[cli] Add config bundle CLI command for remote compilation (#13791)

esphome/__main__.py

@@ -1242,6 +1242,38 @@ def command_clean(args: ArgsProtocol, config: ConfigType) -> int | None:
     return 0
 
 
+def command_bundle(args: ArgsProtocol, config: ConfigType) -> int | None:
+    from esphome.bundle import BUNDLE_EXTENSION, ConfigBundleCreator
+
+    creator = ConfigBundleCreator(config)
+
+    if args.list_only:
+        files = creator.discover_files()
+        for bf in sorted(files, key=lambda f: f.path):
+            safe_print(f"  {bf.path}")
+        _LOGGER.info("Found %d files", len(files))
+        return 0
+
+    result = creator.create_bundle()
+
+    if args.output:
+        output_path = Path(args.output)
+    else:
+        stem = CORE.config_path.stem
+        output_path = CORE.config_dir / f"{stem}{BUNDLE_EXTENSION}"
+
+    output_path.parent.mkdir(parents=True, exist_ok=True)
+    output_path.write_bytes(result.data)
+
+    _LOGGER.info(
+        "Bundle created: %s (%d files, %.1f KB)",
+        output_path,
+        len(result.files),
+        len(result.data) / 1024,
+    )
+    return 0
+
+
 def command_dashboard(args: ArgsProtocol) -> int | None:
     from esphome.dashboard import dashboard
 
@@ -1517,6 +1549,7 @@ POST_CONFIG_ACTIONS = {
     "rename": command_rename,
     "discover": command_discover,
     "analyze-memory": command_analyze_memory,
+    "bundle": command_bundle,
 }
 
 SIMPLE_CONFIG_ACTIONS = [
@@ -1818,6 +1851,24 @@ def parse_args(argv):
         "configuration", help="Your YAML configuration file(s).", nargs="+"
     )
 
+    parser_bundle = subparsers.add_parser(
+        "bundle",
+        help="Create a self-contained config bundle for remote compilation.",
+    )
+    parser_bundle.add_argument(
+        "configuration", help="Your YAML configuration file(s).", nargs="+"
+    )
+    parser_bundle.add_argument(
+        "-o",
+        "--output",
+        help="Output path for the bundle archive.",
+    )
+    parser_bundle.add_argument(
+        "--list-only",
+        help="List discovered files without creating the archive.",
+        action="store_true",
+    )
+
     # Keep backward compatibility with the old command line format of
     # esphome <config> <command>.
     #
@@ -1896,6 +1947,16 @@ def run_esphome(argv):
         _LOGGER.warning("Skipping secrets file %s", conf_path)
         return 0
 
+    # Bundle support: if the configuration is a .esphomebundle, extract it
+    # and rewrite conf_path to the extracted YAML config.
+    from esphome.bundle import is_bundle_path, prepare_bundle_for_compile
+
+    if is_bundle_path(conf_path):
+        _LOGGER.info("Extracting config bundle %s...", conf_path)
+        conf_path = prepare_bundle_for_compile(conf_path)
+        # Update the argument so downstream code sees the extracted path
+        args.configuration[0] = str(conf_path)
+
     CORE.config_path = conf_path
     CORE.dashboard = args.dashboard
 

esphome/components/wifi/wpa2_eap.py

@@ -71,9 +71,11 @@ def _validate_load_certificate(value):
 
 
 def validate_certificate(value):
+    # _validate_load_certificate already calls cv.file_() internally,
+    # but returns the parsed certificate object.  We re-call cv.file_()
+    # to get the resolved path string that the bundle walker can discover.
     _validate_load_certificate(value)
-    # Validation result should be the path, not the loaded certificate
-    return value
+    return str(cv.file_(value))
 
 
 def _validate_load_private_key(key, cert_pw):

