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This commit is contained in:
0ceanSlim 2024-07-19 18:07:04 -04:00
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/tmp

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go.mod Normal file
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module GRAIN
go 1.22.2
require (
go.mongodb.org/mongo-driver v1.16.0
golang.org/x/net v0.27.0
)
require (
github.com/golang/snappy v0.0.4 // indirect
github.com/klauspost/compress v1.13.6 // indirect
github.com/montanaflynn/stats v0.7.1 // indirect
github.com/xdg-go/pbkdf2 v1.0.0 // indirect
github.com/xdg-go/scram v1.1.2 // indirect
github.com/xdg-go/stringprep v1.0.4 // indirect
github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d // indirect
golang.org/x/crypto v0.25.0 // indirect
golang.org/x/sync v0.7.0 // indirect
golang.org/x/text v0.16.0 // indirect
)

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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/golang/snappy v0.0.4 h1:yAGX7huGHXlcLOEtBnF4w7FQwA26wojNCwOYAEhLjQM=
github.com/golang/snappy v0.0.4/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/klauspost/compress v1.13.6 h1:P76CopJELS0TiO2mebmnzgWaajssP/EszplttgQxcgc=
github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
github.com/montanaflynn/stats v0.7.1 h1:etflOAAHORrCC44V+aR6Ftzort912ZU+YLiSTuV8eaE=
github.com/montanaflynn/stats v0.7.1/go.mod h1:etXPPgVO6n31NxCd9KQUMvCM+ve0ruNzt6R8Bnaayow=
github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=
github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
github.com/xdg-go/scram v1.1.2 h1:FHX5I5B4i4hKRVRBCFRxq1iQRej7WO3hhBuJf+UUySY=
github.com/xdg-go/scram v1.1.2/go.mod h1:RT/sEzTbU5y00aCK8UOx6R7YryM0iF1N2MOmC3kKLN4=
github.com/xdg-go/stringprep v1.0.4 h1:XLI/Ng3O1Atzq0oBs3TWm+5ZVgkq2aqdlvP9JtoZ6c8=
github.com/xdg-go/stringprep v1.0.4/go.mod h1:mPGuuIYwz7CmR2bT9j4GbQqutWS1zV24gijq1dTyGkM=
github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d h1:splanxYIlg+5LfHAM6xpdFEAYOk8iySO56hMFq6uLyA=
github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d/go.mod h1:rHwXgn7JulP+udvsHwJoVG1YGAP6VLg4y9I5dyZdqmA=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
go.mongodb.org/mongo-driver v1.16.0 h1:tpRsfBJMROVHKpdGyc1BBEzzjDUWjItxbVSZ8Ls4BQ4=
go.mongodb.org/mongo-driver v1.16.0/go.mod h1:oB6AhJQvFQL4LEHyXi6aJzQJtBiTQHiAd83l0GdFaiw=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.25.0 h1:ypSNr+bnYL2YhwoMt2zPxHFmbAN1KZs/njMG3hxUp30=
golang.org/x/crypto v0.25.0/go.mod h1:T+wALwcMOSE0kXgUAnPAHqTLW+XHgcELELW8VaDgm/M=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.27.0 h1:5K3Njcw06/l2y9vpGCSdcxWOYHOUk3dVNGDXN+FvAys=
golang.org/x/net v0.27.0/go.mod h1:dDi0PyhWNoiUOrAS8uXv/vnScO4wnHQO4mj9fn/RytE=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

