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feat: Initial release
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PurpleBooth committed Oct 4, 2023
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7 changes: 7 additions & 0 deletions .editorconfig
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root = true

[*]
end_of_line = lf
insert_final_newline = true
indent_style = space
indent_size = 2
19 changes: 19 additions & 0 deletions .github/dependabot.yml
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version: 2
updates:
- package-ecosystem: github-actions
directory: /
schedule:
interval: daily
open-pull-requests-limit: 10
commit-message:
prefix: ci
include: "scope"
- package-ecosystem: terraform
directory: /
schedule:
interval: daily
open-pull-requests-limit: 10
commit-message:
prefix: fix
prefix-development: build
include: "scope"
16 changes: 16 additions & 0 deletions .github/mergify.yml
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pull_request_rules:
- name: "Automatic merge when CI passes"
conditions:
- author=dependabot[bot]
- check-success=check-conventional-commits / check-conventional-commits
actions:
queue:
method: merge

queue_rules:
- name: dep-update
batch_size: 10
batch_max_wait_time: 30 min
queue_conditions:
- author=dependabot[bot]
- check-success=check-conventional-commits / check-conventional-commits
29 changes: 29 additions & 0 deletions .github/workflows/pipeline.yml
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on:
push:
branches: ["*"]
pull_request:

jobs:
check-conventional-commits:
uses: armakuni/github-actions/.github/workflows/[email protected]

lint-pipeline:
uses: armakuni/github-actions/.github/workflows/[email protected]

generate-terraform-docs:
if: github.ref == 'refs/heads/main'
uses: armakuni/github-actions/.github/workflows/[email protected]
with:
output-file: README.md
# This artifact is referenced by the cog.toml
artifact-name: terraform-docs

create-release:
needs:
- check-conventional-commits
- lint-pipeline
if: github.ref == 'refs/heads/main'
uses: armakuni/github-actions/.github/workflows/[email protected]
secrets: inherit
with:
download-artifacts: true
44 changes: 44 additions & 0 deletions .gitignore
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### Terraform template
# Local .terraform directories
**/.terraform/*

# .tfstate files
*.tfstate
*.tfstate.*

# Crash log files
crash.log
crash.*.log

# Exclude all .tfvars files, which are likely to contain sensitive data, such as
# password, private keys, and other secrets. These should not be part of version
# control as they are data points which are potentially sensitive and subject
# to change depending on the environment.
*.tfvars
*.tfvars.json

# Ignore override files as they are usually used to override resources locally and so
# are not checked in
override.tf
override.tf.json
*_override.tf
*_override.tf.json

# Include override files you do wish to add to version control using negated pattern
# !example_override.tf

# Include tfplan files to ignore the plan output of command: terraform plan -out=tfplan
# example: *tfplan*

# Ignore CLI configuration files
.terraformrc
terraform.rc

### Terragrunt template
# terragrunt cache directories
**/.terragrunt-cache/*

# Terragrunt debug output file (when using `--terragrunt-debug` option)
# See: https://terragrunt.gruntwork.io/docs/reference/cli-options/#terragrunt-debug
terragrunt-debug.tfvars.json

21 changes: 21 additions & 0 deletions LICENSE
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MIT License

Copyright (c) 2023 Armakuni

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
57 changes: 57 additions & 0 deletions README.md
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# AWS Github Actions Self Hosted Runner

This module allows you to provision a self hosted runner which scales to 0 when not in use.

It is designed to be a "It just works" wrapper around that fantastic Philips Labs [terraform-aws-github-runner](https://github.com/philips-labs/terraform-aws-github-runner) module.

To get started, you need to create an organisation level GitHub App. This is a one time process and you can follow the [GitHub documentation](https://docs.github.com/en/developers/apps/creating-a-github-app) to do this.

The app should be installed into your organisation and you should have the following permissions in it:

- **Repository permissions**
- Administration: Read & write
- Checks: Read
- Metadata: Read-only
- Actions: Read-only
- **Organization permissions**
- Self-hosted runners: Read & write
- Webhooks: Read & write

You will need the:
* App ID
* App Install ID (you can find this in the URL when viewing the app in the GitHub UI)
* App Private Key (you can download this from the GitHub, keep it in PEM format)

<!-- BEGIN_TF_DOCS -->
## Requirements

No requirements.

## Providers

| Name | Version |
|------|---------|
| <a name="provider_aws"></a> [aws](#provider\_aws) | n/a |

## Modules

No modules.

