feat: datadog-synthetics-monitor + checks

.github/CODEOWNERS

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+* @gorillamoe

.github/release.yml

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+changelog:
+  exclude:
+    labels:
+      - ignore-for-release
+  categories:
+    - title: Breaking Changes 💥
+      labels:
+        - breaking-change
+    - title: Documentation 📚
+      labels:
+        - documentation
+    - title: Exciting New Features ✨
+      labels:
+        - enhancement
+    - title: Bug Fixes 🐛
+      labels:
+        - bug

.github/workflows/checker.yml

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+---
+name: Checker 😎
+
+on: [pull_request, push]
+
+jobs:
+  pr-checker:
+    name: Checker 😎
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout & Setup Tofu
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: opentofu/setup-opentofu@v1
+        with:
+          tofu_version: 1.8.1
+      - name: Check if tofu files are correctly formatted
+        run: ./scripts/check-tofu-format.sh

.github/workflows/release.yml

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+---
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+'
+jobs:
+  create-release:
+    name: Create Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Set up env
+        run: |
+          VERSION=${GITHUB_REF_NAME#v}
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
+      - name: Create Release
+        run: ./scripts/release.sh
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

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+*.tfstate
+.terraform
+.env

.yamllint.yaml

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+---
+extends: default
+rules:
+  truthy:
+    check-keys: false

