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switch to multi collection, change readme

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This commit is contained in:
elee
2022-03-18 21:51:16 -05:00
parent 1cea6c73d3
commit 411c0df3fe
5 changed files with 217 additions and 170 deletions
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215
weed/filer/arangodb/arangodb_store.go
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@@ -4,7 +4,9 @@ import (
"context"
"crypto/tls"
"fmt"
"strconv"
"strings"
"sync"
"time"
"github.com/arangodb/go-driver"
@@ -19,11 +21,20 @@ func init() {
filer.Stores = append(filer.Stores, &ArangodbStore{})
}
var (
BUCKET_PREFIX = "/buckets"
DEFAULT_COLLECTION = "seaweed_no_bucket"
KVMETA_COLLECTION = "seaweed_kvmeta"
)
type ArangodbStore struct {
connect driver.Connection
client driver.Client
database driver.Database
collection driver.Collection
connect driver.Connection
client driver.Client
database driver.Database
kvCollection driver.Collection
buckets map[string]driver.Collection
mu sync.RWMutex
databaseName string
}
@@ -32,7 +43,6 @@ type Model struct {
Key string `json:"_key"`
Directory string `json:"directory,omitempty"`
Name string `json:"name,omitempty"`
Bucket string `json:"bucket,omitempty"`
Ttl string `json:"ttl,omitempty"`
//arangodb does not support binary blobs
@@ -46,6 +56,7 @@ func (store *ArangodbStore) GetName() string {
}
func (store *ArangodbStore) Initialize(configuration util.Configuration, prefix string) (err error) {
store.buckets = make(map[string]driver.Collection, 3)
store.databaseName = configuration.GetString(prefix + "db_name")
return store.connection(configuration.GetStringSlice(prefix+"servers"),
configuration.GetString(prefix+"user"),
@@ -85,49 +96,7 @@ func (store *ArangodbStore) connection(uris []string, user string, pass string,
if err != nil {
return err
}
coll_name := "files"
ok, err = store.database.CollectionExists(ctx, coll_name)
if err != nil {
return err
}
if ok {
store.collection, err = store.database.Collection(ctx, coll_name)
} else {
store.collection, err = store.database.CreateCollection(ctx, coll_name, &driver.CreateCollectionOptions{})
}
if err != nil {
return err
}
// ensure indices
if _, _, err = store.collection.EnsurePersistentIndex(ctx, []string{"directory", "name"},
&driver.EnsurePersistentIndexOptions{
Name: "directory_name_multi",
Unique: true,
}); err != nil {
return err
}
if _, _, err = store.collection.EnsurePersistentIndex(ctx, []string{"directory"},
&driver.EnsurePersistentIndexOptions{Name: "IDX_directory"}); err != nil {
return err
}
if _, _, err = store.collection.EnsureTTLIndex(ctx, "ttl", 1,
&driver.EnsureTTLIndexOptions{Name: "IDX_TTL"}); err != nil {
return err
}
if _, _, err = store.collection.EnsurePersistentIndex(ctx, []string{"name"}, &driver.EnsurePersistentIndexOptions{
Name: "IDX_name",
}); err != nil {
return err
}
if _, _, err = store.collection.EnsurePersistentIndex(ctx, []string{"bucket"}, &driver.EnsurePersistentIndexOptions{
Name: "IDX_bucket",
Sparse: true, //sparse index, to locate files of bucket
}); err != nil {
if store.kvCollection, err = store.ensureCollection(ctx, KVMETA_COLLECTION); err != nil {
return err
}
return err
@@ -140,8 +109,13 @@ const (
)
func (store *ArangodbStore) BeginTransaction(ctx context.Context) (context.Context, error) {
keys := make([]string, 0, len(store.buckets)+1)
for k := range store.buckets {
keys = append(keys, k)
}
keys = append(keys, store.kvCollection.Name())
txn, err := store.database.BeginTransaction(ctx, driver.TransactionCollections{
Exclusive: []string{"files"},
Exclusive: keys,
}, &driver.BeginTransactionOptions{})
