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Adds redis sentinel support (gomods#1554)
* Adds redis sentinel support Fixes gomods#1553 * Fix redis-sentinel test hostnames * Fix redis master name again * Fix redis sentinel port in tests * Upgrade the redis client * Rmoeve accidental config change * Fix default config * Addresses review comments * Add documentation on single flight mechanisms * Fix spelling issues * Fix formatting Co-authored-by: Aaron Schlesinger <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| package stash | ||
|
|
||
| import ( | ||
| "github.com/go-redis/redis/v7" | ||
| "github.com/gomods/athens/pkg/errors" | ||
| "github.com/gomods/athens/pkg/storage" | ||
| ) | ||
|
|
||
| // WithRedisSentinelLock returns a distributed singleflight | ||
| // with a redis cluster that utilizes sentinel for quorum and failover | ||
| func WithRedisSentinelLock(endpoints []string, master, password string, checker storage.Checker) (Wrapper, error) { | ||
| const op errors.Op = "stash.WithRedisSentinelLock" | ||
| // The redis client constructor does not return an error when no endpoints | ||
| // are provided, so we check for ourselves. | ||
| if len(endpoints) == 0 { | ||
| return nil, errors.E(op, "no endpoints specified") | ||
| } | ||
| client := redis.NewFailoverClient(&redis.FailoverOptions{ | ||
| MasterName: master, | ||
| SentinelAddrs: endpoints, | ||
| SentinelPassword: password, | ||
| }) | ||
| _, err := client.Ping().Result() | ||
| if err != nil { | ||
| return nil, errors.E(op, err) | ||
| } | ||
| return func(s Stasher) Stasher { | ||
| return &redisLock{client, s, checker} | ||
| }, nil | ||
| } |
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