mirror of
https://github.com/woodpecker-ci/woodpecker.git
synced 2024-05-06 16:28:44 +00:00
140 lines
3.5 KiB
Go
140 lines
3.5 KiB
Go
// Copyright 2022 Woodpecker Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cron
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import (
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"context"
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"fmt"
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"time"
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"github.com/robfig/cron"
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"github.com/rs/zerolog/log"
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"github.com/woodpecker-ci/woodpecker/server/forge"
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"github.com/woodpecker-ci/woodpecker/server/model"
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"github.com/woodpecker-ci/woodpecker/server/pipeline"
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"github.com/woodpecker-ci/woodpecker/server/store"
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)
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const (
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// checkTime specifies the interval woodpecker checks for new crons to exec
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checkTime = 10 * time.Second
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// checkItems specifies the batch size of crons to retrieve per check from database
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checkItems = 10
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)
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// Start starts the cron scheduler loop
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func Start(ctx context.Context, store store.Store, forge forge.Forge) error {
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for {
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select {
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case <-ctx.Done():
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return nil
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case <-time.After(checkTime):
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go func() {
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now := time.Now()
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log.Trace().Msg("Cron: fetch next crons")
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crons, err := store.CronListNextExecute(now.Unix(), checkItems)
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if err != nil {
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log.Error().Err(err).Int64("now", now.Unix()).Msg("obtain cron cron list")
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return
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}
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for _, cron := range crons {
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if err := runCron(store, forge, cron, now); err != nil {
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log.Error().Err(err).Int64("cronID", cron.ID).Msg("run cron failed")
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}
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}
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}()
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}
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}
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}
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// CalcNewNext parses a cron string and calculates the next exec time based on it
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func CalcNewNext(schedule string, now time.Time) (time.Time, error) {
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// remove local timezone
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now = now.UTC()
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// TODO: allow the users / the admin to set a specific timezone
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c, err := cron.Parse(schedule)
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if err != nil {
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return time.Time{}, fmt.Errorf("cron parse schedule: %v", err)
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}
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return c.Next(now), nil
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}
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func runCron(store store.Store, forge forge.Forge, cron *model.Cron, now time.Time) error {
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log.Trace().Msgf("Cron: run id[%d]", cron.ID)
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ctx := context.Background()
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newNext, err := CalcNewNext(cron.Schedule, now)
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if err != nil {
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return err
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}
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// try to get lock on cron
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gotLock, err := store.CronGetLock(cron, newNext.Unix())
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if err != nil {
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return err
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}
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if !gotLock {
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// another go routine caught it
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return nil
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}
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repo, newPipeline, err := CreatePipeline(ctx, store, forge, cron)
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if err != nil {
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return err
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}
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_, err = pipeline.Create(ctx, store, repo, newPipeline)
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return err
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}
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func CreatePipeline(ctx context.Context, store store.Store, forge forge.Forge, cron *model.Cron) (*model.Repo, *model.Pipeline, error) {
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repo, err := store.GetRepo(cron.RepoID)
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if err != nil {
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return nil, nil, err
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}
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if cron.Branch == "" {
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// fallback to the repos default branch
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cron.Branch = repo.Branch
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}
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creator, err := store.GetUser(cron.CreatorID)
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if err != nil {
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return nil, nil, err
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}
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commit, err := forge.BranchHead(ctx, creator, repo, cron.Branch)
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if err != nil {
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return nil, nil, err
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}
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return repo, &model.Pipeline{
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Event: model.EventCron,
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Commit: commit,
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Ref: "refs/heads/" + cron.Branch,
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Branch: cron.Branch,
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Message: cron.Name,
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Timestamp: cron.NextExec,
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Sender: cron.Name,
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Link: repo.Link,
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}, nil
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}
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