Data flow graph public preview

.github/workflows/wasm-python-build.yml

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+name: Build and Publish WASM Python Builder Image
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ main, wasm ]
+    paths:
+      - 'samples/wasm/python/Dockerfile'
+      - 'samples/wasm/python/schema/**'
+      - 'samples/wasm/python/inject_pdb.py'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'samples/wasm/python/Dockerfile'
+      - 'samples/wasm/python/schema/**'
+      - 'samples/wasm/python/inject_pdb.py'
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Log in to GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Extract metadata for Docker
+      id: meta
+      uses: docker/metadata-action@v5
+      with:
+        images: ghcr.io/azure-samples/explore-iot-operations/python-wasm-builder
+        tags: |
+          type=ref,event=branch
+          type=ref,event=pr
+          type=raw,value=latest
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v5
+      with:
+        context: samples/wasm/python
+        file: samples/wasm/python/Dockerfile
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
+        platforms: linux/amd64,linux/arm64

.github/workflows/wasm-rust-build.yml

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+name: Build and Push WASM Rust Builder Image
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ main, wasm ]
+    paths:
+      - 'samples/wasm/rust/Dockerfile'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'samples/wasm/rust/Dockerfile'
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: "Checkout GitHub Action"
+        uses: actions/checkout@main
+
+      - name: "Login to GitHub Container Registry"
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{github.actor}}
+          password: ${{secrets.GITHUB_TOKEN}}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/azure-samples/explore-iot-operations/rust-wasm-builder
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=sha
+            type=raw,value=latest
+
+      - name: "Build and Push Rust Builder Image"
+        uses: docker/build-push-action@v5
+        with:
+          context: samples/wasm/rust
+          file: samples/wasm/rust/Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

docker/wasm-rust-build/Dockerfile

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+ARG RUST_VERSION=1.85
+FROM rust:${RUST_VERSION}-alpine
+
+ARG ARCH="x86_64"
+
+RUN apk add --no-cache clang lld musl-dev git perl make cmake
+RUN rustup target add wasm32-wasip2 ${ARCH}-unknown-linux-gnu
+
+# Set up environment for Cargo registry
+ENV CARGO_REGISTRIES_AZURE_VSCODE_TINYKUBE_INDEX="sparse+https://pkgs.dev.azure.com/azure-iot-sdks/iot-operations/_packaging/preview/Cargo/index/"
+ENV CARGO_NET_GIT_FETCH_WITH_CLI=true
+
+WORKDIR /src

docker/wasm-rust-build/README.md

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+# WASM Rust Build Base Image
+
+This Docker image provides a base environment for building WebAssembly (WASM) applications with Rust targeting the `wasm32-wasip2` platform.
+
+## Features
+
+- Based on Alpine Linux with Rust 1.85
+- Pre-configured for WASM compilation with `wasm32-wasip2` target
+- Required build tools: clang, lld, musl-dev, git, perl, make, cmake
+- Environment variables for Azure IoT Operations Cargo registry
+
+## Usage
+
+This base image is intended to be used as a build stage in multi-stage Docker builds for WASM operators:
+
+```dockerfile
+ARG IMAGE=ghcr.io/azure-samples/explore-iot-operations/wasm-rust-build:latest
+FROM $IMAGE AS operator-build
+
+ARG APP_NAME
+ARG BUILD_MODE="release"
+
+WORKDIR /src
+COPY ./Cargo.toml ./Cargo.toml
+COPY ./src ./src
+
+RUN if [ "${BUILD_MODE}" = "release" ]; then \
+        cargo build --release --target wasm32-wasip2; \
+    else \
+        cargo build --target wasm32-wasip2; \
+    fi
+
+FROM scratch
+ARG BUILD_MODE
+ARG APP_NAME
+COPY --from=operator-build "/src/target/wasm32-wasip2/${BUILD_MODE}/${APP_NAME}.wasm" "${APP_NAME}.wasm"
+ENTRYPOINT [ "${APP_NAME}.wasm" ]
+```
+
+## Build Arguments
+
+- `RUST_VERSION`: Rust version to use (default: 1.85)
+- `ARCH`: Target architecture (default: x86_64)
+
+## Environment Variables
+
+- `CARGO_REGISTRIES_AZURE_VSCODE_TINYKUBE_INDEX`: Azure IoT Operations Cargo registry URL
+- `CARGO_NET_GIT_FETCH_WITH_CLI`: Use Git CLI for fetching dependencies
+
+## Publishing
+
+This image is automatically built and published to GitHub Container Registry via GitHub Actions when changes are made to the `docker/wasm-rust-build/` directory.