refactor(deploy): stream shell scripts over SSH and support binary-only updates

scripts/remote_deploy_wakey.sh

@@ -1,41 +1,80 @@
 #!/bin/sh
 # Usage: remote_deploy_wakey.sh <bin_tmp> <dest_path> [restart_flag]
 # restart_flag: 1 (default) to stop/start, 0 to only replace file.
+# Or stream over SSH: sh -s -- --batch [--binary <tmp> <dest> <restart> |
+#                                     --install <tmp> <dest>]...
 
 set -e
-BIN_TMP="$1"
-DEST="$2"
-RESTART="${3:-1}"
-INIT="/etc/init.d/wakey"
-KILL="/root/.bin/kill_wakey.sh"
 
-if [ -z "$BIN_TMP" ] || [ -z "$DEST" ]; then
-    echo "usage: $0 <bin_tmp> <dest_path> [restart_flag]" >&2
-    exit 2
-fi
+# A subshell keeps per-binary variables and exit statements local, including
+# when several replacements are requested by one dev_push invocation.
+deploy_binary() (
+    BIN_TMP="$1"
+    DEST="$2"
+    RESTART="${3:-1}"
+    INIT="/etc/init.d/wakey"
+    KILL="/root/.bin/kill_wakey.sh"
 
-[ -f "$BIN_TMP" ] || {
-    echo "tmp binary not found: $BIN_TMP" >&2
-    exit 1
+    if [ -z "$BIN_TMP" ] || [ -z "$DEST" ]; then
+        echo "usage: $0 <bin_tmp> <dest_path> [restart_flag]" >&2
+        exit 2
+    fi
+
+    [ -f "$BIN_TMP" ] || {
+        echo "tmp binary not found: $BIN_TMP" >&2
+        exit 1
+    }
+    chmod +x "$BIN_TMP" || true
+
+    if [ "$RESTART" = "1" ]; then
+        if [ -x "$INIT" ]; then
+            "$INIT" stop || true
+        elif [ -x "$KILL" ]; then
+            sh "$KILL" || true
+        fi
+    fi
+
+    mv -f "$BIN_TMP" "$DEST"
+
+    if [ "$RESTART" = "1" ]; then
+        if [ -x "$INIT" ]; then
+            "$INIT" start || "$INIT" restart || true
+        else
+            nohup "$DEST" >/dev/null 2>&1 &
+        fi
+    fi
+
+    exit 0
+)
+
+install_support_file() {
+    sed -i 's/\r$//' "$1" 2>/dev/null || true
+    mkdir -p "$(dirname "$2")"
+    cp -f "$1" "$2"
+    chmod 0755 "$2"
 }
-chmod +x "$BIN_TMP" || true
 
-if [ "$RESTART" = "1" ]; then
-    if [ -x "$INIT" ]; then
-        "$INIT" stop || true
-    elif [ -x "$KILL" ]; then
-        sh "$KILL" || true
-    fi
+if [ "${1:-}" != '--batch' ]; then
+    deploy_binary "$@"
+    exit
 fi
 
-mv -f "$BIN_TMP" "$DEST"
-
-if [ "$RESTART" = "1" ]; then
-    if [ -x "$INIT" ]; then
-        "$INIT" start || "$INIT" restart || true
-    else
-        nohup "$DEST" >/dev/null 2>&1 &
-    fi
-fi
-
-exit 0
+shift
+while [ "$#" -gt 0 ]; do
+    case "$1" in
+        --binary)
+            [ "$#" -ge 4 ] || { echo '--binary requires tmp, destination, restart' >&2; exit 2; }
+            deploy_binary "$2" "$3" "$4"
+            shift 4
+            ;;
+        --install)
+            [ "$#" -ge 3 ] || { echo '--install requires tmp and destination' >&2; exit 2; }
+            install_support_file "$2" "$3"
+            shift 3
+            ;;
+        *)
+            echo "unknown deployment operation: $1" >&2
+            exit 2
+            ;;
+    esac
+done