esphome/yaml_util.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
-from collections.abc import Callable
-from contextlib import suppress
+from collections.abc import Callable, Generator
+from contextlib import contextmanager, suppress
 import functools
 import inspect
 from io import BytesIO, TextIOBase, TextIOWrapper
@@ -44,6 +44,27 @@ _LOGGER = logging.getLogger(__name__)
 SECRET_YAML = "secrets.yaml"
 _SECRET_CACHE = {}
 _SECRET_VALUES = {}
+# Not thread-safe — config processing is single-threaded today.
+_load_listeners: list[Callable[[Path], None]] = []
+
+
+@contextmanager
+def track_yaml_loads() -> Generator[list[Path]]:
+    """Context manager that records every file loaded by the YAML loader.
+
+    Yields a list that is populated with resolved Path objects for every
+    file loaded through ``_load_yaml_internal`` while the context is active.
+    """
+    loaded: list[Path] = []
+
+    def _on_load(fname: Path) -> None:
+        loaded.append(Path(fname).resolve())
+
+    _load_listeners.append(_on_load)
+    try:
+        yield loaded
+    finally:
+        _load_listeners.remove(_on_load)
 
 
 class ESPHomeDataBase:
@@ -466,6 +487,8 @@ def load_yaml(fname: Path, clear_secrets: bool = True) -> Any:
 
 def _load_yaml_internal(fname: Path) -> Any:
     """Load a YAML file."""
+    for listener in _load_listeners:
+        listener(fname)
     try:
         with fname.open(encoding="utf-8") as f_handle:
             return parse_yaml(fname, f_handle)
@@ -473,10 +496,10 @@ def _load_yaml_internal(fname: Path) -> Any:
         raise EsphomeError(f"Error reading file {fname}: {err}") from err
 
 
-def parse_yaml(
-    file_name: Path, file_handle: TextIOWrapper, yaml_loader=_load_yaml_internal
-) -> Any:
+def parse_yaml(file_name: Path, file_handle: TextIOWrapper, yaml_loader=None) -> Any:
     """Parse a YAML file."""
+    if yaml_loader is None:
+        yaml_loader = _load_yaml_internal
     try:
         return _load_yaml_internal_with_type(
             ESPHomeLoader, file_name, file_handle, yaml_loader

tests/unit_tests/fixtures/bundle/assets/certs/ca_cert.pem

@@ -0,0 +1,18 @@
+-----BEGIN CERTIFICATE-----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+DTlRl+wF2k7Ip8CNnyZfCC+1SVQZpUt1mVNz8BhIZZ9/a830wCILNQQrVKkSeNBk
+SEc1qTt4mIhQZ+M422qAswluv4fz/FW1f4oB9KhCpzUCANjmyERnqTnImjnJu8h0
+jbPNnNsN+G+Roju8UD/7atWYfAUmDjHx72Ci/5G9SzoM5fhgxxu43XYd5RW5wBzt
+j4KdKdYlDtOL62mRPKWd40uGnJcieUjisU7noRn0ErMgbUlhLdbXT9X7aNborZcu
+x6I=
+-----END CERTIFICATE-----

tests/unit_tests/fixtures/bundle/assets/certs/client_cert.pem

@@ -0,0 +1,18 @@
+-----BEGIN CERTIFICATE-----
+MIICzjCCAbagAwIBAgIUW3BzjtekVgMj12/oeXawSswGyXMwDQYJKoZIhvcNAQEL
+BQAwITEfMB0GA1UEAwwWRVNQSG9tZSBCdW5kbGUgVGVzdCBDQTAeFw0yNjAyMDYx
+MzMxMTZaFw0yNzAyMDYxMzMxMTZaMCExHzAdBgNVBAMMFkVTUEhvbWUgQnVuZGxl
+IFRlc3QgQ0EwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDG62vBFkGn
+hEu54gh2A7b1ZwesVadZ6u0iaVO7GSWiI0o4nb6xv7ULZbGrgsKNIO6qCV4VSR3p
+BfMhF5dFy8kkMzA8dKZMk16tygzocdNum2QQ8BHyIsATL7SGZ33si9Alp30gXv6h
+XSlEKYDKHFavkDhWPFNa5+oeHbMS/MxjpOUXIpq32VaFpJr427d9Y9wGjuK8B7Gp
+CI5Ub1g2dpC9xSHqQKD3JZokmtc70+mD74AcNWbyxWp0bkW9wOfNJJnAoiwhJxQ8
+yfE37UsUIVc8014NhdhU1K/S0iQuOKfGX1L/GAshv8syQIcDfzJuJdX+5E/leAYD
+UEKqRkcLT+D5AgMBAAEwDQYJKoZIhvcNAQELBQADggEBAF1HpJ6d+W5WrzOQrGej
+41pxCDeJ9tSiSj/KtvJfjEVIpg0hMRTY7nSL7OAg9KGESfx4u1jMwVnyOv34br5B
+DTlRl+wF2k7Ip8CNnyZfCC+1SVQZpUt1mVNz8BhIZZ9/a830wCILNQQrVKkSeNBk
+SEc1qTt4mIhQZ+M422qAswluv4fz/FW1f4oB9KhCpzUCANjmyERnqTnImjnJu8h0
+jbPNnNsN+G+Roju8UD/7atWYfAUmDjHx72Ci/5G9SzoM5fhgxxu43XYd5RW5wBzt
+j4KdKdYlDtOL62mRPKWd40uGnJcieUjisU7noRn0ErMgbUlhLdbXT9X7aNborZcu
+x6I=
+-----END CERTIFICATE-----

