Mercurial > hg
annotate rust/rhg/src/blackbox.rs @ 50764:8ff187fbbfea
rust-config: add config getters that don't fall back to defaults
This is useful in cases where we access config items that are more... lenient
with their types than a fresh new system would allow.
For now there is only a single use of this, but we might get more later.
author | Raphaël Gomès <rgomes@octobus.net> |
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date | Mon, 13 Feb 2023 18:11:48 +0100 |
parents | d39ac3468ad4 |
children | 7f8f6fe13fa9 |
rev | line source |
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1 //! Logging for repository events, including commands run in the repository. |
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2 |
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3 use crate::CliInvocation; |
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4 use format_bytes::format_bytes; |
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5 use hg::errors::HgError; |
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6 use hg::repo::Repo; |
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7 use hg::utils::{files::get_bytes_from_os_str, shell_quote}; |
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8 use std::ffi::OsString; |
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9 |
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10 const ONE_MEBIBYTE: u64 = 1 << 20; |
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11 |
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12 // TODO: somehow keep defaults in sync with `configitem` in `hgext/blackbox.py` |
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13 const DEFAULT_MAX_SIZE: u64 = ONE_MEBIBYTE; |
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14 const DEFAULT_MAX_FILES: u32 = 7; |
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15 |
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16 // Python does not support %.3f, only %f |
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17 const DEFAULT_DATE_FORMAT: &str = "%Y-%m-%d %H:%M:%S%.3f"; |
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18 |
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19 type DateTime = chrono::DateTime<chrono::Local>; |
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20 |
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21 pub struct ProcessStartTime { |
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22 /// For measuring duration |
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23 monotonic_clock: std::time::Instant, |
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24 /// For formatting with year, month, day, etc. |
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25 calendar_based: DateTime, |
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26 } |
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27 |
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28 impl ProcessStartTime { |
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29 pub fn now() -> Self { |
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30 Self { |
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31 monotonic_clock: std::time::Instant::now(), |
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32 calendar_based: chrono::Local::now(), |
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33 } |
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34 } |
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35 } |
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36 |
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37 pub struct Blackbox<'a> { |
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38 process_start_time: &'a ProcessStartTime, |
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39 /// Do nothing if this is `None` |
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40 configured: Option<ConfiguredBlackbox<'a>>, |
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41 } |
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42 |
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43 struct ConfiguredBlackbox<'a> { |
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44 repo: &'a Repo, |
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45 max_size: u64, |
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46 max_files: u32, |
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47 date_format: &'a str, |
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48 } |
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49 |
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50 impl<'a> Blackbox<'a> { |
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51 pub fn new( |
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52 invocation: &'a CliInvocation<'a>, |
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53 process_start_time: &'a ProcessStartTime, |
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54 ) -> Result<Self, HgError> { |
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55 let configured = if let Ok(repo) = invocation.repo { |
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56 if invocation.config.get(b"extensions", b"blackbox").is_none() { |
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57 // The extension is not enabled |
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58 None |
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59 } else { |
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60 Some(ConfiguredBlackbox { |
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61 repo, |
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62 max_size: invocation |
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63 .config |
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64 .get_byte_size(b"blackbox", b"maxsize")? |
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65 .unwrap_or(DEFAULT_MAX_SIZE), |
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66 max_files: invocation |
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67 .config |
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68 .get_u32(b"blackbox", b"maxfiles")? |
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69 .unwrap_or(DEFAULT_MAX_FILES), |
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70 date_format: invocation |
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71 .config |
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72 .get_str(b"blackbox", b"date-format")? |
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73 .unwrap_or(DEFAULT_DATE_FORMAT), |
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74 }) |
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75 } |
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76 } else { |
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77 // Without a local repository there’s no `.hg/blackbox.log` to |
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78 // write to. |
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79 None |
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80 }; |
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81 Ok(Self { |
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82 process_start_time, |
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83 configured, |
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84 }) |
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85 } |
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86 |
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87 pub fn log_command_start<'arg>( |
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88 &self, |
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89 argv: impl Iterator<Item = &'arg OsString>, |
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90 ) { |
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91 if let Some(configured) = &self.configured { |
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92 let message = format_bytes!(b"(rust) {}", format_cli_args(argv)); |
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93 configured.log(&self.process_start_time.calendar_based, &message); |
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94 } |
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95 } |
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96 |
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97 pub fn log_command_end<'arg>( |
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98 &self, |
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99 argv: impl Iterator<Item = &'arg OsString>, |
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100 exit_code: i32, |
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101 ) { |
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102 if let Some(configured) = &self.configured { |
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103 let now = chrono::Local::now(); |
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104 let duration = self |
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105 .process_start_time |
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106 .monotonic_clock |
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107 .elapsed() |
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108 .as_secs_f64(); |
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109 let message = format_bytes!( |
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110 b"(rust) {} exited {} after {} seconds", |
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111 format_cli_args(argv), |
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112 exit_code, |
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113 format_bytes::Utf8(format_args!("{:.03}", duration)) |
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114 ); |
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115 configured.log(&now, &message); |
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116 } |
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117 } |
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118 } |
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119 |
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120 impl ConfiguredBlackbox<'_> { |
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121 fn log(&self, date_time: &DateTime, message: &[u8]) { |
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122 let date = format_bytes::Utf8(date_time.format(self.date_format)); |
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123 let user = get_bytes_from_os_str(whoami::username_os()); |
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124 let rev = format_bytes::Utf8(match self.repo.dirstate_parents() { |
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125 Ok(parents) if parents.p2 == hg::revlog::node::NULL_NODE => { |
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126 format!("{:x}", parents.p1) |
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127 } |
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128 Ok(parents) => format!("{:x}+{:x}", parents.p1, parents.p2), |
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129 Err(_dirstate_corruption_error) => { |
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130 // TODO: log a non-fatal warning to stderr |
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131 "???".to_owned() |
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132 } |
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133 }); |
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134 let pid = std::process::id(); |
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135 let line = format_bytes!( |
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136 b"{} {} @{} ({})> {}\n", |
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137 date, |
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138 user, |
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139 rev, |
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140 pid, |
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141 message |
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142 ); |
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143 let result = |
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144 hg::logging::LogFile::new(self.repo.hg_vfs(), "blackbox.log") |
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145 .max_size(Some(self.max_size)) |
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146 .max_files(self.max_files) |
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147 .write(&line); |
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148 match result { |
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149 Ok(()) => {} |
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150 Err(_io_error) => { |
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151 // TODO: log a non-fatal warning to stderr |
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152 } |
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153 } |
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154 } |
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155 } |
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156 |
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157 fn format_cli_args<'a>( |
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158 mut args: impl Iterator<Item = &'a OsString>, |
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159 ) -> Vec<u8> { |
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160 let _ = args.next(); // Skip the first (or zeroth) arg, the name of the `rhg` executable |
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161 let mut args = args.map(|arg| shell_quote(&get_bytes_from_os_str(arg))); |
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162 let mut formatted = Vec::new(); |
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163 if let Some(arg) = args.next() { |
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164 formatted.extend(arg) |
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165 } |
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166 for arg in args { |
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167 formatted.push(b' '); |
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168 formatted.extend(arg) |
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169 } |
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170 formatted |
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171 } |