feat: add Log Analytics Workspace, Network Watcher, and Policy Set Definition constructs

Author: archit017

API.md

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+# Azure Log Analytics Workspace Construct
+
+This module provides a high-level TypeScript construct for managing Azure Log Analytics Workspaces using the Terraform CDK and Azure AZAPI provider.
+
+## Features
+
+- **Multiple API Version Support**: Supports 2023-09-01 (latest) and 2022-10-01 (for backward compatibility)
+- **Automatic Version Resolution**: Uses the latest API version by default
+- **Version Pinning**: Lock to a specific API version for stability
+- **Type-Safe**: Full TypeScript support with comprehensive interfaces
+- **JSII Compatible**: Can be used from TypeScript, Python, Java, and C#
+- **Terraform Outputs**: Automatic creation of outputs for id, name, workspaceId, and customerId
+- **Tag Management**: Built-in methods for managing resource tags
+
+## Supported API Versions
+
+| Version | Status | Release Date | Notes |
+|---------|--------|--------------|-------|
+| 2023-09-01 | Active (Latest) | 2023-09-01 | Recommended for new deployments, includes Data Collection Rule support |
+| 2022-10-01 | Active | 2022-10-01 | Stable release for backward compatibility |
+
+## Installation
+
+This module is part of the `@microsoft/terraform-cdk-constructs` package.
+
+```bash
+npm install @microsoft/terraform-cdk-constructs
+```
+
+## Basic Usage
+
+### Simple Log Analytics Workspace
+
+```typescript
+import { App, TerraformStack } from "cdktn";
+import { AzapiProvider } from "@microsoft/terraform-cdk-constructs/core-azure";
+import { ResourceGroup } from "@microsoft/terraform-cdk-constructs/azure-resourcegroup";
+import { LogAnalyticsWorkspace } from "@microsoft/terraform-cdk-constructs/azure-loganalyticsworkspace";
+
+const app = new App();
+const stack = new TerraformStack(app, "log-analytics-stack");
+
+// Configure the Azure provider
+new AzapiProvider(stack, "azapi", {});
+
+// Create a resource group
+const resourceGroup = new ResourceGroup(stack, "rg", {
+  name: "my-resource-group",
+  location: "eastus",
+});
+
+// Create a Log Analytics Workspace
+const workspace = new LogAnalyticsWorkspace(stack, "workspace", {
+  name: "my-log-analytics",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  tags: {
+    environment: "production",
+    project: "monitoring",
+  },
+});
+
+app.synth();
+```
+
+## Advanced Usage
+
+### Custom Retention Period
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace-retention", {
+  name: "workspace-with-retention",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  retentionInDays: 90, // Keep data for 90 days (range: 30-730)
+});
+```
+
+### PerGB2018 Pricing (Pay-as-you-go)
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace-pergb", {
+  name: "workspace-pergb",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  sku: {
+    name: "PerGB2018",
+  },
+  retentionInDays: 60,
+});
+```
+
+### Capacity Reservation Pricing
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace-capacity", {
+  name: "workspace-capacity-reservation",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  sku: {
+    name: "CapacityReservation",
+    capacityReservationLevel: 500, // Valid values: 100, 200, 300, 400, 500, 1000, 2000, 5000
+  },
+  retentionInDays: 365,
+});
+```
+
+### Daily Volume Cap (Workspace Capping)
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace-capped", {
+  name: "workspace-with-cap",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  workspaceCapping: {
+    dailyQuotaGb: 100, // Stop ingestion after 100GB per day
+  },
+});
+```
+
+### Private Network Access
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace-private", {
+  name: "workspace-private",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  publicNetworkAccessForIngestion: "Disabled",
+  publicNetworkAccessForQuery: "Disabled",
+});
+```
+
+### Workspace Features
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace-features", {
+  name: "workspace-with-features",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  features: {
+    enableDataExport: true,
+    immediatePurgeDataOn30Days: false,
+    disableLocalAuth: true,
