fix: rewrite GCP disk snapshot module with pure Terraform
- Remove external/gcloud CLI dependency - Use rotating snapshot slots (1-3) for predictable naming - Add fake credentials for CI testing - Simplify design: slots are reused round-robin - Update README with new approach - Fix prettier formatting
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@ -1,6 +1,6 @@
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---
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---
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display_name: GCP Disk Snapshot
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display_name: GCP Disk Snapshot
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description: Create and manage disk snapshots for Coder workspaces on GCP with automatic cleanup
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description: Create and manage disk snapshots for Coder workspaces on GCP with automatic rotation
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icon: ../../../../.icons/gcp.svg
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icon: ../../../../.icons/gcp.svg
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verified: false
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verified: false
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tags: [gcp, snapshot, disk, backup, persistence]
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tags: [gcp, snapshot, disk, backup, persistence]
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@ -25,11 +25,22 @@ module "disk_snapshot" {
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## Features
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## Features
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- **Automatic Snapshots**: Creates disk snapshots when workspaces are stopped
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- **Automatic Snapshots**: Creates disk snapshots when workspaces are stopped
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- **Automatic Cleanup**: Maintains only the N most recent snapshots (configurable)
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- **Rotating Slots**: Maintains up to N snapshot slots (configurable, default: 3)
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- **Snapshot Selection**: Users can choose from available snapshots when starting workspaces
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- **Snapshot Selection**: Users can choose from available snapshots when starting workspaces
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- **Default to Newest**: Automatically selects the most recent snapshot by default
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- **Default to Newest**: Automatically selects the most recent snapshot by default
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- **Pure Terraform**: No external CLI dependencies (gcloud not required)
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- **Workspace Isolation**: Snapshots are labeled and filtered by workspace and owner
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- **Workspace Isolation**: Snapshots are labeled and filtered by workspace and owner
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## How It Works
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The module uses a **rotating slot** approach:
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1. Snapshots are named with predictable slot names: `{owner}-{workspace}-slot-1`, `slot-2`, `slot-3`
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2. When a workspace stops, a new snapshot is created in the next available slot
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3. Once all slots are full, the oldest slot is reused (round-robin)
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4. Users can select from any available snapshot when starting the workspace
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5. By default, the most recent snapshot is selected
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## Usage
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## Usage
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### Basic Usage
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### Basic Usage
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@ -46,11 +57,11 @@ module "disk_snapshot" {
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# Create disk from snapshot or default image
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# Create disk from snapshot or default image
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resource "google_compute_disk" "workspace" {
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resource "google_compute_disk" "workspace" {
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name = "workspace-${data.coder_workspace.me.id}"
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name = "workspace-${data.coder_workspace.me.id}"
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type = "pd-balanced"
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type = "pd-balanced"
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zone = var.zone
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zone = var.zone
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size = 50
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size = 50
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# Use snapshot if available, otherwise use default image
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# Use snapshot if available, otherwise use default image
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snapshot = module.disk_snapshot.snapshot_self_link
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snapshot = module.disk_snapshot.snapshot_self_link
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image = module.disk_snapshot.use_snapshot ? null : module.disk_snapshot.default_image
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image = module.disk_snapshot.use_snapshot ? null : module.disk_snapshot.default_image
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@ -71,7 +82,7 @@ module "disk_snapshot" {
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default_image = "debian-cloud/debian-12"
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default_image = "debian-cloud/debian-12"
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zone = var.zone
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zone = var.zone
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project = var.project_id
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project = var.project_id
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snapshot_retention_count = 5 # Keep last 5 snapshots
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snapshot_retention_count = 2 # Keep only 2 snapshot slots
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labels = {
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labels = {
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environment = "development"
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environment = "development"
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@ -90,33 +101,34 @@ module "disk_snapshot" {
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default_image = "debian-cloud/debian-12"
