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Initial implementation (#1)
* Initial implementation * add usage example * add healthcheck * add missing vars * terraform fmt * fix typos * use latest terraform-terraform-label * use length to get number of members in list * get around computed count * revert listener computed count * fix arithmetic operands * comment out host-header for now * use 1 here for now * add back in length compute * update readme and remove hosts condition for now * remove backticks * fix repo name * use host or path conditional listeners * use boolean and
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‎LICENSE‎

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same "printed page" as the copyright notice for easier
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identification within third-party archives.
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Copyright [yyyy] [name of copyright owner]
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Copyright 2018 Cloud Posse, LLC
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.

‎README.md‎

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# terraform-aws-alb-ingress
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Terraform module to provision an HTTP style ingress based on hostname and path
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![Cloud Posse](https://cloudposse.com/logo-300x69.png)
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# terraform-aws-alb-ingress [![Build Status](https://travis-ci.org/cloudposse/terraform-aws-alb-ingress.svg?branch=master)](https://travis-ci.org/cloudposse/terraform-aws-alb-ingress) [![Slack Community](https://slack.cloudposse.com/badge.svg)](https://slack.cloudposse.com)
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A Terraform module to provision an HTTP style ingress based on hostname and path.
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## Usage
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```
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module "alb" {
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source = "git::https://github.com/cloudposse/terraform-aws-alb.git?ref=master"
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namespace = "eg"
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stage = "dev"
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name = "web"
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vpc_id = "..."
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}
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module "api_ingress" {
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source = "git::https://github.com/cloudposse/terraform-aws-alb-ingress.git?ref=master"
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namespace = "eg"
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stage = "dev"
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name = "web"
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attributes = "api"
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vpc_id = "..."
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target_group_arn = "${module.alb.default_target_group_arn}"
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paths = ["/api/*"]
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}
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module "blog_ingress" {
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source = "git::https://github.com/cloudposse/terraform-aws-alb-ingress.git?ref=master"
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namespace = "eg"
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stage = "dev"
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name = "web"
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attributes = "blog"
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vpc_id = "..."
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target_group_arn = "${module.alb.default_target_group_arn}"
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paths = ["/blog/*"]
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}
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module "blog_service" {
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source = "git::https://github.com/cloudposse/terraform-aws-ecs-alb-service-task.git?ref=0.1.0"
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namespace = "eg"
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stage = "dev"
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name = "blog"
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alb_target_group_arn = "${module.alb.default_target_group.arn}"
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container_definition_json = "${module.container_definition.json}"
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ecr_repository_name = "${module.ecr.repository_name}"
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ecs_cluster_arn = "${aws_ecs_cluster.default.arn}"
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launch_type = "FARGATE"
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vpc_id = "${module.vpc.vpc_id}"
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security_group_ids = ["${module.vpc.vpc_default_security_group_id}"]
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private_subnet_ids = "${module.dynamic_subnets.private_subnet_ids}"
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}
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```
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## Inputs
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| Name | Default | Description | Required |
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|:-----------------------------------|:---------------:|:---------------------------------------------------------------------------------|:--------:|
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| `namespace` | `` | Namespace (e.g. `cp` or `cloudposse`) | Yes |
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| `stage` | `` | Stage (e.g. `prod`, `dev`, `staging`) | Yes |
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| `name` | `` | Name (e.g. `app` or `cluster`) | Yes |
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| `target_group_arn` | `` | ALB target group ARN, if this is an empty string a new one will be generated | No |
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| `listener_arns` | `[]` | A list of ALB listener ARNs to attach ALB listener rule to | No |
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| `deregistration_delay` | `15` | The amount of time to wait in seconds while deregistering target | No |
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| `health_check_path` | `/` | The destination for the health check request | No |
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| `health_check_timeout` | `10` | The amount of time to wait in seconds before failing a health check request | No |
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| `health_check_healthy_threshold` | `2` | The number of consecutive health checks successes required before healthy | No |
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| `health_check_unhealthy_threshold` | `2` | The number of consecutive health check failures required before unhealthy | No |
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| `health_check_interval` | `15` | The duration in seconds in between health checks | No |
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| `health_check_matcher` | `200-399` | The HTTP response codes to indicate a healthy check | No |
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| `priority` | `100` | The priority for the rule between 1 and 50000 (1 being highest priority) | No |
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| `port` | `80` | The port for generated ALB target group (if target_group_arn not set) | No |
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| `protocol` | `HTTP` | The protocol for generated ALB target group (if target_group_arn not set) | No |
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| `vpc_id` | `` | The VPC ID where generated ALB target group (if target_group_arn not set) | No |
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| `paths` | `[]` | Path pattern to match (a maximum of 1 can be defined) | No |
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| `hosts` | `[]` | Hosts to match in Hosts header | No |
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| `attributes` | `[]` | Additional attributes (e.g. `1`) | No |
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| `tags` | `{}` | Additional tags (e.g. `map("BusinessUnit","XYZ")` | No |
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| `delimiter` | `-` | Delimiter to be used between `namespace`, `stage`, `name` and `attributes` | No |
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## Outputs
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| Name | Description |
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|:--------------------------------|:----------------------------------------------------------------|
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| `target_group_arn` | The target group ARN |
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## Help
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**Got a question?**
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File a GitHub [issue](https://github.com/cloudposse/terraform-aws-alb-ingress/issues), send us an [email](mailto:[email protected]) or reach out to us on [Slack](https://slack.cloudposse.com).
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## Contributing
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### Bug Reports & Feature Requests
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Please use the [issue tracker](https://github.com/cloudposse/terraform-aws-alb-ingress/issues) to report any bugs or file feature requests.
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### Developing
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If you are interested in being a contributor and want to get involved in developing `terraform-aws-alb-ingress`, we would love to hear from you! Shoot us an [email](mailto:[email protected]).
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In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.
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1. **Fork** the repo on GitHub
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2. **Clone** the project to your own machine
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3. **Commit** changes to your own branch
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4. **Push** your work back up to your fork
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5. Submit a **Pull request** so that we can review your changes
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**NOTE:** Be sure to merge the latest from "upstream" before making a pull request!
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## License
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[APACHE 2.0](LICENSE) © 2018 [Cloud Posse, LLC](https://cloudposse.com)
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See [LICENSE](LICENSE) for full details.
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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## About
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This project is maintained and funded by [Cloud Posse, LLC][website].
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![Cloud Posse](https://cloudposse.com/logo-300x69.png)
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Like it? Please let us know at <[email protected]>
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We love [Open Source Software](https://github.com/cloudposse/)!
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See [our other projects][community]
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or [hire us][hire] to help build your next cloud platform.
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[website]: https://cloudposse.com/
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[community]: https://github.com/cloudposse/
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[hire]: https://cloudposse.com/contact/
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## Contributors
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| [![Erik Osterman][erik_img]][erik_web]<br/>[Erik Osterman][erik_web] | [![Andriy Knysh][andriy_img]][andriy_web]<br/>[Andriy Knysh][andriy_web] |[![Igor Rodionov][igor_img]][igor_web]<br/>[Igor Rodionov][igor_img]|[![Sarkis Varozian][sarkis_img]][sarkis_web]<br/>[Sarkis Varozian][sarkis_web] |
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|-------------------------------------------------------|------------------------------------------------------------------|------------------------------------------------------------------|------------------------------------------------------------------|
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[erik_img]: http://s.gravatar.com/avatar/88c480d4f73b813904e00a5695a454cb?s=144
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[erik_web]: https://github.com/osterman/
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[andriy_img]: https://avatars0.githubusercontent.com/u/7356997?v=4&u=ed9ce1c9151d552d985bdf5546772e14ef7ab617&s=144
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[andriy_web]: https://github.com/aknysh/
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[igor_img]: http://s.gravatar.com/avatar/bc70834d32ed4517568a1feb0b9be7e2?s=144
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[igor_web]: https://github.com/goruha/
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[sarkis_img]: https://avatars3.githubusercontent.com/u/42673?s=144&v=4
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[sarkis_web]: https://github.com/sarkis/