tests/unit_tests/fixtures/bundle/assets/certs/client_key.pem

@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIEowIBAAKCAQEAxutrwRZBp4RLueIIdgO29WcHrFWnWertImlTuxkloiNKOJ2+
+sb+1C2Wxq4LCjSDuqgleFUkd6QXzIReXRcvJJDMwPHSmTJNercoM6HHTbptkEPAR
+8iLAEy+0hmd97IvQJad9IF7+oV0pRCmAyhxWr5A4VjxTWufqHh2zEvzMY6TlFyKa
+t9lWhaSa+Nu3fWPcBo7ivAexqQiOVG9YNnaQvcUh6kCg9yWaJJrXO9Ppg++AHDVm
+8sVqdG5FvcDnzSSZwKIsIScUPMnxN+1LFCFXPNNeDYXYVNSv0tIkLjinxl9S/xgL
+Ib/LMkCHA38ybiXV/uRP5XgGA1BCqkZHC0/g+QIDAQABAoIBAEpsFwcJNCwf95MG
+qcK5lhCPaRQFgdTG68ylmoGUIXvddy3ies+W2X33oLb5958ElLaCRbRyBCJEKxgU
+8vBWk50bF69uty9MLa6YuyaWO5QUyCX8I8KzVKh4/zIP81F2Z7xGwy5CzEKED+Xk
+Hz6+xoHt094TuN34iaOV2gM/GJsok4Wp/lzsuT3X6i3Nad9YGrV2yL/wv5c542bw
+vrFDtYQ/+ADZZPW4+xK0ShiarSqV3iXB2cEjc4JX7yLX1hB4LY8VHRzl+Byjdl0/
+lheiIesl5htl82SFxquZDimDsbilTm7TLW2bbm3b3/oC7DchTx6COBjp90VJqk3R
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+5JQ0PTazhGUOcthvVAfOqZsFWZ4f+v6tk0UD4pB3chSdwXcUQyjFeorVLlSsMFJl
+R4jmNQKBgG38YFR2bqIc7jJItr+34POXdJ4te8Dm1jJHbo8xXsnjVSaxjc5PGs3p
+OuJpwuMwzEuFEnE7XLkQxTJw54OBLMmDgK0XUOPDq6eLzrKkW5NlpejqaQV9Piyo
+q1kqbJan20jfJQUGTcX7FXHMUThzqJltHILR1GTW6I9z4k8xdsDY
+-----END RSA PRIVATE KEY-----

tests/unit_tests/fixtures/bundle/assets/web/custom.css

@@ -0,0 +1,2 @@
+/* Dummy CSS for bundle testing */
+body { color: red; }

tests/unit_tests/fixtures/bundle/assets/web/custom.js

@@ -0,0 +1,2 @@
+// Dummy JS for bundle testing
+console.log("test");