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default_image = "debian-cloud/debian-12"
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zone = var.zone
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zone = var.zone
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project = var.project_id
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project = var.project_id
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storage_locations = ["us-central1"] # Store snapshots in specific region
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storage_locations = ["us-central1"] # Store snapshots in specific region
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}
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}
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```
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```
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## Variables
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## Variables
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| Name | Description | Type | Default | Required |
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| Name | Description | Type | Default | Required |
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|------|-------------|------|---------|:--------:|
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| ------------------------ | ----------------------------------------------------------- | ------------ | ------- | :------: |
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| disk_self_link | The self_link of the disk to create snapshots from | string | - | yes |
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| disk_self_link | The self_link of the disk to create snapshots from | string | - | yes |
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| default_image | The default image to use when not restoring from a snapshot | string | - | yes |
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| default_image | The default image to use when not restoring from a snapshot | string | - | yes |
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| zone | The zone where the disk resides | string | - | yes |
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| zone | The zone where the disk resides | string | - | yes |
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| project | The GCP project ID | string | - | yes |
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| project | The GCP project ID | string | - | yes |
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| snapshot_retention_count | Number of snapshots to retain | number | 3 | no |
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| snapshot_retention_count | Number of snapshot slots to maintain (1-3) | number | 3 | no |
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| storage_locations | Cloud Storage bucket location(s) for snapshots | list(string) | [] | no |
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| storage_locations | Cloud Storage bucket location(s) for snapshots | list(string) | [] | no |
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| labels | Additional labels to apply to snapshots | map(string) | {} | no |
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| labels | Additional labels to apply to snapshots | map(string) | {} | no |
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| test_mode | Skip GCP API calls for testing | bool | false | no |
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| test_mode | Skip GCP API calls for testing | bool | false | no |
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## Outputs
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## Outputs
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| Name | Description |
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| Name | Description |
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|------|-------------|
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| ---------------------- | ------------------------------------------------------- |
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| snapshot_self_link | Self link of the selected snapshot (null if using fresh disk) |
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| snapshot_self_link | Self link of the selected snapshot (null if fresh disk) |
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| use_snapshot | Whether a snapshot is being used |
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| use_snapshot | Whether a snapshot is being used |
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| default_image | The default image configured |
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| default_image | The default image configured |
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| selected_snapshot_name | Name of the selected snapshot |
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| selected_snapshot_name | Name of the selected snapshot |
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| available_snapshots | List of available snapshot names |
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| available_snapshots | List of available snapshot names |
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| created_snapshot_name | Name of snapshot created on stop |
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| created_snapshot_name | Name of snapshot created on stop |
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| snapshot_slots | The snapshot slot names used for rotation |
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## Required IAM Permissions
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## Required IAM Permissions
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@ -137,17 +149,10 @@ The service account running Terraform needs the following permissions:
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Or use the predefined role: `roles/compute.storageAdmin`
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Or use the predefined role: `roles/compute.storageAdmin`
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## How It Works
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1. **Snapshot Creation**: When a workspace transitions to "stop", a disk snapshot is automatically created
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2. **Labeling**: Snapshots are labeled with workspace name, owner, and template for filtering
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3. **Cleanup**: Old snapshots beyond the retention count are automatically deleted
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4. **Restore Selection**: Available snapshots are presented as options, defaulting to the newest
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5. **Disk Creation**: The module outputs are used to create a disk from snapshot or default image
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## Considerations
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## Considerations
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- **Cost**: Snapshots incur storage costs. The retention policy helps manage costs
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- **Cost**: Snapshots incur storage costs. The rotating slot approach limits the number of snapshots.
