Revert "Add --plugins option to uploader (#3377)"

This reverts commit 343456b.

Test Plan:
Running `bazel run //tensorboard -- dev list` now works. Previously, it
failed with:

```
  File ".../tensorboard/uploader/uploader_main.py", line 750, in _get_server_info
    server_info = server_info_lib.fetch_server_info(origin, flags.plugins)
AttributeError: 'Namespace' object has no attribute 'plugins'
```

wchargin-branch: revert-uploader-plugins-flag

Author: wchargin

tensorboard/uploader/proto/server_info.proto

@@ -8,37 +8,31 @@ package tensorboard.service;
 message ServerInfoRequest {
   // Client-side TensorBoard version, per `tensorboard.version.VERSION`.
   string version = 1;
-  // Information about the plugins for which the client wishes to upload data.
-  //
-  // If specified then the list of plugins will be confirmed by the server and
-  // echoed in the PluginControl.allowed_plugins field. Otherwise the server
-  // will return the default set of plugins it supports.
-  //
-  // If one of the plugins is not supported by the server then it will respond
-  // with compatibility verdict VERDICT_ERROR.
-  PluginSpecification plugin_specification = 2;
 }
 
 message ServerInfoResponse {
-  // Primary bottom-line: is the server compatible with the client, can it
-  // serve its request, and is there anything that the end user should be
-  // aware of?
+  // Primary bottom-line: is the server compatible with the client, and is
+  // there anything that the end user should be aware of?
   Compatibility compatibility = 1;
   // Identifier for a gRPC server providing the `TensorBoardExporterService` and
   // `TensorBoardWriterService` services (under the `tensorboard.service` proto
   // package).
   ApiServer api_server = 2;
   // How to generate URLs to experiment pages.
   ExperimentUrlFormat url_format = 3;
-  // Information about the plugins for which data should be uploaded.
+  // For which plugins should we upload data? (Even if the uploader is
+  // structurally capable of uploading data from many plugins, we only actually
+  // upload data that can be currently displayed in TensorBoard.dev. Otherwise,
+  // users may be surprised to see that experiments that they uploaded a while
+  // ago and have since shared or published now have extra information that
+  // they didn't realize had been uploaded.)
   //
-  // If PluginSpecification.requested_plugins is specified then
-  // that list of plugins will be confirmed by the server and echoed in the
-  // the response. Otherwise the server will return the default set of
-  // plugins it supports.
+  // The client may always choose to upload less data than is permitted by this
+  // field: e.g., if the end user specifies not to upload data for a given
+  // plugin, or the client does not yet support uploading some kind of data.
   //
-  // The client should only upload data for the plugins in the response even
-  // if it is capable of uploading more data.
+  // If this field is omitted, there are no upfront restrictions on what the
+  // client may send.
   PluginControl plugin_control = 4;
 }
 
@@ -80,15 +74,8 @@ message ExperimentUrlFormat {
   string id_placeholder = 2;
 }
 
-message PluginSpecification {
-  // Plugins for which the client wishes to upload data. These are plugin names
-  // as stored in the the `SummaryMetadata.plugin_data.plugin_name` proto
-  // field.
-  repeated string upload_plugins = 2;
-}
-
 message PluginControl {
-  // Plugins for which data should be uploaded. These are plugin names as
+  // Only send data from plugins with these names. These are plugin names as
   // stored in the the `SummaryMetadata.plugin_data.plugin_name` proto field.
   repeated string allowed_plugins = 1;
 }

tensorboard/uploader/server_info.py

@@ -21,7 +21,6 @@
 from google.protobuf import message
 import requests
 
-from absl import logging
 from tensorboard import version
 from tensorboard.plugins.scalar import metadata as scalars_metadata
 from tensorboard.uploader.proto import server_info_pb2
@@ -31,31 +30,19 @@
 _REQUEST_TIMEOUT_SECONDS = 10
 
 
-def _server_info_request(upload_plugins):
-    """Generates a ServerInfoRequest
-
-    Args:
-      upload_plugins: List of plugin names requested by the user and to be
-        verified by the server.
-
-    Returns:
-      A `server_info_pb2.ServerInfoRequest` message.
-    """
+def _server_info_request():
     request = server_info_pb2.ServerInfoRequest()
     request.version = version.VERSION
-    request.plugin_specification.upload_plugins[:] = upload_plugins
     return request
 
 
-def fetch_server_info(origin, upload_plugins):
+def fetch_server_info(origin):
     """Fetches server info from a remote server.
 
