Files
coder/coderd/prebuilds/api.go
T
Susana Ferreira aad1b401c1 feat: add prebuilds reconciliation duration metric (#20535)
## Description

Adds `coderd_prebuilds_reconciliation_duration_seconds` histogram metric
to track the duration of each prebuilds reconciliation cycle.

This metric helps operators monitor reconciliation performance and
identify potential bottlenecks.

## Changes

- Added `ReconcileStats` struct to capture reconciliation cycle
statistics
- Updated `ReconcileAll()` to return stats including elapsed time
- Added histogram metric
`coderd_prebuilds_reconciliation_duration_seconds`
2025-10-29 12:52:30 +00:00

75 lines
2.7 KiB
Go

package prebuilds
import (
"context"
"database/sql"
"time"
"github.com/google/uuid"
"golang.org/x/xerrors"
"github.com/coder/coder/v2/coderd/database"
sdkproto "github.com/coder/coder/v2/provisionersdk/proto"
)
var (
ErrNoClaimablePrebuiltWorkspaces = xerrors.New("no claimable prebuilt workspaces found")
ErrAGPLDoesNotSupportPrebuiltWorkspaces = xerrors.New("prebuilt workspaces functionality is not supported under the AGPL license")
)
// ReconciliationOrchestrator manages the lifecycle of prebuild reconciliation.
// It runs a continuous loop to check and reconcile prebuild states, and can be stopped gracefully.
type ReconciliationOrchestrator interface {
Reconciler
// Run starts a continuous reconciliation loop that periodically calls ReconcileAll
// to ensure all prebuilds are in their desired states. The loop runs until the context
// is canceled or Stop is called.
Run(ctx context.Context)
// Stop gracefully shuts down the orchestrator with the given cause.
// The cause is used for logging and error reporting.
Stop(ctx context.Context, cause error)
// TrackResourceReplacement handles a pathological situation whereby a terraform resource is replaced due to drift,
// which can obviate the whole point of pre-provisioning a prebuilt workspace.
// See more detail at https://coder.com/docs/admin/templates/extending-templates/prebuilt-workspaces#preventing-resource-replacement.
TrackResourceReplacement(ctx context.Context, workspaceID, buildID uuid.UUID, replacements []*sdkproto.ResourceReplacement)
}
// ReconcileStats contains statistics about a reconciliation cycle.
type ReconcileStats struct {
Elapsed time.Duration
}
type Reconciler interface {
StateSnapshotter
// ReconcileAll orchestrates the reconciliation of all prebuilds across all templates.
// It takes a global snapshot of the system state and then reconciles each preset
// in parallel, creating or deleting prebuilds as needed to reach their desired states.
ReconcileAll(ctx context.Context) (ReconcileStats, error)
}
// StateSnapshotter defines the operations necessary to capture workspace prebuilds state.
type StateSnapshotter interface {
// SnapshotState captures the current state of all prebuilds across templates.
// It creates a global database snapshot that can be viewed as a collection of PresetSnapshots,
// each representing the state of prebuilds for a specific preset.
// MUST be called inside a repeatable-read transaction.
SnapshotState(ctx context.Context, store database.Store) (*GlobalSnapshot, error)
}
type Claimer interface {
Claim(
ctx context.Context,
now time.Time,
userID uuid.UUID,
name string,
presetID uuid.UUID,
autostartSchedule sql.NullString,
nextStartAt sql.NullTime,
ttl sql.NullInt64,
) (*uuid.UUID, error)
}