CORE-640: Parallelize restore command

This commit is contained in:
Ben Johnson 2021-06-18 16:03:09 -06:00
parent e082f6bce0
commit dad2372a8c
2 changed files with 174 additions and 110 deletions

View file

@ -37,6 +37,7 @@ The Restore command will take a backup archive and restore it to a new, clean cl
flags := restoreCmd.Flags()
flags.StringVarP(&cmd.Path, "source", "s", "", "pilosa backup file; specify '-' to restore from stdin tar stream")
flags.StringVar(&cmd.Host, "host", "localhost:10101", "host:port of Pilosa.")
flags.IntVar(&cmd.Concurrency, "concurrency", 1, "number of concurrent uploads")
ctl.SetTLSConfig(
flags, "",
&cmd.TLS.CertificatePath,

View file

@ -37,6 +37,8 @@ type RestoreCommand struct {
tlsConfig *tls.Config
Host string
Concurrency int
// Filepath to the backup file.
Path string
// Reusable client.
@ -50,7 +52,8 @@ type RestoreCommand struct {
// NewRestoreCommand returns a new instance of RestoreCommand.
func NewRestoreCommand(stdin io.Reader, stdout, stderr io.Writer) *RestoreCommand {
return &RestoreCommand{
CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
Concurrency: 1,
}
}
@ -61,6 +64,8 @@ func (cmd *RestoreCommand) Run(ctx context.Context) (err error) {
// Validate arguments.
if cmd.Path == "" {
return fmt.Errorf("-s flag required")
} else if cmd.Concurrency <= 0 {
return fmt.Errorf("concurrency must be at least one")
}
// Parse TLS configuration for node-specific clients.
@ -152,156 +157,214 @@ func (cmd *RestoreCommand) restoreIDAlloc(ctx context.Context, primary *topology
}
func (cmd *RestoreCommand) restoreShards(ctx context.Context) error {
logger := cmd.Logger()
filenames, err := filepath.Glob(filepath.Join(cmd.Path, "indexes", "*", "shards", "*"))
if err != nil {
return err
}
ch := make(chan string, len(filenames))
for _, filename := range filenames {
rel, err := filepath.Rel(cmd.Path, filename)
if err != nil {
return err
}
ch <- filename
}
close(ch)
record := strings.Split(rel, string(os.PathSeparator))
indexName := record[1]
shard, err := strconv.ParseUint(record[3], 10, 64)
if err != nil {
continue
}
nodes, err := cmd.client.FragmentNodes(ctx, indexName, shard)
if err != nil {
return fmt.Errorf("cannot determine fragment nodes: %w", err)
} else if len(nodes) == 0 {
return fmt.Errorf("no nodes available")
}
g, ctx := errgroup.WithContext(ctx)
for _, node := range nodes {
node := node
g.Go(func() error {
logger.Printf("shard %v %v", shard, indexName)
f, err := os.Open(filename)
if err != nil {
return err
g, ctx := errgroup.WithContext(ctx)
for i := 0; i < cmd.Concurrency; i++ {
g.Go(func() error {
for {
select {
case <-ctx.Done():
return ctx.Err()
case filename, ok := <-ch:
if !ok {
return nil
} else if err := cmd.restoreShard(ctx, filename); err != nil {
return err
}
}
defer f.Close()
}
})
}
return g.Wait()
}
url := node.URI.Path(fmt.Sprintf("/internal/restore/%v/%v", indexName, shard))
req, err := http.NewRequest("POST", url, f)
if err != nil {
return err
}
req = req.WithContext(ctx)
req.Header.Set("Content-Type", "application/octet-stream")
func (cmd *RestoreCommand) restoreShard(ctx context.Context, filename string) error {
logger := cmd.Logger()
var client http.Client
resp, err := client.Do(req)
if err != nil {
return err
} else if err := resp.Body.Close(); err != nil {
return err
} else if resp.StatusCode != http.StatusOK {
return fmt.Errorf("unexpected status code: %d", resp.StatusCode)
}
return nil
})
}
if err := g.Wait(); err != nil {
return err
}
rel, err := filepath.Rel(cmd.Path, filename)
if err != nil {
return err
}
// Parse filename.
record := strings.Split(rel, string(os.PathSeparator))
indexName := record[1]
shard, err := strconv.ParseUint(record[3], 10, 64)
if err != nil {
return nil // not a shard file
}
nodes, err := cmd.client.FragmentNodes(ctx, indexName, shard)
if err != nil {
return fmt.Errorf("cannot determine fragment nodes: %w", err)
} else if len(nodes) == 0 {
return fmt.Errorf("no nodes available")
}
for _, node := range nodes {
logger.Printf("shard %v %v", shard, indexName)
f, err := os.Open(filename)
if err != nil {
return err
}
defer f.Close()
url := node.URI.Path(fmt.Sprintf("/internal/restore/%v/%v", indexName, shard))
req, err := http.NewRequest("POST", url, f)
if err != nil {
