Terraform support (#32)

Initial terraform code.

Author: zippy1981

terraform/.gitignore

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+# Created by https://www.gitignore.io/api/terraform
+# Edit at https://www.gitignore.io/?templates=terraform
+
+### Terraform ###
+# Local .terraform directories
+**/.terraform/*
+
+# .tfstate files
+*.tfstate
+*.tfstate.*
+
+# Crash log files
+crash.log
+
+# Ignore any .tfvars files that are generated automatically for each Terraform run. Most
+# .tfvars files are managed as part of configuration and so should be included in
+# version control.
+#
+# example.tfvars
+
+# 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*
+
+# End of https://www.gitignore.io/api/terraform

terraform/README.md

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+# Terraform support (experimental)
+
+## Overview
+
+This folder contains a terraform file to create an Azure Resource Group with all the necessary infrastructure to deploy the AlwaysEncryptedSample app to (in theory).
+
+All thise commands assume you are in the `/terraform/` folder in the git repo. The best way to ensure you are there (assuming your terminals working directory is anywhere in the git repo) is `Join-Path -Path "$(git rev-parse --show-toplevel)" -childpath 'terraform' | Set-Location`
+
+## Howto
+
+### Creating the resource group
+
+```powershell
+az login
+az account set --subscription='SUBSCRIPTION_ID_I_WANT_TO_USE'
+$env:TF_VAR_certificate_creator  = $(az ad signed-in-user show --query objectId --otsv)
+terraform init
+terraform plan
+terraform apply
+```
+
+### Cleaning up
+
+If you don't want to rack of charges then the command is `az group delete --name AlwaysEncryptedSample`. You are also going to want to delete your terraform state (i.e. the `terraform.tfstate` file, hereafter referred to as tfstate) after deleting the reource grouns as your next `terraform apply` will fail otherwise. The tfstate associates the terraform objects in your `.tf` files with the guid identifiers of the azure resources. I haven't looked to hard into the details, but the script as is can't create everything from scratch if there is an existing tfstate. Therefore you probably want to do the following:
+
+```powershell
+az group delete --name AlwaysEncryptedSample
+Remove-Item -Path .\terraform.tfstate
+Remove-Item -Path .\terraform.tfstate.backup
+```
+
+## Further directions
+
+* I'd like t0 store the state in Azure cloud storage and just be smarter about things.

