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https://github.com/0ceanSlim/grain.git
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query moved to db package
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parent
c8ed954a9d
commit
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109
server/db/queryMongo.go
Normal file
109
server/db/queryMongo.go
Normal file
@ -0,0 +1,109 @@
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package db
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import (
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"context"
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"fmt"
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relay "grain/server/types"
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"go.mongodb.org/mongo-driver/bson"
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"go.mongodb.org/mongo-driver/mongo"
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"go.mongodb.org/mongo-driver/mongo/options"
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)
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// QueryEvents queries events from the MongoDB collection(s) based on filters
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func QueryEvents(filters []relay.Filter, client *mongo.Client, databaseName string) ([]relay.Event, error) {
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var results []relay.Event
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for _, filter := range filters {
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filterBson := bson.M{}
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// Construct the BSON query based on the filters
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if len(filter.IDs) > 0 {
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filterBson["id"] = bson.M{"$in": filter.IDs}
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}
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if len(filter.Authors) > 0 {
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filterBson["pubkey"] = bson.M{"$in": filter.Authors}
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}
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if len(filter.Kinds) > 0 {
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filterBson["kind"] = bson.M{"$in": filter.Kinds}
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}
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if filter.Tags != nil {
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for key, values := range filter.Tags {
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if len(values) > 0 {
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filterBson["tags."+key] = bson.M{"$in": values}
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}
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}
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}
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if filter.Since != nil {
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filterBson["created_at"] = bson.M{"$gte": *filter.Since}
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}
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if filter.Until != nil {
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if filterBson["created_at"] == nil {
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filterBson["created_at"] = bson.M{"$lte": *filter.Until}
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} else {
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filterBson["created_at"].(bson.M)["$lte"] = *filter.Until
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}
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}
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opts := options.Find().SetSort(bson.D{{Key: "created_at", Value: -1}})
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if filter.Limit != nil {
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opts.SetLimit(int64(*filter.Limit))
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}
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// If no specific kinds are specified, query all collections in the database
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if len(filter.Kinds) == 0 {
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collections, err := client.Database(databaseName).ListCollectionNames(context.TODO(), bson.D{})
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if err != nil {
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return nil, fmt.Errorf("error listing collections: %v", err)
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}
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for _, collectionName := range collections {
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fmt.Printf("Querying collection: %s with query: %v\n", collectionName, filterBson)
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collection := client.Database(databaseName).Collection(collectionName)
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cursor, err := collection.Find(context.TODO(), filterBson, opts)
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if err != nil {
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return nil, fmt.Errorf("error querying collection %s: %v", collectionName, err)
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}
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defer cursor.Close(context.TODO())
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for cursor.Next(context.TODO()) {
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var event relay.Event
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if err := cursor.Decode(&event); err != nil {
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return nil, fmt.Errorf("error decoding event from collection %s: %v", collectionName, err)
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}
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results = append(results, event)
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}
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if err := cursor.Err(); err != nil {
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return nil, fmt.Errorf("cursor error in collection %s: %v", collectionName, err)
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}
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}
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} else {
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// Query specific collections based on kinds
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for _, kind := range filter.Kinds {
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collectionName := fmt.Sprintf("event-kind%d", kind)
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fmt.Printf("Querying collection: %s with query: %v\n", collectionName, filterBson)
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collection := client.Database(databaseName).Collection(collectionName)
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cursor, err := collection.Find(context.TODO(), filterBson, opts)
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if err != nil {
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return nil, fmt.Errorf("error querying collection %s: %v", collectionName, err)
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}
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defer cursor.Close(context.TODO())
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for cursor.Next(context.TODO()) {
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var event relay.Event
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if err := cursor.Decode(&event); err != nil {
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return nil, fmt.Errorf("error decoding event from collection %s: %v", collectionName, err)
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}
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results = append(results, event)
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}
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if err := cursor.Err(); err != nil {
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return nil, fmt.Errorf("cursor error in collection %s: %v", collectionName, err)
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}
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}
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}
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}
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return results, nil
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}
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@ -1,7 +1,6 @@
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package handlers
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import (
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"context"
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"encoding/json"
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"fmt"
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"grain/config"
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@ -11,9 +10,6 @@ import (
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"grain/server/utils"
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"sync"
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"go.mongodb.org/mongo-driver/bson"
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"go.mongodb.org/mongo-driver/mongo"
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"go.mongodb.org/mongo-driver/mongo/options"
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"golang.org/x/net/websocket"
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)
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@ -77,7 +73,7 @@ func HandleReq(ws *websocket.Conn, message []interface{}, subscriptions map[stri
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fmt.Printf("Subscription updated: %s with %d filters\n", subID, len(filters))
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// Query the database with filters and send back the results
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queriedEvents, err := QueryEvents(filters, db.GetClient(), "grain")
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queriedEvents, err := db.QueryEvents(filters, db.GetClient(), "grain")
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if err != nil {
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fmt.Println("Error querying events:", err)
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response.SendClosed(ws, subID, "error: could not query events")
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@ -115,101 +111,3 @@ func HandleReq(ws *websocket.Conn, message []interface{}, subscriptions map[stri
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fmt.Println("Subscription handling completed, keeping connection open.")
