mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
308 lines
9.1 KiB
Go
308 lines
9.1 KiB
Go
package elastic
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"math"
|
|
"strings"
|
|
|
|
"github.com/chrislusf/seaweedfs/weed/filer"
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
|
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
|
|
weed_util "github.com/chrislusf/seaweedfs/weed/util"
|
|
jsoniter "github.com/json-iterator/go"
|
|
elastic "github.com/olivere/elastic/v7"
|
|
)
|
|
|
|
var (
|
|
indexType = "_doc"
|
|
indexPrefix = ".seaweedfs_"
|
|
indexKV = ".seaweedfs_kv_entries"
|
|
kvMappings = ` {
|
|
"mappings": {
|
|
"enabled": false,
|
|
"properties": {
|
|
"Value":{
|
|
"type": "binary"
|
|
}
|
|
}
|
|
}
|
|
}`
|
|
)
|
|
|
|
type ESEntry struct {
|
|
ParentId string `json:"ParentId"`
|
|
Entry *filer.Entry
|
|
}
|
|
|
|
type ESKVEntry struct {
|
|
Value []byte `json:"Value"`
|
|
}
|
|
|
|
func init() {
|
|
filer.Stores = append(filer.Stores, &ElasticStore{})
|
|
}
|
|
|
|
type ElasticStore struct {
|
|
client *elastic.Client
|
|
maxPageSize int
|
|
}
|
|
|
|
func (store *ElasticStore) GetName() string {
|
|
return "elastic7"
|
|
}
|
|
|
|
func (store *ElasticStore) Initialize(configuration weed_util.Configuration, prefix string) (err error) {
|
|
options := []elastic.ClientOptionFunc{}
|
|
servers := configuration.GetStringSlice(prefix + "servers")
|
|
options = append(options, elastic.SetURL(servers...))
|
|
username := configuration.GetString(prefix + "username")
|
|
password := configuration.GetString(prefix + "password")
|
|
if username != "" && password != "" {
|
|
options = append(options, elastic.SetBasicAuth(username, password))
|
|
}
|
|
options = append(options, elastic.SetSniff(configuration.GetBool(prefix+"sniff_enabled")))
|
|
options = append(options, elastic.SetHealthcheck(configuration.GetBool(prefix+"healthcheck_enabled")))
|
|
store.maxPageSize = configuration.GetInt(prefix + "index.max_result_window")
|
|
if store.maxPageSize <= 0 {
|
|
store.maxPageSize = 10000
|
|
}
|
|
glog.Infof("filer store elastic endpoints: %v.", servers)
|
|
return store.initialize(options)
|
|
}
|
|
|
|
func (store *ElasticStore) initialize(options []elastic.ClientOptionFunc) (err error) {
|
|
ctx := context.Background()
|
|
store.client, err = elastic.NewClient(options...)
|
|
if err != nil {
|
|
return fmt.Errorf("init elastic %v.", err)
|
|
}
|
|
if ok, err := store.client.IndexExists(indexKV).Do(ctx); err == nil && !ok {
|
|
_, err = store.client.CreateIndex(indexKV).Body(kvMappings).Do(ctx)
|
|
if err != nil {
|
|
return fmt.Errorf("create index(%s) %v.", indexKV, err)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (store *ElasticStore) BeginTransaction(ctx context.Context) (context.Context, error) {
|
|
return ctx, nil
|
|
}
|
|
func (store *ElasticStore) CommitTransaction(ctx context.Context) error {
|
|
return nil
|
|
}
|
|
func (store *ElasticStore) RollbackTransaction(ctx context.Context) error {
|
|
return nil
|
|
}
|
|
|
|
func (store *ElasticStore) ListDirectoryPrefixedEntries(ctx context.Context, dirPath weed_util.FullPath, startFileName string, includeStartFile bool, limit int64, prefix string, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
|
|
return lastFileName, filer.ErrUnsupportedListDirectoryPrefixed
|
|
}
|
|
|
|
func (store *ElasticStore) InsertEntry(ctx context.Context, entry *filer.Entry) (err error) {
|
|
index := getIndex(entry.FullPath, false)
|
|
dir, _ := entry.FullPath.DirAndName()
|
|
id := weed_util.Md5String([]byte(entry.FullPath))
|
|
esEntry := &ESEntry{
|
|
ParentId: weed_util.Md5String([]byte(dir)),
|
|
Entry: entry,
|
|
}
|
|
value, err := jsoniter.Marshal(esEntry)
|
|
if err != nil {
|
|
glog.Errorf("insert entry(%s) %v.", string(entry.FullPath), err)
|
|
return fmt.Errorf("insert entry %v.", err)
|
|
}
|
|
_, err = store.client.Index().
