moved handlers into their own package with seperate go files for each

This commit is contained in:
0ceanSlim 2024-07-23 13:57:21 -04:00
parent 81d73a5ec3
commit 45d38b45a4
5 changed files with 249 additions and 229 deletions

32
relay/handlers/close.go Normal file
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@ -0,0 +1,32 @@
package handlers
import (
"encoding/json"
"fmt"
"golang.org/x/net/websocket"
)
func HandleClose(ws *websocket.Conn, message []interface{}) {
if len(message) != 2 {
fmt.Println("Invalid CLOSE message format")
return
}
subID, ok := message[1].(string)
if !ok {
fmt.Println("Invalid subscription ID format")
return
}
delete(subscriptions, subID)
fmt.Println("Subscription closed:", subID)
closeMsg := []interface{}{"CLOSED", subID, "Subscription closed"}
closeBytes, _ := json.Marshal(closeMsg)
err := websocket.Message.Send(ws, string(closeBytes))
if err != nil {
fmt.Println("Error sending CLOSE message:", err)
return
}
}

76
relay/handlers/event.go Normal file
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@ -0,0 +1,76 @@
package handlers
import (
"context"
"encoding/json"
"fmt"
"grain/relay/db"
"grain/relay/kinds"
"grain/relay/utils"
relay "grain/relay/types"
"golang.org/x/net/websocket"
)
func HandleEvent(ws *websocket.Conn, message []interface{}) {
if len(message) != 2 {
fmt.Println("Invalid EVENT message format")
return
}
eventData, ok := message[1].(map[string]interface{})
if !ok {
fmt.Println("Invalid event data format")
return
}
eventBytes, err := json.Marshal(eventData)
if err != nil {
fmt.Println("Error marshaling event data:", err)
return
}
var evt relay.Event
err = json.Unmarshal(eventBytes, &evt)
if err != nil {
fmt.Println("Error unmarshaling event data:", err)
return
}
// Call the HandleKind function
HandleKind(context.TODO(), evt, ws)
fmt.Println("Event processed:", evt.ID)
}
func HandleKind(ctx context.Context, evt relay.Event, ws *websocket.Conn) {
if !utils.CheckSignature(evt) {
OKResponse(ws, evt.ID, false, "invalid: signature verification failed")
return
}
collection := db.GetCollection(evt.Kind)
var err error
switch evt.Kind {
case 0:
err = kinds.HandleKind0(ctx, evt, collection)
case 1:
err = kinds.HandleKind1(ctx, evt, collection)
default:
err = kinds.HandleUnknownKind(ctx, evt, collection)
}
if err != nil {
OKResponse(ws, evt.ID, false, fmt.Sprintf("error: %v", err))
return
}
OKResponse(ws, evt.ID, true, "")
}
func OKResponse(ws *websocket.Conn, eventID string, status bool, message string) {
response := []interface{}{"OK", eventID, status, message}
responseBytes, _ := json.Marshal(response)
websocket.Message.Send(ws, string(responseBytes))
}

