Companion Document: RUSTCHAIN_PRODUCTION_EXPERIENCE_WHITEPAPER.md
Focus: Actionable implementation details for identified improvements
Priority: Critical fixes based on real production failures
Current Code Location: rustchain::engine timeout handling
Problem: Fixed 60-second timeout insufficient for large operations
Proposed Rust Implementation:
#[derive(Debug, Clone)]
pub struct AdaptiveTimeout {
base_timeout: Duration,
max_timeout: Duration,
operation_type: OperationType,
working_directory_size: Option<u64>,
}
impl AdaptiveTimeout {
pub fn calculate_timeout(&self, command: &str, args: &[String]) -> Duration {
match self.operation_type {
OperationType::Grep | OperationType::Find => {
let size_factor = self.working_directory_size
.map(|size| (size / 1_000_000) as u64) // MB
.unwrap_or(1);
let calculated = self.base_timeout * size_factor.max(1);
calculated.min(self.max_timeout)
},
OperationType::Simple => self.base_timeout,
OperationType::Build => Duration::from_secs(300),
}
}
}Mission YAML Enhancement:
parameters:
command: "grep"
args: ["-r", "API_KEY", "."]
timeout_strategy: "adaptive"
base_timeout_seconds: 30
max_timeout_seconds: 300
size_factor: 1.5 # Multiply by directory size in MBImplementation Approach:
pub struct ProgressMonitor {
start_time: Instant,
last_update: Instant,
timeout: Duration,
}
impl ProgressMonitor {
pub fn check_progress(&mut self, process: &mut Child) -> Result<ProgressStatus, Error> {
if self.start_time.elapsed() > self.timeout {
// Instead of killing immediately, try to get partial results
if let Ok(output) = process.try_wait() {
return Ok(ProgressStatus::PartialComplete);
}
return Err(Error::Timeout);
}
// Update user every 10 seconds
if self.last_update.elapsed() > Duration::from_secs(10) {
eprintln!("⏳ Step still running... ({:.1}s elapsed)",
self.start_time.elapsed().as_secs_f64());
self.last_update = Instant::now();
}
Ok(ProgressStatus::InProgress)
}
}Cross-Platform Command Mapping:
#[derive(Debug, Clone)]
pub enum PlatformCommand {
Unix { command: String, args: Vec<String> },
Windows { command: String, args: Vec<String> },
Cross { command: String, args: Vec<String> },
}
impl PlatformCommand {
pub fn resolve(&self) -> (String, Vec<String>) {
match (self, std::env::consts::OS) {
(PlatformCommand::Unix { command, args }, "linux" | "macos") =>
(command.clone(), args.clone()),
(PlatformCommand::Windows { command, args }, "windows") =>
(command.clone(), args.clone()),
(PlatformCommand::Cross { command, args }, _) =>
(command.clone(), args.clone()),
// Fallback logic
(PlatformCommand::Unix { .. }, "windows") => {
eprintln!("⚠️ Unix command on Windows, attempting compatibility mode");
self.convert_to_windows()
},
_ => (String::from("echo"), vec![String::from("Unsupported platform")])
}
}
}Mission YAML Enhancement:
- id: "check_permissions"
step_type: "command"
parameters:
platform_commands:
unix:
command: "find"
args: [".", "-name", "*.db", "-exec", "ls", "-la", "{}", ";"]
windows:
command: "Get-ChildItem"
args: ["-Path", ".", "-Include", "*.db", "-Recurse", "-Force"]
fallback_command: "ls"
detect_platform: trueSmart Dependency Resolution:
#[derive(Debug, Clone)]
pub struct DependencyConfig {
pub strategy: DependencyStrategy,
pub continue_on_failure: bool,
pub retry_config: Option<RetryConfig>,
}
#[derive(Debug, Clone)]
pub enum DependencyStrategy {
AllRequired, // All dependencies must succeed
AnyRequired, // At least one dependency must succeed
BestEffort, // Continue with available data
Conditional(Vec<ConditionalDep>), // Complex conditional logic
}
#[derive(Debug, Clone)]
pub struct ConditionalDep {
pub step_id: String,
pub required: bool,
pub on_failure: FailureAction,
}
#[derive(Debug, Clone)]
pub enum FailureAction {
Skip,
LogWarning,
UseDefaultValue(String),
RetryWithAlternative(String),
}Resource Monitoring Implementation:
pub struct ResourceMonitor {
max_memory: u64,
max_cpu_percent: f32,
start_memory: u64,
start_cpu: f32,
}
impl ResourceMonitor {
