build: Add server and client specific installs

README.md

@@ -4,10 +4,17 @@ Deephaven Community IPython Widget Library
 
 ## Installation
 
-You can install using `pip`:
+You can install using `pip`. 
 
+If running with the embedded server (`deephaven-server`), install with the following:
+```shell
+pip install "deephaven-ipywidgets[server]"
+```
+This installs the embedded server.
+
+If connecting to a server running elsewhere (`pydeephaven`), install with the following:
 ```bash
-pip install deephaven-ipywidgets
+pip install "deephaven-ipywidgets[client]"
 ```
 
 If you are using Jupyter Notebook 5.2 or earlier, you may also need to enable
@@ -21,7 +28,7 @@ jupyter nbextension enable --py [--sys-prefix|--user|--system] deephaven-ipywidg
 
 ### Starting the server
 
-First you'll need to start the [Deephaven server](https://github.com/deephaven/deephaven-core/blob/d73ef01cdf6fda43f7d03110995add26d16d4eae/py/embedded-server/README.md).
+First, if you are using the embedded server, you'll need to start the [Deephaven server](https://github.com/deephaven/deephaven-core/blob/d73ef01cdf6fda43f7d03110995add26d16d4eae/py/embedded-server/README.md).
 
 ```python
 # Start up the Deephaven Server on port 8080 with token `iris`
@@ -49,6 +56,35 @@ You can also pass in the size you would like the widget to be:
 display(DeephavenWidget(t, width=100, height=250))
 ```
 
+### Connecting to a Remote Server
+
+If you are using the client to connect to an already running server, create a `pydeephaven` session.
+See the [pydeephaven documentation](https://deephaven.io/core/docs/tutorials/pyclient-quickstart/) for more information.
+```python
+from pydeephaven import Session
+
+client_session = Session(
+    host="deephaven.local",
+    port=10000,
+    auth_type="io.deephaven.authentication.psk.PskAuthenticationHandler",
+    auth_token="YOUR_PASSWORD_HERE",
+)
+```
+
+### Displaying Tables from a Remote Server
+
+The session can be used to create objects such as tables on the server and then display them in the widget.
+```python
+t = client_session.time_table("PT1s")
+from deephaven_ipywidgets import DeephavenWidget
+display(DeephavenWidget(t))
+```
+
+You can also reference objects already created on the server. This code assumes a table named `t` exists on the server.
+```python
+display(DeephavenWidget("t", session=client_session))
+```
+
 ### Alternate Deephaven Server URL
 
 By default, the Deephaven server is located at `http://localhost:{port}`, where `{port}` is the port set in the Deephaven server creation call. If the server is not there, such as when running a Jupyter notebook in a Docker container, modify the `DEEPHAVEN_IPY_URL` environmental variable to the correct URL before creating a `DeephavenWidget`.

deephaven_ipywidgets/deephaven.py

@@ -14,7 +14,6 @@
 
 from ipywidgets import DOMWidget
 from traitlets import Unicode, Integer, Bytes, Bool
-from deephaven_server import Server
 from uuid import uuid4
 from ._frontend import module_name, module_version
 import os
@@ -145,6 +144,7 @@ def __init__(self, deephaven_object, height=600, width=0, session=None):
 
             session.bind_table(object_id, deephaven_object)
         else:
+            from deephaven_server import Server
             port = Server.instance.port
             server_url = f"http://localhost:{port}/"
 

setup.py

@@ -93,7 +93,7 @@
     ],
     include_package_data=True,
     python_requires=">=3.6",
-    install_requires=["ipywidgets>=8.0.0,<9", "deephaven-server>=0.31.0"],
+    install_requires=["ipywidgets>=8.0.0,<9"],
     extras_require={
         "test": [
             "pytest>=4.6",
@@ -102,6 +102,8 @@
         ],
         "examples": [
             # Any requirements for the examples to run
+            "deephaven-server>=0.31.0",
+            "pydeephaven",
         ],
         "docs": [
             "jupyter_sphinx",
@@ -113,6 +115,12 @@
             "sphinx>=1.5",
             "sphinx_rtd_theme",
         ],
+        "server": [
+            "deephaven-server>=0.31.0",
+        ],
+        "client": [
+            "pydeephaven"
+        ]
     },
     entry_points={},
 )