## Resources

| Name | Type |
|------|------|
| [aws_iam_openid_connect_provider.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_openid_connect_provider) | resource |

## Inputs

| Name | Description | Type | Default | Required |
|------|-------------|------|---------|:--------:|
| <a name="input_github_thumbprint"></a> [github\_thumbprint](#input\_github\_thumbprint) | GitHub OpenID TLS certificate thumbprint (the default is the current value) | `string` | `"6938fd4d98bab03faadb97b34396831e3780aea1"` | no |

## Outputs

| Name | Description |
|------|-------------|
| <a name="output_arn"></a> [arn](#output\_arn) | n/a |
<!-- END_TF_DOCS -->
27 changes: 27 additions & 0 deletions cog.toml
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tag_prefix = "v"
from_latest_tag = false
ignore_merge_commits = true
branch_whitelist = ["main"]
pre_bump_hooks = [
# In the pipeline, this will be created by a preceding job
"mv ../terraform-docs/README.md README.md"
]
post_bump_hooks = [
"git push",
"git push origin v{{version}}",
]
pre_package_bump_hooks = []
post_package_bump_hooks = []

[git_hooks]

[commit_types]

[changelog]
path = "CHANGELOG.md"
template = "remote"
remote = "github.com"
repository = "terraform-aws-github-actions-oidc-provider"
owner = "armakuni"

authors = []
12 changes: 12 additions & 0 deletions data.tf
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data "aws_availability_zones" "available" {
filter {
name = "state"
values = ["available"]
}
filter {
name = "region-name"
values = [var.aws_region]
}

}
10 changes: 10 additions & 0 deletions locals.tf
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locals {
aws_lambda_s3_bucket_name = "${var.aws_resource_prefix}-lambda-sources"
aws_lambda_s3_syncer_key = "runner-binaries-syncer.zip"
aws_lambda_s3_runners_key = "runners.zip"
aws_lambda_s3_webhook_key = "webhook.zip"

az_count = var.aws_vpc_cidr.azs_count
azs = slice(data.aws_availability_zones.available.names, 0, local.az_count)
gh_key_pem_b64 = base64encode(var.github_app_key)
}
68 changes: 68 additions & 0 deletions main.tf
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resource "random_id" "webhook_secret" {
byte_length = 20
}

module "vpc" {
source = "terraform-aws-modules/vpc/aws"
version = "5.1.2"

name = "${var.aws_resource_prefix}-vpc"
cidr = var.aws_vpc_cidr.cidr

azs = local.azs
private_subnets = [for k, v in local.azs : cidrsubnet(var.aws_vpc_cidr.cidr, var.aws_vpc_cidr.newbits, k)]
public_subnets = [
for k, v in local.azs : cidrsubnet(var.aws_vpc_cidr.cidr, var.aws_vpc_cidr.newbits, var.aws_vpc_cidr.azs_count + k)
]

enable_dns_hostnames = true
enable_nat_gateway = true
map_public_ip_on_launch = false
single_nat_gateway = true
}


module "github_runner" {
depends_on = [module.runners_zip, module.webhook_zip, module.syncer_zip]
source = "philips-labs/github-runner/aws"
version = "4.4.1"

aws_region = var.aws_region
vpc_id = module.vpc.vpc_id
subnet_ids = module.vpc.private_subnets
create_service_linked_role_spot = true

prefix = var.aws_resource_prefix

github_app = {
id = var.github_app_id
key_base64 = local.gh_key_pem_b64
webhook_secret = random_id.webhook_secret.hex
}

enable_organization_runners = true

lambda_s3_bucket = local.aws_lambda_s3_bucket_name
webhook_lambda_s3_key = local.aws_lambda_s3_webhook_key
runners_lambda_s3_key = local.aws_lambda_s3_runners_key
syncer_lambda_s3_key = local.aws_lambda_s3_syncer_key

userdata_template = var.userdata_template
ami_owners = [var.ami_owner_filter] # Canonical's Amazon account ID

ami_filter = {
name = [var.ami_name_filter],
state = ["available"]
}
}

resource "github_organization_webhook" "webhook" {
events = [
"workflow_job",
]
configuration {
url = module.github_runner.webhook["endpoint"]
content_type = "json"
secret = random_id.webhook_secret.hex
}
}
34 changes: 34 additions & 0 deletions providers.tf
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terraform {
required_providers {
aws = {
source = "hashicorp/aws"
version = "~> 5.18.1"
}

github = {
source = "integrations/github"
version = "~> 5.0"
}
random = {
source = "hashicorp/random"
version = "~> 3.5.1"
}
local = {
source = "hashicorp/local"
version = "~> 2.4.0"
}
http = {
source = "hashicorp/http"
version = "~> 3.4.0 "
}
}
}

provider "github" {
owner = var.github_organisation
app_auth {
id = var.github_app_id
installation_id = var.github_app_install_id
pem_file = var.github_app_key
}
}
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