_ 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         RoutingTablePaths(usize),
  17 }
  18
  19 struct Stats {
  20         lines: LinkedList<String>,
  21         header_count: u64,
  22         connection_count: u64,
  23         v4_table_size: usize,
  24         v6_table_size: usize,
  25         paths: usize,
  26 }
  27
  28 pub struct Printer {
  29         stats: Arc<Mutex<Stats>>,
  30 }
  31
  32 impl Printer {
  33         pub fn new(store: &'static Store) -> Printer {
  34                 let stats: Arc<Mutex<Stats>> = Arc::new(Mutex::new(Stats {
  35                         lines: LinkedList::new(),
  36                         header_count: 0,
  37                         connection_count: 0,
  38                         v4_table_size: 0,
  39                         v6_table_size: 0,
  40                         paths: 0,
  41                 }));
  42                 let thread_arc = Arc::clone(&stats);
  43                 std::thread::spawn(move || {
  44                         loop {
  45                                 std::thread::sleep(std::time::Duration::from_secs(1));
  46
  47                                 let stdout = std::io::stdout();
  48                                 let mut out = stdout.lock();
  49
  50                                 {
  51                                         let stats = thread_arc.lock().unwrap();
  52                                         if START_SHUTDOWN.load(Ordering::Relaxed) && stats.connection_count == 0 {
  53                                                 break;
  54                                         }
  55
  56                                         out.write_all(b"\x1b[2J\x1b[;H\n").expect("stdout broken?");
  57                                         for line in stats.lines.iter() {
  58                                                 out.write_all(line.as_bytes()).expect("stdout broken?");
  59                                                 out.write_all(b"\n").expect("stdout broken?");
  60                                         }
  61
  62                                         out.write_all(b"\nNode counts by status:\n").expect("stdout broken?");
  63                                         for i in 0..AddressState::get_count() {
  64                                                 out.write_all(format!("{:22}: {}\n", AddressState::from_num(i).unwrap().to_str(),
  65                                                                 store.get_node_count(AddressState::from_num(i).unwrap())
  66                                                                 ).as_bytes()).expect("stdout broken?");
  67                                         }
  68
  69                                         out.write_all(format!(
  70                                                         "\nCurrent connections open/in progress: {}\n", stats.connection_count).as_bytes()).expect("stdout broken?");
  71                                         out.write_all(format!(
  72                                                         "Current block count: {}\n", stats.header_count).as_bytes()).expect("stdout broken?");
  73
  74                                         out.write_all(format!(
  75                                                         "Timeout for full run (in seconds): {} (\"t x\" to change to x seconds)\n", store.get_u64(U64Setting::RunTimeout)
  76                                                         ).as_bytes()).expect("stdout broken?");
  77                                         out.write_all(format!(
  78                                                         "Minimum protocol version: {} (\"v x\" to change value to x)\n", store.get_u64(U64Setting::MinProtocolVersion)
  79                                                         ).as_bytes()).expect("stdout broken?");
  80                                         out.write_all(format!(
  81                                                         "Subversion match regex: {} (\"s x\" to change value to x)\n", store.get_regex(RegexSetting::SubverRegex).as_str()
  82                                                         ).as_bytes()).expect("stdout broken?");
  83
  84                                         out.write_all(b"\nRetry times (in seconds):\n").expect("stdout broken?");
  85                                         for i in 0..AddressState::get_count() {
  86                                                 let scan_secs = store.get_u64(U64Setting::RescanInterval(AddressState::from_num(i).unwrap()));
  87                                                 out.write_all(format!(
  88                                                                 "{:22} ({:2}): {:5} (ie {} hrs, {} min)\n", AddressState::from_num(i).unwrap().to_str(), i,
  89                                                                 scan_secs, scan_secs / 60 / 60, (scan_secs / 60) % 60,
  90                                                                 ).as_bytes()).expect("stdout broken?");
  91                                         }
  92
  93                                         out.write_all(format!(
  94                                                         "\nBGP Routing Table: {} v4 nets, {} v6 nets, {} max paths\n",
  95                                                         stats.v4_table_size, stats.v6_table_size, stats.paths).as_bytes()).expect("stdout broken?");
  96
  97                                         out.write_all(b"\nCommands:\n").expect("stdout broken?");
  98                                         out.write_all(b"q: quit\n").expect("stdout broken?");
  99                                         out.write_all(format!(
 100                                                         "r x y: Change retry time for status x (int value, see retry times section for name mappings) to y (in seconds)\n"
 101                                                         ).as_bytes()).expect("stdout broken?");
 102                                         out.write_all(format!(
 103                                                         "w x: Change the amount of time a node is considered WAS_GOOD after it fails to x from {} (in seconds)\n",
 104                                                         store.get_u64(U64Setting::WasGoodTimeout)
 105                                                         ).as_bytes()).expect("stdout broken?");
 106                                         out.write_all(b"a x: Scan node x\n").expect("stdout broken?");
 107                                         out.write_all(b"b x: BGP Lookup IP x\n").expect("stdout broken?");
 108                                         out.write_all(b"\x1b[s").expect("stdout broken?"); // Save cursor position and provide a blank line before cursor
 109                                         out.write_all(b"\x1b[;H\x1b[2K").expect("stdout broken?");
 110                                         out.write_all(b"Most recent log:\n").expect("stdout broken?");
 111                                         out.write_all(b"\x1b[u").expect("stdout broken?"); // Restore cursor position and go up one line
 112                                 }
 113
 114                                 out.flush().expect("stdout broken?");
 115                         }
 116                 });
 117                 Printer {
 118                         stats,
 119                 }
 120         }
 121
 122         pub fn add_line(&self, line: String, err: bool) {
 123                 let mut stats = self.stats.lock().unwrap();
 124                 if err {
 125                         stats.lines.push_back("\x1b[31m".to_string() + &line + "\x1b[0m");
 126                 } else {
 127                         stats.lines.push_back(line);
 128                 }
 129                 if stats.lines.len() > 75 {
 130                         stats.lines.pop_front();
 131                 }
 132         }
 133
 134         pub fn set_stat(&self, s: Stat) {
 135                 match s {
 136                         Stat::HeaderCount(c) => self.stats.lock().unwrap().header_count = c,
 137                         Stat::NewConnection => self.stats.lock().unwrap().connection_count += 1,
 138                         Stat::ConnectionClosed => self.stats.lock().unwrap().connection_count -= 1,
 139                         Stat::V4RoutingTableSize(c) => self.stats.lock().unwrap().v4_table_size = c,
 140                         Stat::V6RoutingTableSize(c) => self.stats.lock().unwrap().v6_table_size = c,
 141                         Stat::RoutingTablePaths(c) => self.stats.lock().unwrap().paths = c,
 142                 }
 143         }
 144 }