feat: build lora_pkt_fwd

.github/workflows/compile-docker.yml

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+name: Compile Docker Images
+
+on: [push]
+
+jobs:
+  main:
+    runs-on: ubuntu-20.04
+    permissions:
+      packages: write
+      contents: read
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: |
+            nebraltd/lora_gateway
+            ghcr.io/${{ github.repository }}
+          flavor: |
+            latest=true
+          tags: |
+            type=sha,prefix=
+            type=sha,format=long,prefix=
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          labels: ${{ steps.meta.outputs.labels }}
+          tags: ${{ steps.meta.outputs.tags }}
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}

Dockerfile

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+# Builds lora_pkt_fwd for each SPI bus and copies each to
+# $OUTPUT_DIR/ respectively.
+
+FROM balenalib/raspberry-pi-debian:buster-build as lora-pkt-fwd-sx1301-builder
+
+ENV ROOT_DIR=/opt
+
+# Build output of nebraltd/lora_gateway
+ENV LORA_GATEWAY_OUTPUT_DIR=/opt/output
+
+# Intermediary location files from LORA_GATEWAY_OUTPUT_DIR are copied to
+ENV LORA_GATEWAY_INPUT_DIR="$ROOT_DIR/lora_gateway_builds"
+
+# Location source files for nebraltd/packet_forwarder are copied to
+ENV PACKET_FORWARDER_INPUT_DIR="$ROOT_DIR/packet_forwarder"
+
+# Output built files to this location
+ENV OUTPUT_DIR="$ROOT_DIR/output"
+
+WORKDIR "$ROOT_DIR"
+
+# Copy files into expected location
+COPY . "$PACKET_FORWARDER_INPUT_DIR"
+COPY --from=nebraltd/lora_gateway:9c4b1d0c79645c3065aa4c2f3019c14da6cb2675 "$LORA_GATEWAY_OUTPUT_DIR" "$LORA_GATEWAY_INPUT_DIR"
+
+# Compile lora_pkt_fwd for all buses
+RUN . "$PACKET_FORWARDER_INPUT_DIR/compile_lora_pkt_fwd.sh"

compile_lora_pkt_fwd.sh

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+#!/usr/bin/env sh
+
+compile_lora_pkt_fwd_for_spi_bus() {
+    spi_bus="$1"
+    echo "Compiling upstream lora_pkt_fwd for sx1301 on $spi_bus"
+
+    # lora_pkt_fwd Makefile expects lora_gateway to be to levels up
+    rm -rf "$ROOT_DIR/lora_gateway"
+    mkdir -p "$ROOT_DIR/lora_gateway"
+    cp -r "$LORA_GATEWAY_INPUT_DIR/$spi_bus/" "$ROOT_DIR/lora_gateway/libloragw/"
+
+    cd "$PACKET_FORWARDER_INPUT_DIR/lora_pkt_fwd" || exit
+    make clean
+    make -j 4
+
+    cp -R "$PACKET_FORWARDER_INPUT_DIR/lora_pkt_fwd/lora_pkt_fwd" "$OUTPUT_DIR/lora_pkt_fwd_$spi_bus"
+
+    echo "Finished building lora_pkt_fwd for sx1301 on $spi_bus in $OUTPUT_DIR"
+}
+
+compile_lora_pkt_fwd() {
+    echo "Compiling libloragw for sx1301 concentrator on all the necessary SPI buses in $ROOT_DIR"
+
+    # Built outputs will be copied to this directory
+    mkdir -p "$OUTPUT_DIR"
+
+    # In order to be more portable, intentionally not interating over an array
+    compile_lora_pkt_fwd_for_spi_bus spidev0.0
+    compile_lora_pkt_fwd_for_spi_bus spidev0.1
+    compile_lora_pkt_fwd_for_spi_bus spidev1.0
+    compile_lora_pkt_fwd_for_spi_bus spidev1.1
+    compile_lora_pkt_fwd_for_spi_bus spidev1.2
+    compile_lora_pkt_fwd_for_spi_bus spidev2.0
+    compile_lora_pkt_fwd_for_spi_bus spidev2.1
+    compile_lora_pkt_fwd_for_spi_bus spidev32766.0
+}
+
+compile_lora_pkt_fwd
+