From 3023d2ac6cbe03bde2038104d694313d12342920 Mon Sep 17 00:00:00 2001
From: Krishnadhas N K <108367225+githubofkrishnadhas@users.noreply.github.com>
Date: Sat, 21 Sep 2024 15:48:01 +0530
Subject: [PATCH] DEVOPS-280 loganalytics terraform module initial commit (#10)

* DEVOPS-280 loganalytics terraform module initial commit

* DEVOPS-280 loganalytics terraform module initial commit
---
 log-analytics-workspace/loganalytics.tf | 18 ++++++++
 log-analytics-workspace/output.tf       | 19 +++++++++
 log-analytics-workspace/providers.tf    | 12 ++++++
 log-analytics-workspace/variables.tf    | 55 +++++++++++++++++++++++++
 4 files changed, 104 insertions(+)
 create mode 100644 log-analytics-workspace/loganalytics.tf
 create mode 100644 log-analytics-workspace/output.tf
 create mode 100644 log-analytics-workspace/providers.tf
 create mode 100644 log-analytics-workspace/variables.tf

diff --git a/log-analytics-workspace/loganalytics.tf b/log-analytics-workspace/loganalytics.tf
new file mode 100644
index 0000000..844aeaa
--- /dev/null
+++ b/log-analytics-workspace/loganalytics.tf
@@ -0,0 +1,18 @@
+resource "azurerm_resource_group" "rg" {
+  name     = upper(var.resource_group_name)
+  location = var.location
+  tags = {
+    Environment     = upper(var.environment)
+    Orchestrator    = "Terraform"
+    DisplayName     = upper(var.resource_group_name)
+    ApplicationName = lower(var.application_name)
+  }
+}
+
+resource "azurerm_log_analytics_workspace" "loganalytics_ws" {
+  name = upper(var.loganalytics_workspace_name)
+  sku = var.loganalytics_sku
+  resource_group_name = azurerm_resource_group.rg.name
+  location = var.location
+  retention_in_days = var.loganalytics_retention_period
+}
diff --git a/log-analytics-workspace/output.tf b/log-analytics-workspace/output.tf
new file mode 100644
index 0000000..56738eb
--- /dev/null
+++ b/log-analytics-workspace/output.tf
@@ -0,0 +1,19 @@
+output "loganalytics_workspace_name" {
+  value = azurerm_log_analytics_workspace.loganalytics_ws.name
+  description = "Azure Log analytics workspace name"
+}
+
+output "loganalytics_workspace_resource_group" {
+  value = azurerm_log_analytics_workspace.loganalytics_ws.resource_group_name
+    description = "Azure Log analytics workspace resource group name"
+}
+
+output "loganalytics_retention_period" {
+  value = azurerm_log_analytics_workspace.loganalytics_ws.retention_in_days
+  description = "Azure loganalytics data retention in days"
+}
+
+output "loganalytics_sku" {
+  value = azurerm_log_analytics_workspace.loganalytics_ws.sku
+  description = "Azure loganalytics SKU"
+}
diff --git a/log-analytics-workspace/providers.tf b/log-analytics-workspace/providers.tf
new file mode 100644
index 0000000..45f79e0
--- /dev/null
+++ b/log-analytics-workspace/providers.tf
@@ -0,0 +1,12 @@
+terraform {
+  required_version = "~> 1.3"
+  required_providers {
+    azurerm = {
+      source  = "hashicorp/azurerm"
+      version = "<= 4.0"
+    }
+  }
+}
+provider "azurerm" {
+  features {}
+}
\ No newline at end of file
diff --git a/log-analytics-workspace/variables.tf b/log-analytics-workspace/variables.tf
new file mode 100644
index 0000000..d01e1d0
--- /dev/null
+++ b/log-analytics-workspace/variables.tf
@@ -0,0 +1,55 @@
+variable "resource_group_name" {
+  default = ""
+  description = "Azure resource group name to create log analytics workspace"
+  type = string
+}
+
+variable "location" {
+  default = ""
+  description = "Azure location"
+  type = string
+}
+
+variable "loganalytics_workspace_name" {
+  default = ""
+  type = string
+  description = "Loganalytics workspace name"
+}
+
+variable "loganalytics_retention_period" {
+  default = 7
+  description = "Loganalytics logs retention period"
+  type = number
+  validation {
+    condition = var.loganalytics_retention_period == 7 || (var.loganalytics_retention_period >= 30 && var.loganalytics_retention_period <= 730)
+    error_message = "The workspace data retention in days. Possible values are either 7 (Free Tier only) or range between 30 and 730."
+  }
+
+}
+
+variable "application_name" {
+  default     = ""
+  description = "Azure application name tag"
+  type        = string
+}
+
+variable "environment" {
+  default     = ""
+  description = "Environment tag value in Azure"
+  type        = string
+  validation {
+    condition     = contains(["DEV", "QA", "UAT", "PROD"], var.environment)
+    error_message = "Environment value should be one among DEV or QA or UAT or PROD."
+  }
+}
+
+variable "loganalytics_sku" {
+  default = "PerGB2018"
+  type = string
+  description = "Specifies the SKU of the Log Analytics Workspace"
+  validation {
+    condition     = contains(["PerNode", "Premium", "Standard", "Standalone", "Unlimited", "CapacityReservation", "PerGB2018"], var.loganalytics_sku)
+    error_message = "Log analytics SKU should be one among PerNode, Premium, Standard, Standalone, Unlimited, CapacityReservation or PerGB2018 ."
+  }
+}
+