fix: Update function directory in load request to use /home/site/wwwroot (Azure#1480)

* Updating function dir in metadata resp

* Updating test imports

* Removed path hardcoding

* Added UT

* Revert FileNotFound error

* Added Otel flag

* Linting fix

* Fixed index func

Author: gavin-aguiar

azure_functions_worker/constants.py

@@ -80,3 +80,6 @@
 
 # Base extension supported Python minor version
 BASE_EXT_SUPPORTED_PY_MINOR_VERSION = 8
+
+PYTHON_ENABLE_OPENTELEMETRY = "PYTHON_ENABLE_OPENTELEMETRY"
+PYTHON_ENABLE_OPENTELEMETRY_DEFAULT = True

azure_functions_worker/dispatcher.py

@@ -30,7 +30,9 @@
                         PYTHON_SCRIPT_FILE_NAME,
                         PYTHON_SCRIPT_FILE_NAME_DEFAULT,
                         PYTHON_LANGUAGE_RUNTIME, PYTHON_ENABLE_INIT_INDEXING,
-                        METADATA_PROPERTIES_WORKER_INDEXED)
+                        METADATA_PROPERTIES_WORKER_INDEXED,
+                        PYTHON_ENABLE_OPENTELEMETRY,
+                        PYTHON_ENABLE_OPENTELEMETRY_DEFAULT)
 from .extension import ExtensionManager
 from .http_v2 import http_coordinator, initialize_http_server, HttpV2Registry, \
     sync_http_request, HttpServerInitError
@@ -318,10 +320,12 @@ async def _handle__worker_init_request(self, request):
             constants.SHARED_MEMORY_DATA_TRANSFER: _TRUE,
         }
 
-        self.update_opentelemetry_status()
+        if get_app_setting(setting=PYTHON_ENABLE_OPENTELEMETRY,
+                           default_value=PYTHON_ENABLE_OPENTELEMETRY_DEFAULT):
+            self.update_opentelemetry_status()
 
-        if self._otel_libs_available:
-            capabilities[constants.WORKER_OPEN_TELEMETRY_ENABLED] = _TRUE
+            if self._otel_libs_available:
+                capabilities[constants.WORKER_OPEN_TELEMETRY_ENABLED] = _TRUE
 
         if DependencyManager.should_load_cx_dependencies():
             DependencyManager.prioritize_customer_dependencies()
@@ -383,8 +387,10 @@ def load_function_metadata(self, function_app_directory, caller_info):
         function_path = os.path.join(function_app_directory,
                                      script_file_name)
 
+        # For V1, the function path will not exist and
+        # return None.
         self._function_metadata_result = (
-            self.index_functions(function_path)) \
+            self.index_functions(function_path, function_app_directory)) \
             if os.path.exists(function_path) else None
 
     async def _handle__functions_metadata_request(self, request):
@@ -439,8 +445,9 @@ async def _handle__function_load_request(self, request):
 
         logger.info(
             'Received WorkerLoadRequest, request ID %s, function_id: %s,'
-            'function_name: %s',
-            self.request_id, function_id, function_name)
+            'function_name: %s, function_app_directory : %s',
+            self.request_id, function_id, function_name,
+            function_app_directory)
 
         programming_model = "V2"
         try:
@@ -705,9 +712,14 @@ async def _handle__function_environment_reload_request(self, request):
             bindings.load_binding_registry()
 
             capabilities = {}
-            self.update_opentelemetry_status()
-            if self._otel_libs_available:
-                capabilities[constants.WORKER_OPEN_TELEMETRY_ENABLED] = _TRUE
+            if get_app_setting(
+                    setting=PYTHON_ENABLE_OPENTELEMETRY,
+                    default_value=PYTHON_ENABLE_OPENTELEMETRY_DEFAULT):
+                self.update_opentelemetry_status()
+
+                if self._otel_libs_available:
+                    capabilities[constants.WORKER_OPEN_TELEMETRY_ENABLED] = (
+                        _TRUE)
 
             if is_envvar_true(PYTHON_ENABLE_INIT_INDEXING):
                 try:
@@ -749,7 +761,7 @@ async def _handle__function_environment_reload_request(self, request):
                 request_id=self.request_id,
                 function_environment_reload_response=failure_response)
 
-    def index_functions(self, function_path: str):
+    def index_functions(self, function_path: str, function_dir: str):
         indexed_functions = loader.index_function_app(function_path)
         logger.info(
             "Indexed function app and found %s functions",
@@ -760,7 +772,8 @@ def index_functions(self, function_path: str):
             fx_metadata_results, fx_bindings_logs = (
                 loader.process_indexed_function(
                     self._functions,
-                    indexed_functions))
+                    indexed_functions,
+                    function_dir))
 
             indexed_function_logs: List[str] = []
             indexed_function_bindings_logs = []

azure_functions_worker/loader.py

@@ -121,7 +121,7 @@ def build_variable_interval_retry(retry, max_retry_count, retry_strategy):
 
 
 def process_indexed_function(functions_registry: functions.Registry,
-                             indexed_functions):
+                             indexed_functions, function_dir):
     """
     fx_metadata_results is a list of the RpcFunctionMetadata for
     all the functions in the particular app.
@@ -150,7 +150,7 @@ def process_indexed_function(functions_registry: functions.Registry,
             name=function_info.name,
             function_id=function_info.function_id,
             managed_dependency_enabled=False,  # only enabled for PowerShell
-            directory=function_info.directory,
+            directory=function_dir,
             script_file=indexed_function.function_script_file,
             entry_point=function_info.name,
             is_proxy=False,  # not supported in V4

tests/endtoend/blueprint_functions/functions_in_blueprint_only/blueprint.py

@@ -1,4 +1,6 @@
 import logging
+import time
+from datetime import datetime
 
 import azure.functions as func
 
@@ -29,3 +31,11 @@ def default_template(req: func.HttpRequest) -> func.HttpResponse:
             " personalized response.",
             status_code=200
         )
+
+
+@bp.route(route="http_func")
+def http_func(req: func.HttpRequest) -> func.HttpResponse:
+    time.sleep(1)
+
+    current_time = datetime.now().strftime("%H:%M:%S")
+    return func.HttpResponse(f"{current_time}")

tests/endtoend/test_worker_process_count_functions.py

@@ -68,3 +68,11 @@ class TestWorkerProcessCountStein(TestWorkerProcessCount):
     def get_script_dir(cls):
         return testutils.E2E_TESTS_FOLDER / 'http_functions' /\
                                             'http_functions_stein'
+
+
+class TestWorkerProcessCountWithBlueprintStein(TestWorkerProcessCount):
+
+    @classmethod
+    def get_script_dir(cls):
+        return testutils.E2E_TESTS_FOLDER / 'blueprint_functions' /\
+                                            'functions_in_blueprint_only'

tests/unittests/test_dispatcher.py

@@ -21,7 +21,6 @@
 from tests.utils import testutils
 from tests.utils.testutils import UNIT_TESTS_ROOT
 
-
 SysVersionInfo = col.namedtuple("VersionInfo", ["major", "minor", "micro",
                                                 "releaselevel", "serial"])
 DISPATCHER_FUNCTIONS_DIR = testutils.UNIT_TESTS_FOLDER / 'dispatcher_functions'