‎main.tf‎

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locals {
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generate_target_group_arn = "${var.target_group_arn == "" ? 1 : 0}"
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}
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locals {
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target_group_arn = "${local.generate_target_group_arn ? aws_lb_target_group.default.arn : var.target_group_arn}"
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}
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module "default_label" {
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source = "git::https://github.com/cloudposse/terraform-terraform-label.git?ref=tags/0.1.3"
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enabled = "${local.generate_target_group_arn}"
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attributes = "${var.attributes}"
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delimiter = "${var.delimiter}"
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name = "${var.name}"
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namespace = "${var.namespace}"
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stage = "${var.stage}"
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tags = "${var.tags}"
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}
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resource "aws_lb_target_group" "default" {
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count = "${local.generate_target_group_arn}"
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name = "${module.default_label.id}"
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port = "${var.port}"
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protocol = "${var.protocol}"
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vpc_id = "${var.vpc_id}"
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target_type = "${var.target_type}"
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deregistration_delay = "${var.deregistration_delay}"
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health_check {
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path = "${var.health_check_path}"
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timeout = "${var.health_check_timeout}"
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healthy_threshold = "${var.health_check_healthy_threshold}"
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unhealthy_threshold = "${var.health_check_unhealthy_threshold}"
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interval = "${var.health_check_interval}"
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matcher = "${var.health_check_matcher}"
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}
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lifecycle {
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create_before_destroy = true
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}
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}
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resource "aws_lb_listener_rule" "paths" {
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count = "${length(var.paths) > 0 && length(var.hosts) == 0 ? length(var.listener_arns) : 0}"
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listener_arn = "${var.listener_arns[count.index]}"
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priority = "${var.priority + count.index}"
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action {
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type = "forward"
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target_group_arn = "${local.target_group_arn}"
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}
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condition {
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field = "path-pattern"
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values = ["${var.paths}"]
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}
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}
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resource "aws_lb_listener_rule" "hosts" {
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count = "${length(var.hosts) > 0 && length(var.paths) == 0 ? length(var.listener_arns) : 0}"
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listener_arn = "${var.listener_arns[count.index]}"
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priority = "${var.priority + count.index}"
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action {
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type = "forward"
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target_group_arn = "${local.target_group_arn}"
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}
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condition {
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field = "host-header"
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values = ["${var.hosts}"]
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}
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}
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resource "aws_lb_listener_rule" "hosts_paths" {
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count = "${length(var.paths) > 0 && length(var.hosts) > 0 ? length(var.listener_arns) : 0}"
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listener_arn = "${var.listener_arns[count.index]}"
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priority = "${var.priority + count.index}"
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action {
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type = "forward"
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target_group_arn = "${local.target_group_arn}"
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}
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condition {
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field = "host-header"
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values = ["${var.hosts}"]
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}
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condition {
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field = "path-pattern"
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values = ["${var.paths}"]
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}
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}

‎outputs.tf‎

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output "target_group_arn" {
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value = "${local.target_group_arn}"
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}

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