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- **Slot Naming**: Snapshots use predictable names (`-slot-1`, `-slot-2`, etc.) for rotation
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- **Time**: Snapshot creation takes time; workspace stop operations may take longer
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- **Time**: Snapshot creation takes time; workspace stop operations may take longer
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- **Permissions**: Ensure proper IAM permissions for snapshot management
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- **Permissions**: Ensure proper IAM permissions for snapshot management
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- **Region**: Snapshots can be stored regionally for cost optimization
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- **Region**: Snapshots can be stored regionally for cost optimization
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@ -155,14 +160,15 @@ Or use the predefined role: `roles/compute.storageAdmin`
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## Comparison with Machine Images
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## Comparison with Machine Images
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This module uses *disk snapshots* rather than *machine images*:
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This module uses _disk snapshots_ rather than _machine images_:
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| Feature | Disk Snapshots | Machine Images |
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| Feature | Disk Snapshots | Machine Images |
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|---------|---------------|----------------|
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| ----------- | ------------------------ | ---------------------------- |
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| API Status | GA (stable) | Beta |
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| API Status | GA (stable) | Beta |
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| Captures | Disk data only | Full instance config + disks |
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| Captures | Disk data only | Full instance config + disks |
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| Cleanup | Automatic via retention policy | Manual or custom automation |
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| Cleanup | Rotating slots (simple) | Manual or custom automation |
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| Cost | Lower | Higher |
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| Cost | Lower | Higher |
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| Restore | Requires instance config | Full instance restore |
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| Restore | Requires instance config | Full instance restore |
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| List/Filter | Limited in Terraform | Limited in Terraform |
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For most Coder workspace use cases, disk snapshots are recommended as they capture the persistent data while the instance configuration is managed by Terraform.
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For most Coder workspace use cases, disk snapshots are recommended as they capture the persistent data while the instance configuration is managed by Terraform.
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@ -1,15 +1,13 @@
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import { describe, expect, it } from "bun:test";
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import { describe, expect, it } from "bun:test";
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import {
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import { runTerraformApply, runTerraformInit } from "~test";
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runTerraformApply,
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runTerraformInit,
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} from "~test";
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describe("gcp-disk-snapshot", async () => {
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describe("gcp-disk-snapshot", async () => {
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await runTerraformInit(import.meta.dir);
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await runTerraformInit(import.meta.dir);
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it("required variables with test mode", async () => {
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it("required variables with test mode", async () => {
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await runTerraformApply(import.meta.dir, {
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await runTerraformApply(import.meta.dir, {
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disk_self_link: "projects/test-project/zones/us-central1-a/disks/test-disk",
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disk_self_link:
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"projects/test-project/zones/us-central1-a/disks/test-disk",
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default_image: "debian-cloud/debian-12",
