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db_cleanup.go
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db_cleanup.go
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package cmd
import (
"fmt"
"github.com/smira/aptly/deb"
"github.com/smira/aptly/utils"
"github.com/smira/commander"
"sort"
)
// aptly db cleanup
func aptlyDbCleanup(cmd *commander.Command, args []string) error {
var err error
if len(args) != 0 {
cmd.Usage()
return commander.ErrCommandError
}
// collect information about references packages...
existingPackageRefs := deb.NewPackageRefList()
context.Progress().Printf("Loading mirrors, local repos, snapshots and published repos...\n")
err = context.CollectionFactory().RemoteRepoCollection().ForEach(func(repo *deb.RemoteRepo) error {
err := context.CollectionFactory().RemoteRepoCollection().LoadComplete(repo)
if err != nil {
return err
}
if repo.RefList() != nil {
existingPackageRefs = existingPackageRefs.Merge(repo.RefList(), false, true)
}
return nil
})
if err != nil {
return err
}
err = context.CollectionFactory().LocalRepoCollection().ForEach(func(repo *deb.LocalRepo) error {
err := context.CollectionFactory().LocalRepoCollection().LoadComplete(repo)
if err != nil {
return err
}
if repo.RefList() != nil {
existingPackageRefs = existingPackageRefs.Merge(repo.RefList(), false, true)
}
return nil
})
if err != nil {
return err
}
err = context.CollectionFactory().SnapshotCollection().ForEach(func(snapshot *deb.Snapshot) error {
err := context.CollectionFactory().SnapshotCollection().LoadComplete(snapshot)
if err != nil {
return err
}
existingPackageRefs = existingPackageRefs.Merge(snapshot.RefList(), false, true)
return nil
})
if err != nil {
return err
}
err = context.CollectionFactory().PublishedRepoCollection().ForEach(func(published *deb.PublishedRepo) error {
if published.SourceKind != "local" {
return nil
}
err := context.CollectionFactory().PublishedRepoCollection().LoadComplete(published, context.CollectionFactory())
if err != nil {
return err
}
for _, component := range published.Components() {
existingPackageRefs = existingPackageRefs.Merge(published.RefList(component), false, true)
}
return nil
})
if err != nil {
return err
}
// ... and compare it to the list of all packages
context.Progress().Printf("Loading list of all packages...\n")
allPackageRefs := context.CollectionFactory().PackageCollection().AllPackageRefs()
toDelete := allPackageRefs.Substract(existingPackageRefs)
// delete packages that are no longer referenced
context.Progress().Printf("Deleting unreferenced packages (%d)...\n", toDelete.Len())
// database can't err as collection factory already constructed
db, _ := context.Database()
db.StartBatch()
err = toDelete.ForEach(func(ref []byte) error {
return context.CollectionFactory().PackageCollection().DeleteByKey(ref)
})
if err != nil {
return err
}
err = db.FinishBatch()
if err != nil {
return fmt.Errorf("unable to write to DB: %s", err)
}
// now, build a list of files that should be present in Repository (package pool)
context.Progress().Printf("Building list of files referenced by packages...\n")
referencedFiles := make([]string, 0, existingPackageRefs.Len())
context.Progress().InitBar(int64(existingPackageRefs.Len()), false)
err = existingPackageRefs.ForEach(func(key []byte) error {
pkg, err2 := context.CollectionFactory().PackageCollection().ByKey(key)
if err2 != nil {
return err2
}
paths, err2 := pkg.FilepathList(context.PackagePool())
if err2 != nil {
return err2
}
referencedFiles = append(referencedFiles, paths...)
context.Progress().AddBar(1)
return nil
})
if err != nil {
return err
}
sort.Strings(referencedFiles)
context.Progress().ShutdownBar()
// build a list of files in the package pool
context.Progress().Printf("Building list of files in package pool...\n")
existingFiles, err := context.PackagePool().FilepathList(context.Progress())
if err != nil {
return 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
context.Progress().Printf("Deleting unreferenced files (%d)...\n", len(filesToDelete))
if len(filesToDelete) > 0 {
context.Progress().InitBar(int64(len(filesToDelete)), false)
var size, totalSize int64
for _, file := range filesToDelete {
size, err = context.PackagePool().Remove(file)
if err != nil {
return err
}
context.Progress().AddBar(1)
totalSize += size
}
context.Progress().ShutdownBar()
context.Progress().Printf("Disk space freed: %s...\n", utils.HumanBytes(totalSize))
}
context.Progress().Printf("Compacting database...\n")
err = db.CompactDB()
return err
}
func makeCmdDbCleanup() *commander.Command {
cmd := &commander.Command{
Run: aptlyDbCleanup,
UsageLine: "cleanup",
Short: "cleanup DB and package pool",
Long: `
Database cleanup removes information about unreferenced packages and removes
files in the package pool that aren't used by packages anymore
Example:
$ aptly db cleanup
`,
}
return cmd
}