| 1 |
yuzu |
7 |
use serde::{Deserialize, Serialize}; |
| 2 |
|
|
|
| 3 |
|
|
use std::{ |
| 4 |
|
|
fs::canonicalize, |
| 5 |
|
|
io::{Read, BufRead, BufReader}, |
| 6 |
|
|
path::PathBuf, |
| 7 |
|
|
process::{Child, Command, Stdio}, |
| 8 |
|
|
sync::{Arc, Mutex}, |
| 9 |
|
|
}; |
| 10 |
|
|
|
| 11 |
|
|
#[derive(Serialize, Deserialize, Clone, Debug)] |
| 12 |
|
|
pub struct ServiceConf { |
| 13 |
|
|
pub name: String, |
| 14 |
|
|
command: String, |
| 15 |
|
|
args: Option<String>, |
| 16 |
|
|
directory: Option<PathBuf>, |
| 17 |
|
|
pub autostart: bool, |
| 18 |
|
|
} |
| 19 |
|
|
impl ServiceConf { |
| 20 |
|
|
pub fn new() -> Self { |
| 21 |
|
|
Self { |
| 22 |
|
|
name: String::new(), |
| 23 |
|
|
command: String::new(), |
| 24 |
|
|
args: None, |
| 25 |
|
|
directory: None, |
| 26 |
|
|
autostart: false, |
| 27 |
|
|
} |
| 28 |
|
|
} |
| 29 |
|
|
pub fn from_parts( |
| 30 |
|
|
name: String, |
| 31 |
|
|
command: String, |
| 32 |
|
|
args: Option<String>, |
| 33 |
|
|
directory: Option<PathBuf>, |
| 34 |
|
|
autostart: bool, |
| 35 |
|
|
) -> Self { |
| 36 |
|
|
Self { |
| 37 |
|
|
name, |
| 38 |
|
|
command, |
| 39 |
|
|
args, |
| 40 |
|
|
directory, |
| 41 |
|
|
autostart, |
| 42 |
|
|
} |
| 43 |
|
|
} |
| 44 |
|
|
} |
| 45 |
|
|
|
| 46 |
|
|
#[derive(Debug)] |
| 47 |
|
|
pub struct Service { |
| 48 |
|
|
pub config: ServiceConf, |
| 49 |
|
|
process: Option<Mutex<Child>>, |
| 50 |
|
|
} |
| 51 |
|
|
impl Service { |
| 52 |
|
|
pub fn new() -> Self { |
| 53 |
|
|
Self { |
| 54 |
|
|
config: ServiceConf::new(), |
| 55 |
|
|
process: None, |
| 56 |
|
|
} |
| 57 |
|
|
} |
| 58 |
|
|
pub fn from_conf(config: ServiceConf) -> Self { |
| 59 |
|
|
Self { |
| 60 |
|
|
config, |
| 61 |
|
|
process: None, |
| 62 |
|
|
} |
| 63 |
|
|
} |
| 64 |
|
|
pub fn start(&mut self) -> Result<(), Box<dyn std::error::Error>> { |
| 65 |
|
|
if self.process.is_some() { |
| 66 |
|
|
return Err(Box::new(std::io::Error::new( |
| 67 |
|
|
std::io::ErrorKind::AlreadyExists, |
| 68 |
|
|
"process already exists!", |
| 69 |
|
|
))); |
| 70 |
|
|
} |
| 71 |
|
|
let command: &str = &self.config.command.as_str(); |
| 72 |
|
|
let args: Vec<String> = if let Some(a) = &self.config.args { |
| 73 |
|
|
let mut v: Vec<String> = Vec::new(); |
| 74 |
|
|
for arg in a.split_whitespace() { |
| 75 |
|
|
v.push(String::from(arg)); |
| 76 |
|
|
} |
| 77 |
|
|
v |
| 78 |
|
|
} else { |
| 79 |
|
|
Vec::new() |
| 80 |
|
|
}; |
| 81 |
|
|
if let Some(cwd) = &self.config.directory { |
| 82 |
|
|
let child = Command::new(command) |
| 83 |
|
|
.args(args) |
| 84 |
|
|
.current_dir(canonicalize(cwd)?) |
| 85 |
|
|
.stdin(Stdio::piped()) |
| 86 |
|
|
.stdout(Stdio::piped()) |
| 87 |
|
|
.stderr(Stdio::piped()) |
| 88 |
|
|
.spawn()?; |
| 89 |
|
|
self.process = Some(Mutex::new(child)); |
| 90 |
|
|
} else { |
| 91 |
|
|
let child = Command::new(command) |
| 92 |
|
|
.args(args) |
| 93 |
|
|
.stdin(Stdio::piped()) |
| 94 |
|
|
