mirror of https://github.com/coder/coder.git
86 lines
1.7 KiB
Go
86 lines
1.7 KiB
Go
package dbpurge
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import (
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"context"
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"errors"
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"io"
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"time"
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"golang.org/x/sync/errgroup"
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"cdr.dev/slog"
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"github.com/coder/coder/v2/coderd/database"
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"github.com/coder/coder/v2/coderd/database/dbauthz"
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)
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const (
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delay = 10 * time.Minute
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)
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// New creates a new periodically purging database instance.
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// It is the caller's responsibility to call Close on the returned instance.
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//
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// This is for cleaning up old, unused resources from the database that take up space.
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func New(ctx context.Context, logger slog.Logger, db database.Store) io.Closer {
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closed := make(chan struct{})
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ctx, cancelFunc := context.WithCancel(ctx)
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//nolint:gocritic // The system purges old db records without user input.
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ctx = dbauthz.AsSystemRestricted(ctx)
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// Use time.Nanosecond to force an initial tick. It will be reset to the
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// correct duration after executing once.
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ticker := time.NewTicker(time.Nanosecond)
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doTick := func() {
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defer ticker.Reset(delay)
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var eg errgroup.Group
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eg.Go(func() error {
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return db.DeleteOldWorkspaceAgentLogs(ctx)
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})
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eg.Go(func() error {
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return db.DeleteOldWorkspaceAgentStats(ctx)
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})
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eg.Go(func() error {
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return db.DeleteOldProvisionerDaemons(ctx)
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})
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err := eg.Wait()
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if err != nil {
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if errors.Is(err, context.Canceled) {
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return
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}
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logger.Error(ctx, "failed to purge old database entries", slog.Error(err))
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}
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}
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go func() {
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defer close(closed)
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defer ticker.Stop()
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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ticker.Stop()
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doTick()
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}
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}
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}()
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return &instance{
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cancel: cancelFunc,
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closed: closed,
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}
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}
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type instance struct {
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cancel context.CancelFunc
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closed chan struct{}
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}
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func (i *instance) Close() error {
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i.cancel()
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<-i.closed
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return nil
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}
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