     Args:
       origin: The server with which to communicate. Should be a string
         like "https://tensorboard.dev", including protocol, host, and (if
         needed) port.
-      upload_plugins: List of plugins names requested by the user and to be
-        verified by the server.
 
     Returns:
       A `server_info_pb2.ServerInfoResponse` message.
@@ -65,9 +52,7 @@ def fetch_server_info(origin, upload_plugins):
         communicate with the remote server.
     """
     endpoint = "%s/api/uploader" % origin
-    server_info_request = _server_info_request(upload_plugins)
-    post_body = server_info_request.SerializeToString()
-    logging.info("Requested server info: <%r>", server_info_request)
+    post_body = _server_info_request().SerializeToString()
     try:
         response = requests.post(
             endpoint,
@@ -90,15 +75,13 @@ def fetch_server_info(origin, upload_plugins):
         )
 
 
-def create_server_info(frontend_origin, api_endpoint, upload_plugins):
+def create_server_info(frontend_origin, api_endpoint):
     """Manually creates server info given a frontend and backend.
 
     Args:
       frontend_origin: The origin of the TensorBoard.dev frontend, like
         "https://tensorboard.dev" or "http://localhost:8000".
       api_endpoint: As to `server_info_pb2.ApiServer.endpoint`.
-      upload_plugins: List of plugin names requested by the user and to be
-        verified by the server.
 
     Returns:
       A `server_info_pb2.ServerInfoResponse` message.
@@ -112,7 +95,6 @@ def create_server_info(frontend_origin, api_endpoint, upload_plugins):
         placeholder = "{%s}" % placeholder
     url_format.template = "%s/experiment/%s/" % (frontend_origin, placeholder)
     url_format.id_placeholder = placeholder
-    result.plugin_control.allowed_plugins[:] = upload_plugins
     return result
 
 

tensorboard/uploader/server_info_test.py

@@ -70,39 +70,20 @@ def app(request):
             body = request.get_data()
             request_pb = server_info_pb2.ServerInfoRequest.FromString(body)
             self.assertEqual(request_pb.version, version.VERSION)
-            self.assertEqual(request_pb.plugin_specification.upload_plugins, [])
             return wrappers.BaseResponse(expected_result.SerializeToString())
 
         origin = self._start_server(app)
-        result = server_info.fetch_server_info(origin, [])
+        result = server_info.fetch_server_info(origin)
         self.assertEqual(result, expected_result)
 
-    def test_fetches_with_plugins(self):
-        @wrappers.BaseRequest.application
-        def app(request):
-            body = request.get_data()
-            request_pb = server_info_pb2.ServerInfoRequest.FromString(body)
-            self.assertEqual(request_pb.version, version.VERSION)
-            self.assertEqual(
-                request_pb.plugin_specification.upload_plugins,
-                ["plugin1", "plugin2"],
-            )
-            return wrappers.BaseResponse(
-                server_info_pb2.ServerInfoResponse().SerializeToString()
-            )
-
-        origin = self._start_server(app)
-        result = server_info.fetch_server_info(origin, ["plugin1", "plugin2"])
-        self.assertIsNotNone(result)
-
     def test_econnrefused(self):
         (family, localhost) = _localhost()
         s = socket.socket(family)
         s.bind((localhost, 0))
         self.addCleanup(s.close)
         port = s.getsockname()[1]
         with self.assertRaises(server_info.CommunicationError) as cm:
-            server_info.fetch_server_info("http://localhost:%d" % port, [])
+            server_info.fetch_server_info("http://localhost:%d" % port)
         msg = str(cm.exception)
         self.assertIn("Failed to connect to backend", msg)
         if os.name != "nt":
@@ -116,7 +97,7 @@ def app(request):
 
