deploy: cross-compile static aarch64 for the Alpine imagev0.1.54

1 files changed, 38 insertions, 14 deletions

diff --git a/scripts/deploy.sh b/scripts/deploy.sh
index ad5350c..b625ac5 100755
--- a/scripts/deploy.sh
+++ b/scripts/deploy.sh
@@ -3,10 +3,12 @@
 #
 #   scripts/deploy.sh [--dev] [tag]
 #
-# Normal mode builds an image and recreates the container, building natively on
-# the host when the target architecture differs. --dev (same architecture only)
-# skips the image: it copies the fresh binaries into the running container and
-# reloads the daemon with SIGHUP, which re-execs them in place.
+# Normal mode cross-compiles the static aarch64 backend binaries on this
+# machine and assembles the image on the host when the architectures differ
+# (otherwise it builds and ships the image locally). --dev skips the image: it
+# copies fresh binaries into the running container and reloads the daemon with
+# SIGHUP, which re-execs them in place; the binaries are cross-compiled when
+# the host runs a different architecture.
 #
 # BOKF_HOST (user@host) and BOKF_REMOTE_DIR are read from the environment or
 # from .env in the repository root. The host needs only Docker and Compose.
@@ -61,6 +63,21 @@ wait_healthy() {
     return 1
 }
 
+cross_build() {
+    echo "deploy: cross-compiling static $host_arch binaries on this machine"
+    rm -rf .prebuilt
+    mkdir -p .prebuilt
+    docker build -q -f deploy/Dockerfile.cross -t bokf-cross deploy/ >/dev/null
+    docker run --rm -e "VERSION=$TAG" -v "$PWD":/src:ro \
+        -v "$PWD/.prebuilt":/out bokf-cross
+    if command -v file >/dev/null 2>&1 &&
+        ! file .prebuilt/bokfd | grep -q aarch64; then
+        echo "deploy: cross-build produced no arm64 binary" >&2
+        rm -rf .prebuilt
+        exit 1
+    fi
+}
+
 echo "deploy: gate: build + tests"
 make -j"$(nproc)"
 make test
@@ -73,7 +90,7 @@ case "$BOKF_BUILD" in
         if [ "$(uname -m)" = "$host_arch" ]; then
             BOKF_BUILD=local
         else
-            echo "deploy: host is $host_arch, building the image on the host"
+            echo "deploy: host is $host_arch, cross-compiling here"
             BOKF_BUILD=remote
         fi
         ;;
@@ -86,20 +103,30 @@ case "$BOKF_BUILD" in
         ;;
 esac
 
-if [ "$DEV" = 1 ] && [ "$BOKF_BUILD" = local ]; then
+if [ "$DEV" = 1 ]; then
     if ! remote "test -f '$BOKF_REMOTE_DIR/var/db/bokfd.db'"; then
         echo "deploy: no database on $BOKF_HOST; run a normal deploy first" >&2
         exit 1
     fi
-    echo "deploy: dev: copying the locally built binaries into the running container"
+    if [ "$BOKF_BUILD" = local ]; then
+        prebin="build"
+        echo "deploy: dev: using the locally built binaries"
+    else
+        cross_build
+        prebin=".prebuilt"
+    fi
+    echo "deploy: dev: copying the binaries into the running container"
     remote "mkdir -p /tmp/bokf-dev"
-    scp -q build/bokfd build/bokfctl "$BOKF_HOST:/tmp/bokf-dev/"
+    scp -q "$prebin/bokfd" "$prebin/bokfctl" "$BOKF_HOST:/tmp/bokf-dev/"
     remote "cd '$BOKF_REMOTE_DIR'
             cid=\$(docker compose ps -q bokfd)
             test -n \"\$cid\" || { echo 'deploy: bokfd is not running' >&2; exit 1; }
             docker cp /tmp/bokf-dev/bokfd \"\$cid:/usr/local/bin/bokfd\"
             docker cp /tmp/bokf-dev/bokfctl \"\$cid:/usr/local/bin/bokfctl\"
             docker kill --signal=HUP \"\$cid\""
+    if [ "$prebin" = ".prebuilt" ]; then
+        rm -rf .prebuilt
+    fi
     ver=""
     for _ in $(seq 1 15); do
         ver="$(remote "cd '$BOKF_REMOTE_DIR' && docker exec \$(docker compose ps -q bokfd) bokfctl meta 2>/dev/null" |
@@ -116,23 +143,20 @@ if [ "$DEV" = 1 ] && [ "$BOKF_BUILD" = local ]; then
     exit 1
 fi
 
-if [ "$DEV" = 1 ]; then
-    echo "deploy: dev: host is $host_arch, hot reload needs a matching" \
-         "architecture; doing a full deploy" >&2
-fi
-
 if [ "$BOKF_BUILD" = local ]; then
     echo "deploy: building image bokf:$TAG locally"
     docker build --build-arg "VERSION=$TAG" -t "bokf:$TAG" .
     echo "deploy: shipping image to $BOKF_HOST"
     docker save "bokf:$TAG" | gzip | "${SSH[@]}" 'gunzip | docker load'
 else
-    echo "deploy: assembling image bokf:$TAG natively on $BOKF_HOST"
+    cross_build
+    echo "deploy: assembling image bokf:$TAG on $BOKF_HOST"
     tar -cf - \
         --exclude=./.git --exclude=./build --exclude=./var --exclude=./.env \
         --exclude='./*.se' --exclude='./*.db' --exclude='./*.db-wal' \
         --exclude='./*.db-shm' --exclude=./docs . |
         "${SSH[@]}" "docker build --build-arg 'VERSION=$TAG' -t 'bokf:$TAG' -"
+    rm -rf .prebuilt
 fi
 
 remote "mkdir -p '$BOKF_REMOTE_DIR'"