Add diagnostics

.dockerignore

@@ -0,0 +1,11 @@
+.venv/
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.Python
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+.git/
+.gitignore

.github/workflows/fly-deploy.yml

@@ -0,0 +1,45 @@
+name: Deploy to Fly.io
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+concurrency:
+  group: fly-deploy-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Compute app version
+        id: app_version
+        run: |
+          APP_VERSION=$(python - <<'PY'
+          import tomllib
+          import os
+
+          with open("pyproject.toml", "rb") as f:
+              data = tomllib.load(f)
+          base = data["project"]["version"]
+          parts = base.split(".")
+          if len(parts) != 3:
+              raise SystemExit(f"Expected semantic version 'X.Y.Z', got: {base}")
+          print(f"{parts[0]}.{parts[1]}.{os.environ['GITHUB_RUN_NUMBER']}")
+          PY
+          )
+          echo "value=${APP_VERSION}" >> "$GITHUB_OUTPUT"
+
+      - name: Setup flyctl
+        uses: superfly/flyctl-actions/setup-flyctl@master
+
+      - name: Deploy to Fly.io
+        run: flyctl deploy --remote-only --config fly.toml --build-arg APP_VERSION=${{ steps.app_version.outputs.value }}
+        env:
+          FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}

.gitignore

@@ -94,13 +94,6 @@ ipython_config.py
 #   install all needed dependencies.
 #Pipfile.lock
 
-# poetry
-#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
-#   This is especially recommended for binary packages to ensure reproducibility, and is more
-#   commonly ignored for libraries.
-#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
-*.lock
-
 # pdm
 #   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
 #pdm.lock

.python-version

@@ -1 +1 @@
-3.10
+3.14

Dockerfile

@@ -1,11 +1,21 @@
-FROM python:3-alpine
+FROM python:3.14-slim
 
 WORKDIR /app
 
+COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/
+
+ENV UV_PYTHON_DOWNLOADS=never
+ENV UV_LINK_MODE=copy
+
+COPY pyproject.toml uv.lock ./
+RUN uv sync --frozen --no-dev --no-install-project
+
 COPY . .
+RUN uv sync --frozen --no-dev
 
-RUN pip install --no-cache-dir .
+ARG APP_VERSION=dev
+ENV APP_VERSION=${APP_VERSION}
 
-EXPOSE 8000
+EXPOSE 8080
 
-CMD ["python", "src/main.py"]
+CMD ["/app/.venv/bin/python", "src/main.py"]

fly.toml

@@ -6,6 +6,22 @@ app = "flet-controls-gallery"
 [env]
   FLET_SERVER_PORT = "8080"
   FLET_FORCE_WEB_SERVER = "true"
+  FLET_SESSION_TIMEOUT = "600"
+  MEM_DIAG = "0"
+  MEM_DIAG_INTERVAL_SEC = "60"
+  MEM_DIAG_TRACE_INTERVAL_SEC = "300"
+  MEM_DIAG_TRACE_FRAMES = "10"
+  MEM_DIAG_TRACE_TOP = "10"
+  MEM_DIAG_CONTROL_SCAN_MAX_NODES = "15000"
+  MEM_DIAG_COLLECT_ON_SAMPLE = "1"
+  MEM_DIAG_CONTROL_SCAN = "1"
+  MEM_DIAG_GC_OBJECTS = "0"
+  MEM_DIAG_COLLECT_GEN2_ON_SAMPLE = "1"
+  MEM_DIAG_TYPE_HIST = "0"
+  MEM_DIAG_TYPE_HIST_INTERVAL_SEC = "300"
+  MEM_DIAG_TYPE_HIST_TOP = "30"
+  MALLOC_ARENA_MAX = "2"
+  MALLOC_TRIM_THRESHOLD_ = "131072"
 
 [experimental]
   allowed_public_ports = []
@@ -36,4 +52,4 @@ app = "flet-controls-gallery"
     grace_period = "1s"
     interval = "15s"
     restart_limit = 0
-    timeout = "2s"
+    timeout = "2s"

pyproject.toml

@@ -3,7 +3,7 @@ name = "gallery"
 version = "0.1.0"
 description = ""
 readme = "README.md"
-requires-python = ">=3.10"
+requires-python = ">=3.14"
 authors = [
     { name = "Flet developer", email = "you@example.com" }
 ]
@@ -12,6 +12,7 @@ dependencies = [
   "flet-audio",
   "flet-video",
   "flet",
+  "flet-web",
   "objgraph"
 ]
 