|
|
Index(index).
|
|
Type(indexType).
|
|
Id(id).
|
|
BodyJson(string(value)).
|
|
Do(ctx)
|
|
if err != nil {
|
|
glog.Errorf("insert entry(%s) %v.", string(entry.FullPath), err)
|
|
return fmt.Errorf("insert entry %v.", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (store *ElasticStore) UpdateEntry(ctx context.Context, entry *filer.Entry) (err error) {
|
|
return store.InsertEntry(ctx, entry)
|
|
}
|
|
|
|
func (store *ElasticStore) FindEntry(ctx context.Context, fullpath weed_util.FullPath) (entry *filer.Entry, err error) {
|
|
index := getIndex(fullpath, false)
|
|
id := weed_util.Md5String([]byte(fullpath))
|
|
searchResult, err := store.client.Get().
|
|
Index(index).
|
|
Type(indexType).
|
|
Id(id).
|
|
Do(ctx)
|
|
if elastic.IsNotFound(err) {
|
|
return nil, filer_pb.ErrNotFound
|
|
}
|
|
if searchResult != nil && searchResult.Found {
|
|
esEntry := &ESEntry{
|
|
ParentId: "",
|
|
Entry: &filer.Entry{},
|
|
}
|
|
err := jsoniter.Unmarshal(searchResult.Source, esEntry)
|
|
return esEntry.Entry, err
|
|
}
|
|
glog.Errorf("find entry(%s),%v.", string(fullpath), err)
|
|
return nil, filer_pb.ErrNotFound
|
|
}
|
|
|
|
func (store *ElasticStore) DeleteEntry(ctx context.Context, fullpath weed_util.FullPath) (err error) {
|
|
index := getIndex(fullpath, false)
|
|
id := weed_util.Md5String([]byte(fullpath))
|
|
if strings.Count(string(fullpath), "/") == 1 {
|
|
return store.deleteIndex(ctx, index)
|
|
}
|
|
return store.deleteEntry(ctx, index, id)
|
|
}
|
|
|
|
func (store *ElasticStore) deleteIndex(ctx context.Context, index string) (err error) {
|
|
deleteResult, err := store.client.DeleteIndex(index).Do(ctx)
|
|
if elastic.IsNotFound(err) || (err == nil && deleteResult.Acknowledged) {
|
|
return nil
|
|
}
|
|
glog.Errorf("delete index(%s) %v.", index, err)
|
|
return err
|
|
}
|
|
|
|
func (store *ElasticStore) deleteEntry(ctx context.Context, index, id string) (err error) {
|
|
deleteResult, err := store.client.Delete().
|
|
Index(index).
|
|
Type(indexType).
|
|
Id(id).