.stdout(Stdio::piped()) |
| 95 |
|
|
.stderr(Stdio::piped()) |
| 96 |
|
|
.spawn()?; |
| 97 |
|
|
self.process = Some(Mutex::new(child)); |
| 98 |
|
|
}; |
| 99 |
|
|
Ok(()) |
| 100 |
|
|
} |
| 101 |
|
|
pub fn stop(&mut self) -> Result<(), Box<dyn std::error::Error>> { |
| 102 |
|
|
if let Some(process) = &self.process { |
| 103 |
|
|
if let Ok(mut process) = process.lock() { |
| 104 |
|
|
process.kill()?; |
| 105 |
|
|
} else { |
| 106 |
|
|
return Err(Box::new(std::io::Error::new( |
| 107 |
|
|
std::io::ErrorKind::ResourceBusy, |
| 108 |
|
|
"cannot acquire lock", |
| 109 |
|
|
))) |
| 110 |
|
|
} |
| 111 |
|
|
} else { |
| 112 |
|
|
return Err(Box::new(std::io::Error::new( |
| 113 |
|
|
std::io::ErrorKind::NotFound, |
| 114 |
|
|
"process already exists!", |
| 115 |
|
|
))); |
| 116 |
|
|
}; |
| 117 |
|
|
self.process = None; |
| 118 |
|
|
Ok(()) |
| 119 |
|
|
} |
| 120 |
|
|
//TODO: this function needs to fork and do message passing via mpsc channels. |
| 121 |
|
|
pub fn stdout(&mut self) -> Result<String, Box<dyn std::error::Error>> { |
| 122 |
|
|
if let Some(process) = &mut self.process { |
| 123 |
|
|
if let Ok(mut process) = process.lock() { |
| 124 |
|
|
if let Some(stdout) = process.stdout.as_mut() { |
| 125 |
|
|
let reader = BufReader::new(stdout); |
| 126 |
|
|
Ok(String::from(reader.lines().filter_map(|line| line.ok()).collect::<String>())) |
| 127 |
|
|
} else { |
| 128 |
|
|
Err(Box::new(std::io::Error::new( |
| 129 |
|
|
std::io::ErrorKind::ResourceBusy, |
| 130 |
|
|
"cannot acquire stdout", |
| 131 |
|
|
))) |
| 132 |
|
|
} |
| 133 |
|
|
} else { |
| 134 |
|
|
Err(Box::new(std::io::Error::new( |
| 135 |
|
|
std::io::ErrorKind::ResourceBusy, |
| 136 |
|
|
"cannot acquire lock", |
| 137 |
|
|
))) |
| 138 |
|
|
} |
| 139 |
|
|
} else { |
| 140 |
|
|
Err(Box::new(std::io::Error::new( |
| 141 |
|
|
std::io::ErrorKind::NotFound, |
| 142 |
|
|
"is the process started?", |
| 143 |
|
|
))) |
| 144 |
|
|
} |
| 145 |
|
|
} |
| 146 |
|
|
//TODO: this function needs to fork and do message passing via mpsc channels. |
| 147 |
|
|
//TODO: this function needs to use a bufreader instead |
| 148 |
|
|
pub fn stderr(&mut self) -> Result<String, Box<dyn std::error::Error>> { |
| 149 |
|
|
if let Some(process) = &mut self.process { |
| 150 |
|
|
if let Ok(mut process) = process.lock() { |
| 151 |
|
|
let mut s = String::new(); |
| 152 |
|
|
if let Some(stderr) = process.stderr.as_mut() { |
| 153 |
|
|
stderr.read_to_string(&mut s)?; |
| 154 |
|
|
} |
| 155 |
|
|
Ok(s) |
| 156 |
|
|
} else { |
| 157 |
|
|
Err(Box::new(std::io::Error::new( |
| 158 |
|
|
std::io::ErrorKind::ResourceBusy, |
| 159 |
|
|
"cannot acquire lock", |
| 160 |
|
|
))) |
| 161 |
|
|
} |
| 162 |
|
|
} else { |
| 163 |
|
|
Err(Box::new(std::io::Error::new( |
| 164 |
|
|
std::io::ErrorKind::NotFound, |
| 165 |
|
|
"is the process started?", |
| 166 |
|
|
))) |
| 167 |
|
|
} |
| 168 |
|
|
} |
| 169 |
|
|
} |
| 170 |
|
|
|
