build_optimized.sh

#!/bin/bash
# ==============================================================================
# Optimized FydeOS Build Wrapper Script
# This script provides optimized Docker resource allocation and build management
# ==============================================================================

set -euo pipefail

# Configuration
PROJECT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
DOCKER_IMAGE="fydeos-builder-instance"
CONTAINER_NAME="fydeos-builder-instance"

# Detect system resources
TOTAL_CPU=$(nproc)
TOTAL_MEM_GB=$(free -g | awk 'NR==2{print $2}')
AVAILABLE_MEM_GB=$(free -g | awk 'NR==2{print $7}')

# Calculate optimal resource allocation
# Use 80% of CPUs, minimum 4, maximum 16
DOCKER_CPUS=$(echo "$TOTAL_CPU * 0.8" | bc | cut -d. -f1)
DOCKER_CPUS=$((DOCKER_CPUS < 4 ? 4 : DOCKER_CPUS))
DOCKER_CPUS=$((DOCKER_CPUS > 16 ? 16 : DOCKER_CPUS))

# Use 75% of available memory, minimum 8GB
DOCKER_MEMORY_GB=$(echo "$AVAILABLE_MEM_GB * 0.75" | bc | cut -d. -f1)
DOCKER_MEMORY_GB=$((DOCKER_MEMORY_GB < 8 ? 8 : DOCKER_MEMORY_GB))

echo "=========================================="
echo "FydeOS Build Environment - Optimized"
echo "=========================================="
echo "System CPUs: $TOTAL_CPU"
echo "Total Memory: ${TOTAL_MEM_GB}GB"
echo "Available Memory: ${AVAILABLE_MEM_GB}GB"
echo "Docker CPUs: $DOCKER_CPUS"
echo "Docker Memory: ${DOCKER_MEMORY_GB}GB"
echo "=========================================="

# Check if image exists, build if needed
if ! docker image inspect "$DOCKER_IMAGE" >/dev/null 2>&1; then
    echo "Building Docker image..."
    docker build --tag "$DOCKER_IMAGE" "$PROJECT_DIR"
else
    echo "Using existing Docker image: $DOCKER_IMAGE"
fi

# Clean up any existing container
if docker container inspect "$CONTAINER_NAME" >/dev/null 2>&1; then
    echo "Removing existing container..."
    docker container rm -f "$CONTAINER_NAME" >/dev/null
fi

# Create and run optimized container
echo "Starting optimized build container..."

exec docker run -it --rm \
    --name "$CONTAINER_NAME" \
    --cpus="$DOCKER_CPUS" \
    --memory="${DOCKER_MEMORY_GB}g" \
    --shm-size=4g \
    --ulimit nofile=65536:65536 \
    --ulimit nproc=65536:65536 \
    --env HOST_USER_ID="$(id -u)" \
    --env HOST_GROUP_ID="$(id -g)" \
    --env DEBUG_BUILD="${DEBUG_BUILD:-0}" \
    --env CCACHE_MAXSIZE="50G" \
    --env MAKEOPTS="-j${DOCKER_CPUS} -l$((DOCKER_CPUS + 2))" \
    --mount type=bind,source="$PROJECT_DIR",target=/home/cros-builder/fydeos-project \
    --workdir /home/cros-builder/fydeos-project \
    "$DOCKER_IMAGE"