From 1b673ef551a09ccdb98b33d8a7c0464f519b21f2 Mon Sep 17 00:00:00 2001
From: Mark Haines <mjark@negativecurvature.net>
Date: Tue, 14 Mar 2017 13:47:26 +0000
Subject: [PATCH] Tool for creating room events

---
 .../dendrite/tools/create-room-events/main.go | 129 ++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 src/github.com/matrix-org/dendrite/tools/create-room-events/main.go

diff --git a/src/github.com/matrix-org/dendrite/tools/create-room-events/main.go b/src/github.com/matrix-org/dendrite/tools/create-room-events/main.go
new file mode 100644
index 000000000..090f26d2c
--- /dev/null
+++ b/src/github.com/matrix-org/dendrite/tools/create-room-events/main.go
@@ -0,0 +1,129 @@
+// Generate a list of matrix room events for load testing.
+// Writes the events to stdout by default.
+package main
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"github.com/matrix-org/dendrite/roomserver/api"
+	"github.com/matrix-org/gomatrixserverlib"
+	"golang.org/x/crypto/ed25519"
+	"os"
+	"strconv"
+	"time"
+)
+
+var (
+	// The name of the matrix server to generate events for.
+	serverName = defaulting(os.Getenv("SERVER_NAME"), "localhost")
+	// The ID of the key used to sign the events.
+	keyID = defaulting(os.Getenv("KEY_ID"), "ed25519:auto")
+	// Base64 encoded private key to sign the events with.
+	privateKeyString = defaulting(os.Getenv("PRIVATE_KEY"), defaultKey)
+	// The room ID to generate events in.
+	roomID = defaulting(os.Getenv("ROOM_ID"), "!roomid:"+serverName)
+	// The user ID to use for as the event sender.
+	userID = defaulting(os.Getenv("USER_ID"), "@userid:"+serverName)
+	// The number of m.room.messsage events to generate.
+	messageCount = defaulting(os.Getenv("MESSAGE_COUNT"), "10")
+	// The output format to use for the messages.
+	//	INPUT -> api.InputRoomEvent
+	//  RAW   -> gomatrixserverlib.Event
+	format = defaulting(os.Getenv("FORMAT"), "INPUT")
+	//
+)
+
+func defaulting(value, defaultValue string) string {
+	if value == "" {
+		return defaultValue
+	}
+	return value
+}
+
+// By default we use a private key of 0.
+const defaultKey = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+
+var privateKey ed25519.PrivateKey
+var emptyString = ""
+var now time.Time
+var b gomatrixserverlib.EventBuilder
+var eventID int
+
+func main() {
+	// Decode the ed25519 private key.
+	privateKeyBytes, err := base64.RawStdEncoding.DecodeString(privateKeyString)
+	if err != nil {
+		panic(err)
+	}
+	privateKey = ed25519.PrivateKey(privateKeyBytes)
+
+	count, err := strconv.Atoi(messageCount)
+	if err != nil {
+		panic(err)
+	}
+
+	// Build a m.room.create event.
+	b.Sender = userID
+	b.RoomID = roomID
+	b.Type = "m.room.create"
+	b.StateKey = &emptyString
+	b.SetContent(map[string]string{"creator": userID})
+	create := build()
+
+	// Build a m.room.member event.
+	b.Type = "m.room.member"
+	b.StateKey = &userID
+	b.SetContent(map[string]string{"membership": "join"})
+	b.AuthEvents = []gomatrixserverlib.EventReference{create}
+	member := build()
+
+	// Build a number of m.room.message events.
+	b.Type = "m.room.message"
+	b.StateKey = nil
+	b.SetContent(map[string]string{"body": "Test Message"})
+	b.AuthEvents = []gomatrixserverlib.EventReference{create, member}
+	for i := 0; i < count; i++ {
+		build()
+	}
+}
+
+// Build an event and write the event to the output.
+func build() gomatrixserverlib.EventReference {
+	eventID++
+	id := fmt.Sprintf("$%d:%s", eventID, serverName)
+	now = time.Unix(0, 0)
+	event, err := b.Build(id, now, serverName, keyID, privateKey)
+	if err != nil {
+		panic(err)
+	}
+	writeEvent(event)
+	reference := event.EventReference()
+	b.PrevEvents = []gomatrixserverlib.EventReference{reference}
+	b.Depth++
+	return reference
+}
+
+// Write an event to the output.
+func writeEvent(event gomatrixserverlib.Event) {
+	encoder := json.NewEncoder(os.Stdout)
+	if format == "INPUT" {
+		var ire api.InputRoomEvent
+		ire.Kind = api.KindNew
+		ire.Event = event.JSON()
+		authEventIDs := []string{}
+		for _, ref := range b.AuthEvents {
+			authEventIDs = append(authEventIDs, ref.EventID)
+		}
+		ire.AuthEventIDs = authEventIDs
+		if err := encoder.Encode(ire); err != nil {
+			panic(err)
+		}
+	} else if format == "RAW" {
+		if err := encoder.Encode(event); err != nil {
+			panic(err)
+		}
+	} else {
+		panic(fmt.Errorf("Format %q is not valid, must be %q or %q", format, "RAW", "INPUT"))
+	}
+}