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default_image: "debian-cloud/debian-12",
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zone: "us-central1-a",
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zone: "us-central1-a",
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project: "test-project",
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project: "test-project",
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@ -31,7 +29,8 @@ describe("gcp-disk-snapshot", async () => {
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it("missing variable: default_image", async () => {
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it("missing variable: default_image", async () => {
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await expect(
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await expect(
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runTerraformApply(import.meta.dir, {
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runTerraformApply(import.meta.dir, {
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disk_self_link: "projects/test-project/zones/us-central1-a/disks/test-disk",
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disk_self_link:
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"projects/test-project/zones/us-central1-a/disks/test-disk",
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zone: "us-central1-a",
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zone: "us-central1-a",
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project: "test-project",
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project: "test-project",
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test_mode: true,
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test_mode: true,
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@ -42,7 +41,8 @@ describe("gcp-disk-snapshot", async () => {
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it("missing variable: zone", async () => {
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it("missing variable: zone", async () => {
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await expect(
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await expect(
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runTerraformApply(import.meta.dir, {
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runTerraformApply(import.meta.dir, {
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disk_self_link: "projects/test-project/zones/us-central1-a/disks/test-disk",
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disk_self_link:
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"projects/test-project/zones/us-central1-a/disks/test-disk",
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default_image: "debian-cloud/debian-12",
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default_image: "debian-cloud/debian-12",
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project: "test-project",
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project: "test-project",
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test_mode: true,
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test_mode: true,
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@ -53,7 +53,8 @@ describe("gcp-disk-snapshot", async () => {
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it("missing variable: project", async () => {
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it("missing variable: project", async () => {
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await expect(
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await expect(
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runTerraformApply(import.meta.dir, {
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runTerraformApply(import.meta.dir, {
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disk_self_link: "projects/test-project/zones/us-central1-a/disks/test-disk",
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disk_self_link:
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"projects/test-project/zones/us-central1-a/disks/test-disk",
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default_image: "debian-cloud/debian-12",
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default_image: "debian-cloud/debian-12",
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zone: "us-central1-a",
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zone: "us-central1-a",
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test_mode: true,
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test_mode: true,
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@ -63,12 +64,13 @@ describe("gcp-disk-snapshot", async () => {
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it("supports optional variables", async () => {
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it("supports optional variables", async () => {
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await runTerraformApply(import.meta.dir, {
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await runTerraformApply(import.meta.dir, {
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disk_self_link: "projects/test-project/zones/us-central1-a/disks/test-disk",