pub fn check_limits(&self, process: &Child) -> Result<(), ResourceError> {
let current_memory = self.get_process_memory(process.id())?;
let current_cpu = self.get_process_cpu(process.id())?;
if current_memory > self.max_memory {
return Err(ResourceError::MemoryLimitExceeded {
current: current_memory,
limit: self.max_memory,
});
}
if current_cpu > self.max_cpu_percent {
return Err(ResourceError::CpuLimitExceeded {
current: current_cpu,
limit: self.max_cpu_percent,
});
}
Ok(())
}
}Resource-Aware Mission Configuration:
config:
resource_limits:
max_memory_mb: 512
max_cpu_percent: 75
max_disk_io_mb_per_sec: 100
max_parallel_steps: 2
monitoring:
check_interval_seconds: 5
warn_threshold_percent: 80
kill_on_exceed: trueProblem Command:
command: "grep"
args: ["-r", "API_KEY\\|SECRET\\|PASSWORD\\|TOKEN", ".", "--include=*.go", "--include=*.md"]Improved Implementation:
- id: "verify_env_security_optimized"
step_type: "command"
parameters:
command: "find"
args: [".", "-name", "*.go", "-o", "-name", "*.md", "-exec", "grep", "-l", "API_KEY\\|SECRET\\|PASSWORD\\|TOKEN", "{}", ";"]
timeout_strategy: "adaptive"
base_timeout_seconds: 60
max_timeout_seconds: 300
chunk_processing: true
max_files_per_chunk: 100Problem Command:
command: "find"
args: [".", "-name", "*.db", "-o", "-name", "*.log", "-o", "-name", "*.key", "-exec", "ls", "-la", "{}", ";"]Cross-Platform Solution:
- id: "check_file_permissions_cross_platform"
step_type: "command"
parameters:
platform_commands:
unix:
command: "find"
args: [".", "\\(", "-name", "*.db", "-o", "-name", "*.log", "-o", "-name", "*.key", "\\)", "-exec", "ls", "-la", "{}", ";"]
windows:
command: "powershell"
args: ["-Command", "Get-ChildItem -Path . -Include *.db,*.log,*.key -Recurse | Select-Object FullName,Mode,LastWriteTime"]
detect_platform: true
timeout_seconds: 120Problem Command:
bash -c "for i in {1..10}; do curl -s -o /dev/null -w '%{http_code}\\n' http://localhost:8084/api/v1/stats; done"Simplified Approach:
- id: "test_rate_limiting_simple"
step_type: "command"
parameters:
command: "curl"
args: ["-s", "-w", "%{http_code}\\n", "http://localhost:8084/api/v1/stats"]
repeat_count: 10
delay_between_repeats_ms: 100
expect_status_codes: [200, 401, 429]
timeout_seconds: 30Security Audit Mission: 32.68s (3 failures, 2 successes)
Test Coverage Mission: 129.88s (1 failure, 5 successes)
Database Import Mission: 32.04s (4 failures, 3 successes)
Security Hardening Mission: 60s+ (timeout failure)
Total Success Rate: 61% (15/22 steps successful)
Security Audit Mission: 25s (1 failure, 5 successes) - 83% success
Test Coverage Mission: 45s (0 failures, 6 successes) - 100% success
Database Import Mission: 20s (1 failure, 6 successes) - 86% success
Security Hardening Mission: 90s (0 failures, 7 successes) - 100% success
Projected Success Rate: 92% (24/26 steps successful)
Projected Time Savings: 40% faster execution
- Adaptive timeout system implementation
- Progress monitoring for long operations
- Basic platform detection
- Cross-platform command mapping
- Smart dependency management
- Resource monitoring system
- Test all fixes against ContextLite missions
- Benchmark performance improvements
- Validate 90%+ success rate achievement
- Update mission format documentation
- Create migration guide for existing missions
- Performance tuning and optimization
- Mission Success Rate: 90%+ (from current 75%)
- Timeout Failures: <5% (from current 25%)
- Platform Compatibility: Support Windows/Linux/macOS
- Resource Usage: <500MB memory, <50% CPU
- Execution Speed: 40% faster average execution time
- Error Clarity: 100% actionable error messages
- Setup Time: <5 minutes from clone to working missions
- Learning Curve: <30 minutes to create first successful mission
- Documentation Coverage: 100% of features documented with examples
This roadmap provides concrete, implementable solutions to the specific issues encountered during the ContextLite integration, ensuring RustChain evolves into a robust, production-ready automation platform.