snapshot: Separate into whitebox and blackbox backup
This commit is contained in:
Tom Wiesing
parent
ac43221932
commit
f674e50e10
2 changed files with 126 additions and 85 deletions
161
internal/env/snapshot.go
vendored
161
internal/env/snapshot.go
vendored
|
|
@ -8,13 +8,13 @@ import (
|
|||
"os"
|
||||
"path/filepath"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/FAU-CDI/wisski-distillery/pkg/bookkeeping"
|
||||
"github.com/FAU-CDI/wisski-distillery/pkg/countwriter"
|
||||
"github.com/FAU-CDI/wisski-distillery/pkg/fsx"
|
||||
"github.com/FAU-CDI/wisski-distillery/pkg/logging"
|
||||
"github.com/FAU-CDI/wisski-distillery/pkg/opgroup"
|
||||
"github.com/FAU-CDI/wisski-distillery/pkg/password"
|
||||
"github.com/tkw1536/goprogram/stream"
|
||||
"golang.org/x/exp/slices"
|
||||
|
|
@ -174,133 +174,127 @@ func (instance Instance) Snapshot(io stream.IOStream, desc SnapshotDescription)
|
|||
// do the create keeping track of time!
|
||||
logging.LogOperation(func() error {
|
||||
snapshot.StartTime = time.Now()
|
||||
snapshot.makeBlackbox(io, instance)
|
||||
snapshot.EndTime = time.Now()
|
||||
|
||||
snapshot.makeBlackbox(io, instance)
|
||||
snapshot.makeWhitebox(io, instance)
|
||||
|
||||
snapshot.EndTime = time.Now()
|
||||
return nil
|
||||
}, io, "Writing snapshot files")
|
||||
|
||||
slices.Sort(snapshot.Manifest)
|
||||
return
|
||||
}
|
||||
|
||||
// mainBlackbox runs the blackbox backup of the system.
|
||||
// makeBlackbox runs the blackbox backup of the system.
|
||||
// It pauses the Instance, if a consistent state is required.
|
||||
func (snapshot *Snapshot) makeBlackbox(io stream.IOStream, instance Instance) {
|
||||
stack := instance.Stack()
|
||||
|
||||
og := opgroup.NewOpGroup[string](4)
|
||||
|
||||
// stop the instance (unless it was explicitly asked to not do so!)
|
||||
if !snapshot.Description.Keepalive {
|
||||
logging.LogMessage(io, "Stopping instance")
|
||||
snapshot.ErrStop = stack.Down(io)
|
||||
|
||||
defer func() {
|
||||
logging.LogMessage(io, "Starting instance")
|
||||
snapshot.ErrStart = stack.Up(io)
|
||||
}()
|
||||
}
|
||||
|
||||
// create a wait group, and message channel
|
||||
wg := &sync.WaitGroup{}
|
||||
files := make(chan string, 4)
|
||||
|
||||
// write bookkeeping information
|
||||
wg.Add(1)
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
|
||||
og.GoErr(func(files chan<- string) error {
|
||||
bkPath := filepath.Join(snapshot.Description.Dest, "bookkeeping.txt")
|
||||
files <- bkPath
|
||||
|
||||
info, err := os.Create(bkPath)
|
||||
if err != nil {
|
||||
snapshot.ErrBookkeep = err
|
||||
return
|
||||
return err
|
||||
}
|
||||
defer info.Close()
|
||||
|
||||
// print whatever is in the database
|
||||
// TODO: This should be sql code, maybe gorm can do that?
|
||||
_, snapshot.ErrBookkeep = fmt.Fprintf(info, "%#v\n", instance.Instance)
|
||||
}()
|
||||
_, err = fmt.Fprintf(info, "%#v\n", instance.Instance)
|
||||
return err
|
||||
}, &snapshot.ErrBookkeep)
|
||||
|
||||
// backup the filesystem
|
||||
og.GoErr(func(files chan<- string) error {
|
||||
fsPath := filepath.Join(snapshot.Description.Dest, filepath.Base(instance.FilesystemBase))
|
||||
|
||||
// copy over whatever is in the base directory
|
||||
return fsx.CopyDirectory(fsPath, instance.FilesystemBase, func(dst, src string) {
|
||||
files <- dst
|
||||
})
|
||||
}, &snapshot.ErrFilesystem)
|
||||
|
||||
// backup the graph db repository
|
||||
og.GoErr(func(files chan<- string) error {
|
||||
tsPath := filepath.Join(snapshot.Description.Dest, instance.GraphDBRepository+".nq")
|
||||
files <- tsPath
|
||||
|
||||
nquads, err := os.Create(tsPath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer nquads.Close()
|
||||
|
||||
// directly store the result
|
||||
_, err = instance.dis.Triplestore().Backup(nquads, instance.GraphDBRepository)
|
||||
return err
|
||||
}, &snapshot.ErrTriplestore)
|
||||
|
||||
// backup the sql database
|
||||
og.GoErr(func(files chan<- string) error {
|
||||
sqlPath := filepath.Join(snapshot.Description.Dest, snapshot.Instance.SqlDatabase+".sql")
|
||||
files <- sqlPath
|
||||
|
||||
sql, err := os.Create(sqlPath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer sql.Close()
|
||||
|
||||
// directly store the result
|
||||
return instance.dis.SQL().Backup(io, sql, instance.SqlDatabase)
|
||||
}, &snapshot.ErrSQL)
|
||||
|
||||
// wait for the group!
