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Roger Barreto 705473c276 .NET: Add hosted agent observability sample (#5660)
* .Net: Add hosted agent observability sample

Mirrors the Python sample added in #5608 for Foundry hosted agents. The
.NET hosting library already wires OpenTelemetry automatically via
Microsoft.Agents.AI.Foundry.Hosting (ApplyOpenTelemetry) plus
Azure.AI.AgentServer.Core's AddAgentHostTelemetry, so no framework
changes are needed. The sample is documentation plus a runnable artifact
that produces an interesting span tree (invoke_agent / agent_invoke /
chat / execute_tool).

Adds Hosted-Observability under FoundryHostedAgents/responses with two
small tools (GetCurrentLocation, GetWeather), agent.yaml /
agent.manifest.yaml declaring OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT
(the .NET equivalent of Python's ENABLE_SENSITIVE_DATA), Dockerfile +
Dockerfile.contributor, .env.example and README explaining the .NET vs
Python defaults. Project added to agent-framework-dotnet.slnx.

* Address PR feedback: use Random.Shared and add .dockerignore
2026-05-06 08:33:16 +00:00

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Docker

# Dockerfile for contributors building from the agent-framework repository source.
#
# This project uses ProjectReference to the local Microsoft.Agents.AI.Foundry source,
# which means a standard multi-stage Docker build cannot resolve dependencies outside
# this folder. Instead, pre-publish the app targeting the container runtime and copy
# the output into the container:
#
# dotnet publish -c Debug -f net10.0 -r linux-musl-x64 --self-contained false -o out
# docker build -f Dockerfile.contributor -t hosted-observability .
# docker run --rm -p 8088:8088 -e AGENT_NAME=hosted-observability -e AZURE_BEARER_TOKEN=$AZURE_BEARER_TOKEN --env-file .env hosted-observability
#
# For end-users consuming the NuGet package (not ProjectReference), use the standard
# Dockerfile which performs a full dotnet restore + publish inside the container.
FROM mcr.microsoft.com/dotnet/aspnet:10.0-alpine AS final
WORKDIR /app
COPY out/ .
EXPOSE 8088
ENV ASPNETCORE_URLS=http://+:8088
ENTRYPOINT ["dotnet", "HostedObservability.dll"]