apex

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Published: Feb 6, 2016 License: MIT

README

Apex Serverless Architecture

Apex is a small tool for deploying and managing AWS Lambda functions. With shims for languages not yet supported by Lambda, you can use Golang out of the box.

Installation

Download binaries:

latest=$(curl -s https://api.github.com/repos/apex/apex/tags | grep name | head -n 1 | sed 's/[," ]//g' | cut -d ':' -f 2)
curl -sL https://github.com/apex/apex/releases/download/$latest/apex_darwin_amd64 -o /usr/local/bin/apex
chmod +x $_

Or from master:

go get github.com/apex/apex/cmd/apex

Or upgrading:

apex upgrade

Runtimes

Currently supports:

  • Nodejs
  • Golang
  • Python

Features

  • Supports languages Lambda does not natively support via shim, such as Go
  • Binary install (useful for continuous deployment in CI etc)
  • Hook support for running commands (transpile code, lint, etc)
  • Project level function and resource management
  • Configuration inheritance and overrides
  • Command-line function invocation with JSON streams
  • Transparently generates a zip for your deploy
  • Ignore deploying files with .apexignore
  • Function rollback support
  • Tail function CloudWatchLogs
  • Concurrency for quick deploys
  • Dry-run to preview changes

Example

Apex projects are made up of a project.json configuration file, and zero or more Lambda functions defined in the "functions" directory. Here's an example file structure:

project.json
functions
├── bar
│   ├── function.json
│   └── index.js
├── baz
│   ├── function.json
│   └── index.js
└── foo
    ├── function.json
    └── index.js

The project.json file defines project level configuration that applies to all functions, and defines dependencies. For this simple example the following will do:

{
  "name": "example",
  "description": "Example project"
}

Each function uses a function.json configuration file to define function-specific properties such as the runtime, amount of memory allocated, and timeout. This file is completely optional, as you can specify defaults in your project.json file. For example:

{
  "name": "bar",
  "description": "Node.js example function",
  "runtime": "nodejs",
  "memory": 128,
  "timeout": 5,
  "role": "arn:aws:iam::293503197324:role/lambda"
}

Now the directory structure for your project would be:

project.json
functions
├── bar
│   └── index.js
├── baz
│   └── index.js
└── foo
    └── index.js

Finally the source for the functions themselves look like this in Node.js:

console.log('start bar')
exports.handle = function(e, ctx) {
  ctx.succeed({ hello: 'bar' })
}

Or using the Golang Lambda package, Apex supports Golang out of the box with a Node.js shim:

package main

import (
  "encoding/json"

  "github.com/apex/go-apex"
)

type Message struct {
  Hello string `json:"hello"`
}

func main() {
  apex.HandleFunc(func(event json.RawMessage, ctx *apex.Context) (interface{}, error) {
    return &Message{"baz"}, nil
  })
}

Apex operates at the project level, but many commands allow you to specify specific functions. For example you may deploy the entire project with a single command:

$ apex deploy

Or whitelist functions to deploy:

$ apex deploy foo bar

Invoke it!

$ echo '{ "some": "data" }' | apex invoke foo
{ "hello": "foo" }

See the Documentation for more information.

Contributors

Badges

Build Status Slack Status GoDoc


tjholowaychuk.com  ·  GitHub @tj  ·  Twitter @tjholowaychuk

Directories

Path Synopsis
_examples
cmd
apex/build
Package build outputs a function's zip to stdout.
Package build outputs a function's zip to stdout.
apex/delete
Package delete resmove functions from Lambda.
Package delete resmove functions from Lambda.
apex/deploy
Package deploy builds & deploys function zips.
Package deploy builds & deploys function zips.
apex/docs
Package docs outputs Wiki documentation.
Package docs outputs Wiki documentation.
apex/invoke
Package invoke calls a Lambda function.
Package invoke calls a Lambda function.
apex/list
Package list outputs a list of Lambda function information.
Package list outputs a list of Lambda function information.
apex/logs
Package logs outputs logs from CloudWatch logs.
Package logs outputs logs from CloudWatch logs.
apex/metrics
Package metrics outputs metrics for a function.
Package metrics outputs metrics for a function.
apex/rollback
Package rollback implements function version rollback.
Package rollback implements function version rollback.
apex/upgrade
Package upgrade installs the latest stable binary of Apex.
Package upgrade installs the latest stable binary of Apex.
apex/version
Package version oututs the version.
Package version oututs the version.
Package colors is pretty cool.
Package colors is pretty cool.
Package docs outputs colored markdown for a given topic.
Package docs outputs colored markdown for a given topic.
Package dryrun implements the Lambda API in order to no-op changes, and display dry-run output.
Package dryrun implements the Lambda API in order to no-op changes, and display dry-run output.
Package function implements function-level operations.
Package function implements function-level operations.
Package logs implements AWS CloudWatchLogs tailing.
Package logs implements AWS CloudWatchLogs tailing.
Package metrics fetches CloudWatch metrics for a function.
Package metrics fetches CloudWatch metrics for a function.
plugins
env
Package env populates .env.json if the function has any environment variables defined.
Package env populates .env.json if the function has any environment variables defined.
golang
Package golang implements the "golang" runtime.
Package golang implements the "golang" runtime.
hooks
Package hooks implements hook script support.
Package hooks implements hook script support.
inference
Package inference adds file-based inference to detect runtimes when they are not explicitly specified.
Package inference adds file-based inference to detect runtimes when they are not explicitly specified.
nodejs
Package nodejs implements the "nodejs" runtime.
Package nodejs implements the "nodejs" runtime.
python
Package python implements the "python" runtime.
Package python implements the "python" runtime.
shim
Package shim adds a nodejs shim when the shim field is true, this is also used transparently in other plugins such as "golang" which are not directly supported by Lambda.
Package shim adds a nodejs shim when the shim field is true, this is also used transparently in other plugins such as "golang" which are not directly supported by Lambda.
Package project implements multi-function operations.
Package project implements multi-function operations.
Package shim provides a shim for running arbitrary languages on Lambda.
Package shim provides a shim for running arbitrary languages on Lambda.
Package upgrade fetches the latest Apex binary, if any, for the current platform.
Package upgrade fetches the latest Apex binary, if any, for the current platform.

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