terraform/main.tf

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+data "azurerm_client_config" "current" {
+
+}
+
+output "tenant_id" {
+  value = "${data.azurerm_client_config.current.tenant_id}"
+}
+
+variable "resource_location" {
+  type    = "string"
+  default = "East US"
+}
+
+variable "certificate_creator" {
+  type    = "string"
+  default = ""
+}
+
+variable "resource_names" {
+  type = "map"
+  default = {
+    "ApplicationInsights" = "AlwaysEncryptedSample"
+    "AppServicePlan"      = "always-encrypted-sample-appserviceplan"
+    "ResourceGroup"       = "AlwaysEncryptedSample"
+    "SqlServer"           = "alwaysencryptedsample"
+    "SqlDatabase"         = "AlwaysEncryptedSample"
+    "AppService"          = "AlwaysEncryptedSampleWeb3"
+    "KeyVault"            = "AlwaysEncryptedSampleKeyVault"
+    "ColumnCertificate"   = "ColumnCertificate"
+  }
+
+}
+variable "certificate_cn" {
+  type    = "string"
+  default = "CN=Always Encrypted Sample Cert"
+}
+
+variable "sql_settings" {
+  type = "map"
+  default = {
+    "admin_login"    = "essay"
+    "admin_password" = "lbDG62XZy6i3pL8aC%Lw%uY7RYLN8o3aG2XhaH8dM2wbu0NPCMo0R"
+  }
+}
+
+resource "azurerm_resource_group" "always_encrypted_sample" {
+  name     = "${var.resource_names["ResourceGroup"]}"
+  location = "${var.resource_location}"
+}
+
+resource "azurerm_app_service_plan" "always_encrypted_sample" {
+  name                = "${var.resource_names["AppServicePlan"]}"
+  location            = "${azurerm_resource_group.always_encrypted_sample.location}"
+  resource_group_name = "${azurerm_resource_group.always_encrypted_sample.name}"
+  kind                = "app"
+  sku {
+    tier = "Free"
+    size = "F1"
+  }
+}
+
+resource "azurerm_application_insights" "app_insights" {
+  name                = "${var.resource_names["ApplicationInsights"]}"
+  resource_group_name = "${azurerm_resource_group.always_encrypted_sample.name}"
+  location            = "${azurerm_resource_group.always_encrypted_sample.location}"
+  application_type    = "Web"
+}
+
+output "instrumentation_key" {
+  value = "${azurerm_application_insights.app_insights.instrumentation_key}"
+}
+
+
+resource "azurerm_sql_server" "sql_server" {
+  name                         = "${var.resource_names["SqlServer"]}"
+  resource_group_name          = "${azurerm_resource_group.always_encrypted_sample.name}"
+  location                     = "${azurerm_resource_group.always_encrypted_sample.location}"
+  version                      = "12.0"
+  administrator_login          = "${var.sql_settings["admin_login"]}"
+  administrator_login_password = "${var.sql_settings["admin_password"]}"
+  lifecycle {
+    ignore_changes = ["administrator_login_password"]
+  }
+}
+
+resource "azurerm_sql_database" "sql_database" {
+  name                             = "${var.resource_names["SqlDatabase"]}"
+  resource_group_name              = "${azurerm_resource_group.always_encrypted_sample.*.name[0]}"
+  location                         = "${azurerm_resource_group.always_encrypted_sample.*.location[0]}"
+  server_name                      = "${azurerm_sql_server.sql_server.*.name[0]}"
+  edition                          = "Standard"
+  create_mode                      = "Default"
+  requested_service_objective_name = "S0"
+}
+
+
+resource "azurerm_app_service" "web_3" {
+  name                = "${var.resource_names["AppService"]}"
+  resource_group_name = "${azurerm_resource_group.always_encrypted_sample.*.name[0]}"
+  app_service_plan_id = "${azurerm_app_service_plan.always_encrypted_sample.id}"
+  location            = "${azurerm_resource_group.always_encrypted_sample.*.location[0]}"
+  https_only          = "true"
+  app_settings = {
+    APPINSIGHTS_INSTRUMENTATIONKEY = "${azurerm_application_insights.app_insights.instrumentation_key}"
+  }
+  site_config {
+    default_documents = [
+      "Default.htm",
+      "Default.html",
+      "Default.asp",
+      "index.htm",
+      "index.html",
+      "iisstart.htm",
+      "default.aspx",
+      "index.php",
+      "hostingstart.html",
+    ]
+    http2_enabled             = false //TODO: figure out if enabling this helps anything
+    ftps_state                = "Disabled"
+    use_32_bit_worker_process = true
+  }
+}
+
+/*
+output "web_3_service_principle_id" {
+  value = "${azurerm_app_service.web_3.identity.0.principal_id}"
+}
+*/
+
+
+resource "azurerm_key_vault" "always_encrypted_sample" {
+  name                = "${azurerm_resource_group.always_encrypted_sample.*.name[0]}"
+  resource_group_name = "${var.resource_names["ResourceGroup"]}"
+  location            = "${azurerm_resource_group.always_encrypted_sample.*.location[0]}"
+  tenant_id           = "${data.azurerm_client_config.current.tenant_id}"
+  sku {
+    name = "standard"
+  }
+
+  access_policy {
+    tenant_id = "${data.azurerm_client_config.current.tenant_id}"
+    object_id = "${var.certificate_creator}"
+
+    certificate_permissions = [
+      "create", "get" # Terraform needs get to make the cert, probably to check its existance
+    ]
+  }
+}
+
+output "key_vault_uri" {
+  value = "${azurerm_key_vault.always_encrypted_sample.vault_uri}"
+}
+
+resource "azurerm_key_vault_certificate" "column_certificate" {
+  name         = "${var.resource_names["ColumnCertificate"]}"
+  key_vault_id = "${azurerm_key_vault.always_encrypted_sample.id}"
+
+  certificate_policy {
+    issuer_parameters {
+      name = "Self"
+    }
+
+    key_properties {
+      exportable = false
+      key_size   = 4096
+      key_type   = "RSA"
+      reuse_key  = true #TODO: Can I make this false?
+    }
+
+    #TODO We might want to auto renew if we are crazy.
+    /*
+    lifetime_action {
+      action {
+        action_type = "AutoRenew"
+      }
+
+      trigger {
+        days_before_expiry = 30
+      }
+    }
+  */
+    secret_properties {
+      content_type = "application/x-pkcs12"
+    }
+
+    x509_certificate_properties {
+      extended_key_usage = [
+        "1.3.6.1.5.5.8.2.2",
+        "1.3.6.1.4.1.311.10.3.1"
+      ]
+
+      key_usage = [
+        "dataEncipherment",
+      ]
+
+      subject_alternative_names {
+        dns_names = ["${azurerm_sql_server.sql_server.fully_qualified_domain_name}"]
+      }
+
+      subject            = "${var.certificate_cn}"
+      validity_in_months = 12
+    }
+  }
+}