Fixes http endpoint being overwritten by gRPC address argument in con…

…structor (dapr#621) * Fixes bug of constructor argument being used as http endpoint Signed-off-by: Elena Kolevska <elena@kolevska.com> * Updates tests Signed-off-by: Elena Kolevska <elena@kolevska.com> * Updates the docs explaining how http service invocation should be configured Signed-off-by: Elena Kolevska <elena@kolevska.com> * Update daprdocs/content/en/python-sdk-docs/python-client.md Signed-off-by: Bernd Verst <github@bernd.dev> --------- Signed-off-by: Elena Kolevska <elena@kolevska.com> Signed-off-by: Bernd Verst <github@bernd.dev> Co-authored-by: Bernd Verst <github@bernd.dev> Signed-off-by: Elena Kolevska <elena@kolevska.com> # Conflicts: # dapr/clients/__init__.py # dapr/clients/http/client.py # dapr/clients/http/dapr_invocation_http_client.py # tests/clients/test_http_service_invocation_client.py # tests/clients/test_secure_http_service_invocation_client.py
elena-kolevska · Feb 7, 2024 · 88706d5 · 88706d5
1 parent 5f85f97
commit 88706d5
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Showing 6 changed files with 38 additions and 31 deletions.
diff --git a/dapr/clients/__init__.py b/dapr/clients/__init__.py
@@ -84,9 +84,8 @@ def __init__(
         if invocation_protocol == 'HTTP':
             if http_timeout_seconds is None:
                 http_timeout_seconds = settings.DAPR_HTTP_TIMEOUT_SECONDS
-            self.invocation_client = DaprInvocationHttpClient(
-                headers_callback=headers_callback, timeout=http_timeout_seconds, address=address
-            )
+            self.invocation_client = DaprInvocationHttpClient(headers_callback=headers_callback,
+                                                              timeout=http_timeout_seconds)
         elif invocation_protocol == 'GRPC':
             pass
         else:

diff --git a/dapr/clients/http/client.py b/dapr/clients/http/client.py
@@ -33,14 +33,10 @@
 
 class DaprHttpClient:
     """A Dapr Http API client"""
-
-    def __init__(
-        self,
-        message_serializer: 'Serializer',
-        timeout: Optional[int] = 60,
-        headers_callback: Optional[Callable[[], Dict[str, str]]] = None,
-        address: Optional[str] = None,
-    ):
+    def __init__(self,
+                 message_serializer: 'Serializer',
+                 timeout: Optional[int] = 60,
+                 headers_callback: Optional[Callable[[], Dict[str, str]]] = None):
         """Invokes Dapr over HTTP.
 
         Args:
@@ -51,17 +47,13 @@ def __init__(
         self._timeout = aiohttp.ClientTimeout(total=timeout)
         self._serializer = message_serializer
         self._headers_callback = headers_callback
-        self._address = address
 
     def get_api_url(self) -> str:
-        if self._address:
-            return '{}/{}'.format(self._address, settings.DAPR_API_VERSION)
         if settings.DAPR_HTTP_ENDPOINT:
             return '{}/{}'.format(settings.DAPR_HTTP_ENDPOINT, settings.DAPR_API_VERSION)
-        else:
-            return 'http://{}:{}/{}'.format(
-                settings.DAPR_RUNTIME_HOST, settings.DAPR_HTTP_PORT, settings.DAPR_API_VERSION
-            )
+
+        return 'http://{}:{}/{}'.format(settings.DAPR_RUNTIME_HOST,
+                                        settings.DAPR_HTTP_PORT, settings.DAPR_API_VERSION)
 
     async def send_bytes(
         self,

diff --git a/dapr/clients/http/dapr_invocation_http_client.py b/dapr/clients/http/dapr_invocation_http_client.py
@@ -32,18 +32,16 @@ class DaprInvocationHttpClient:
     """Service Invocation HTTP Client"""
 
     def __init__(
-        self,
-        timeout: int = 60,
-        headers_callback: Optional[Callable[[], Dict[str, str]]] = None,
-        address: Optional[str] = None,
-    ):
+            self,
+            timeout: int = 60,
+            headers_callback: Optional[Callable[[], Dict[str, str]]] = None):
         """Invokes Dapr's API for method invocation over HTTP.
 