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MIT License
Copyright (c) [2024] [OceanSlim]
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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package main
import (
"context"
"encoding/json"
"fmt"
"log"
"net/http"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"golang.org/x/net/websocket"
)
// Event represents the structure of the incoming events
type Event struct {
CreatedAt int64 `json:"created_at"`
Kind int `json:"kind"`
Content string `json:"content"`
Tags []string `json:"tags"`
PubKey string `json:"pubkey"`
ID string `json:"id"`
Sig string `json:"sig"`
}
// Database client and collections
var client *mongo.Client
var eventKind0Collection *mongo.Collection
var eventKind1Collection *mongo.Collection
func handler(ws *websocket.Conn) {
var msg string
for {
err := websocket.Message.Receive(ws, &msg)
if err != nil {
fmt.Println("Error receiving message:", err)
return
}
fmt.Println("Received message:", msg)
// Parse the received message
var event []interface{}
err = json.Unmarshal([]byte(msg), &event)
if err != nil {
fmt.Println("Error parsing message:", err)
return
}
if len(event) < 2 || event[0] != "EVENT" {
fmt.Println("Invalid event format")
continue
}
// Convert the event map to an Event struct
eventData, ok := event[1].(map[string]interface{})
if !ok {
fmt.Println("Invalid event data format")
continue
}
eventBytes, err := json.Marshal(eventData)
if err != nil {
fmt.Println("Error marshaling event data:", err)
continue
}
var evt Event
err = json.Unmarshal(eventBytes, &evt)
if err != nil {
fmt.Println("Error unmarshaling event data:", err)
continue
}
// Store the event in the appropriate MongoDB collection
var collection *mongo.Collection
switch evt.Kind {
case 0:
collection = eventKind0Collection
case 1:
collection = eventKind1Collection
default:
fmt.Println("Unknown event kind:", evt.Kind)
continue
}
_, err = collection.InsertOne(context.TODO(), evt)
if err != nil {
fmt.Println("Error inserting event into MongoDB:", err)
continue
}
fmt.Println("Inserted event into MongoDB:", evt.ID)
err = websocket.Message.Send(ws, "Echo: "+msg)
if err != nil {
fmt.Println("Error sending message:", err)
return
}
}
}
func main() {
// Initialize MongoDB client
var err error
clientOptions := options.Client().ApplyURI("mongodb://localhost:27017/")
client, err = mongo.Connect(context.TODO(), clientOptions)
if err != nil {
log.Fatal(err)
}
// Check the connection
err = client.Ping(context.TODO(), nil)
if err != nil {
log.Fatal(err)
}
fmt.Println("Connected to MongoDB!")
// Initialize collections
eventKind0Collection = client.Database("grain").Collection("event-kind0")
eventKind1Collection = client.Database("grain").Collection("event-kind1")
// Start WebSocket server
http.Handle("/", websocket.Handler(handler))
fmt.Println("WebSocket server started on :8080")
err = http.ListenAndServe(":8080", nil)
if err != nil {
fmt.Println("Error starting server:", err)
}
// Disconnect MongoDB client on exit
defer func() {
if err = client.Disconnect(context.TODO()); err != nil {
log.Fatal(err)
}
}()
}

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# GRAIN 🌾 WIP
**Go Relay and Information Network**
GRAIN is an open-source Nostr relay implementation written in Go. This project aims to provide a robust and efficient Nostr relay that supports the NIP-01 protocol, focusing on processing user metadata and text notes.
## Features
- **NIP-01 Protocol Support**: GRAIN fully supports the NIP-01 protocol for WebSocket communication.
- **Event Processing**: Handles events of kind 0 (user metadata) and kind 1 (text note).
- **MongoDB Storage**: Utilizes MongoDB to store and manage events efficiently.
- **Scalability**: Built with Go, ensuring high performance and scalability.
- **Open Source**: Licensed under the MIT License, making it free to use and modify.
## Installation
1. **Clone the repository**:
```sh
git clone https://github.com/oceanslim/grain.git
cd grain
```
2. **Build the executable**:
```sh
go build -o grain.exe
```
The `grain.exe` will be placed in a temporary directory within `...\appdata\local\temp\go-build` and subdirectories.
## Usage
To run the GRAIN relay:
```sh
./grain.exe
```
### Configuration 🍃
Configuration options can be set through environment variables or a configuration file. Example configuration:
```yml
server:
port: 8080
database:
type: mongodb
connection_string: mongodb://localhost:27017
database_name: grain
logging:
level: info
```
### WebSocket Endpoints
- Connect: / - Clients can connect to this endpoint to start a WebSocket session.
- Publish Event: Send events of kind 0 (user metadata) or kind 1 (text note) to the relay.
### Development
To contribute to GRAIN, follow these steps:
1. Fork the repository.
2. Create a new branch:
```sh
git checkout -b feature-branch
```
3. Make your changes.
4. Commit your changes:
```sh
git commit -m "Description of changes"
```
5. Push to the branch:
```sh
git push origin feature-branch
```
6. Create a Pull Request.
### Contributing
### License
This project is Open Source and licensed under the MIT License. See the [LICENSE](license) file for details.
### Acknowledgments
Special thanks to the Nostr community for their continuous support and contributions.
Feel free to reach out with any questions or issues you encounter while using GRAIN. Happy coding!