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woodpecker/server/queue/persistent.go
6543 fe31fb1e06
Drop error only on purpose or else report back or log (#514)
- Remove Deadcode
- Simplify Code
- Drop error only on purpose
2021-11-23 15:36:52 +01:00

133 lines
3.7 KiB
Go

// Copyright 2021 Woodpecker Authors
// Copyright 2018 Drone.IO Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package queue
import (
"context"
"github.com/pkg/errors"
"github.com/rs/zerolog/log"
"github.com/woodpecker-ci/woodpecker/server/model"
)
// WithTaskStore returns a queue that is backed by the TaskStore. This
// ensures the task Queue can be restored when the system starts.
func WithTaskStore(q Queue, s model.TaskStore) Queue {
tasks, _ := s.TaskList()
var toEnqueue []*Task
for _, task := range tasks {
toEnqueue = append(toEnqueue, &Task{
ID: task.ID,
Data: task.Data,
Labels: task.Labels,
Dependencies: task.Dependencies,
RunOn: task.RunOn,
DepStatus: make(map[string]string),
})
}
if err := q.PushAtOnce(context.Background(), toEnqueue); err != nil {
log.Error().Err(err).Msg("PushAtOnce failed")
}
return &persistentQueue{q, s}
}
type persistentQueue struct {
Queue
store model.TaskStore
}
// Push pushes a task to the tail of this queue.
func (q *persistentQueue) Push(c context.Context, task *Task) error {
if err := q.store.TaskInsert(&model.Task{
ID: task.ID,
Data: task.Data,
Labels: task.Labels,
Dependencies: task.Dependencies,
RunOn: task.RunOn,
}); err != nil {
return err
}
err := q.Queue.Push(c, task)
if err != nil {
if err2 := q.store.TaskDelete(task.ID); err2 != nil {
err = errors.Wrapf(err, "delete task '%s' failed: %v", task.ID, err2)
}
}
return err
}
// PushAtOnce pushes multiple tasks to the tail of this queue.
func (q *persistentQueue) PushAtOnce(c context.Context, tasks []*Task) error {
// TODO: invent store.NewSession who return context including a session and make TaskInsert & TaskDelete use it
for _, task := range tasks {
if err := q.store.TaskInsert(&model.Task{
ID: task.ID,
Data: task.Data,
Labels: task.Labels,
Dependencies: task.Dependencies,
RunOn: task.RunOn,
}); err != nil {
return err
}
}
err := q.Queue.PushAtOnce(c, tasks)
if err != nil {
for _, task := range tasks {
if err := q.store.TaskDelete(task.ID); err != nil {
return err
}
}
}
return err
}
// Poll retrieves and removes a task head of this queue.
func (q *persistentQueue) Poll(c context.Context, f Filter) (*Task, error) {
task, err := q.Queue.Poll(c, f)
if task != nil {
log.Debug().Msgf("pull queue item: %s: remove from backup", task.ID)
if derr := q.store.TaskDelete(task.ID); derr != nil {
log.Error().Msgf("pull queue item: %s: failed to remove from backup: %s", task.ID, derr)
} else {
log.Debug().Msgf("pull queue item: %s: successfully removed from backup", task.ID)
}
}
return task, err
}
// Evict removes a pending task from the queue.
func (q *persistentQueue) Evict(c context.Context, id string) error {
err := q.Queue.Evict(c, id)
if err == nil {
return q.store.TaskDelete(id)
}
return err
}
// EvictAtOnce removes a pending task from the queue.
func (q *persistentQueue) EvictAtOnce(c context.Context, ids []string) error {
if err := q.Queue.EvictAtOnce(c, ids); err != nil {
return err
}
for _, id := range ids {
if err := q.store.TaskDelete(id); err != nil {
return err
}
}
return nil
}