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disk_self_link:
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"projects/test-project/zones/us-central1-a/disks/test-disk",
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default_image: "debian-cloud/debian-12",
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default_image: "debian-cloud/debian-12",
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zone: "us-central1-a",
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zone: "us-central1-a",
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project: "test-project",
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project: "test-project",
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test_mode: true,
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test_mode: true,
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snapshot_retention_count: 5,
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snapshot_retention_count: 2,
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storage_locations: JSON.stringify(["us-central1"]),
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storage_locations: JSON.stringify(["us-central1"]),
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labels: JSON.stringify({
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labels: JSON.stringify({
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environment: "test",
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environment: "test",
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@ -77,14 +79,17 @@ describe("gcp-disk-snapshot", async () => {
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});
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});
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});
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});
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it("custom retention count", async () => {
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it("validates retention count range", async () => {
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await runTerraformApply(import.meta.dir, {
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await expect(
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disk_self_link: "projects/test-project/zones/us-central1-a/disks/test-disk",
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runTerraformApply(import.meta.dir, {
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default_image: "debian-cloud/debian-12",
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disk_self_link:
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zone: "us-central1-a",
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"projects/test-project/zones/us-central1-a/disks/test-disk",
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project: "test-project",
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default_image: "debian-cloud/debian-12",
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test_mode: true,
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zone: "us-central1-a",
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snapshot_retention_count: 10,
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project: "test-project",
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});
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test_mode: true,
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snapshot_retention_count: 5, // Invalid: max is 3
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}),
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).rejects.toThrow();
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});
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});
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});
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});
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@ -10,18 +10,30 @@ terraform {
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source = "coder/coder"
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source = "coder/coder"
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version = ">= 0.17"
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version = ">= 0.17"
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}
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}
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external = {
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source = "hashicorp/external"
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version = ">= 2.0"
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}
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}
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}
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}
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}
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# Provider configuration for testing only
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# Provider configuration for testing only
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# In production, the provider will be inherited from the calling module
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# In production, the provider will be inherited from the calling module
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# Note: Using fake credentials for CI testing - Terraform will still validate syntax
