Make the data model target configurable. (#41133)

* Make the data model target configurable.

This allows integration of the SDK directly in existing
GN build systems.

* Remove the extra camera comntroller utils dependency ... it made no
sense.

* Fix chef as well

* Make BL build for the contact sensor app work.

* Re-update the targets: add all tests and fix other targets.

* Fix args for BL

* Update comment and add another target. These are bad!

Author: andy31415

examples/camera-controller/BUILD.gn

@@ -111,7 +111,6 @@ static_library("camera-controller-utils") {
 
   public_deps = [
     "${chip_root}/examples/common/tracing:commandline",
-    "${chip_root}/src/app:required-privileges",
     "${chip_root}/src/app/server",
     "${chip_root}/src/app/tests/suites/commands/interaction_model",
     "${chip_root}/src/controller/data_model",

examples/chef/chef.py

@@ -892,6 +892,7 @@ def main() -> int:
                  f'"CHIP_DEVICE_CONFIG_DEVICE_PRODUCT_ID={options.pid}", '
                  f'"CONFIG_ENABLE_PW_RPC={int(options.do_rpc)}", '
                  f'"CHIP_DEVICE_CONFIG_DEVICE_PRODUCT_NAME=\\"{str(options.pname)}\\""]'),
+                'chip_app_data_model_target = "//:chef-data-model"',
             ])
 
             uname_resp = shell.run_cmd("uname -m", return_cmd_output=True)

examples/contact-sensor-app/bouffalolab/bl702l/args.gni

@@ -27,3 +27,4 @@ chip_error_logging = true
 chip_enable_icd_server = true
 chip_enable_icd_lit = true
 chip_enable_icd_dsls = true
+chip_app_data_model_target = "//:bouffalolab_contact_sensor"

examples/lighting-app/bouffalolab/bl602/args.gni

@@ -32,3 +32,4 @@ pw_build_LINK_DEPS = [
   "$dir_pw_assert:impl",
   "$dir_pw_log:impl",
 ]
+chip_app_data_model_target = "//:bouffalolab-lighting"

examples/lighting-app/bouffalolab/bl616/args.gni

@@ -23,3 +23,4 @@ chip_detail_logging = false
 
 # use -Os instead of -Og
 is_debug = false
+chip_app_data_model_target = "//:bouffalolab-lighting"

examples/lighting-app/bouffalolab/bl702/args.gni

@@ -32,3 +32,4 @@ pw_build_LINK_DEPS = [
   "$dir_pw_assert:impl",
   "$dir_pw_log:impl",
 ]
+chip_app_data_model_target = "//:bouffalolab-lighting"

examples/lighting-app/bouffalolab/bl702l/args.gni

@@ -32,3 +32,5 @@ pw_build_LINK_DEPS = [
   "$dir_pw_assert:impl",
   "$dir_pw_log:impl",
 ]
+
+chip_app_data_model_target = "//:bouffalolab-lighting"

src/app/BUILD.gn

@@ -56,6 +56,10 @@ declare_args() {
   chip_im_static_global_interaction_model_engine =
       current_os != "linux" && current_os != "mac" && current_os != "ios" &&
       current_os != "android"
+
+  # Set for integration into build systems: defines visibility
+  # for files that chip_data_model requires.
+  chip_app_data_model_target = "${chip_root}/examples/*"
 }
 
 buildconfig_header("app_buildconfig") {
@@ -350,15 +354,26 @@ source_set("required-privileges") {
   # is part of application code, the visibility is broad. However generally DO NOT USE THIS
   # unless you are creating a new CodegenDataModelProvider based item
   visibility = [
-    "//:*",  # Top-level apps (e.g. //:bouffalolab-lighting does this)
-    "${chip_root}/examples/*",
-    "${chip_root}/src/app/util/*",
+    # Test data models: mock models for testing
+    # TODO: Some of these are questionable as they would not work as part of a monolith
+    #       (single app) test build: in particular the energy management bits seem wrong
+    "${chip_root}/examples/common/server-cluster-shim:mock_data_model_with_shim",
+    "${chip_root}/examples/energy-management-app/energy-management-common",
+    "${chip_root}/src/app/util/mock/*",
+    "${chip_root}/src/data-model-providers/codegen/tests/*",
+
+    # Controller data models:
+    #   linked by controllers only, never by applications
     "${chip_root}/src/controller/data_model",
     "${chip_root}/src/controller/java:jni",
     "${chip_root}/src/controller/python:ChipDeviceCtrl",
-    "${chip_root}/src/data-model-providers/codegen/*",
   ]
 
+  # Application integration: `chip_data_model` target should be set here
+  if (chip_app_data_model_target != "") {
+    visibility += [ chip_app_data_model_target ]
+  }
+
   # We still have some strong coupling in this case
   # Eventually dynamic server should be replaced with code-driven and not try
   # to fake out ember codegen