_ Git - dnsseed-rust/blob - src/printer.rs

   1 use std::sync::atomic::Ordering;
   2 use std::collections::LinkedList;
   3 use std::sync::{Arc, Mutex};
   4 use std::io::Write;
   5
   6 use crate::datastore::{Store, AddressState, U64Setting, RegexSetting};
   7
   8 use crate::START_SHUTDOWN;
   9
  10 pub enum Stat {
  11         HeaderCount(u64),
  12         NewConnection,
  13         ConnectionClosed,
  14         V4RoutingTableSize(usize),
  15         V6RoutingTableSize(usize),
  16 }
  17
  18 struct Stats {
  19         lines: LinkedList<String>,
  20         header_count: u64,
  21         connection_count: u64,
  22         v4_table_size: usize,
  23         v6_table_size: usize,
  24 }
  25
  26 pub struct Printer {
  27         stats: Arc<Mutex<Stats>>,
  28 }
  29
  30 impl Printer {
  31         pub fn new(store: &'static Store) -> Printer {
  32                 let stats: Arc<Mutex<Stats>> = Arc::new(Mutex::new(Stats {
  33                         lines: LinkedList::new(),
  34                         header_count: 0,
  35                         connection_count: 0,
  36                         v4_table_size: 0,
  37                         v6_table_size: 0,
  38                 }));
  39                 let thread_arc = Arc::clone(&stats);
  40                 std::thread::spawn(move || {
  41                         loop {
  42                                 std::thread::sleep(std::time::Duration::from_secs(1));
  43
  44                                 let stdout = std::io::stdout();
  45                                 let mut out = stdout.lock();
  46
  47                                 let stats = thread_arc.lock().unwrap();
  48                                 if START_SHUTDOWN.load(Ordering::Relaxed) && stats.connection_count == 0 {
  49                                         break;
  50                                 }
  51
  52                                 out.write_all(b"\x1b[2J\x1b[;H\n").expect("stdout broken?");
  53                                 for line in stats.lines.iter() {
  54                                         out.write_all(line.as_bytes()).expect("stdout broken?");
  55                                         out.write_all(b"\n").expect("stdout broken?");
  56                                 }
  57
  58                                 out.write_all(b"\nNode counts by status:\n").expect("stdout broken?");
  59                                 for i in 0..AddressState::get_count() {
  60                                         out.write_all(format!("{:22}: {}\n", AddressState::from_num(i).unwrap().to_str(),
  61                                                         store.get_node_count(AddressState::from_num(i).unwrap())
  62                                                         ).as_bytes()).expect("stdout broken?");
  63                                 }
  64
  65                                 out.write_all(format!(
  66                                                 "\nCurrent connections open/in progress: {}\n", stats.connection_count).as_bytes()).expect("stdout broken?");
  67                                 out.write_all(format!(
  68                                                 "Connections opened each second: {} (\"c x\" to change to x seconds)\n", store.get_u64(U64Setting::ConnsPerSec)
  69                                                 ).as_bytes()).expect("stdout broken?");
  70                                 out.write_all(format!(
  71                                                 "Current block count: {}\n", stats.header_count).as_bytes()).expect("stdout broken?");
  72
  73                                 out.write_all(format!(
  74                                                 "Timeout for full run (in seconds): {} (\"t x\" to change to x seconds)\n", store.get_u64(U64Setting::RunTimeout)
  75                                                 ).as_bytes()).expect("stdout broken?");
  76                                 out.write_all(format!(
  77                                                 "Minimum protocol version: {} (\"v x\" to change value to x)\n", store.get_u64(U64Setting::MinProtocolVersion)
  78                                                 ).as_bytes()).expect("stdout broken?");
  79                                 out.write_all(format!(
  80                                                 "Subversion match regex: {} (\"s x\" to change value to x)\n", store.get_regex(RegexSetting::SubverRegex).as_str()
  81                                                 ).as_bytes()).expect("stdout broken?");
  82
  83                                 out.write_all(b"\nRetry times (in seconds):\n").expect("stdout broken?");
  84                                 for i in 0..AddressState::get_count() {
  85                                         let scan_secs = store.get_u64(U64Setting::RescanInterval(AddressState::from_num(i).unwrap()));
  86                                         out.write_all(format!(
  87                                                         "{:22} ({:2}): {:5} (ie {} hrs, {} min)\n", AddressState::from_num(i).unwrap().to_str(), i,
  88                                                         scan_secs, scan_secs / 60 / 60, (scan_secs / 60) % 60,
  89                                                         ).as_bytes()).expect("stdout broken?");
  90                                 }
  91
  92                                 out.write_all(format!(
  93                                                 "\nBGP Routing Table: {} v4 paths, {} v6 paths\n",
  94                                                 stats.v4_table_size, stats.v6_table_size).as_bytes()).expect("stdout broken?");
  95
  96                                 out.write_all(b"\nCommands:\n").expect("stdout broken?");
  97                                 out.write_all(b"q: quit\n").expect("stdout broken?");
  98                                 out.write_all(format!(
  99                                                 "r x y: Change retry time for status x (int value, see retry times section for name mappings) to y (in seconds)\n"
 100                                                 ).as_bytes()).expect("stdout broken?");
 101                                 out.write_all(format!(
 102                                                 "w x: Change the amount of time a node is considered WAS_GOOD after it fails to x from {} (in seconds)\n",
 103                                                 store.get_u64(U64Setting::WasGoodTimeout)
 104                                                 ).as_bytes()).expect("stdout broken?");
 105                                 out.write_all(b"a x: Scan node x\n").expect("stdout broken?");
 106                                 out.write_all(b"b x: BGP Lookup IP x\n").expect("stdout broken?");
 107                                 out.write_all(b"\x1b[s").expect("stdout broken?"); // Save cursor position and provide a blank line before cursor
 108                                 out.write_all(b"\x1b[;H\x1b[2K").expect("stdout broken?");
 109                                 out.write_all(b"Most recent log:\n").expect("stdout broken?");
 110                                 out.write_all(b"\x1b[u").expect("stdout broken?"); // Restore cursor position and go up one line
 111
 112                                 out.flush().expect("stdout broken?");
 113                         }
 114                 });
 115                 Printer {
 116                         stats,
 117                 }
 118         }
 119
 120         pub fn add_line(&self, line: String, err: bool) {
 121                 let mut stats = self.stats.lock().unwrap();
 122                 if err {
 123                         stats.lines.push_back("\x1b[31m".to_string() + &line + "\x1b[0m");
 124                 } else {
 125                         stats.lines.push_back(line);
 126                 }
 127                 if stats.lines.len() > 75 {
 128                         stats.lines.pop_front();
 129                 }
 130         }
 131
 132         pub fn set_stat(&self, s: Stat) {
 133                 match s {
 134                         Stat::HeaderCount(c) => self.stats.lock().unwrap().header_count = c,
 135                         Stat::NewConnection => self.stats.lock().unwrap().connection_count += 1,
 136                         Stat::ConnectionClosed => self.stats.lock().unwrap().connection_count -= 1,
 137                         Stat::V4RoutingTableSize(c) => self.stats.lock().unwrap().v4_table_size = c,
 138                         Stat::V6RoutingTableSize(c) => self.stats.lock().unwrap().v6_table_size = c,
 139                 }
 140         }
 141 }