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package api
import (
"fmt"
"sort"
"github.com/aptly-dev/aptly/aptly"
"github.com/aptly-dev/aptly/deb"
"github.com/aptly-dev/aptly/task"
"github.com/aptly-dev/aptly/utils"
"github.com/gin-gonic/gin"
)
// @Summary DB Cleanup
// @Description **Cleanup Aptly DB**
// @Description Database cleanup removes information about unreferenced packages and deletes files in the package pool that aren’t used by packages anymore.
// @Description It is a good idea to run this command after massive deletion of mirrors, snapshots or local repos.
// @Tags Database
// @Produce json
// @Param _async query bool false "Run in background and return task object"
// @Success 200 {object} string "Output"
// @Failure 404 {object} Error "Not Found"
// @Router /api/db/cleanup [post]
func apiDBCleanup(c *gin.Context) {
resources := []string{string(task.AllResourcesKey)}
maybeRunTaskInBackground(c, "Clean up db", resources, func(out aptly.Progress, detail *task.Detail) (*task.ProcessReturnValue, error) {
var err error
collectionFactory := context.NewCollectionFactory()
// collect information about referenced packages...
existingPackageRefs := deb.NewPackageRefList()
out.Printf("Loading mirrors, local repos, snapshots and published repos...")
err = collectionFactory.RemoteRepoCollection().ForEach(func(repo *deb.RemoteRepo) error {
e := collectionFactory.RemoteRepoCollection().LoadComplete(repo)
if e != nil {
return e
}
if repo.RefList() != nil {
existingPackageRefs = existingPackageRefs.Merge(repo.RefList(), false, true)
}
return nil
})
if err != nil {
return nil, err
}
err = collectionFactory.LocalRepoCollection().ForEach(func(repo *deb.LocalRepo) error {
e := collectionFactory.LocalRepoCollection().LoadComplete(repo)
if e != nil {
return e
}
if repo.RefList() != nil {
existingPackageRefs = existingPackageRefs.Merge(repo.RefList(), false, true)
}
return nil
})
if err != nil {
return nil, err
}
err = collectionFactory.SnapshotCollection().ForEach(func(snapshot *deb.Snapshot) error {
e := collectionFactory.SnapshotCollection().LoadComplete(snapshot)
if e != nil {
return e
}
existingPackageRefs = existingPackageRefs.Merge(snapshot.RefList(), false, true)
return nil
})
if err != nil {
return nil, err
}
err = collectionFactory.PublishedRepoCollection().ForEach(func(published *deb.PublishedRepo) error {
if published.SourceKind != deb.SourceLocalRepo {
return nil
}
e := collectionFactory.PublishedRepoCollection().LoadComplete(published, collectionFactory)
if e != nil {
return e
}
for _, component := range published.Components() {
existingPackageRefs = existingPackageRefs.Merge(published.RefList(component), false, true)
}
return nil
})
if err != nil {
return nil, err
}
// ... and compare it to the list of all packages
out.Printf("Loading list of all packages...")
allPackageRefs := collectionFactory.PackageCollection().AllPackageRefs()
toDelete := allPackageRefs.Subtract(existingPackageRefs)
// delete packages that are no longer referenced
out.Printf("Deleting unreferenced packages (%d)...", toDelete.Len())
// database can't err as collection factory already constructed
db, _ := context.Database()
if toDelete.Len() > 0 {
batch := db.CreateBatch()
_ = toDelete.ForEach(func(ref []byte) error {
_ = collectionFactory.PackageCollection().DeleteByKey(ref, batch)
return nil
})
err = batch.Write()
if err != nil {
return nil, fmt.Errorf("unable to write to DB: %s", err)
}
}
// now, build a list of files that should be present in Repository (package pool)
out.Printf("Building list of files referenced by packages...")
referencedFiles := make([]string, 0, existingPackageRefs.Len())
err = existingPackageRefs.ForEach(func(key []byte) error {
pkg, err2 := collectionFactory.PackageCollection().ByKey(key)
if err2 != nil {
tail := ""
return fmt.Errorf("unable to load package %s: %s%s", string(key), err2, tail)
}
paths, err2 := pkg.FilepathList(context.PackagePool())
if err2 != nil {
return err2
}
referencedFiles = append(referencedFiles, paths...)
return nil
})
if err != nil {
return nil, err
}
sort.Strings(referencedFiles)
// build a list of files in the package pool
out.Printf("Building list of files in package pool...")
existingFiles, err := context.PackagePool().FilepathList(out)
if err != nil {
return nil, fmt.Errorf("unable to collect file paths: %s", err)
}
// find files which are in the pool but not referenced by packages
filesToDelete := utils.StrSlicesSubstract(existingFiles, referencedFiles)
// delete files that are no longer referenced
out.Printf("Deleting unreferenced files (%d)...", len(filesToDelete))
countFilesToDelete := len(filesToDelete)
taskDetail := struct {
TotalNumberOfPackagesToDelete int
RemainingNumberOfPackagesToDelete int
}{
countFilesToDelete, countFilesToDelete,
}
detail.Store(taskDetail)
if countFilesToDelete > 0 {
var size, totalSize int64
for _, file := range filesToDelete {
size, err = context.PackagePool().Remove(file)
if err != nil {
return nil, err
}
taskDetail.RemainingNumberOfPackagesToDelete--
detail.Store(taskDetail)
totalSize += size
}
out.Printf("Disk space freed: %s...", utils.HumanBytes(totalSize))
}
out.Printf("Compacting database...")
return nil, db.CompactDB()
})
}
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