|
|
Do(ctx)
|
|
if err == nil {
|
|
if deleteResult.Result == "deleted" || deleteResult.Result == "not_found" {
|
|
return nil
|
|
}
|
|
}
|
|
glog.Errorf("delete entry(index:%s,_id:%s) %v.", index, id, err)
|
|
return fmt.Errorf("delete entry %v.", err)
|
|
}
|
|
|
|
func (store *ElasticStore) DeleteFolderChildren(ctx context.Context, fullpath weed_util.FullPath, limit int64) (err error) {
|
|
_, err = store.ListDirectoryEntries(ctx, fullpath, "", false, math.MaxInt32, func(entry *filer.Entry) bool {
|
|
if err := store.DeleteEntry(ctx, entry.FullPath); err != nil {
|
|
glog.Errorf("elastic delete %s: %v.", entry.FullPath, err)
|
|
return false
|
|
}
|
|
return true
|
|
})
|
|
return
|
|
}
|
|
|
|
func (store *ElasticStore) ListDirectoryEntries(ctx context.Context, dirPath weed_util.FullPath, startFileName string, includeStartFile bool, limit int64, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
|
|
return store.listDirectoryEntries(ctx, dirPath, startFileName, includeStartFile, limit, eachEntryFunc)
|
|
}
|
|
|
|
func (store *ElasticStore) listDirectoryEntries(
|
|
ctx context.Context, fullpath weed_util.FullPath, startFileName string, inclusive bool, limit int64, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
|
|
first := true
|
|
index := getIndex(fullpath, true)
|
|
nextStart := ""
|
|
parentId := weed_util.Md5String([]byte(fullpath))
|
|
if _, err = store.client.Refresh(index).Do(ctx); err != nil {
|
|
if elastic.IsNotFound(err) {
|
|
store.client.CreateIndex(index).Do(ctx)
|
|
return
|
|
}
|
|
}
|
|
for {
|
|
result := &elastic.SearchResult{}
|
|
if (startFileName == "" && first) || inclusive {
|
|
if result, err = store.search(ctx, index, parentId); err != nil {
|
|
glog.Errorf("search (%s,%s,%t,%d) %v.", string(fullpath), startFileName, inclusive, limit, err)
|
|
return
|
|
}
|
|
} else {
|
|
fullPath := string(fullpath) + "/" + startFileName
|
|
if !first {
|
|
fullPath = nextStart
|
|
}
|
|
after := weed_util.Md5String([]byte(fullPath))
|
|
if result, err = store.searchAfter(ctx, index, parentId, after); err != nil {
|
|
glog.Errorf("searchAfter (%s,%s,%t,%d) %v.", string(fullpath), startFileName, inclusive, limit, err)
|
|
return
|
|
}
|
|
}
|
|
first = false
|
|
for _, hit := range result.Hits.Hits {
|
|
esEntry := &ESEntry{
|
|
ParentId: "",
|
|
Entry: &filer.Entry{},
|
|
}
|
|
if err := jsoniter.Unmarshal(hit.Source, esEntry); err == nil {
|
|
limit--
|
|
if limit < 0 {
|
|
return lastFileName, nil
|
|
}
|
|
nextStart = string(esEntry.Entry.FullPath)
|
|
fileName := esEntry.Entry.FullPath.Name()
|
|
if fileName == startFileName && !inclusive {
|
|
continue
|
|
}
|
|
if !eachEntryFunc(esEntry.Entry) {
|
|
break
|
|
}
|
|
lastFileName = fileName
|
|
}
|
|
}
|
|
if len(result.Hits.Hits) < store.maxPageSize {
|
|
break
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func (store *ElasticStore) search(ctx context.Context, index, parentId string) (result *elastic.SearchResult, err error) {
|
|
if count, err := store.client.Count(index).Do(ctx); err == nil && count == 0 {
|
|
return &elastic.SearchResult{
|
|
Hits: &elastic.SearchHits{
|
|
Hits: make([]*elastic.SearchHit, 0)},
|
|
}, nil
|
|
}
|
|
queryResult, err := store.client.Search().
|
|
Index(index).
|
|
Query(elastic.NewMatchQuery("ParentId", parentId)).
|
|
Size(store.maxPageSize).
|
|
Sort("_id", false).
|
|
Do(ctx)
|
|
return queryResult, err
|
|
}
|
|
|
|
func (store *ElasticStore) searchAfter(ctx context.Context, index, parentId, after string) (result *elastic.SearchResult, err error) {
|
|
queryResult, err := store.client.Search().
|
|
Index(index).
|
|
Query(elastic.NewMatchQuery("ParentId", parentId)).
|
|
SearchAfter(after).
|
|
Size(store.maxPageSize).
|
|
Sort("_id", false).
|
|
Do(ctx)
|
|
return queryResult, err
|
|
|
|
}
|
|
|
|
func (store *ElasticStore) Shutdown() {
|
|
store.client.Stop()
|
|
}
|
|
|
|
func getIndex(fullpath weed_util.FullPath, isDirectory bool) string {
|
|
path := strings.Split(string(fullpath), "/")
|
|
if isDirectory && len(path) >= 2 {
|
|
return indexPrefix + strings.ToLower(path[1])
|
|
}
|
|
if len(path) > 2 {
|
|
return indexPrefix + strings.ToLower(path[1])
|
|
}
|
|
if len(path) == 2 {
|
|
return indexPrefix
|
|
}
|
|
return ""
|
|
}
|