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[DONT MERGE] detailed log in NextTask() #34

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[DONT MERGE] detailed log in NextTask() #34

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0a64c4b
wip
everpeace Sep 29, 2020
c28533b
detailed log in code path from NextTask()
everpeace Sep 29, 2020
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3 changes: 3 additions & 0 deletions pkg/backend/redis/queue.go
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ package redis
import (
"context"
"encoding/json"
"fmt"
"reflect"
"time"

Expand Down Expand Up @@ -271,8 +272,10 @@ func (b *Backend) ensureQueueExistsByUID(rds redis.Cmdable, uid string) (*taskqu
rawQueue, err := rds.Get(b.queueKey(uid)).Result()
switch {
case err == redis.Nil:
b.Logger.Error().Stack().Err(err).Str("redis cmd", fmt.Sprintf("GET %s", b.queueKey(uid))).Msg("debug-next-task")
return nil, iface.TaskQueueNotFound
case err != nil:
b.Logger.Error().Stack().Err(err).Str("redis cmd", fmt.Sprintf("GET %s", b.queueKey(uid))).Msg("debug-next-task")
return nil, err
}

Expand Down
8 changes: 8 additions & 0 deletions pkg/backend/redis/task.go
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Original file line number Diff line number Diff line change
Expand Up @@ -398,9 +398,11 @@ func (b *Backend) NextTask(ctx context.Context, queueUID, workerUID uuid.UUID) (
toPop := false
numWorkerPending, err := tx.LLen(workerPendingQueueKey).Result()
if err == redis.Nil {
b.Logger.Error().Stack().Err(err).Str("redis cmd", fmt.Sprintf("LLEN %s", workerPendingQueueKey)).Msg("debug-next-task")
toPop = true
}
if err != nil {
b.Logger.Error().Stack().Err(err).Str("redis cmd", fmt.Sprintf("LLEN %s", workerPendingQueueKey)).Msg("debug-next-task")
return err
}
if numWorkerPending == 0 {
Expand All @@ -413,11 +415,13 @@ func (b *Backend) NextTask(ctx context.Context, queueUID, workerUID uuid.UUID) (
return nil
})
if err == redis.Nil {
b.Logger.Error().Stack().Err(err).Msg("debug-next-task: this should not happen.")
return backoff.Permanent(iface.TaskQueueEmptyError)
}
return err
}, queueKey, workerPendingQueueKey)
if err != nil {
b.Logger.Error().Stack().Err(err).Str("redis cmd", fmt.Sprintf("MULTI; RPOPLPUSH %s %s; EXEC", pendingQueueKey, workerPendingQueueKey)).Msg("debug-next-task")
return nil, err
}

Expand Down Expand Up @@ -454,9 +458,11 @@ func (b *Backend) NextTask(ctx context.Context, queueUID, workerUID uuid.UUID) (
// peak worker pending queue
taskUIDs, err := tx.LRange(workerPendingQueueKey, -1, -1).Result()
if err == redis.Nil {
b.Logger.Error().Stack().Err(err).Str("redis cmd", fmt.Sprintf("LRANGE %s -1 -1", workerPendingQueueKey)).Msg("debug-next-task")
return backoff.Permanent(iface.TaskQueueEmptyError)
}
if err != nil {
b.Logger.Error().Stack().Err(err).Str("redis cmd", fmt.Sprintf("LRANGE %s -1 -1", workerPendingQueueKey)).Msg("debug-next-task")
return err
}
if len(taskUIDs) == 0 {
Expand All @@ -466,6 +472,7 @@ func (b *Backend) NextTask(ctx context.Context, queueUID, workerUID uuid.UUID) (
// get Task and transit to Received
raw, err := tx.Get(b.taskKey(queue.UID.String(), taskUIDs[0])).Result()
if err != nil {
b.Logger.Error().Stack().Err(err).Str("redis cmd", fmt.Sprintf("Get %s", b.taskKey(queue.UID.String(), taskUIDs[0]))).Msg("debug-next-task")
return err
}
t = &task.Task{}
Expand Down Expand Up @@ -504,6 +511,7 @@ func (b *Backend) NextTask(ctx context.Context, queueUID, workerUID uuid.UUID) (
workerPendingQueueKey, workerTasksKey,
)
if err != nil {
b.Logger.Error().Stack().Err(err).Str("redis cmd", fmt.Sprintf("MULTI; RPOP %s; SADD %s %s; Set %s <marshaled> -1; EXEC", workerPendingQueueKey, workerTasksKey, t.UID, b.taskKey(queue.UID.String(), t.UID))).Msg("debug-next-task")
return nil, err
}
return t, nil
Expand Down