|
||||
snapshot.waitGroup(io, og)
|
||||
}
|
||||
|
||||
// makeWhitebox runs the whitebox backup of the system.
|
||||
// The instance should be running during this step.
|
||||
func (snapshot *Snapshot) makeWhitebox(io stream.IOStream, instance Instance) {
|
||||
og := opgroup.NewOpGroup[string](1)
|
||||
|
||||
// write pathbuilders
|
||||
// TODO: Move this outside of the up/down stuff!
|
||||
wg.Add(1)
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
og.GoErr(func(files chan<- string) error {
|
||||
|
||||
pbPath := filepath.Join(snapshot.Description.Dest, "pathbuilders")
|
||||
files <- pbPath
|
||||
|
||||
// create the directory!
|
||||
if err := os.Mkdir(pbPath, fs.ModeDir); err != nil {
|
||||
snapshot.ErrPathbuilder = err
|
||||
return
|
||||
return err
|
||||
}
|
||||
|
||||
// put in all the pathbuilders
|
||||
snapshot.ErrPathbuilder = instance.ExportPathbuilders(pbPath)
|
||||
}()
|
||||
return instance.ExportPathbuilders(pbPath)
|
||||
}, &snapshot.ErrPathbuilder)
|
||||
|
||||
// backup the filesystem
|
||||
wg.Add(1)
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
// wait for the group!
|
||||
snapshot.waitGroup(io, og)
|
||||
}
|
||||
|
||||
fsPath := filepath.Join(snapshot.Description.Dest, filepath.Base(instance.FilesystemBase))
|
||||
|
||||
// copy over whatever is in the base directory
|
||||
snapshot.ErrFilesystem = fsx.CopyDirectory(fsPath, instance.FilesystemBase, func(dst, src string) {
|
||||
files <- dst
|
||||
})
|
||||
}()
|
||||
|
||||
// backup the graph db repository
|
||||
wg.Add(1)
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
|
||||
tsPath := filepath.Join(snapshot.Description.Dest, instance.GraphDBRepository+".nq")
|
||||
files <- tsPath
|
||||
|
||||
nquads, err := os.Create(tsPath)
|
||||
if err != nil {
|
||||
snapshot.ErrTriplestore = err
|
||||
return
|
||||
}
|
||||
defer nquads.Close()
|
||||
|
||||
// directly store the result
|
||||
_, snapshot.ErrTriplestore = instance.dis.Triplestore().Backup(nquads, instance.GraphDBRepository)
|
||||
}()
|
||||
|
||||
// backup the sql database
|
||||
wg.Add(1)
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
|
||||
sqlPath := filepath.Join(snapshot.Description.Dest, snapshot.Instance.SqlDatabase+".sql")
|
||||
files <- sqlPath
|
||||
|
||||
sql, err := os.Create(sqlPath)
|
||||
if err != nil {
|
||||
snapshot.ErrSQL = err
|
||||
return
|
||||
}
|
||||
defer sql.Close()
|
||||
|
||||
// directly store the result
|
||||
snapshot.ErrSQL = instance.dis.SQL().Backup(io, sql, instance.SqlDatabase)
|
||||
}()
|
||||
|
||||
// TODO: Backup the docker image
|
||||
|
||||
// wait for the group, then close the message channel.
|
||||
go func() {
|
||||
wg.Wait()
|
||||
close(files)
|
||||
}()
|
||||
|
||||
for file := range files {
|
||||
// waitGroup waits for the
|
||||
func (snapshot *Snapshot) waitGroup(io stream.IOStream, og *opgroup.OpGroup[string]) {
|
||||
// wait for the messages to return
|
||||
for file := range og.Wait() {
|
||||
// get the relative path to the root of the manifest.
|
||||
// nothing *should* go wrong, but in case it does, use the original path.
|
||||
path, err := filepath.Rel(snapshot.Description.Dest, file)
|
||||
|
|
@ -314,9 +308,6 @@ func (snapshot *Snapshot) makeBlackbox(io stream.IOStream, instance Instance) {
|
|||
snapshot.Manifest = append(snapshot.Manifest, path)
|
||||
}
|
||||
io.Println("")
|
||||
|
||||
// make sure the manifest is sorted!
|
||||
slices.Sort(snapshot.Manifest)
|
||||
}
|
||||
|
||||
// WriteReport writes out the report belonging to this snapshot.
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue