feat(NGUI-223): a2a protocol support

.github/workflows/pants.yaml

@@ -131,13 +131,20 @@ jobs:
         with:
           name: distribution
           path: dist/
-      - name: Push image to quay.io
-        id: push-to-quay
+      - name: Push MCP image to quay.io
+        id: push-mcp-to-quay
         uses: redhat-actions/push-to-registry@v2
         with:
             tags: quay.io/next-gen-ui/mcp:dev
             username: ${{ secrets.QUAY_USERNAME }}
             password: ${{ secrets.QUAY_TOKEN }}
+      - name: Push A2A image to quay.io
+        id: push-a2a-to-quay
+        uses: redhat-actions/push-to-registry@v2
+        with:
+            tags: quay.io/next-gen-ui/a2a:dev
+            username: ${{ secrets.QUAY_USERNAME }}
+            password: ${{ secrets.QUAY_TOKEN }}
     #   - name: push README to quay.io
     #     uses: christian-korneck/update-container-description-action@v1
     #     env:

.github/workflows/publish.yaml

@@ -41,13 +41,20 @@ jobs:
         with:
           name: dist
           path: dist/
-      - name: Push image to quay.io
-        id: push-to-quay
+      - name: Push MCP image to quay.io
+        id: push-mcp-to-quay
         uses: redhat-actions/push-to-registry@v2
         with:
             tags: quay.io/next-gen-ui/mcp:latest quay.io/next-gen-ui/mcp:${{github.ref_name}}
             username: ${{ secrets.QUAY_USERNAME }}
             password: ${{ secrets.QUAY_TOKEN }}
+      - name: Push A2A image to quay.io
+        id: push-a2a-to-quay
+        uses: redhat-actions/push-to-registry@v2
+        with:
+            tags: quay.io/next-gen-ui/a2a:latest quay.io/next-gen-ui/a2a:${{github.ref_name}}
+            username: ${{ secrets.QUAY_USERNAME }}
+            password: ${{ secrets.QUAY_TOKEN }}
   publish:
     name: "Publish to PyPI"
     needs:

.vscode/launch.json

@@ -34,6 +34,18 @@
                 // "--config-path", "${workspaceFolder}/../ngui_openshift_mcp_config.yaml"
             ],
         },
+        {
+            "name": "Python Debugger: A2A Server",
+            "type": "debugpy",
+            "request": "launch",
+            "program": "${workspaceFolder}/libs/next_gen_ui_a2a",
+            "console": "integratedTerminal",
+            "env": {
+                "PYTHONPATH": "${workspaceFolder}/libs"
+            },
+            "args": [
+            ],
+        },
         {
             "name": "Python Debugger: distribution-all",
             "type": "debugpy",

libs/3rdparty/python/BUILD

@@ -39,6 +39,11 @@ python_requirements(
     source="rich-requirements.txt",
 )
 
+python_requirements(
+    name="a2a",
+    source="a2a-requirements.txt",
+)
+
 python_requirements(
     name="mcp",
     source="mcp-requirements.txt",

libs/3rdparty/python/a2a-requirements.txt

@@ -0,0 +1 @@
+a2a-sdk==0.3.11

libs/next_gen_ui_a2a/BUILD

@@ -0,0 +1,61 @@
+# This target sets the metadata for all the Python non-test files in this directory.
+python_sources(
+    name="lib",
+    dependencies=[
+        "libs/3rdparty/python:a2a",
+    ],
+)
+
+# This target sets the metadata for all the Python test files in this directory.
+python_tests(
+    name="tests",
+    dependencies=[
+        "libs/3rdparty/python:a2a",
+        "libs/3rdparty/python:pytest",
+    ],
+)
+
+# This target allows us to build a `.whl` bdist and a `.tar.gz` sdist by auto-generating
+#  `setup.py`. See https://www.pantsbuild.org/docs/python-distributions.
+#
+# Because this target has no source code, Pants cannot infer dependencies. We depend on `:lib`,
+#  which means we'll include all the non-test Python files in this directory, and any of
+#  their dependencies.
+python_distribution(
+    name="dist",
+    dependencies=[
+        ":lib",
+    ],
+    provides=python_artifact(
+        name="next_gen_ui_a2a",
+        version=env("VERSION"),
+        license="Apache-2.0",
+        description="A2A integration for Next Gen UI Agent",
+        long_description_content_type="text/markdown",
+        classifiers=[
+            "Programming Language :: Python :: 3",
+            "Programming Language :: Python :: 3.12",
+            "Programming Language :: Python :: 3.13",
+            "Programming Language :: Python :: 3.14",
+            "License :: OSI Approved :: Apache Software License",
+        ],
+        url="https://github.com/RedHat-UX/next-gen-ui-agent",
+    ),
+    long_description_path="libs/next_gen_ui_a2a/README.md",
+    generate_setup=True,
+)
+
+docker_image(
+    name="docker",
+    source="Containerfile",
+    repository="next-gen-ui/a2a",
+    image_tags=[env("VERSION"), "latest", "dev"],
+    registries=[
+        "quay.io",
+    ],
+    dependencies=[
+        ":dist",
+        "libs/next_gen_ui_agent:dist",
+        "libs/next_gen_ui_rhds_renderer:dist",
+    ],
+)

libs/next_gen_ui_a2a/Containerfile

@@ -0,0 +1,41 @@
+# Next Gen UI A2A Server
+
+# Build locally
+# pants package ::
+#
+# Run:
+# podman run --rm -it -p 9999:9999 --env A2A_PORT="9999" quay.io/next-gen-ui/a2a:dev
+#  podman run --rm -it -p 9999:9999 --env NGUI_MODEL="llama3.2" --env NGUI_PROVIDER_API_BASE_URL="http://host.containers.internal:11434/v1" --env NGUI_PROVIDER_API_KEY="ollama" quay.io/next-gen-ui/a2a:dev
+FROM registry.access.redhat.com/ubi9/python-312-minimal:9.6
+
+# Set work directory
+WORKDIR /opt/app-root/src
+
+# Copy Python Project Files (Container context must be the `python` directory)
+COPY --chown=1001:root . /opt/app-root/src/
+
+USER root
+
+# Install next_gen_ui dependencies
+RUN pip install \
+    next_gen_ui_agent*.whl \
+    next_gen_ui_a2a*.whl \
+    next_gen_ui_rhds*.whl \
+    a2a-sdk[http-server] uvicorn langchain_openai
+
+
+# Allow non-root user to access the everything in app-root
+RUN chgrp -R root /opt/app-root/src && chmod -R g+rwx /opt/app-root/src
+
+ENV A2A_PORT="9999"
+ENV NGUI_PROVIDER_API_KEY=""
+ENV NGUI_PROVIDER_API_BASE_URL=""
+ENV NGUI_MODEL="gpt-4o"
+
+# Expose default port (change if needed)
+EXPOSE $A2A_PORT
+
+USER 1001
+
+# Run the agent
+CMD python -m next_gen_ui_a2a