if err != nil {
return nil, err
@@ -186,23 +160,27 @@ func (store *ArangodbStore) InsertEntry(ctx context.Context, entry *filer.Entry)
if len(entry.Chunks) > 50 {
meta = util.MaybeGzipData(meta)
}
bucket, _ := extractBucket(entry.FullPath)
model := &Model{
Key: hashString(string(entry.FullPath)),
Directory: dir,
Name: name,
Meta: bytesToArray(meta),
Bucket: bucket,
}
if entry.TtlSec > 0 {
model.Ttl = time.Now().Add(time.Second * time.Duration(entry.TtlSec)).Format(time.RFC3339)
} else {
model.Ttl = ""
}
_, err = store.collection.CreateDocument(ctx, model)
targetCollection, err := store.extractBucketCollection(ctx, entry.FullPath)
if err != nil {
return err
}
_, err = targetCollection.CreateDocument(ctx, model)
if driver.IsConflict(err) {
return store.UpdateEntry(ctx, entry)
}
if err != nil {
return fmt.Errorf("InsertEntry %s: %v", entry.FullPath, err)
}
@@ -211,21 +189,6 @@ func (store *ArangodbStore) InsertEntry(ctx context.Context, entry *filer.Entry)
}
func extractBucket(fullpath util.FullPath) (string, string) {
if !strings.HasPrefix(string(fullpath), "/buckets/") {
return "", string(fullpath)
}
bucketAndObjectKey := string(fullpath)[len("/buckets/"):]
t := strings.Index(bucketAndObjectKey, "/")
bucket := bucketAndObjectKey
shortPath := "/"
if t > 0 {
bucket = bucketAndObjectKey[:t]
shortPath = string(util.FullPath(bucketAndObjectKey[t:]))
}
return bucket, shortPath
}
func (store *ArangodbStore) UpdateEntry(ctx context.Context, entry *filer.Entry) (err error) {
dir, name := entry.FullPath.DirAndName()
meta, err := entry.EncodeAttributesAndChunks()
@@ -247,9 +210,11 @@ func (store *ArangodbStore) UpdateEntry(ctx context.Context, entry *filer.Entry)
} else {
model.Ttl = "none"
}
_, err = store.collection.UpdateDocument(ctx, model.Key, model)
targetCollection, err := store.extractBucketCollection(ctx, entry.FullPath)
if err != nil {
return err
}
_, err = targetCollection.UpdateDocument(ctx, model.Key, model)
if err != nil {
return fmt.Errorf("UpdateEntry %s: %v", entry.FullPath, err)
}
@@ -259,11 +224,15 @@ func (store *ArangodbStore) UpdateEntry(ctx context.Context, entry *filer.Entry)
func (store *ArangodbStore) FindEntry(ctx context.Context, fullpath util.FullPath) (entry *filer.Entry, err error) {
var data Model
_, err = store.collection.ReadDocument(ctx, hashString(string(fullpath)), &data)
if driver.IsNotFound(err) {
return nil, filer_pb.ErrNotFound
}
targetCollection, err := store.extractBucketCollection(ctx, fullpath)
if err != nil {
return nil, err
}
_, err = targetCollection.ReadDocument(ctx, hashString(string(fullpath)), &data)
if err != nil {
if driver.IsNotFound(err) {
return nil, filer_pb.ErrNotFound
}
glog.Errorf("find %s: %v", fullpath, err)
return nil, filer_pb.ErrNotFound
}
@@ -281,8 +250,12 @@ func (store *ArangodbStore) FindEntry(ctx context.Context, fullpath util.FullPat
return entry, nil
}
func (store *ArangodbStore) DeleteEntry(ctx context.Context, fullpath util.FullPath) error {
_, err := store.collection.RemoveDocument(ctx, hashString(string(fullpath)))
func (store *ArangodbStore) DeleteEntry(ctx context.Context, fullpath util.FullPath) (err error) {
targetCollection, err := store.extractBucketCollection(ctx, fullpath)
if err != nil {
return err
}
_, err = targetCollection.RemoveDocument(ctx, hashString(string(fullpath)))
if err != nil && !driver.IsNotFound(err) {
glog.Errorf("find %s: %v", fullpath, err)
return fmt.Errorf("delete %s : %v", fullpath, err)
@@ -290,14 +263,21 @@ func (store *ArangodbStore) DeleteEntry(ctx context.Context, fullpath util.FullP
return nil
}
func (store *ArangodbStore) DeleteFolderChildren(ctx context.Context, fullpath util.FullPath) error {
