0851eced36
- Create BackupResponder for NATS request-reply on config.backup.trigger - Extract public CollectAndPublish from BackupScheduler returning sha256 hash - Define BackupExecutor/BackupLocker/DeviceGetter interfaces for testability - Create RedisBackupLocker adapter wrapping redislock.Client - Wire BackupResponder into main.go lifecycle - All 6 tests pass with in-process NATS server Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
package bus
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import (
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"context"
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"time"
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"github.com/bsm/redislock"
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)
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// RedisBackupLocker adapts *redislock.Client to the BackupLocker interface.
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type RedisBackupLocker struct {
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client *redislock.Client
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}
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// NewRedisBackupLocker wraps a redislock.Client for use by BackupResponder.
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func NewRedisBackupLocker(client *redislock.Client) *RedisBackupLocker {
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return &RedisBackupLocker{client: client}
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}
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// ObtainLock attempts to acquire a Redis distributed lock.
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// Returns ErrLockNotObtained if the lock is already held.
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func (l *RedisBackupLocker) ObtainLock(ctx context.Context, key string, ttl time.Duration) (BackupLockHandle, error) {
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lock, err := l.client.Obtain(ctx, key, ttl, nil)
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if err == redislock.ErrNotObtained {
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return nil, ErrLockNotObtained
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}
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if err != nil {
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return nil, err
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}
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return &redisLockHandle{lock: lock}, nil
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}
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// redisLockHandle wraps *redislock.Lock to implement BackupLockHandle.
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type redisLockHandle struct {
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lock *redislock.Lock
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}
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// Release releases the held Redis lock.
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func (h *redisLockHandle) Release(ctx context.Context) error {
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return h.lock.Release(ctx)
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}
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