tests/unit_tests/fixtures/bundle/bundle_test.yaml

@@ -0,0 +1,60 @@
+esphome:
+  name: bundle-test
+  includes:
+    - includes/custom_sensor.h
+
+esp32:
+  board: esp32dev
+  framework:
+    type: esp-idf
+
+logger:
+  <<: !include common/base.yaml
+
+wifi:
+  ssid: !secret wifi_ssid
+  password: !secret wifi_password
+
+api:
+
+ota:
+  - platform: esphome
+    password: !secret ota_password
+
+web_server:
+  port: 80
+  css_include: assets/web/custom.css
+  js_include: assets/web/custom.js
+
+i2c:
+  sda: GPIO21
+  scl: GPIO22
+
+font:
+  - id: test_font
+    file: assets/fonts/test_font.ttf
+    size: 16
+
+image:
+  - id: test_image
+    file: assets/images/logo.png
+    type: BINARY
+    resize: 16x16
+
+animation:
+  - id: test_animation
+    file: assets/images/animation.gif
+    type: BINARY
+    resize: 16x16
+
+display:
+  - platform: ssd1306_i2c
+    model: SSD1306_128X64
+    address: 0x3C
+    lambda: |-
+      it.image(0, 0, id(test_image));
+
+external_components:
+  - source:
+      type: local
+      path: local_components

tests/unit_tests/fixtures/bundle/common/base.yaml

@@ -0,0 +1 @@
+level: DEBUG

tests/unit_tests/fixtures/bundle/includes/custom_sensor.h

@@ -0,0 +1,3 @@
+// Dummy custom sensor header for bundle testing
+#pragma once
+#include "esphome/core/component.h"

tests/unit_tests/fixtures/bundle/local_components/my_component/__init__.py

@@ -0,0 +1 @@
+# Dummy local external component for bundle testing

tests/unit_tests/fixtures/bundle/local_components/my_component/my_component.h

@@ -0,0 +1,2 @@
+// Dummy component header for bundle testing
+#pragma once

tests/unit_tests/fixtures/bundle/secrets.yaml

@@ -0,0 +1,4 @@
+wifi_ssid: "TestNetwork"
+wifi_password: "TestPassword123"
+api_key: "unused_secret_should_not_appear"
+ota_password: "ota_test_password"

tests/unit_tests/test_main.py

@@ -24,6 +24,7 @@ from esphome.__main__ import (
     _make_crystal_freq_callback,
     choose_upload_log_host,
     command_analyze_memory,
+    command_bundle,
     command_clean_all,
     command_rename,
     command_update_all,
@@ -47,6 +48,7 @@ from esphome.__main__ import (
     upload_using_picotool,
     upload_using_platformio,
 )
+from esphome.bundle import BUNDLE_EXTENSION, BundleFile, BundleResult
 from esphome.components.esp32 import KEY_ESP32, KEY_VARIANT, VARIANT_ESP32
 from esphome.const import (
     CONF_API,
@@ -1101,6 +1103,8 @@ class MockArgs:
     name: str | None = None
     dashboard: bool = False
     reset: bool = False
+    list_only: bool = False
+    output: str | None = None
 
 
 def test_upload_program_serial_esp32(
@@ -3765,6 +3769,198 @@ esp32:
     assert "secrets.yaml" not in summary_section
 