+    enableLogAccessUsingOnlyResourcePermissions: true,
+  },
+});
+```
+
+### Managed Identity
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace-identity", {
+  name: "workspace-with-identity",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  identity: {
+    type: "SystemAssigned",
+  },
+});
+```
+
+### Pinning to a Specific API Version
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace-pinned", {
+  name: "workspace-stable",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  apiVersion: "2022-10-01", // Pin to specific version
+});
+```
+
+### Using Outputs
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace", {
+  name: "my-workspace",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+});
+
+// Access workspace ID for use in other resources (e.g., Diagnostic Settings)
+console.log(workspace.id); // Terraform interpolation string
+
+// Use outputs for cross-stack references
+new TerraformOutput(stack, "workspace-id", {
+  value: workspace.idOutput,
+});
+
+new TerraformOutput(stack, "workspace-customer-id", {
+  value: workspace.customerIdOutput,
+});
+```
+
+## API Reference
+
+### LogAnalyticsWorkspaceProps
+
+Configuration properties for the Log Analytics Workspace construct.
+
+| Property | Type | Required | Description |
+|----------|------|----------|-------------|
+| `name` | `string` | No* | Name of the workspace. If not provided, uses the construct ID. Must be 4-63 characters, alphanumeric and hyphens. |
+| `location` | `string` | Yes | Azure region where the workspace will be created. |
+| `resourceGroupId` | `string` | Yes | Resource group ID where the workspace will be created. |
+| `retentionInDays` | `number` | No | Data retention in days (30-730). Default: 30. |
+| `sku` | `LogAnalyticsWorkspaceSku` | No | SKU configuration. Default: { name: "PerGB2018" }. |
+| `workspaceCapping` | `LogAnalyticsWorkspaceCapping` | No | Daily volume cap configuration. |
+| `publicNetworkAccessForIngestion` | `"Enabled" \| "Disabled"` | No | Network access for data ingestion. Default: "Enabled". |
+| `publicNetworkAccessForQuery` | `"Enabled" \| "Disabled"` | No | Network access for queries. Default: "Enabled". |
+| `features` | `LogAnalyticsWorkspaceFeatures` | No | Workspace feature flags. |
+| `forceCmkForQuery` | `boolean` | No | Require customer-managed keys for saved searches/alerts. |
+| `defaultDataCollectionRuleResourceId` | `string` | No | Default DCR resource ID (API 2023-09-01+). |
+| `identity` | `LogAnalyticsWorkspaceIdentity` | No | Managed identity configuration. |
+| `tags` | `{ [key: string]: string }` | No | Resource tags. |
+| `apiVersion` | `string` | No | Pin to a specific API version. |
+
+### LogAnalyticsWorkspaceSku
+
+| Property | Type | Required | Description |
+|----------|------|----------|-------------|
+| `name` | `string` | Yes | SKU name: "Free", "Standard", "Premium", "PerNode", "PerGB2018", "Standalone", "CapacityReservation" |
+| `capacityReservationLevel` | `number` | No | Capacity in GB/day for CapacityReservation SKU. Valid: 100, 200, 300, 400, 500, 1000, 2000, 5000. |
+
+### LogAnalyticsWorkspaceCapping
+
+| Property | Type | Required | Description |
+|----------|------|----------|-------------|
+| `dailyQuotaGb` | `number` | Yes | Daily volume cap in GB. Use -1 for no cap. |
+
+### LogAnalyticsWorkspaceFeatures
+
+| Property | Type | Required | Description |
+|----------|------|----------|-------------|
+| `enableDataExport` | `boolean` | No | Enable data export capability. |
+| `immediatePurgeDataOn30Days` | `boolean` | No | Purge data immediately after 30 days. |
+| `disableLocalAuth` | `boolean` | No | Disable local authentication. |
+| `enableLogAccessUsingOnlyResourcePermissions` | `boolean` | No | Enable resource-based access only. |
+
+### LogAnalyticsWorkspaceIdentity
+
+| Property | Type | Required | Description |
+|----------|------|----------|-------------|
+| `type` | `string` | Yes | Identity type: "SystemAssigned", "UserAssigned", "SystemAssigned,UserAssigned", "None" |
+| `userAssignedIdentities` | `object` | No | User-assigned identity resource IDs. |
+
+### Public Properties
+
+| Property | Type | Description |
+|----------|------|-------------|