return err
}
req = req.WithContext(ctx)
req.Header.Set("Content-Type", "application/octet-stream")
var client http.Client
resp, err := client.Do(req)
if err != nil {
return err
} else if err := resp.Body.Close(); err != nil {
return err
} else if resp.StatusCode != http.StatusOK {
return fmt.Errorf("unexpected status code: %d", resp.StatusCode)
}
}
return nil
}
func (cmd *RestoreCommand) restoreIndexTranslation(ctx context.Context) error {
logger := cmd.Logger()
filenames, err := filepath.Glob(filepath.Join(cmd.Path, "indexes", "*", "translate", "*"))
if err != nil {
return err
}
ch := make(chan string, len(filenames))
for _, filename := range filenames {
rel, err := filepath.Rel(cmd.Path, filename)
if err != nil {
return err
}
ch <- filename
}
close(ch)
record := strings.Split(rel, string(os.PathSeparator))
indexName := record[1]
partitionID, err := strconv.Atoi(record[3])
if err != nil {
return err
}
logger.Printf("column keys %v (%v)", indexName, partitionID)
nodes, err := cmd.client.PartitionNodes(ctx, partitionID)
if err != nil {
return err
}
g, ctx := errgroup.WithContext(ctx)
for _, node := range nodes {
node := node
g.Go(func() error {
f, err := os.Open(filename)
if err != nil {
return err
g, ctx := errgroup.WithContext(ctx)
for i := 0; i < cmd.Concurrency; i++ {
g.Go(func() error {
for {
select {
case <-ctx.Done():
return ctx.Err()
case filename, ok := <-ch:
if !ok {
return nil
} else if err := cmd.restoreIndexTranslationFile(ctx, filename); err != nil {
return err
}
}
defer f.Close()
}
})
}
return g.Wait()
}
return cmd.client.ImportIndexKeys(ctx, &node.URI, indexName, partitionID, false, f)
})
}
if err := g.Wait(); err != nil {
func (cmd *RestoreCommand) restoreIndexTranslationFile(ctx context.Context, filename string) error {
logger := cmd.Logger()
rel, err := filepath.Rel(cmd.Path, filename)
if err != nil {
return err
}
record := strings.Split(rel, string(os.PathSeparator))
indexName := record[1]
partitionID, err := strconv.Atoi(record[3])
if err != nil {
return err
}
logger.Printf("column keys %v (%v)", indexName, partitionID)
nodes, err := cmd.client.PartitionNodes(ctx, partitionID)
if err != nil {
return err
}
for _, node := range nodes {
if err := func() error {
f, err := os.Open(filename)
if err != nil {
return err
}
defer f.Close()
return cmd.client.ImportIndexKeys(ctx, &node.URI, indexName, partitionID, false, f)
}(); err != nil {
return err
}
}
return nil
}
func (cmd *RestoreCommand) restoreFieldTranslation(ctx context.Context, nodes []*topology.Node) error {
logger := cmd.Logger()
filenames, err := filepath.Glob(filepath.Join(cmd.Path, "indexes", "*", "fields", "*", "translate"))
if err != nil {
return err
}
ch := make(chan string, len(filenames))
for _, filename := range filenames {
rel, err := filepath.Rel(cmd.Path, filename)
if err != nil {
return err
}
ch <- filename
}
close(ch)
record := strings.Split(rel, string(os.PathSeparator))
indexName, fieldName := record[1], record[3]
logger.Printf("field keys %v %v", indexName, fieldName)
g, ctx := errgroup.WithContext(ctx)
for _, node := range nodes {
node := node
g.Go(func() error {
f, err := os.Open(filename)
if err != nil {
return err
g, ctx := errgroup.WithContext(ctx)
for i := 0; i < cmd.Concurrency; i++ {
g.Go(func() error {
for {
select {
case <-ctx.Done():
return ctx.Err()
case filename, ok := <-ch:
if !ok {
return nil
} else if err := cmd.restoreFieldTranslationFile(ctx, nodes, filename); err != nil {
return err
}
}
defer f.Close()
}
})
}
return g.Wait()
}
return cmd.client.ImportFieldKeys(ctx, &node.URI, indexName, fieldName, false, f)
})
}
if err := g.Wait(); err != nil {
func (cmd *RestoreCommand) restoreFieldTranslationFile(ctx context.Context, nodes []*topology.Node, filename string) error {
logger := cmd.Logger()
rel, err := filepath.Rel(cmd.Path, filename)
if err != nil {
return err
}
record := strings.Split(rel, string(os.PathSeparator))
indexName, fieldName := record[1], record[3]
logger.Printf("field keys %v %v", indexName, fieldName)
for _, node := range nodes {
if func() error {
f, err := os.Open(filename)
if err != nil {
return err
}
defer f.Close()
return cmd.client.ImportFieldKeys(ctx, &node.URI, indexName, fieldName, false, f)
}(); err != nil {
return err
}
}