fix: assign commit error to err so deferred rollback triggers (closes #125)

When Commit() failed, the error was stored in commitErr instead of err,
so the deferred rollback (which checks err) was skipped.

docker-compose.yml

@@ -6,8 +6,9 @@ services:
       - "8080:8080"
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
-      - upaas-data:/var/lib/upaas
+      - ${HOST_DATA_DIR:-./data}:/var/lib/upaas
-    # environment:
+    environment:
+      - UPAAS_HOST_DATA_DIR=${HOST_DATA_DIR:-./data}
       # Optional: uncomment to enable debug logging
       # - DEBUG=true
       # Optional: Sentry error reporting
@@ -15,6 +16,3 @@ services:
       # Optional: Prometheus metrics auth
       # - METRICS_USERNAME=prometheus
       # - METRICS_PASSWORD=secret
-
-volumes:
-  upaas-data:

internal/database/migrations.go

@@ -113,9 +113,9 @@ func (d *Database) applyMigration(ctx context.Context, filename string) error {
 		return fmt.Errorf("failed to record migration: %w", err)
 	}
 
-	commitErr := transaction.Commit()
+	err = transaction.Commit()
-	if commitErr != nil {
+	if err != nil {
-		return fmt.Errorf("failed to commit migration: %w", commitErr)
+		return fmt.Errorf("failed to commit migration: %w", err)
 	}
 
 	return nil

internal/handlers/app.go

@@ -72,7 +72,7 @@ func (h *Handlers) HandleAppCreate() http.HandlerFunc { //nolint:funlen // valid
 		nameErr := validateAppName(name)
 		if nameErr != nil {
 			data["Error"] = "Invalid app name: " + nameErr.Error()
-			_ = tmpl.ExecuteTemplate(writer, "app_new.html", data)
+			h.renderTemplate(writer, tmpl, "app_new.html", data)
 
 			return
 		}
@@ -228,7 +228,7 @@ func (h *Handlers) HandleAppUpdate() http.HandlerFunc { //nolint:funlen // valid
 				"App":   application,
 				"Error": "Invalid app name: " + nameErr.Error(),
 			}, request)
-			_ = tmpl.ExecuteTemplate(writer, "app_edit.html", data)
+			h.renderTemplate(writer, tmpl, "app_edit.html", data)
 
 			return
 		}
@@ -239,7 +239,7 @@ func (h *Handlers) HandleAppUpdate() http.HandlerFunc { //nolint:funlen // valid
 				"App":   application,
 				"Error": "Invalid repository URL: " + repoURLErr.Error(),
 			}, request)
-			_ = tmpl.ExecuteTemplate(writer, "app_edit.html", data)
+			h.renderTemplate(writer, tmpl, "app_edit.html", data)
 
 			return
 		}

internal/models/deployment.go

@@ -5,6 +5,7 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"strings"
 	"time"
 
 	"git.eeqj.de/sneak/upaas/internal/database"
@@ -76,7 +77,11 @@ func (d *Deployment) Reload(ctx context.Context) error {
 	return d.scan(row)
 }
 
+// maxLogSize is the maximum size of deployment logs stored in the database (1MB).
+const maxLogSize = 1 << 20
+
 // AppendLog appends a log line to the deployment logs.
+// If the total log size exceeds maxLogSize, the oldest lines are truncated.
 func (d *Deployment) AppendLog(ctx context.Context, line string) error {
 	var currentLogs string
 
@@ -84,7 +89,22 @@ func (d *Deployment) AppendLog(ctx context.Context, line string) error {
 		currentLogs = d.Logs.String
 	}
 
-	d.Logs = sql.NullString{String: currentLogs + line + "\n", Valid: true}
+	newLogs := currentLogs + line + "\n"
+
+	if len(newLogs) > maxLogSize {
+		// Keep the most recent logs that fit within the limit.
+		// Find a newline after the truncation point to avoid partial lines.
+		truncateAt := len(newLogs) - maxLogSize
+		idx := strings.Index(newLogs[truncateAt:], "\n")
+
+		if idx >= 0 {
+			newLogs = "[earlier logs truncated]\n" + newLogs[truncateAt+idx+1:]
+		} else {
+			newLogs = "[earlier logs truncated]\n" + newLogs[truncateAt:]
+		}
+	}
+
+	d.Logs = sql.NullString{String: newLogs, Valid: true}
 
 	return d.Save(ctx)
 }

internal/service/deploy/deploy.go

@@ -251,8 +251,8 @@ func New(lc fx.Lifecycle, params ServiceParams) (*Service, error) {
 }
 
 // GetBuildDir returns the build directory path for an app.
-func (svc *Service) GetBuildDir(appID string) string {
+func (svc *Service) GetBuildDir(appName string) string {
-	return filepath.Join(svc.config.DataDir, "builds", appID)
+	return filepath.Join(svc.config.DataDir, "builds", appName)
 }
 
 // GetLogFilePath returns the path to the log file for a deployment.