From 3c70163798a88580988169058ff528eeea95023b Mon Sep 17 00:00:00 2001
From: bukton <buk_ton2@hotmail.com>
Date: Sat, 18 Apr 2020 23:48:38 +0700
Subject: [PATCH] filer mongodb insert entry and find entry

---
 go.mod                               |  2 +-
 weed/filer2/mongodb/mongodb_store.go | 59 ++++++++++++++++++++++++++--
 2 files changed, 57 insertions(+), 4 deletions(-)

diff --git a/go.mod b/go.mod
index f12b58d21..2efbec9e5 100644
--- a/go.mod
+++ b/go.mod
@@ -75,7 +75,7 @@ require (
 	github.com/wsxiaoys/terminal v0.0.0-20160513160801-0940f3fc43a0 // indirect
 	go.etcd.io/bbolt v1.3.3 // indirect
 	go.etcd.io/etcd v3.3.15+incompatible
-	go.mongodb.org/mongo-driver v1.3.2 // indirect
+	go.mongodb.org/mongo-driver v1.3.2
 	go.uber.org/multierr v1.2.0 // indirect
 	gocloud.dev v0.16.0
 	gocloud.dev/pubsub/natspubsub v0.16.0
diff --git a/weed/filer2/mongodb/mongodb_store.go b/weed/filer2/mongodb/mongodb_store.go
index 75df85172..ae76c0bf1 100644
--- a/weed/filer2/mongodb/mongodb_store.go
+++ b/weed/filer2/mongodb/mongodb_store.go
@@ -2,8 +2,11 @@ package mongodb
 
 import (
 	"context"
+	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/util"
+	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/mongo"
 	"go.mongodb.org/mongo-driver/mongo/options"
 	"time"
@@ -14,7 +17,15 @@ func init() {
 }
 
 type MongodbStore struct {
-	connect *mongo.Client
+	connect        *mongo.Client
+	database       string
+	collectionName string
+}
+
+type Model struct {
+	Directory string `bson:"directory"`
+	Name      string `bson:"name"`
+	Meta      []byte `bson:"meta"`
 }
 
 func (store *MongodbStore) GetName() string {
@@ -22,6 +33,8 @@ func (store *MongodbStore) GetName() string {
 }
 
 func (store *MongodbStore) Initialize(configuration util.Configuration, prefix string) (err error) {
+	store.database = configuration.GetString(prefix + "database")
+	store.collectionName = "filemeta"
 	return store.connection(configuration.GetString(prefix + "uri"))
 }
 
@@ -45,15 +58,55 @@ func (store *MongodbStore) RollbackTransaction(ctx context.Context) error {
 }
 
 func (store *MongodbStore) InsertEntry(ctx context.Context, entry *filer2.Entry) (err error) {
+
+	dir, name := entry.FullPath.DirAndName()
+	meta, err := entry.EncodeAttributesAndChunks()
+	if err != nil {
+		return fmt.Errorf("encode %s: %s", entry.FullPath, err)
+	}
+
+	c := store.connect.Database(store.database).Collection(store.collectionName)
+
+	_, err = c.InsertOne(ctx, Model{
+		Directory: dir,
+		Name:      name,
+		Meta:      meta,
+	})
+
+	fmt.Println(err)
+
 	return nil
 }
 
 func (store *MongodbStore) UpdateEntry(ctx context.Context, entry *filer2.Entry) (err error) {
-	return nil
+	return store.UpdateEntry(ctx, entry)
 }
 
 func (store *MongodbStore) FindEntry(ctx context.Context, fullpath util.FullPath) (entry *filer2.Entry, err error) {
-	return nil, nil
+
+	dir, name := fullpath.DirAndName()
+	var data Model
+
+	var where = bson.M{ "directory": dir, "name": name }
+	err = store.connect.Database(store.database).Collection(store.collectionName).FindOne(ctx, where).Decode(&data)
+	if err != mongo.ErrNoDocuments && err != nil {
+		return nil, filer_pb.ErrNotFound
+	}
+
+	if len(data.Meta) == 0 {
+		return nil, filer_pb.ErrNotFound
+	}
+
+	entry = &filer2.Entry{
+		FullPath: fullpath,
+	}
+
+	err = entry.DecodeAttributesAndChunks(data.Meta)
+	if err != nil {
+		return entry, fmt.Errorf("decode %s : %v", entry.FullPath, err)
+	}
+
+	return entry, nil
 }
 
 func (store *MongodbStore) DeleteEntry(ctx context.Context, fullpath util.FullPath) error {