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})
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}
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// QueryEvents queries events from the MongoDB collection(s) based on filters
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func QueryEvents(filters []relay.Filter, client *mongo.Client, databaseName string) ([]relay.Event, error) {
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var results []relay.Event
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for _, filter := range filters {
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filterBson := bson.M{}
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// Construct the BSON query based on the filters
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if len(filter.IDs) > 0 {
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filterBson["id"] = bson.M{"$in": filter.IDs}
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}
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if len(filter.Authors) > 0 {
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filterBson["pubkey"] = bson.M{"$in": filter.Authors}
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}
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if len(filter.Kinds) > 0 {
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filterBson["kind"] = bson.M{"$in": filter.Kinds}
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}
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if filter.Tags != nil {
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for key, values := range filter.Tags {
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if len(values) > 0 {
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filterBson["tags."+key] = bson.M{"$in": values}
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}
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}
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}
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if filter.Since != nil {
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filterBson["created_at"] = bson.M{"$gte": *filter.Since}
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}
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if filter.Until != nil {
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if filterBson["created_at"] == nil {
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filterBson["created_at"] = bson.M{"$lte": *filter.Until}
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} else {
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filterBson["created_at"].(bson.M)["$lte"] = *filter.Until
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}
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}
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opts := options.Find().SetSort(bson.D{{Key: "created_at", Value: -1}})
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if filter.Limit != nil {
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opts.SetLimit(int64(*filter.Limit))
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}
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// If no specific kinds are specified, query all collections in the database
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if len(filter.Kinds) == 0 {
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collections, err := client.Database(databaseName).ListCollectionNames(context.TODO(), bson.D{})
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if err != nil {
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return nil, fmt.Errorf("error listing collections: %v", err)
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}
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for _, collectionName := range collections {
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fmt.Printf("Querying collection: %s with query: %v\n", collectionName, filterBson)
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collection := client.Database(databaseName).Collection(collectionName)
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cursor, err := collection.Find(context.TODO(), filterBson, opts)
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if err != nil {
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return nil, fmt.Errorf("error querying collection %s: %v", collectionName, err)
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}
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defer cursor.Close(context.TODO())
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for cursor.Next(context.TODO()) {
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var event relay.Event
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if err := cursor.Decode(&event); err != nil {
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return nil, fmt.Errorf("error decoding event from collection %s: %v", collectionName, err)
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}
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results = append(results, event)
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}
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if err := cursor.Err(); err != nil {
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return nil, fmt.Errorf("cursor error in collection %s: %v", collectionName, err)
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}
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}
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} else {
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// Query specific collections based on kinds
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for _, kind := range filter.Kinds {
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collectionName := fmt.Sprintf("event-kind%d", kind)
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fmt.Printf("Querying collection: %s with query: %v\n", collectionName, filterBson)
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collection := client.Database(databaseName).Collection(collectionName)
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cursor, err := collection.Find(context.TODO(), filterBson, opts)
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if err != nil {
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return nil, fmt.Errorf("error querying collection %s: %v", collectionName, err)
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}
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defer cursor.Close(context.TODO())
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for cursor.Next(context.TODO()) {
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var event relay.Event
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if err := cursor.Decode(&event); err != nil {
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return nil, fmt.Errorf("error decoding event from collection %s: %v", collectionName, err)
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}
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results = append(results, event)
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}
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if err := cursor.Err(); err != nil {
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return nil, fmt.Errorf("cursor error in collection %s: %v", collectionName, err)
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}
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}
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}
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}
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return results, nil
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}
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