         Args:
             timeout (int, optional): Timeout in seconds, defaults to 60.
             headers_callback (lambda: Dict[str, str]], optional): Generates header for each request.
         """
-        self._client = DaprHttpClient(DefaultJSONSerializer(), timeout, headers_callback, address)
+        self._client = DaprHttpClient(DefaultJSONSerializer(), timeout, headers_callback)
 
     async def invoke_method_async(
         self,

diff --git a/daprdocs/content/en/python-sdk-docs/python-client.md b/daprdocs/content/en/python-sdk-docs/python-client.md
@@ -101,6 +101,8 @@ The Python SDK allows you to interface with all of the [Dapr building blocks]({{
 
 ### Invoke a service
 
+The Dapr Python SDK provides a simple API for invoking services via either HTTP or gRPC (deprecated). The protocol can be selected by setting the `DAPR_API_METHOD_INVOCATION_PROTOCOL` environment variable, defaulting to HTTP when unset. GRPC service invocation in Dapr is deprecated and GRPC proxying is recommended as an alternative.
+
 ```python 
 from dapr.clients import DaprClient
 
@@ -113,6 +115,12 @@ with DaprClient() as d:
     resp = d.invoke_method('service-to-invoke', 'method-to-invoke', data='{"id":"100", "FirstName":"Value", "LastName":"Value"}', http_verb='post')
 ```
 
+The base endpoint for HTTP api calls is specified in the `DAPR_HTTP_ENDPOINT` environment variable.
+If this variable is not set, the endpoint value is derived from the `DAPR_RUNTIME_HOST` and `DAPR_HTTP_PORT` variables, whose default values are `127.0.0.1` and `3500` accordingly.
+
+The base endpoint for gRPC calls is the one used for the client initialisation ([explained above](#initialising-the-client)).
+
+
 - For a full guide on service invocation visit [How-To: Invoke a service]({{< ref howto-invoke-discover-services.md >}}).
 - Visit [Python SDK examples](https://github.com/dapr/python-sdk/tree/master/examples/invoke-simple) for code samples and instructions to try out service invocation.
 

diff --git a/tests/clients/test_http_service_invocation_client.py b/tests/clients/test_http_service_invocation_client.py
@@ -59,12 +59,11 @@ def test_get_api_url_default(self):
             client.invocation_client._client.get_api_url(),
         )
 
-    def test_get_api_url_endpoint_as_argument(self):
-        client = DaprClient('http://localhost:5000')
-        self.assertEqual(
-            'http://localhost:5000/{}'.format(settings.DAPR_API_VERSION),
-            client.invocation_client._client.get_api_url(),
-        )
+    @patch.object(settings, "DAPR_HTTP_ENDPOINT", "https://domain1.com:5000")
+    def test_dont_get_api_url_endpoint_as_argument(self):
+        client = DaprClient("http://localhost:5000")
+        self.assertEqual('https://domain1.com:5000/{}'.format(settings.DAPR_API_VERSION),
+                         client.invocation_client._client.get_api_url())
 
     @patch.object(settings, 'DAPR_HTTP_ENDPOINT', 'https://domain1.com:5000')
     def test_get_api_url_endpoint_as_env_variable(self):

diff --git a/tests/clients/test_secure_http_service_invocation_client.py b/tests/clients/test_secure_http_service_invocation_client.py
@@ -15,6 +15,7 @@
 import ssl
 import typing
 from asyncio import TimeoutError
+from unittest.mock import patch
 
 from opentelemetry import trace
 from opentelemetry.sdk.trace import TracerProvider
@@ -27,6 +28,7 @@
 from dapr.conf import settings
 from dapr.proto import common_v1
 
+
 from .certs import CERTIFICATE_CHAIN_PATH
 from .fake_http_server import FakeHttpServer
 from .test_http_service_invocation_client import DaprInvocationHttpClientTests
@@ -48,7 +50,8 @@ def setUp(self):
         self.server.start()
         settings.DAPR_HTTP_PORT = self.server_port
         settings.DAPR_API_METHOD_INVOCATION_PROTOCOL = 'http'
-        self.client = DaprClient(f'https://localhost:{self.server_port}')
+        settings.DAPR_HTTP_ENDPOINT = "https://localhost:{}".format(self.server_port)
+        self.client = DaprClient()
         self.app_id = 'fakeapp'
         self.method_name = 'fakemethod'
         self.invoke_url = f'/v1.0/invoke/{self.app_id}/method/{self.method_name}'
@@ -114,3 +117,11 @@ def test_timeout_exception_thrown_when_timeout_reached(self):
         self.server.set_server_delay(1.5)
         with self.assertRaises(TimeoutError):
             new_client.invoke_method(self.app_id, self.method_name, '')
+
+    @patch.object(settings, "DAPR_HTTP_ENDPOINT", None)
+    def test_get_api_url_default(self):
+        client = DaprClient()
+        self.assertEqual(
+            'http://{}:{}/{}'.format(settings.DAPR_RUNTIME_HOST, settings.DAPR_HTTP_PORT,
+                                     settings.DAPR_API_VERSION),
+            client.invocation_client._client.get_api_url())