Matrix notifications (fix #3)

deploy_error.go

@@ -1,6 +1,10 @@
 // package main is the main package for the LapisDeploy program
 package main
 
+import (
+	"fmt"
+)
+
 // DeployError contains important information about an error if something went wrong.
 type DeployError struct {
 	code int
@@ -9,6 +13,13 @@ type DeployError struct {
 	command_output string
 }
 
+// SendOverMatrix provides an easy way to send the contents of a DeployError over Matrix
+func (deploy_error *DeployError) SendOverMatrix() {
+	sendMessage(MatrixMessage{text: fmt.Sprintf("🔴 **Error in **`%s`**!**\n- *%s*\n- Code: %d",
+		deploy_error.where, deploy_error.details, deploy_error.code),
+	})
+}
+
 // newDeployError creates a DeployError 
 func newDeployError(code int, where string, details string, command_output string) DeployError {
 	return DeployError{ code: code, where: where, details: details, command_output: command_output }

go.mod

@@ -13,6 +13,7 @@ require (
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.1 // indirect
 	github.com/tidwall/sjson v1.2.5 // indirect
+	github.com/yuin/goldmark v1.6.0 // indirect
 	go.mau.fi/util v0.4.0 // indirect
 	golang.org/x/crypto v0.21.0 // indirect
 	golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 // indirect

go.sum

@@ -35,6 +35,8 @@ github.com/tidwall/pretty v1.2.1 h1:qjsOFOWWQl+N3RsoF5/ssm1pHmJJwhjlSbZ51I6wMl4=
 github.com/tidwall/pretty v1.2.1/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
 github.com/tidwall/sjson v1.2.5 h1:kLy8mja+1c9jlljvWTlSazM7cKDRfJuR/bOJhcY5NcY=
 github.com/tidwall/sjson v1.2.5/go.mod h1:Fvgq9kS/6ociJEDnK0Fk1cpYF4FIW6ZF7LAe+6jwd28=
+github.com/yuin/goldmark v1.6.0 h1:boZcn2GTjpsynOsC0iJHnBWa4Bi0qzfJjthwauItG68=
+github.com/yuin/goldmark v1.6.0/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.mau.fi/util v0.4.0 h1:S2X3qU4pUcb/vxBRfAuZjbrR9xVMAXSjQojNBLPBbhs=
 go.mau.fi/util v0.4.0/go.mod h1:leeiHtgVBuN+W9aDii3deAXnfC563iN3WK6BF8/AjNw=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=

main.go

@@ -25,16 +25,19 @@ func fileExists(path string) (bool, error) {
 func handler(data map[string]interface{}) {
 	repository := data["repository"].(map[string]interface{})
 	log.Default().Printf("Repo: %s", repository["full_name"])
+	sendMessage(MatrixMessage{text: fmt.Sprintf("⚪️ Handling webhook for `%s`...", repository["full_name"])})
 
 	deploy_error := pullRepo(repository["ssh_url"].(string), repository["name"].(string))
 	if deploy_error.code != 0 {
-		log.Default().Printf("Error in %s! [Code: %d] (%s)", deploy_error.where, deploy_error.code, deploy_error.details)
+		deploy_error.SendOverMatrix()
+		return
 	}
 	deploy_error = restartServer(repository["name"].(string))
 	if deploy_error.code != 0 {
-		log.Printf("Error in %s! [Code: %d] (%s) {Command output: '%s'}",
+		deploy_error.SendOverMatrix()
-			deploy_error.where, deploy_error.code, deploy_error.details, deploy_error.command_output)
+		return
 	}
+	sendMessage(MatrixMessage{text: "🟢 Deployed successfully!"})
 }
 
 // main is the starting point of the program

matrix.go

@@ -3,14 +3,29 @@ package main
 
 import (
 	"context"
-	//"errors"
 	"log"
-	//"sync"
+	"time"
 
 	"maunium.net/go/mautrix"
 	"maunium.net/go/mautrix/event"
+	"maunium.net/go/mautrix/id"
+	"maunium.net/go/mautrix/format"
 )
 
+type MatrixMessage struct {
+	text string
+}
+
+// I/O queues
+var MatrixIn  []MatrixMessage
+var MatrixOut []MatrixMessage
+
+// sendMessage sends a message through Matrix
+func sendMessage(msg MatrixMessage) {
+	MatrixOut = append(MatrixOut, msg)
+}
+
+// initMatrix starts a Matrix bot.
 func initMatrix() {
 	client, err := mautrix.NewClient(configuration.matrix.homeserver, "", "")
 	if err != nil {
@@ -43,22 +58,24 @@ func initMatrix() {
 		}
 	})	
 
+	go func () {
+		for range time.Tick(time.Second * 3) {
+			log.Printf("Scanning for queued messages...")
+			for _, msg := range MatrixOut {
+				_, err := client.SendMessageEvent(context.Background(), id.RoomID(configuration.matrix.room_id), event.EventMessage, format.RenderMarkdown(msg.text, true, false))
+				if err != nil {
+					log.Printf("[Matrix] ERROR : %s", err)
+					continue
+				}
+				log.Print("[Matrix] Sent queued message successfully.")
+			}
+			MatrixOut = []MatrixMessage{}
+		}
+	}()
+
 	log.Print("[Matrix] Running!")
 	err = client.Sync()
 	if err != nil {
 		log.Fatal(err)
 	}
-	//syncCtx, cancelSync := context.WithCancel(context.Background())
-	//var syncStopWait sync.WaitGroup
-	//syncStopWait.Add(1)
-
-	//go func() {
-	//	err = client.SyncWithContext(syncCtx)
-	//	defer syncStopWait.Done()
-	//	if err != nil && !errors.Is(err, context.Canceled) {
-	//		panic(err)
-	//	}
-	//}()
-	//cancelSync()
-	//syncStopWait.Wait()
 }