// this runs in log time
func (store *ArangodbStore) DeleteFolderChildren(ctx context.Context, fullpath util.FullPath) (err error) {
var query string
targetCollection, err := store.extractBucketCollection(ctx, fullpath)
if err != nil {
return err
}
query = query + fmt.Sprintf(`
for d in files
for d in %s
filter starts_with(d.directory, "%s/") || d.directory == "%s"
remove d._key in files`,
remove d._key in %s`,
targetCollection.Name(),
strings.Join(strings.Split(string(fullpath), "/"), ","),
string(fullpath),
targetCollection.Name(),
)
cur, err := store.database.Query(ctx, query, nil)
if err != nil {
@@ -307,26 +287,33 @@ func (store *ArangodbStore) DeleteFolderChildren(ctx context.Context, fullpath u
return nil
}
func (store *ArangodbStore) ListDirectoryEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int64, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
return store.ListDirectoryPrefixedEntries(ctx, dirPath, startFileName, includeStartFile, limit, "", eachEntryFunc)
}
func (store *ArangodbStore) ListDirectoryPrefixedEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int64, prefix string, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
// if no prefix, then dont use index
if prefix == "" {
return store.ListDirectoryEntries(ctx, dirPath, startFileName, includeStartFile, limit, eachEntryFunc)
targetCollection, err := store.extractBucketCollection(ctx, dirPath)
if err != nil {
return lastFileName, err
}
eq := ""
query := "for d in " + targetCollection.Name()
if includeStartFile {
eq = "filter d.name >= \"" + startFileName + "\""
query = query + " filter d.name >= \"" + startFileName + "\" "
} else {
eq = "filter d.name > \"" + startFileName + "\""
query = query + " filter d.name > \"" + startFileName + "\" "
}
query := fmt.Sprintf(`
for d in files
if prefix != "" {
query = query + fmt.Sprintf(`&& starts_with(d.name, "%s")`, prefix)
}
query = query + `
filter d.directory == @dir
filter starts_with(d.name, @prefix)
%s
sort d.name asc
limit %d
return d`, eq, limit)
cur, err := store.database.Query(ctx, query, map[string]interface{}{"dir": dirPath, "prefix": prefix})
`
if limit > 0 {
query = query + "limit " + strconv.Itoa(int(limit))
}
query = query + "\n return d"
cur, err := store.database.Query(ctx, query, map[string]interface{}{"dir": dirPath})
if err != nil {
return lastFileName, fmt.Errorf("failed to list directory entries: find error: %w", err)
}
@@ -356,49 +343,5 @@ return d`, eq, limit)
return lastFileName, err
}
func (store *ArangodbStore) ListDirectoryEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int64, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
eq := ""
if includeStartFile {
eq = "filter d.name >= \"" + startFileName + "\""
} else {
eq = "filter d.name > \"" + startFileName + "\""
}
query := fmt.Sprintf(`
for d in files
filter d.directory == "%s"
%s
sort d.name asc
limit %d
return d`, string(dirPath), eq, limit)
cur, err := store.database.Query(ctx, query, nil)
if err != nil {
return lastFileName, fmt.Errorf("failed to list directory entries: find error: %w", err)
}
defer cur.Close()
for cur.HasMore() {
var data Model
_, err = cur.ReadDocument(ctx, &data)
if err != nil {
break
}
entry := &filer.Entry{
FullPath: util.NewFullPath(string(dirPath), data.Name),
}
lastFileName = data.Name
converted := arrayToBytes(data.Meta)
if decodeErr := entry.DecodeAttributesAndChunks(util.MaybeDecompressData(converted)); decodeErr != nil {
err = decodeErr
glog.V(0).Infof("list %s : %v", entry.FullPath, err)
break
}
if !eachEntryFunc(entry) {
break
}
}
return lastFileName, err
}
func (store *ArangodbStore) Shutdown() {
}