137
relay/handlers/req.go Normal file
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@ -0,0 +1,137 @@
package handlers
import (
"context"
"encoding/json"
"fmt"
"grain/relay/db"
relay "grain/relay/types"
"grain/relay/utils"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"golang.org/x/net/websocket"
)
var subscriptions = make(map[string]relay.Subscription)
func HandleReq(ws *websocket.Conn, message []interface{}) {
if len(message) < 3 {
fmt.Println("Invalid REQ message format")
return
}
subID, ok := message[1].(string)
if !ok {
fmt.Println("Invalid subscription ID format")
return
}
filters := make([]relay.Filter, len(message)-2)
for i, filter := range message[2:] {
filterData, ok := filter.(map[string]interface{})
if !ok {
fmt.Println("Invalid filter format")
return
}
var f relay.Filter
f.IDs = utils.ToStringArray(filterData["ids"])
f.Authors = utils.ToStringArray(filterData["authors"])
f.Kinds = utils.ToIntArray(filterData["kinds"])
f.Tags = utils.ToTagsMap(filterData["tags"])
f.Since = utils.ToTime(filterData["since"])
f.Until = utils.ToTime(filterData["until"])
f.Limit = utils.ToInt(filterData["limit"])
filters[i] = f
}
subscriptions[subID] = relay.Subscription{ID: subID, Filters: filters}
fmt.Println("Subscription added:", subID)
// Query the database with filters and send back the results
// TO DO why is this taking a certain kind as an argument for collection???
queriedEvents, err := QueryEvents(filters, db.GetClient(), "grain", "event-kind1")
if err != nil {
fmt.Println("Error querying events:", err)
return
}
for _, evt := range queriedEvents {
msg := []interface{}{"EVENT", subID, evt}
msgBytes, _ := json.Marshal(msg)
err = websocket.Message.Send(ws, string(msgBytes))
if err != nil {
fmt.Println("Error sending event:", err)
return
}
}
// Indicate end of stored events
eoseMsg := []interface{}{"EOSE", subID}
eoseBytes, _ := json.Marshal(eoseMsg)
err = websocket.Message.Send(ws, string(eoseBytes))
if err != nil {
fmt.Println("Error sending EOSE:", err)
return
}
}
// QueryEvents queries events from the MongoDB collection based on filters
func QueryEvents(filters []relay.Filter, client *mongo.Client, databaseName, collectionName string) ([]relay.Event, error) {
collection := client.Database(databaseName).Collection(collectionName)
var results []relay.Event
for _, filter := range filters {
filterBson := bson.M{}
if len(filter.IDs) > 0 {
filterBson["_id"] = bson.M{"$in": filter.IDs}
}
if len(filter.Authors) > 0 {
filterBson["author"] = bson.M{"$in": filter.Authors}
}
if len(filter.Kinds) > 0 {
filterBson["kind"] = bson.M{"$in": filter.Kinds}
}
if filter.Tags != nil {
for key, values := range filter.Tags {
if len(values) > 0 {
filterBson[key] = bson.M{"$in": values}
}
}
}
if filter.Since != nil {
filterBson["created_at"] = bson.M{"$gte": *filter.Since}
}
if filter.Until != nil {
filterBson["created_at"] = bson.M{"$lte": *filter.Until}
}
opts := options.Find()
if filter.Limit != nil {
opts.SetLimit(int64(*filter.Limit))
}
cursor, err := collection.Find(context.TODO(), filterBson, opts)
if err != nil {
return nil, fmt.Errorf("error querying events: %v", err)
}
defer cursor.Close(context.TODO())
for cursor.Next(context.TODO()) {
var event relay.Event
if err := cursor.Decode(&event); err != nil {
return nil, fmt.Errorf("error decoding event: %v", err)
}
results = append(results, event)
}
if err := cursor.Err(); err != nil {
return nil, fmt.Errorf("cursor error: %v", err)
}
}
return results, nil
}

View File

@ -1,70 +0,0 @@
package relay
import (
"context"
"fmt"
relay "grain/relay/types"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
)
// QueryEvents queries events from the MongoDB collection based on filters
func QueryEvents(filters []relay.Filter, client *mongo.Client, databaseName, collectionName string) ([]relay.Event, error) {
collection := client.Database(databaseName).Collection(collectionName)
var results []relay.Event
for _, filter := range filters {
filterBson := bson.M{}
if len(filter.IDs) > 0 {
filterBson["_id"] = bson.M{"$in": filter.IDs}
}
if len(filter.Authors) > 0 {
filterBson["author"] = bson.M{"$in": filter.Authors}
}
if len(filter.Kinds) > 0 {
filterBson["kind"] = bson.M{"$in": filter.Kinds}
}
if filter.Tags != nil {
for key, values := range filter.Tags {
if len(values) > 0 {
filterBson[key] = bson.M{"$in": values}
}
}
}
if filter.Since != nil {
filterBson["created_at"] = bson.M{"$gte": *filter.Since}
}
if filter.Until != nil {
filterBson["created_at"] = bson.M{"$lte": *filter.Until}
}
opts := options.Find()
if filter.Limit != nil {
opts.SetLimit(int64(*filter.Limit))
}
cursor, err := collection.Find(context.TODO(), filterBson, opts)
if err != nil {
return nil, fmt.Errorf("error querying events: %v", err)
}
defer cursor.Close(context.TODO())
for cursor.Next(context.TODO()) {
var event relay.Event
if err := cursor.Decode(&event); err != nil {
return nil, fmt.Errorf("error decoding event: %v", err)
}
results = append(results, event)
}
if err := cursor.Err(); err != nil {
return nil, fmt.Errorf("cursor error: %v", err)
}
}
return results, nil
}