@@ -27,6 +28,6 @@ path = "src"
 
 [dependency-groups]
 dev = [
-    "flet[all]",
+    "flet-cli",
+    "flet-desktop",
 ]
-

src/components/app.py

@@ -1,6 +1,7 @@
 import flet as ft
 
 from components.app_bar import AppBar
+from components.diagnostics_view import DiagnosticsView
 from components.gallery_view import GalleryView
 from contexts.route import RouteContext, RouteContextValue
 from contexts.theme import ThemeContext, ThemeContextValue
@@ -74,7 +75,11 @@ def update_theme():
             lambda: ft.View(
                 route="/",
                 appbar=AppBar(),
-                controls=[GalleryView(gallery)],
+                controls=[
+                    DiagnosticsView(key="diagnostics-view")
+                    if app.route == "/__diag"
+                    else GalleryView(gallery, key="gallery-view")
+                ],
             ),
         ),
     )

src/components/app_bar.py

@@ -1,9 +1,34 @@
+import platform
+
 import flet as ft
 import flet.version
 
+from utils.app_version import get_app_version
+
 
 @ft.component
 def AppBar():
+    def show_about_dialog():
+        ft.context.page.show_dialog(
+            ft.AlertDialog(
+                title=ft.Text("About Gallery"),
+                content=ft.Column(
+                    tight=True,
+                    controls=[
+                        ft.Text(f"Gallery version: {get_app_version()}"),
+                        ft.Text(f"Flet version: {flet.version.flet_version}"),
+                        ft.Text(f"Flutter version: {flet.version.flutter_version}"),
+                        ft.Text(f"Python version: {platform.python_version()}"),
+                    ],
+                ),
+                actions=[
+                    ft.TextButton(
+                        "Close", on_click=lambda _: ft.context.page.pop_dialog()
+                    )
+                ],
+            )
+        )
+
     return ft.AppBar(
         title=ft.Row(
             [
@@ -14,8 +39,15 @@ def AppBar():
         center_title=True,
         # bgcolor=ft.Colors.INVERSE_PRIMARY,
         actions=[
-            ft.Container(
-                padding=10, content=ft.Text(f"Version: {flet.version.flet_version}")
+            ft.PopupMenuButton(
+                icon=ft.Icons.MORE_VERT,
+                tooltip="Menu",
+                items=[
+                    ft.PopupMenuItem(
+                        content="About",
+                        on_click=show_about_dialog,
+                    )
+                ],
             ),
         ],
     )

src/components/diagnostics_view.py

@@ -0,0 +1,50 @@
+import json
+
+import flet as ft
+
+from diagnostics import diagnostics
+
+
+@ft.component
+def DiagnosticsView() -> ft.Control:
+    last_dump, set_last_dump = ft.use_state("No diagnostics dump requested yet.")
+
+    print("Rendering DiagnosticsView")
+
+    def dump_now(_):
+        payload = diagnostics.dump_now(reason="hidden_route_button")
+        set_last_dump(json.dumps(payload, indent=2, default=str))
+
+    return ft.Column(
+        expand=True,
+        controls=[
+            ft.Text("Memory Diagnostics"),
+            ft.Text(
+                "Hidden route for on-demand mem diagnostics. Triggering a dump logs JSON via memdiag logger.",
+                color=ft.Colors.ON_SURFACE_VARIANT,
+            ),
+            ft.Row(
+                controls=[
+                    ft.Button(
+                        "Dump diagnostics now",
+                        icon=ft.Icons.BUG_REPORT,
+                        on_click=dump_now,
+                    ),
+                    ft.OutlinedButton(
+                        "Back to gallery",
+                        icon=ft.Icons.ARROW_BACK,
+                        on_click=lambda _: ft.context.page.go("/"),
+                    ),
+                ]
+            ),
+            ft.TextField(
+                value=last_dump,
+                multiline=True,
+                min_lines=14,
+                max_lines=24,
+                read_only=True,
+                expand=True,
+                text_style=ft.TextStyle(font_family="Roboto Mono", size=12),
+            ),
+        ],
+    )