         origin = self._start_server(app)
         with self.assertRaises(server_info.CommunicationError) as cm:
-            server_info.fetch_server_info(origin, [])
+            server_info.fetch_server_info(origin)
         msg = str(cm.exception)
         self.assertIn("Non-OK status from backend (502 Bad Gateway)", msg)
         self.assertIn("very sad", msg)
@@ -129,7 +110,7 @@ def app(request):
 
         origin = self._start_server(app)
         with self.assertRaises(server_info.CommunicationError) as cm:
-            server_info.fetch_server_info(origin, [])
+            server_info.fetch_server_info(origin)
         msg = str(cm.exception)
         self.assertIn("Corrupt response from backend", msg)
         self.assertIn("an unlikely proto", msg)
@@ -142,18 +123,18 @@ def app(request):
             return wrappers.BaseResponse(result.SerializeToString())
 
         origin = self._start_server(app)
-        result = server_info.fetch_server_info(origin, [])
+        result = server_info.fetch_server_info(origin)
         expected_user_agent = "tensorboard/%s" % version.VERSION
         self.assertEqual(result.compatibility.details, expected_user_agent)
 
 
 class CreateServerInfoTest(tb_test.TestCase):
     """Tests for `create_server_info`."""
 
-    def test_response(self):
+    def test(self):
         frontend = "http://localhost:8080"
         backend = "localhost:10000"
-        result = server_info.create_server_info(frontend, backend, [])
+        result = server_info.create_server_info(frontend, backend)
 
         expected_compatibility = server_info_pb2.Compatibility()
         expected_compatibility.verdict = server_info_pb2.VERDICT_OK
@@ -171,19 +152,6 @@ def test_response(self):
         expected_url = "http://localhost:8080/experiment/123/"
         self.assertEqual(actual_url, expected_url)
 
-        self.assertEqual(result.plugin_control.allowed_plugins, [])
-
-    def test_response_with_plugins(self):
-        frontend = "http://localhost:8080"
-        backend = "localhost:10000"
-        result = server_info.create_server_info(
-            frontend, backend, ["plugin1", "plugin2"]
-        )
-
-        self.assertEqual(
-            result.plugin_control.allowed_plugins, ["plugin1", "plugin2"]
-        )
-
 
 class ExperimentUrlTest(tb_test.TestCase):
     """Tests for `experiment_url`."""

tensorboard/uploader/uploader_main.py

@@ -159,16 +159,6 @@ def _define_flags(parser):
         help="Experiment description. Markdown format.  Max 600 characters.",
     )
 
-    upload.add_argument(
-        "--plugins",
-        type=str,
-        nargs="*",
-        default=[],
-        help="List of plugins for which data should be uploaded. If "
-        "unspecified then data will be uploaded for all plugins supported by "
-        "the server.",
-    )
-
     update_metadata = subparsers.add_parser(
         "update-metadata",
         help="change the name, description, or other user "
@@ -744,10 +734,8 @@ def _get_intent(flags):
 def _get_server_info(flags):
     origin = flags.origin or _DEFAULT_ORIGIN
     if flags.api_endpoint and not flags.origin:
-        return server_info_lib.create_server_info(
-            origin, flags.api_endpoint, flags.plugins
-        )
-    server_info = server_info_lib.fetch_server_info(origin, flags.plugins)
+        return server_info_lib.create_server_info(origin, flags.api_endpoint)
+    server_info = server_info_lib.fetch_server_info(origin)
     # Override with any API server explicitly specified on the command
     # line, but only if the server accepted our initial handshake.
     if flags.api_endpoint and server_info.api_server.endpoint: