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annotate rust/chg/src/clientext.rs @ 45623:426294d06ddc

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rust: move rustfmt.toml to repo root so it can be used by `hg fix` `hg fix` runs the formatters from the repo root so it doesn't pick up the `rustfmt.toml` configs we had in each the `hg-core`, `hg-cpython`, and `rhg` packages, which resulted in warnings about `async fn` not existing in Rust 2015. This patch moves the `rustfmt.toml` file to the root so `hg fix` will use it. By putting the `rustfmt.toml` file in a higher-level directory, it also applies to the `chg` and `hgcli` packages. That makes `test-check-rust-format.t` fail, so this patch also applies the new formatting rules to those packages. Differential Revision: https://phab.mercurial-scm.org/D9142
author Martin von Zweigbergk <martinvonz@google.com>
date Thu, 01 Oct 2020 09:09:35 -0700
parents d6f706929120
children
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1 // Copyright 2018 Yuya Nishihara <yuya@tcha.org>
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2 //
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3 // This software may be used and distributed according to the terms of the
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4 // GNU General Public License version 2 or any later version.
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5
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6 //! cHg extensions to command server client.
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7
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8 use bytes::{BufMut, BytesMut};
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9 use std::ffi::OsStr;
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10 use std::io;
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11 use std::mem;
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12 use std::os::unix::ffi::OsStrExt;
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13 use std::os::unix::io::AsRawFd;
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14 use std::path::Path;
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15 use tokio_hglib::UnixClient;
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16
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17 use crate::attachio;
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18 use crate::message::{self, Instruction, ServerSpec};
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19 use crate::runcommand;
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20 use crate::uihandler::SystemHandler;
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21
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22 /// Command-server client that also supports cHg extensions.
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23 pub struct ChgClient {
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24 client: UnixClient,
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25 }
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26
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27 impl ChgClient {
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28 /// Connects to a command server listening at the specified socket path.
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29 pub async fn connect(path: impl AsRef<Path>) -> io::Result<Self> {
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30 let client = UnixClient::connect(path).await?;
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31 Ok(ChgClient { client })
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32 }
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33
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34 /// Server capabilities, encoding, etc.
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35 pub fn server_spec(&self) -> &ServerSpec {
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36 self.client.server_spec()
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37 }
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38
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39 /// Attaches the client file descriptors to the server.
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40 pub async fn attach_io(
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41 &mut self,
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42 stdin: &impl AsRawFd,
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43 stdout: &impl AsRawFd,
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44 stderr: &impl AsRawFd,
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45 ) -> io::Result<()> {
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46 attachio::attach_io(
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47 self.client.borrow_protocol_mut(),
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48 stdin,
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49 stdout,
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50 stderr,
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51 )
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52 .await
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53 }
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54
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55 /// Changes the working directory of the server.
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56 pub async fn set_current_dir(
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57 &mut self,
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58 dir: impl AsRef<Path>,
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59 ) -> io::Result<()> {
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60 let dir_bytes = dir.as_ref().as_os_str().as_bytes().to_owned();
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61 self.client
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62 .borrow_protocol_mut()
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63 .send_command_with_args("chdir", dir_bytes)
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64 .await
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65 }
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66
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67 /// Updates the environment variables of the server.
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68 pub async fn set_env_vars_os(
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69 &mut self,
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70 vars: impl IntoIterator<Item = (impl AsRef<OsStr>, impl AsRef<OsStr>)>,
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71 ) -> io::Result<()> {
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72 self.client
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73 .borrow_protocol_mut()
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74 .send_command_with_args("setenv", message::pack_env_vars_os(vars))
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75 .await
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76 }
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77
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78 /// Changes the process title of the server.
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79 pub async fn set_process_name(
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80 &mut self,
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81 name: impl AsRef<OsStr>,
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82 ) -> io::Result<()> {
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83 let name_bytes = name.as_ref().as_bytes().to_owned();
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84 self.client
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85 .borrow_protocol_mut()
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86 .send_command_with_args("setprocname", name_bytes)
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87 .await
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88 }
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89
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90 /// Changes the umask of the server process.
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91 pub async fn set_umask(&mut self, mask: u32) -> io::Result<()> {
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92 let mut mask_bytes = BytesMut::with_capacity(mem::size_of_val(&mask));
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93 mask_bytes.put_u32(mask);
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94 self.client
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95 .borrow_protocol_mut()
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96 .send_command_with_args("setumask2", mask_bytes)
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97 .await
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98 }
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99
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100 /// Runs the specified Mercurial command with cHg extension.
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101 pub async fn run_command_chg(
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102 &mut self,
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103 handler: &mut impl SystemHandler,
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104 args: impl IntoIterator<Item = impl AsRef<OsStr>>,
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105 ) -> io::Result<i32> {
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106 runcommand::run_command(
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107 self.client.borrow_protocol_mut(),
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108 handler,
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109 message::pack_args_os(args),
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110 )
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111 .await
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112 }
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113
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114 /// Validates if the server can run Mercurial commands with the expected
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115 /// configuration.
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116 ///
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117 /// The `args` should contain early command arguments such as `--config`
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118 /// and `-R`.
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119 ///
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120 /// Client-side environment must be sent prior to this request, by
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121 /// `set_current_dir()` and `set_env_vars_os()`.
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122 pub async fn validate(
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123 &mut self,
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124 args: impl IntoIterator<Item = impl AsRef<OsStr>>,
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125 ) -> io::Result<Vec<Instruction>> {
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126 let data = self
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127 .client
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128 .borrow_protocol_mut()
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129 .query_with_args("validate", message::pack_args_os(args))
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130 .await?;
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131 message::parse_instructions(data)
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132 }
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133 }