+| `id` | `string` | The Azure resource ID of the workspace. |
+| `props` | `LogAnalyticsWorkspaceProps` | The original input properties. |
+| `resolvedApiVersion` | `string` | The API version being used. |
+
+### Outputs
+
+The construct automatically creates Terraform outputs:
+
+- `id`: The workspace resource ID
+- `name`: The workspace name
+- `workspace_id`: The workspace unique identifier (GUID)
+- `customer_id`: The workspace customer ID (same as workspace_id)
+
+### Methods
+
+| Method | Parameters | Description |
+|--------|-----------|-------------|
+| `addTag` | `key: string, value: string` | Add a tag to the workspace. |
+| `addAccess` | `objectId: string, roleDefinitionName: string` | Add RBAC role assignment. |
+
+## Best Practices
+
+### 1. Use PerGB2018 for Most Workloads
+
+Unless you have specific requirements, the pay-as-you-go model is most cost-effective:
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace", {
+  name: "my-workspace",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  sku: { name: "PerGB2018" },
+});
+```
+
+### 2. Set Appropriate Retention
+
+Balance between compliance requirements and cost:
+
+```typescript
+// Production: longer retention for compliance
+const prodWorkspace = new LogAnalyticsWorkspace(stack, "prod-workspace", {
+  name: "prod-logs",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  retentionInDays: 365,
+});
+
+// Development: shorter retention to save costs
+const devWorkspace = new LogAnalyticsWorkspace(stack, "dev-workspace", {
+  name: "dev-logs", 
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  retentionInDays: 30,
+});
+```
+
+### 3. Use Daily Cap for Cost Control
+
+Prevent unexpected charges from log spikes:
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace", {
+  name: "cost-controlled",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  workspaceCapping: {
+    dailyQuotaGb: 50, // Stop at 50GB/day
+  },
+});
+```
+
+### 4. Apply Consistent Tags
+
+```typescript
+const workspace = new LogAnalyticsWorkspace(stack, "workspace", {
+  name: "my-workspace",
+  location: "eastus",
+  resourceGroupId: resourceGroup.id,
+  tags: {
+    environment: "production",
+    "cost-center": "platform-team",
+    "managed-by": "terraform",
+  },
+});
+```
+
+## Troubleshooting
+
+### Common Issues
+
+1. **Retention Out of Range**: Ensure `retentionInDays` is between 30 and 730.
+
+2. **Invalid Capacity Reservation Level**: Valid values are 100, 200, 300, 400, 500, 1000, 2000, 5000.
+
+3. **Name Validation**: Workspace names must be 4-63 characters, start and end with alphanumeric, and contain only letters, numbers, and hyphens.
+
+4. **API Version Errors**: Ensure the version is 2023-09-01 or 2022-10-01.
+
+## Related Constructs
+
+- [`ResourceGroup`](../azure-resourcegroup/README.md) - Azure Resource Groups
+- [`DiagnosticSettings`](../azure-diagnosticsettings/README.md) - Send logs to this workspace
+- [`MetricAlert`](../azure-metricalert/README.md) - Create alerts based on workspace metrics
+
+## Additional Resources
+
+- [Azure Log Analytics Documentation](https://learn.microsoft.com/en-us/azure/azure-monitor/logs/log-analytics-overview)
+- [Log Analytics Pricing](https://azure.microsoft.com/en-us/pricing/details/monitor/)
+- [Azure REST API Reference](https://learn.microsoft.com/en-us/rest/api/loganalytics/)
+- [Terraform CDK Documentation](https://developer.hashicorp.com/terraform/cdktf)
+
+## Contributing
+
+Contributions are welcome! Please see the [Contributing Guide](../../CONTRIBUTING.md) for details.
+
+## License
+
+This project is licensed under the MIT License - see the [LICENSE](../../LICENSE) file for details.

src/azure-loganalyticsworkspace/README.md

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+/**
+ * Azure Log Analytics Workspace module
+ *
+ * This module provides constructs for creating and managing Azure Log Analytics Workspaces.
+ */
+
+export * from "./lib";

src/azure-loganalyticsworkspace/index.ts

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+/**
+ * Azure Log Analytics Workspace construct exports
+ */
+
+export * from "./log-analytics-workspace-schemas";
+export * from "./log-analytics-workspace";