Closes https://github.com/coder/internal/issues/312
Depends on https://github.com/coder/terraform-provider-coder/pull/408
This PR adds support for defining an **autoscaling block** for
prebuilds, allowing number of desired instances to scale dynamically
based on a schedule.
Example usage:
```
data "coder_workspace_preset" "us-nix" {
...
prebuilds = {
instances = 0 # default to 0 instances
scheduling = {
timezone = "UTC" # a single timezone is used for simplicity
# Scale to 3 instances during the work week
schedule {
cron = "* 8-18 * * 1-5" # from 8AM–6:59PM, Mon–Fri, UTC
instances = 3 # scale to 3 instances
}
# Scale to 1 instance on Saturdays for urgent support queries
schedule {
cron = "* 8-14 * * 6" # from 8AM–2:59PM, Sat, UTC
instances = 1 # scale to 1 instance
}
}
}
}
```
### Behavior
- Multiple `schedule` blocks per `prebuilds` block are supported.
- If the current time matches any defined autoscaling schedule, the
corresponding number of instances is used.
- If no schedule matches, the **default instance count**
(`prebuilds.instances`) is used as a fallback.
### Why
This feature allows prebuild instance capacity to adapt to predictable
usage patterns, such as:
- Scaling up during business hours or high-demand periods
- Reducing capacity during off-hours to save resources
### Cron specification
The cron specification is interpreted as a **continuous time range.**
For example, the expression:
```
* 9-18 * * 1-5
```
is intended to represent a continuous range from **09:00 to 18:59**,
Monday through Friday.
However, due to minor implementation imprecision, it is currently
interpreted as a range from **08:59:00 to 18:58:59**, Monday through
Friday.
This slight discrepancy arises because the evaluation is based on
whether a specific **point in time** falls within the range, using the
`github.com/coder/coder/v2/coderd/schedule/cron` library, which performs
per-minute matching rather than strict range evaluation.
---------
Co-authored-by: Danny Kopping <danny@coder.com>
I'll be honest I'm not even really sure the point of this test but it
was failing due to
```
2025-06-16T15:01:54.0863251Z Error: Received unexpected error:
2025-06-16T15:01:54.0863554Z acquire job:
2025-06-16T15:01:54.0864230Z github.com/coder/coder/v2/coderd/provisionerdserver.(*server).AcquireJob
2025-06-16T15:01:54.0865173Z /home/runner/work/coder/coder/coderd/provisionerdserver/provisionerdserver.go:329
2025-06-16T15:01:54.0865683Z - failed to acquire job:
2025-06-16T15:01:54.0866374Z github.com/coder/coder/v2/coderd/provisionerdserver.(*Acquirer).AcquireJob
2025-06-16T15:01:54.0867262Z /home/runner/work/coder/coder/coderd/provisionerdserver/acquirer.go:148
2025-06-16T15:01:54.0867819Z - pq: canceling statement due to user request
```
which is certainly unintended.
This PR implements protobuf streaming to handle large module files by:
1. **Streaming large payloads**: When module files exceed the 4MB limit,
they're streamed in chunks using a new UploadFile RPC method
2. **Database storage**: Streamed files are stored in the database and
referenced by hash for deduplication
3. **Backward compatibility**: Small module files continue using the
existing direct payload method
Relates to https://github.com/coder/coder/issues/15432
Ensures that no workspace build timings with zero values for started_at or ended_at are inserted into the DB or returned from the API.
## Summary
This PR introduces support for expiration policies in prebuilds. The TTL
(time-to-live) is retrieved from the Terraform configuration
([terraform-provider-coder
PR](https://github.com/coder/terraform-provider-coder/pull/404)):
```
prebuilds = {
instances = 2
expiration_policy {
ttl = 86400
}
}
```
**Note**: Since there is no need for precise TTL enforcement down to the
second, in this implementation expired prebuilds are handled in a single
reconciliation cycle: they are deleted, and new instances are created
only if needed to match the desired count.
## Changes
* The outcome of a reconciliation cycle is now expressed as a slice of
reconciliation actions, instead of a single aggregated action.
* Adjusted reconciliation logic to delete expired prebuilds and
guarantee that the number of desired instances is correct.
* Updated relevant data structures and methods to support expiration
policies parameters.
* Added documentation to `Prebuilt workspaces` page
* Update `terraform-provider-coder` to version 2.5.0:
https://github.com/coder/terraform-provider-coder/releases/tag/v2.5.0
Depends on: https://github.com/coder/terraform-provider-coder/pull/404
Fixes: https://github.com/coder/coder/issues/17916
This PR refactors the CompleteJob function to use database transactions
more consistently for better atomicity guarantees. The large function
was broken down into three specialized handlers:
- completeTemplateImportJob
- completeWorkspaceBuildJob
- completeTemplateDryRunJob
Each handler now uses the Database.InTx wrapper to ensure all database
operations for a job completion are performed within a single
transaction, preventing partial updates in case of failures.
Added comprehensive tests for transaction behavior for each job type.