modules/datadog-synthetics-monitor/README.md

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+# Opentofu Module Datadog Synthetics Monitor
+
+A Opentofu module to create a Datadog 🐶 Synthetics Monitor.
+
+## Usage
+
+There are three operating modes: `test_browser`, `test_api`, `test_api/ssl`. 
+
+- to choose `test_api` mode you should pass variables (`synthetics_type=api` and `synthetics_subtype=http`)
+- to choose `test_api/ssl` mode you should pass variables (`synthetics_type=api` and `synthetics_subtype=ssl`)
+- to choose `browser test`(it runs by default in minimal configuration) you should pass variable (`synthetics_type=browser`)
+
+
+### Minimal
+
+A minimal example to create a Datadog Synthetics Monitor.
+
+```terraform
+module "datadog_synthetics" {
+  source               = "github.com/mistweaverco/opentofu-modules/modules/datadog-synthetics-monitor"
+  dd_api_key           = "Datadog API Key"
+  dd_app_key           = "Datadog APP Key"
+  env                  = "production"
+  name                 = "mistweaverco.co Frontend Test"
+  service_name         = "mistweaverco.co"
+  synthetics_url       = "https://mistweaverco.co"
+  notification_targets = [
+    "@slack-alerts",
+    "@[email protected]"
+  ]
+}
+```
+
+### Full
+
+A full example to create a Datadog Synthetics Monitor.
+
+```terraform
+module "datadog_synthetics" {
+  source                            = "github.com/mistweaverco/opentofu-modules/modules/datadog-synthetics-monitor"
+  enabled                           = true
+  dd_api_key                        = "Datadog API Key"
+  dd_app_key                        = "Datadog APP Key"
+  env                               = "production"
+  name                              = "mistweaverco.co Frontend Test"
+  service_name                      = "mistweaverco.co"
+  synthetics_url                    = "https://mistweaverco.co"
+  synthetics_type                   = "browser"
+  synthetics_subtype                = "laptop_large"
+  synthetics_locations              = ["gcp:europe-west3"]
+  synthetics_device_ids             = ["laptop_large"]
+  browser_request_frequency         = 300
+  synthetics_alert_down_message     = "There are some problems on:"
+  synthetics_alert_up_message       = "The problems are gone on:"
+  api_request_frequency             = 60
+  api_assertion_type                = "statusCode"
+  api_assertion_operator            = "is"
+  api_assertion_target              = "200"
+  synthetics_ssl_port               = "443"
+  synthetics_ssl_request_frequency  = 900
+  synthetics_ssl_accept_self_signed = true
+  ssl_assertion_type                = "certificate"
+  ssl_assertion_operator            = "isInMoreThan"
+  ssl_assertion_target              = 30
+  synthetics_status                 = "live"
+  notification_targets              = [
+    "@slack-alerts",
+    "@[email protected]"
+  ]
+}
+```
+
+### Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| <a name="input_api_assertion_operator"></a> [api\_assertion\_operator](#input\_api\_assertion\_operator) | n/a | `string` | `"is"` | no |
+| <a name="input_api_assertion_target"></a> [api\_assertion\_target](#input\_api\_assertion\_target) | n/a | `string` | `"200"` | no |
+| <a name="input_api_assertion_type"></a> [api\_assertion\_type](#input\_api\_assertion\_type) | n/a | `string` | `"statusCode"` | no |
+| <a name="input_api_request_frequency"></a> [api\_request\_frequency](#input\_api\_request\_frequency) | n/a | `number` | `60` | no |
+| <a name="input_browser_request_frequency"></a> [browser\_request\_frequency](#input\_browser\_request\_frequency) | n/a | `number` | `300` | no |
+| <a name="input_dd_api_key"></a> [dd\_api\_key](#input\_dd\_api\_key) | Datadog API Key. You can find out how to get it here: https://docs.datadoghq.com/account_management/api-app-keys/ | `any` | n/a | yes |
+| <a name="input_dd_app_key"></a> [dd\_app\_key](#input\_dd\_app\_key) | Datadog APP Key. You can find out how to get it here: https://docs.datadoghq.com/account_management/api-app-keys/ | `any` | n/a | yes |
+| <a name="input_enabled"></a> [enabled](#input\_enabled) | n/a | `bool` | `true` | no |
+| <a name="input_env"></a> [env](#input\_env) | n/a | `any` | n/a | yes |
+| <a name="input_name"></a> [name](#input\_name) | n/a | `any` | n/a | yes |
+| <a name="input_notification_targets"></a> [notification\_targets](#input\_notification\_targets) | List of targets to inform. For example it could be @slack-alerts or @user:marco@mistweaverco.co. For more info visit https://docs.datadoghq.com/monitors/notifications/?tab=is_alert#notifications | `list` | n/a | yes |
+| <a name="input_service_name"></a> [service\_name](#input\_service\_name) | n/a | `any` | n/a | yes |
+| <a name="input_ssl_assertion_operator"></a> [ssl\_assertion\_operator](#input\_ssl\_assertion\_operator) | n/a | `string` | `"isInMoreThan"` | no |
+| <a name="input_ssl_assertion_target"></a> [ssl\_assertion\_target](#input\_ssl\_assertion\_target) | n/a | `number` | `30` | no |
+| <a name="input_ssl_assertion_type"></a> [ssl\_assertion\_type](#input\_ssl\_assertion\_type) | n/a | `string` | `"certificate"` | no |
+| <a name="input_synthetics_alert_down_message"></a> [synthetics\_alert\_down\_message](#input\_synthetics\_alert\_down\_message) | n/a | `string` | `"There are some problems on:"` | no |
+| <a name="input_synthetics_alert_up_message"></a> [synthetics\_alert\_up\_message](#input\_synthetics\_alert\_up\_message) | n/a | `string` | `"The problems are gone on:"` | no |
+| <a name="input_synthetics_device_ids"></a> [synthetics\_device\_ids](#input\_synthetics\_device\_ids) | n/a | `list` | <pre>[<br>  "laptop_large"<br>]</pre> | no |
+| <a name="input_synthetics_locations"></a> [synthetics\_locations](#input\_synthetics\_locations) | n/a | `list` | <pre>[<br>  "gcp:europe-west3"<br>]</pre> | no |
+| <a name="input_synthetics_ssl_accept_self_signed"></a> [synthetics\_ssl\_accept\_self\_signed](#input\_synthetics\_ssl\_accept\_self\_signed) | n/a | `bool` | `true` | no |
+| <a name="input_synthetics_ssl_port"></a> [synthetics\_ssl\_port](#input\_synthetics\_ssl\_port) | n/a | `string` | `"443"` | no |
+| <a name="input_synthetics_ssl_request_frequency"></a> [synthetics\_ssl\_request\_frequency](#input\_synthetics\_ssl\_request\_frequency) | n/a | `number` | `900` | no |
+| <a name="input_synthetics_status"></a> [synthetics\_status](#input\_synthetics\_status) | n/a | `string` | `"live"` | no |
+| <a name="input_synthetics_subtype"></a> [synthetics\_subtype](#input\_synthetics\_subtype) | n/a | `string` | `"http"` | no |
+| <a name="input_synthetics_type"></a> [synthetics\_type](#input\_synthetics\_type) | n/a | `string` | `"browser"` | no |
+| <a name="input_synthetics_url"></a> [synthetics\_url](#input\_synthetics\_url) | n/a | `any` | n/a | yes |
+

