider API Gateway resources
• Annotations (add a comment anywhere inside function definition)
  • Skip publication:
    • //@node2faas-skip
  • Force publication:
    • //@node2faas-force

Limitations

The framework is prepared to work only with:

• Providers:
  • AWS Lambda
  • GCP Functions
  • Azure Functions
• Function types:
  • exported
    • Ex: exports.functionName = function(params) { ... }

Examples

This project contains some examples to guide you. Look inside examples folder.

Overload example

• available in path: examples/mocked/bounds

The load example explores 3 potential function loads:

• Memory -> process with high memory consumption
• CPU -> process with high CPU consumption
• I/O -> process with high I/O consumption

Evaluations

Tests without orchestrator

• 1 to 100 concurrent requests to each service (traditional and converted)
• Simple Test (simple math operations)
• CPU stress Test (multiple cycles of simple operations)
• Memory stress Test (multiple cycles of writing on memory operations)
• I/O stress Test (multiple cycles of writing on disk operations)
• All data generated in this evaluation is available in path: evaluations/preliminary/outputs
• Files generated have this structure: [initial timestamp in nanoseconds],[final timestamp in nanoseconds],[duration in nanoseconds],[output from service]

Test Architecture

Results of Simple Test

Results of CPU Stress Test

Results of Memory Stress Test

Results of Memory I/O Test

Tests with Terraform as orchestrator

• CPU stress Test (multiple cycles of simple operations)
• Memory stress Test (multiple cycles of writing on memory operations)
• I/O stress Test (multiple cycles of writing on disk operations)

Parameters

• All data generated in this evaluation is available in path: evaluations/conclusive/results

• A list of test case was generated using the parameters. This table is available in file: evaluation/conclusive/test_cases.csv

• Files generated have this structure: [id test case],[sequence],[test output],[duration in nanoseconds]

Results of CPU Bound Test

Results of Memory Bound Test

Results of I/O Bound Test

Reliability rates

Minimal and maximal execution time

Publications

• 2019, May => CLOSER, Heraklion, Greece (paper)

• 2020, May => CLOSER, Online Streaming (paper)

• 2020, Nov => CCGRID, Melbourne, Australia (paper)

Support

If you need more information, please send a message to: [email protected]