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delta_repo.go
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delta_repo.go
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//
// Copyright © 2017-2019 Solus Project
//
// 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 jobs
import (
"fmt"
log "github.com/sirupsen/logrus"
"github.com/getsolus/ferryd/src/ferryd/core"
)
// DeltaRepoJobHandler is responsible for delta'ing repositories and should only
// ever be used in sequential queues.
type DeltaRepoJobHandler struct {
repoID string
}
// NewDeltaRepoJob will return a job suitable for adding to the job processor
func NewDeltaRepoJob(id string) *JobEntry {
return &JobEntry{
sequential: true,
Type: DeltaRepo,
Params: []string{id},
}
}
// NewDeltaRepoJobHandler will create a job handler for the input job and ensure it validates
func NewDeltaRepoJobHandler(j *JobEntry) (*DeltaRepoJobHandler, error) {
if len(j.Params) != 1 {
return nil, fmt.Errorf("job has invalid parameters")
}
return &DeltaRepoJobHandler{
repoID: j.Params[0],
}, nil
}
// Execute will delta the given repository if possible
// Note that it will NOT index the repository, this is a separate step
// as it takes a significant amount of time to fully produce all initial
// deltas.
//
// This operation is ideally only used after the first import of a repository,
// after then deltas will be produced on the fly.
func (j *DeltaRepoJobHandler) Execute(jproc *Processor, manager *core.Manager) error {
packageNames, err := manager.GetPackageNames(j.repoID)
if err != nil {
return err
}
// Skip an empty repository
if len(packageNames) < 1 {
log.WithFields(log.Fields{
"repo": j.repoID,
}).Warning("Requested delta for empty repository")
return nil
}
// Fire off parallel delta jobs for every package in this repository
for _, name := range packageNames {
jproc.PushJob(NewDeltaJob(j.repoID, name))
}
return nil
}
// Describe returns a human readable description for this job
func (j *DeltaRepoJobHandler) Describe() string {
return fmt.Sprintf("Produce deltas for '%s'", j.repoID)
}