View File

@ -1,19 +1,13 @@
package relay package relay
import ( import (
"context"
"encoding/json" "encoding/json"
"fmt" "fmt"
"grain/relay/db" "grain/relay/handlers"
"grain/relay/kinds"
relay "grain/relay/types"
"grain/relay/utils"
"golang.org/x/net/websocket" "golang.org/x/net/websocket"
) )
var subscriptions = make(map[string]relay.Subscription)
func Listener(ws *websocket.Conn) { func Listener(ws *websocket.Conn) {
defer ws.Close() defer ws.Close()
@ -46,162 +40,13 @@ func Listener(ws *websocket.Conn) {
switch messageType { switch messageType {
case "EVENT": case "EVENT":
handleEvent(ws, message) handlers.HandleEvent(ws, message)
case "REQ": case "REQ":
handleReq(ws, message) handlers.HandleReq(ws, message)
case "CLOSE": case "CLOSE":
handleClose(ws, message) handlers.HandleClose(ws, message)
default: default:
fmt.Println("Unknown message type:", messageType) fmt.Println("Unknown message type:", messageType)
} }
} }
} }
func handleEvent(ws *websocket.Conn, message []interface{}) {
if len(message) != 2 {
fmt.Println("Invalid EVENT message format")
return
}
eventData, ok := message[1].(map[string]interface{})
if !ok {
fmt.Println("Invalid event data format")
return
}
eventBytes, err := json.Marshal(eventData)
if err != nil {
fmt.Println("Error marshaling event data:", err)
return
}
var evt relay.Event
err = json.Unmarshal(eventBytes, &evt)
if err != nil {
fmt.Println("Error unmarshaling event data:", err)
return
}
// Call the HandleKind function
HandleKind(context.TODO(), evt, ws)
fmt.Println("Event processed:", evt.ID)
}
func HandleKind(ctx context.Context, evt relay.Event, ws *websocket.Conn) {
if !utils.CheckSignature(evt) {
sendOKResponse(ws, evt.ID, false, "invalid: signature verification failed")
return
}
collection := db.GetCollection(evt.Kind)
var err error
switch evt.Kind {
case 0:
err = kinds.HandleKind0(ctx, evt, collection)
case 1:
err = kinds.HandleKind1(ctx, evt, collection)
default:
err = kinds.HandleUnknownKind(ctx, evt, collection)
}
if err != nil {
sendOKResponse(ws, evt.ID, false, fmt.Sprintf("error: %v", err))
return
}
sendOKResponse(ws, evt.ID, true, "")
}
func sendOKResponse(ws *websocket.Conn, eventID string, status bool, message string) {
response := []interface{}{"OK", eventID, status, message}
responseBytes, _ := json.Marshal(response)
websocket.Message.Send(ws, string(responseBytes))
}
func handleReq(ws *websocket.Conn, message []interface{}) {
if len(message) < 3 {
fmt.Println("Invalid REQ message format")
return
}
subID, ok := message[1].(string)
if !ok {
fmt.Println("Invalid subscription ID format")
return
}
filters := make([]relay.Filter, len(message)-2)
for i, filter := range message[2:] {
filterData, ok := filter.(map[string]interface{})
if !ok {
fmt.Println("Invalid filter format")
return
}
var f relay.Filter
f.IDs = utils.ToStringArray(filterData["ids"])
f.Authors = utils.ToStringArray(filterData["authors"])
f.Kinds = utils.ToIntArray(filterData["kinds"])
f.Tags = utils.ToTagsMap(filterData["tags"])
f.Since = utils.ToTime(filterData["since"])
f.Until = utils.ToTime(filterData["until"])
f.Limit = utils.ToInt(filterData["limit"])
filters[i] = f
}
subscriptions[subID] = relay.Subscription{ID: subID, Filters: filters}
fmt.Println("Subscription added:", subID)
// Query the database with filters and send back the results
// TO DO why is this taking a certain kind as an argument for collection???
queriedEvents, err := QueryEvents(filters, db.GetClient(), "grain", "event-kind1")
if err != nil {
fmt.Println("Error querying events:", err)
return
}
for _, evt := range queriedEvents {
msg := []interface{}{"EVENT", subID, evt}
msgBytes, _ := json.Marshal(msg)
err = websocket.Message.Send(ws, string(msgBytes))
if err != nil {
fmt.Println("Error sending event:", err)
return
}
}
// Indicate end of stored events
eoseMsg := []interface{}{"EOSE", subID}
eoseBytes, _ := json.Marshal(eoseMsg)
err = websocket.Message.Send(ws, string(eoseBytes))
if err != nil {
fmt.Println("Error sending EOSE:", err)
return
}
}
func handleClose(ws *websocket.Conn, message []interface{}) {
if len(message) != 2 {
fmt.Println("Invalid CLOSE message format")
return
}
subID, ok := message[1].(string)
if !ok {
fmt.Println("Invalid subscription ID format")
return
}
delete(subscriptions, subID)
fmt.Println("Subscription closed:", subID)
closeMsg := []interface{}{"CLOSED", subID, "Subscription closed"}
closeBytes, _ := json.Marshal(closeMsg)
err := websocket.Message.Send(ws, string(closeBytes))
if err != nil {
fmt.Println("Error sending CLOSE message:", err)
return
}
}