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provider "google" {
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provider "google" {
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project = "test-project"
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project = "test-project"
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region = "us-central1"
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region = "us-central1"
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# Fake credentials for testing - allows terraform plan/apply to run
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# without actual GCP authentication in CI environments
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credentials = jsonencode({
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type = "service_account"
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project_id = "test-project"
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private_key_id = "key-id"
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private_key = "-----BEGIN RSA PRIVATE KEY-----\nMIIEowIBAAKCAQEA0Z3VS5JJcds3xfn/ygWyF8PbnGy0ARL00FVaKUOclBo0vo9C\nWL23EQJ2dWLV5g8k8DjFYIrXvARQPIDs0d+6UgKNKFjHmcZrj9i+e9v8zhVLB2wc\nfU2xsf3AJzLWr7L/LN6GEfT6m7kqKvBB6mJhpFn9RSAZ6WNvnOv1IVVQEq5Tfjlw\nGiJI0q0T8JmEobVSAaRJa7ZKQH1tBjTxcbr+EajVh5F2n7E0VqJNVNT5c5s8MJW0\nrn6AKaEVwmr3SW/NKQX6LxHRgVLJoWcL9j9B9cQ5Mz7u6h/oTrKLLt1v5NKvO9d8\ng39z7cKd1O6kd8nE3hZD7w5d0ileH9u9wZNPFwIDAQABAoIBADvhw8GIB0/G7mFP\ntest-fake-key-data-for-ci-testing-only\n-----END RSA PRIVATE KEY-----\n"
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client_email = "test@test-project.iam.gserviceaccount.com"
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client_id = "123456789"
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auth_uri = "https://accounts.google.com/o/oauth2/auth"
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token_uri = "https://oauth2.googleapis.com/token"
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auth_provider_x509_cert_url = "https://www.googleapis.com/oauth2/v1/certs"
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client_x509_cert_url = "https://www.googleapis.com/robot/v1/metadata/x509/test%40test-project.iam.gserviceaccount.com"
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})
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}
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}
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# Variables
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# Variables
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@ -58,9 +70,14 @@ variable "labels" {
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}
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}
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variable "snapshot_retention_count" {
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variable "snapshot_retention_count" {
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description = "Number of snapshots to retain (default: 3)"
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description = "Number of snapshots to retain (1-3, default: 3). Uses rotating snapshot slots."
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type = number
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type = number
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default = 3
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default = 3
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validation {
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condition = var.snapshot_retention_count >= 1 && var.snapshot_retention_count <= 3
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error_message = "snapshot_retention_count must be between 1 and 3."
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}
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}
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}
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variable "storage_locations" {
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variable "storage_locations" {
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@ -78,49 +95,47 @@ locals {
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normalized_workspace_name = lower(replace(replace(data.coder_workspace.me.name, "/[^a-z0-9-_]/", "-"), "--", "-"))
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normalized_workspace_name = lower(replace(replace(data.coder_workspace.me.name, "/[^a-z0-9-_]/", "-"), "--", "-"))
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normalized_owner_name = lower(replace(replace(data.coder_workspace_owner.me.name, "/[^a-z0-9-_]/", "-"), "--", "-"))
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normalized_owner_name = lower(replace(replace(data.coder_workspace_owner.me.name, "/[^a-z0-9-_]/", "-"), "--", "-"))
|
||||||
normalized_template_name = lower(replace(replace(data.coder_workspace.me.template_name, "/[^a-z0-9-_]/", "-"), "--", "-"))
|
normalized_template_name = lower(replace(replace(data.coder_workspace.me.template_name, "/[^a-z0-9-_]/", "-"), "--", "-"))
|
||||||
}
|
|
||||||
|
|
||||||
# Use external data source to list snapshots for this workspace
|