 
+# --- command_bundle tests ---
+
+
+def test_command_bundle_list_only(
+    tmp_path: Path,
+    capsys: CaptureFixture[str],
+) -> None:
+    """Test command_bundle with --list-only prints files and returns 0."""
+    mock_files = [
+        BundleFile(path="device.yaml", source=tmp_path / "device.yaml"),
+        BundleFile(path="secrets.yaml", source=tmp_path / "secrets.yaml"),
+        BundleFile(path="common/base.yaml", source=tmp_path / "common" / "base.yaml"),
+    ]
+
+    args = MockArgs(list_only=True)
+    config: dict[str, Any] = {}
+
+    mock_creator = MagicMock()
+    mock_creator.discover_files.return_value = mock_files
+
+    with patch("esphome.bundle.ConfigBundleCreator", return_value=mock_creator):
+        result = command_bundle(args, config)
+
+    assert result == 0
+    captured = capsys.readouterr()
+    # Files should be printed in sorted order
+    assert "common/base.yaml" in captured.out
+    assert "device.yaml" in captured.out
+    assert "secrets.yaml" in captured.out
+
+
+def test_command_bundle_list_only_empty(
+    tmp_path: Path,
+    capsys: CaptureFixture[str],
+) -> None:
+    """Test command_bundle --list-only with no files discovered."""
+    args = MockArgs(list_only=True)
+    config: dict[str, Any] = {}
+
+    mock_creator = MagicMock()
+    mock_creator.discover_files.return_value = []
+
+    with patch("esphome.bundle.ConfigBundleCreator", return_value=mock_creator):
+        result = command_bundle(args, config)
+
+    assert result == 0
+
+
+def test_command_bundle_creates_archive(tmp_path: Path) -> None:
+    """Test command_bundle creates archive at default output path."""
+    CORE.config_path = tmp_path / "mydevice.yaml"
+
+    mock_result = BundleResult(
+        data=b"fake-tar-gz-data",
+        manifest={"manifest_version": 1},
+        files=[BundleFile(path="mydevice.yaml", source=tmp_path / "mydevice.yaml")],
+    )
+
+    args = MockArgs()
+    config: dict[str, Any] = {}
+
+    mock_creator = MagicMock()
+    mock_creator.create_bundle.return_value = mock_result
+
+    with patch("esphome.bundle.ConfigBundleCreator", return_value=mock_creator):
+        result = command_bundle(args, config)
+
+    assert result == 0
+    output_path = tmp_path / f"mydevice{BUNDLE_EXTENSION}"
+    assert output_path.exists()
+    assert output_path.read_bytes() == b"fake-tar-gz-data"
+
+
+def test_command_bundle_custom_output(tmp_path: Path) -> None:
+    """Test command_bundle with -o custom output path."""
+    custom_output = tmp_path / "output" / "custom.esphomebundle.tar.gz"
+    mock_result = BundleResult(
+        data=b"custom-output-data",
+        manifest={"manifest_version": 1},
+        files=[BundleFile(path="mydevice.yaml", source=tmp_path / "mydevice.yaml")],
+    )
+
+    args = MockArgs(output=str(custom_output))
+    config: dict[str, Any] = {}
+
+    mock_creator = MagicMock()
+    mock_creator.create_bundle.return_value = mock_result
+
+    with patch("esphome.bundle.ConfigBundleCreator", return_value=mock_creator):
+        result = command_bundle(args, config)
+
+    assert result == 0
+    assert custom_output.exists()
+    assert custom_output.read_bytes() == b"custom-output-data"
+
+
+def test_command_bundle_creates_parent_dirs(tmp_path: Path) -> None:
+    """Test command_bundle creates parent directories for output path."""
+    nested_output = tmp_path / "deep" / "nested" / "dir" / "out.tar.gz"
+    mock_result = BundleResult(
+        data=b"data",
+        manifest={"manifest_version": 1},
+        files=[BundleFile(path="mydevice.yaml", source=tmp_path / "mydevice.yaml")],
+    )
+
+    args = MockArgs(output=str(nested_output))
+    config: dict[str, Any] = {}
+
+    mock_creator = MagicMock()
+    mock_creator.create_bundle.return_value = mock_result
+
+    with patch("esphome.bundle.ConfigBundleCreator", return_value=mock_creator):
+        result = command_bundle(args, config)
+
+    assert result == 0
+    assert nested_output.exists()
+
+
+def test_command_bundle_logs_info(
+    tmp_path: Path,
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Test command_bundle logs bundle creation info."""
+    CORE.config_path = tmp_path / "mydevice.yaml"
+
+    mock_result = BundleResult(
+        data=b"x" * 2048,
+        manifest={"manifest_version": 1},
+        files=[
+            BundleFile(path="mydevice.yaml", source=tmp_path / "mydevice.yaml"),
+            BundleFile(path="secrets.yaml", source=tmp_path / "secrets.yaml"),
+        ],
+    )
+
+    args = MockArgs()
+    config: dict[str, Any] = {}
+
+    mock_creator = MagicMock()
+    mock_creator.create_bundle.return_value = mock_result
+
+    with (
+        patch("esphome.bundle.ConfigBundleCreator", return_value=mock_creator),
+        caplog.at_level(logging.INFO),
+    ):
+        result = command_bundle(args, config)
+
+    assert result == 0
+    assert "Bundle created" in caplog.text
+    assert "2 files" in caplog.text
+    assert "2.0 KB" in caplog.text
+
+
+def test_run_esphome_bundle_detection(tmp_path: Path) -> None:
+    """Test run_esphome detects .esphomebundle.tar.gz and extracts it."""
+    bundle_path = tmp_path / f"device{BUNDLE_EXTENSION}"
+    bundle_path.write_bytes(b"fake-bundle")
+
+    extracted_yaml = tmp_path / "extracted" / "device.yaml"
+
+    with (
+        patch("esphome.bundle.is_bundle_path", return_value=True) as mock_is_bundle,
+        patch(
+            "esphome.bundle.prepare_bundle_for_compile",
+            return_value=extracted_yaml,
+        ) as mock_prepare,
+        patch("esphome.__main__.read_config", return_value=None),
+    ):
+        result = run_esphome(["esphome", "compile", str(bundle_path)])
+
+    mock_is_bundle.assert_called_once()
+    mock_prepare.assert_called_once_with(bundle_path)
+    # read_config returns None → exit code 2
+    assert result == 2
+
+
+def test_run_esphome_non_bundle_skips_extraction(tmp_path: Path) -> None:
+    """Test run_esphome does not extract for regular .yaml files."""
+    yaml_file = tmp_path / "device.yaml"
+    yaml_file.write_text("esphome:\n  name: test\n")
+
+    with (
+        patch("esphome.bundle.is_bundle_path", return_value=False) as mock_is_bundle,
+        patch("esphome.bundle.prepare_bundle_for_compile") as mock_prepare,
+        patch("esphome.__main__.read_config", return_value=None),
+    ):
+        result = run_esphome(["esphome", "compile", str(yaml_file)])
+
+    mock_is_bundle.assert_called_once()
+    mock_prepare.assert_not_called()
+    assert result == 2
+
+
 def test_get_configured_xtal_freq_reads_sdkconfig(tmp_path: Path) -> None:
     """Test reading XTAL_FREQ from sdkconfig."""
     CORE.name = "test-device"