modules/datadog-synthetics-monitor/provider.tf

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+terraform {
+  required_providers {
+    datadog = {
+      source = "DataDog/datadog"
+    }
+  }
+}
+
+provider "datadog" {
+  api_key = var.dd_api_key
+  app_key = var.dd_app_key
+}

modules/datadog-synthetics-monitor/synthetics.tf

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+resource "datadog_synthetics_test" "browser" {
+  count = (var.enabled && var.synthetics_type == "browser") ? 1 : 0
+  name  = var.name
+  type  = "browser"
+  request_definition {
+    method = "GET"
+    url    = var.synthetics_url
+  }
+  device_ids = var.synthetics_device_ids
+  locations  = var.synthetics_locations
+  options_list {
+    tick_every = var.browser_request_frequency
+  }
+  message = <<EOM
+{{#is_no_data}}Monitor doesn't have data on ${var.synthetics_url}{{/is_no_data}}
+{{#is_alert}}${var.synthetics_alert_down_message} ${var.synthetics_url}{{/is_alert}}
+{{^is_alert}}${var.synthetics_alert_up_message} ${var.synthetics_url}{{/is_alert}}
+${join(" ", var.notification_targets)}
+EOM
+  tags = [
+    "env:${var.env}",
+    "service:${var.service_name}",
+    "terraform:true"
+  ]
+  status = var.synthetics_status
+}
+
+resource "datadog_synthetics_test" "api" {
+  count   = (var.enabled && var.synthetics_type == "api" && var.synthetics_subtype == "http") ? 1 : 0
+  name    = var.name
+  type    = var.synthetics_type
+  subtype = var.synthetics_subtype
+  request_definition {
+    method = "GET"
+    url    = var.synthetics_url
+  }
+  assertion {
+    type     = var.api_assertion_type
+    operator = var.api_assertion_operator
+    target   = var.api_assertion_target
+  }
+  locations = var.synthetics_locations
+  options_list {
+    tick_every = var.browser_request_frequency
+  }
+  message = <<EOM
+{{#is_no_data}}Monitor doesn't have data on ${var.synthetics_url}{{/is_no_data}}
+{{#is_alert}}${var.synthetics_alert_down_message} ${var.synthetics_url}{{/is_alert}}
+{{^is_alert}}${var.synthetics_alert_up_message} ${var.synthetics_url}{{/is_alert}}
+${join(" ", var.notification_targets)}
+EOM
+  tags = [
+    "env:${var.env}",
+    "service:${var.service_name}",
+    "terraform:true"
+  ]
+  status = var.synthetics_status
+}
+
+resource "datadog_synthetics_test" "ssl" {
+  count   = (var.enabled && var.synthetics_type == "api" && var.synthetics_subtype == "ssl") ? 1 : 0
+  name    = var.name
+  type    = var.synthetics_type
+  subtype = var.synthetics_subtype
+  request_definition {
+    host = var.synthetics_url
+    port = var.synthetics_ssl_port
+  }
+  assertion {
+    type     = var.ssl_assertion_type
+    operator = var.ssl_assertion_operator
+    target   = var.ssl_assertion_target
+  }
+  locations = var.synthetics_locations
+  options_list {
+    tick_every         = var.synthetics_ssl_request_frequency
+    accept_self_signed = var.synthetics_ssl_accept_self_signed
+  }
+  message = <<EOM
+{{#is_no_data}}Monitor doesn't have data on ${var.synthetics_url}{{/is_no_data}}
+{{#is_alert}}${var.synthetics_alert_down_message} ${var.synthetics_url}{{/is_alert}}
+{{^is_alert}}${var.synthetics_alert_up_message} ${var.synthetics_url}{{/is_alert}}
+${join(" ", var.notification_targets)}
+EOM
+  tags = [
+    "env:${var.env}",
+    "service:${var.service_name}",
+    "terraform:true"
+  ]
+  status = var.synthetics_status
+}