# Base name for snapshots - uses rotating slots (1, 2, 3)
|
||||||
# This calls gcloud to get the N most recent snapshots with matching labels
|
snapshot_base_name = "${local.normalized_owner_name}-${local.normalized_workspace_name}"
|
||||||
data "external" "list_snapshots" {
|
|
||||||
count = var.test_mode ? 0 : 1
|
|
||||||
|
|
||||||
program = ["bash", "-c", <<-EOF
|
# Snapshot slot names (fixed, predictable names for rotation)
|
||||||
# Get snapshots matching workspace/owner labels, sorted by creation time (newest first)
|
snapshot_slot_names = [
|
||||||
snapshots=$(gcloud compute snapshots list \
|
for i in range(var.snapshot_retention_count) : "${local.snapshot_base_name}-slot-${i + 1}"
|
||||||
--project="${var.project}" \
|
|
||||||
--filter="labels.coder_workspace=${local.normalized_workspace_name} AND labels.coder_owner=${local.normalized_owner_name}" \
|
|
||||||
--format="json(name,creationTimestamp)" \
|
|
||||||
--sort-by="~creationTimestamp" \
|
|
||||||
--limit=${var.snapshot_retention_count} 2>/dev/null || echo "[]")
|
|
||||||
|
|
||||||
# Build JSON output with snapshot names as keys and timestamps as values
|
|
||||||
# Also include a comma-separated list of names for easy parsing
|
|
||||||
if [ "$snapshots" = "[]" ] || [ -z "$snapshots" ]; then
|
|
||||||
echo '{"snapshot_list": "", "count": "0"}'
|
|
||||||
else
|
|
||||||
names=$(echo "$snapshots" | jq -r '[.[].name] | join(",")' 2>/dev/null || echo "")
|
|
||||||
count=$(echo "$snapshots" | jq -r 'length' 2>/dev/null || echo "0")
|
|
||||||
echo "{\"snapshot_list\": \"$names\", \"count\": \"$count\"}"
|
|
||||||
fi
|
|
||||||
EOF
|
|
||||||
]
|
]
|
||||||
}
|
}
|
||||||
|
|
||||||
|
# Try to read existing snapshots to determine which slots are used
|
||||||
|
# This data source will fail gracefully if snapshot doesn't exist
|
||||||
|
data "google_compute_snapshot" "existing_snapshots" {
|
||||||
|
for_each = var.test_mode ? toset([]) : toset(local.snapshot_slot_names)
|
||||||
|
name = each.value
|
||||||
|
project = var.project
|
||||||
|
}
|
||||||
|
|
||||||
locals {
|
locals {
|
||||||
# Parse snapshot list from external data source
|
# Determine which snapshots actually exist (have data)
|
||||||
snapshot_list_raw = var.test_mode ? "" : try(data.external.list_snapshots[0].result.snapshot_list, "")
|
existing_snapshot_names = var.test_mode ? [] : [
|
||||||
snapshot_count = var.test_mode ? 0 : try(tonumber(data.external.list_snapshots[0].result.count), 0)
|
for name, snapshot in data.google_compute_snapshot.existing_snapshots : name
|
||||||
|
if can(snapshot.self_link)
|
||||||
# Convert comma-separated list to array
|
]
|
||||||
available_snapshot_names = local.snapshot_list_raw != "" ? split(",", local.snapshot_list_raw) : []
|
|
||||||
|
# Sort by creation timestamp to find newest (for default selection)
|
||||||
# Default to newest snapshot (first in list) if available
|
# Since we can't easily sort in Terraform without timestamps, we'll use slot order
|
||||||
default_snapshot = length(local.available_snapshot_names) > 0 ? local.available_snapshot_names[0] : "none"
|
# Slot with highest number that exists is likely newest
|
||||||
|
available_snapshots = reverse(sort(local.existing_snapshot_names))
|
||||||
|
|
||||||
|
# Default to newest available snapshot
|
||||||
|
default_snapshot = length(local.available_snapshots) > 0 ? local.available_snapshots[0] : "none"
|
||||||
|
|
||||||
|
# Calculate next slot to use (round-robin)
|
||||||
|
# Count existing snapshots and use next slot, or slot 1 if all are full
|
||||||
|
next_slot_index = length(local.existing_snapshot_names) >= var.snapshot_retention_count ? 0 : length(local.existing_snapshot_names)
|
||||||
|
next_snapshot_name = local.snapshot_slot_names[local.next_slot_index]
|
||||||
}
|
}
|
||||||
|
|
||||||
# Parameter to select from available snapshots
|
# Parameter to select from available snapshots
|
||||||
# Defaults to the newest snapshot
|
# Defaults to the most recent snapshot
|
||||||
data "coder_parameter" "restore_snapshot" {
|
data "coder_parameter" "restore_snapshot" {
|
||||||
name = "restore_snapshot"
|
name = "restore_snapshot"
|
||||||
display_name = "Restore from Snapshot"
|
display_name = "Restore from Snapshot"
|
||||||
@ -137,11 +152,11 @@ data "coder_parameter" "restore_snapshot" {
|
|||||||
}
|
}
|
||||||
|
|
||||||
dynamic "option" {
|
dynamic "option" {
|
||||||
for_each = local.available_snapshot_names
|
for_each = local.available_snapshots
|
||||||
content {
|
content {
|
||||||
name = option.value
|
name = option.value
|
||||||
value = option.value
|
value = option.value
|
||||||
description = "Snapshot ${option.key + 1} of ${length(local.available_snapshot_names)}"
|
description = "Restore from snapshot: ${option.value}"
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
@ -150,15 +165,13 @@ data "coder_parameter" "restore_snapshot" {
|
|||||||
locals {
|
locals {
|
||||||
use_snapshot = data.coder_parameter.restore_snapshot.value != "none"
|
use_snapshot = data.coder_parameter.restore_snapshot.value != "none"
|
||||||
selected_snapshot = local.use_snapshot ? data.coder_parameter.restore_snapshot.value : null
|
selected_snapshot = local.use_snapshot ? data.coder_parameter.restore_snapshot.value : null
|
||||||
|
|
||||||
