darpan 0.2.5

Linux developer service monitoring utility with auto-detection, real-time health checks, and interactive TUI for databases, APIs, Docker containers, and more
Documentation 
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pub mod docker;
pub mod export;
pub mod file;
pub mod log_registry;
pub mod process;
pub mod script;
pub mod systemd;

use crate::models::{LogEntry, LogSource, Service};
use anyhow::Result;
use std::collections::VecDeque;
use tokio::sync::mpsc;

/// Trait for log stream implementations
#[async_trait::async_trait]
pub trait LogStreamer: Send + Sync {
    /// Start streaming logs for a service
    async fn stream_logs(
        &self,
        service: &Service,
        tx: mpsc::UnboundedSender<LogEntry>,
    ) -> Result<()>;

    /// Check if this streamer can handle the given service
    fn can_handle(&self, service: &Service) -> bool;

    /// Get the log source type
    fn source_type(&self) -> LogSource;
}

/// Manager for coordinating different log streamers
/// This is a compatibility wrapper around LogStreamerRegistry
pub struct LogStreamManager {
    registry: log_registry::LogStreamerRegistry,
}

impl LogStreamManager {
    pub fn new() -> Self {
        let mut registry = log_registry::LogStreamerRegistry::new();
        
        // Register built-in streamers in priority order
        registry.register("docker".to_string(), Box::new(docker::DockerLogStreamer::new()));
        registry.register("systemd".to_string(), Box::new(systemd::SystemdLogStreamer::new()));
        registry.register("file".to_string(), Box::new(file::FileLogStreamer::new()));
        registry.register("process".to_string(), Box::new(process::ProcessLogStreamer::new()));
        
        Self { registry }
    }

    /// Start streaming logs for a service
    /// Returns a receiver for log entries
    pub async fn start_streaming(
        &self,
        service: &Service,
    ) -> Result<mpsc::UnboundedReceiver<LogEntry>> {
        self.registry.start_streaming(service).await
    }

    /// Get mutable access to the underlying registry for extension
    pub fn registry_mut(&mut self) -> &mut log_registry::LogStreamerRegistry {
        &mut self.registry
    }
}

/// A buffer for storing log entries
pub struct LogBuffer {
    entries: VecDeque<LogEntry>,
    max_size: usize,
}

impl LogBuffer {
    pub fn new(max_size: usize) -> Self {
        Self {
            entries: VecDeque::with_capacity(max_size),
            max_size,
        }
    }

    pub fn push(&mut self, entry: LogEntry) {
        if self.entries.len() >= self.max_size {
            self.entries.pop_front();
        }
        self.entries.push_back(entry);
    }

    pub fn entries(&self) -> &VecDeque<LogEntry> {
        &self.entries
    }

    pub fn clear(&mut self) {
        self.entries.clear();
    }

    pub fn len(&self) -> usize {
        self.entries.len()
    }

    pub fn is_empty(&self) -> bool {
        self.entries.is_empty()
    }
}