tests/unit_tests/test_yaml_util.py

@@ -323,6 +323,60 @@ def test_dump_sort_keys() -> None:
     assert sorted_dump.index("a_key:") < sorted_dump.index("z_key:")
 
 
+# ---------------------------------------------------------------------------
+# track_yaml_loads
+# ---------------------------------------------------------------------------
+
+
+def test_track_yaml_loads_records_files(tmp_path: Path) -> None:
+    """track_yaml_loads records every file loaded inside the context."""
+    yaml_file = tmp_path / "test.yaml"
+    yaml_file.write_text("key: value\n")
+
+    with yaml_util.track_yaml_loads() as loaded:
+        yaml_util.load_yaml(yaml_file)
+
+    assert len(loaded) == 1
+    assert loaded[0] == yaml_file.resolve()
+
+
+def test_track_yaml_loads_records_includes(tmp_path: Path) -> None:
+    """track_yaml_loads records nested !include files."""
+    inc = tmp_path / "included.yaml"
+    inc.write_text("included_key: 42\n")
+    main = tmp_path / "main.yaml"
+    main.write_text("child: !include included.yaml\n")
+
+    with yaml_util.track_yaml_loads() as loaded:
+        yaml_util.load_yaml(main)
+
+    resolved = [p.name for p in loaded]
+    assert "main.yaml" in resolved
+    assert "included.yaml" in resolved
+
+
+def test_track_yaml_loads_empty_outside_context(tmp_path: Path) -> None:
+    """Files loaded outside the context are not recorded."""
+    yaml_file = tmp_path / "test.yaml"
+    yaml_file.write_text("key: value\n")
+
+    with yaml_util.track_yaml_loads() as loaded:
+        pass  # load nothing inside
+
+    yaml_util.load_yaml(yaml_file)
+    assert loaded == []
+
+
+def test_track_yaml_loads_cleanup_on_exception(tmp_path: Path) -> None:
+    """Listener is removed even if the body raises."""
+    before = len(yaml_util._load_listeners)
+
+    with pytest.raises(RuntimeError), yaml_util.track_yaml_loads():
+        raise RuntimeError("boom")
+
+    assert len(yaml_util._load_listeners) == before
+
+
 @pytest.mark.parametrize(
     "data",
     [