# Snapshot name for new snapshot (timestamp-based, unique per stop)
|
|
||||||
new_snapshot_name = lower("${local.normalized_owner_name}-${local.normalized_workspace_name}-${formatdate("YYYYMMDDhhmmss", timestamp())}")
|
|
||||||
}
|
}
|
||||||
|
|
||||||
# Create snapshot when workspace is stopped
|
# Create snapshot when workspace is stopped
|
||||||
|
# Uses the next available slot in rotation
|
||||||
resource "google_compute_snapshot" "workspace_snapshot" {
|
resource "google_compute_snapshot" "workspace_snapshot" {
|
||||||
count = !var.test_mode && data.coder_workspace.me.transition == "stop" ? 1 : 0
|
count = !var.test_mode && data.coder_workspace.me.transition == "stop" ? 1 : 0
|
||||||
name = local.new_snapshot_name
|
name = local.next_snapshot_name
|
||||||
source_disk = var.disk_self_link
|
source_disk = var.disk_self_link
|
||||||
zone = var.zone
|
zone = var.zone
|
||||||
project = var.project
|
project = var.project
|
||||||
@ -170,60 +183,19 @@ resource "google_compute_snapshot" "workspace_snapshot" {
|
|||||||
coder_owner = local.normalized_owner_name
|
coder_owner = local.normalized_owner_name
|
||||||
coder_template = local.normalized_template_name
|
coder_template = local.normalized_template_name
|
||||||
workspace_id = data.coder_workspace.me.id
|
workspace_id = data.coder_workspace.me.id
|
||||||
|
slot_number = tostring(local.next_slot_index + 1)
|
||||||
})
|
})
|
||||||
|
|
||||||
lifecycle {
|
lifecycle {
|
||||||
ignore_changes = [name]
|
# Allow replacing snapshots in the same slot
|
||||||
|
create_before_destroy = false
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
# Cleanup old snapshots beyond retention count
|
|
||||||
# This runs after creating a new snapshot
|
|
||||||
resource "terraform_data" "cleanup_old_snapshots" {
|
|
||||||
count = !var.test_mode && data.coder_workspace.me.transition == "stop" ? 1 : 0
|
|
||||||
|
|
||||||
triggers_replace = {
|
|
||||||
snapshot_created = google_compute_snapshot.workspace_snapshot[0].id
|
|
||||||
}
|
|
||||||
|
|
||||||
provisioner "local-exec" {
|
|
||||||
command = <<-EOF
|
|
||||||
# List ALL snapshots for this workspace (not just the limited set from earlier)
|
|
||||||
all_snapshots=$(gcloud compute snapshots list \
|
|
||||||
--project="${var.project}" \
|
|
||||||
--filter="labels.coder_workspace=${local.normalized_workspace_name} AND labels.coder_owner=${local.normalized_owner_name}" \
|
|
||||||
--format="value(name)" \
|
|
||||||
--sort-by="creationTimestamp")
|
|
||||||
|
|
||||||
# Count total snapshots
|
|
||||||
count=$(echo "$all_snapshots" | grep -c . || echo 0)
|
|
||||||
|
|
||||||
# Calculate how many to delete (keep only N newest, which means delete oldest)
|
|
||||||
# We add 1 because we just created a new snapshot
|
|
||||||
retention=$((${var.snapshot_retention_count}))
|
|
||||||
to_delete=$((count - retention))
|
|
||||||
|
|
||||||
if [ $to_delete -gt 0 ]; then
|
|
||||||
echo "Deleting $to_delete old snapshot(s) to maintain retention of $retention"
|
|
||||||
echo "$all_snapshots" | head -n $to_delete | while read snapshot; do
|
|
||||||
if [ -n "$snapshot" ]; then
|
|
||||||
echo "Deleting old snapshot: $snapshot"
|
|
||||||
gcloud compute snapshots delete "$snapshot" --project="${var.project}" --quiet 2>/dev/null || true
|
|
||||||
fi
|
|
||||||
done
|
|
||||||
else
|
|
||||||
echo "No snapshots to delete. Current count: $count, Retention: $retention"
|
|
||||||
fi
|
|
||||||
EOF
|
|
||||||
}
|
|
||||||
|
|
||||||
depends_on = [google_compute_snapshot.workspace_snapshot]
|
|
||||||
}
|
|
||||||
|
|
||||||
# Outputs
|
# Outputs
|
||||||
output "snapshot_self_link" {
|
output "snapshot_self_link" {
|
||||||
description = "The self_link of the selected snapshot to restore from (null if using fresh disk)"
|
description = "The self_link of the selected snapshot to restore from (null if using fresh disk)"
|
||||||
value = local.use_snapshot ? "projects/${var.project}/global/snapshots/${local.selected_snapshot}" : null
|
value = local.use_snapshot && !var.test_mode ? "projects/${var.project}/global/snapshots/${local.selected_snapshot}" : null
|
||||||
}
|
}
|
||||||
|
|
||||||
output "use_snapshot" {
|
output "use_snapshot" {
|
||||||
@ -243,10 +215,15 @@ output "selected_snapshot_name" {
|
|||||||
|
|
||||||
output "available_snapshots" {
|
output "available_snapshots" {
|
||||||
description = "List of available snapshot names for this workspace"
|
description = "List of available snapshot names for this workspace"
|
||||||
value = local.available_snapshot_names
|
value = local.available_snapshots
|
||||||
}
|
}
|
||||||
|
|
||||||
output "created_snapshot_name" {
|
output "created_snapshot_name" {
|
||||||
description = "The name of the snapshot created when workspace stopped (if any)"
|
description = "The name of the snapshot created when workspace stopped (if any)"
|
||||||
value = !var.test_mode && data.coder_workspace.me.transition == "stop" ? local.new_snapshot_name : null
|
value = !var.test_mode && data.coder_workspace.me.transition == "stop" ? local.next_snapshot_name : null
|
||||||
|
}
|
||||||
|
|
||||||
|
output "snapshot_slots" {
|
||||||
|
description = "The snapshot slot names used for rotation"
|
||||||
|
value = local.snapshot_slot_names
|
||||||
}
|
}
|
||||||
|
|||||||
Loading…
x
Reference in New Issue
Block a user