Fixes#17694🤖 Generated with [Claude Code](https://claude.ai/code)
Co-authored-by: Claude <noreply@anthropic.com>
Closes https://github.com/coder/internal/issues/369
We can't know whether a replacement (i.e. drift of terraform state
leading to a resource needing to be deleted/recreated) will take place
apriori; we can only detect it at `plan` time, because the provider
decides whether a resource must be replaced and it cannot be inferred
through static analysis of the template.
**This is likely to be the most common gotcha with using prebuilds,
since it requires a slight template modification to use prebuilds
effectively**, so let's head this off before it's an issue for
customers.
Drift details will now be logged in the workspace build logs:
Plus a notification will be sent to template admins when this situation
arises:
A new metric - `coderd_prebuilt_workspaces_resource_replacements_total`
- will also increment each time a workspace encounters replacements.
We only track _that_ a resource replacement occurred, not how many. Just
one is enough to ruin a prebuild, but we can't know apriori which
replacement would cause this.
For example, say we have 2 replacements: a `docker_container` and a
`null_resource`; we don't know which one might
cause an issue (or indeed if either would), so we just track the
replacement.
---------
Signed-off-by: Danny Kopping <dannykopping@gmail.com>
This pull request allows coder workspace agents to be reinitialized when
a prebuilt workspace is claimed by a user. This facilitates the transfer
of ownership between the anonymous prebuilds system user and the new
owner of the workspace.
Only a single agent per prebuilt workspace is supported for now, but
plumbing has already been done to facilitate the seamless transition to
multi-agent support.
---------
Signed-off-by: Danny Kopping <dannykopping@gmail.com>
Co-authored-by: Danny Kopping <dannykopping@gmail.com>
This change adds support for devcontainer autostart in workspaces. The
preconditions for utilizing this feature are:
1. The `coder_devcontainer` resource must be defined in Terraform
2. By the time the startup scripts have completed,
- The `@devcontainers/cli` tool must be installed
- The given workspace folder must contain a devcontainer configuration
Example Terraform:
```tf
resource "coder_devcontainer" "coder" {
agent_id = coder_agent.main.id
workspace_folder = "/home/coder/coder"
config_path = ".devcontainer/devcontainer.json" # (optional)
}
```
Closes#16423
- Update go.mod to use Go 1.24.1
- Update GitHub Actions setup-go action to use Go 1.24.1
- Fix linting issues with golangci-lint by:
- Updating to golangci-lint v1.57.1 (more compatible with Go 1.24.1)
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
---------
Co-authored-by: Claude <claude@anthropic.com>
In the presence of multiple devcontainers, it would be nice to
differentiate them by name. This change inherits the resource name from
terraform.
Refs #17076
This change allows specifying devcontainers in terraform and plumbs it
through to the agent via agent manifest.
This will be used for autostarting devcontainers in a workspace.
Depends on coder/terraform-provider-coder#368
Updates #16423
The experimental functions in `golang.org/x/exp/slices` are now
available in the standard library since Go 1.21.
Reference: https://go.dev/doc/go1.21#slices
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
Underscores and double hyphens are now blocked. The regex is almost the
exact same as the `coder_app` `slug` regex, but uppercase characters are
still permitted.
Relates to https://github.com/coder/coder-desktop-macos/issues/54
Currently, it's possible to have two agents within the same workspace whose names only differ in capitalization:
This leads to an ambiguity in two cases:
- For CoderVPN, we'd like to allow support to workspaces with a hostname of the form: `agent.workspace.username.coder`.
- Workspace apps (`coder_app`s) currently use subdomains of the form: `<app>--<agent>--<workspace>--<username>(--<suffix>)?`.
Of note is that DNS hosts must be strictly lower case, hence the ambiguity.
This fix is technically a breaking change, but only for the incredibly rare use case where a user has:
- A workspace with two agents
- Those agent names differ only in capitalization.
Those templates & workspaces will now fail to build. This can be fixed by choosing wholly unique names for the agents.
This pull request adds support for presets to coder provisioners.
If a template defines presets using a compatible version of the
provider, then this PR will allow those presets to be persisted to the
control plane database for use in workspace creation.
As requested for [this
issue](https://github.com/coder/internal/issues/245) we need to have a
new resource `resources_monitoring` in the agent.
It needs to be parsed from the provisioner and inserted into a new db
table.
As we worked on adding a `open_in` parameter for workspace_apps - we
initially created three options :
- window
- slim_window
- tab
After further investigation, `window` should not be used and has to be
removed.
ℹ️ I decided to remove the option instead of deprecating it as we've not
created any release nor documented the feature. Can be discussed.
Relates to https://github.com/coder/coder/issues/15082
Further to https://github.com/coder/coder/pull/15429, this reduces the
amount of false-positives returned by the 'is eligible for autostart'
part of the query. We achieve this by calculating the 'next start at'
time of the workspace, storing it in the database, and using it in our
`GetWorkspacesEligibleForTransition` query.
The prior implementation of the 'is eligible for autostart' query would
return _all_ workspaces that at some point in the future _might_ be
eligible for autostart. This now ensures we only return workspaces that
_should_ be eligible for autostart.
We also now pass `currentTick` instead of `t` to the
`GetWorkspacesEligibleForTransition` query as otherwise we'll have one
round of workspaces that are skipped by `isEligibleForTransition` due to
`currentTick` being a truncated version of `t`.
