net_shell/ssh/
mod.rs

1pub mod local;
2
3use anyhow::{Context, Error, Result};
4use ssh2::Session;
5use std::fs;
6use std::io::{BufRead, BufReader};
7use std::net::TcpStream;
8use std::path::Path;
9use std::sync::Arc;
10use std::sync::mpsc;
11use std::time::{Duration};
12use tokio::sync::mpsc as tokio_mpsc;
13use tracing::info;
14
15use crate::models::{ExecutionResult, SshConfig, OutputEvent, OutputType, OutputCallback};
16use crate::Step;
17use crate::vars::VariableManager;
18use crate::ExtractRule;
19
20/// SSH执行器
21pub struct SshExecutor;
22
23impl SshExecutor {
24    /// 通过SSH执行脚本（支持实时输出）
25    pub fn execute_script_with_realtime_output(
26        script: Option<String>,
27        global_scripts:Arc<Vec<String>>,
28        server_name: &str,
29        ssh_config: &SshConfig, 
30        step: &Step,
31        pipeline_name: &str,
32        step_name: &str,
33        output_callback: Option<OutputCallback>,
34        mut variable_manager: VariableManager,
35        extract_rules: Option<Vec<ExtractRule>>
36    ) -> Result<ExecutionResult> {
37        info!("Connecting to {}:{} as {}", ssh_config.host, ssh_config.port, ssh_config.username);
38
39        // 只用step.script作为脚本路径，不做参数处理
40        let script_path = step.script.as_str(); 
41
42        // 读取本地脚本内容并替换变量
43        let script_content = std::fs::read_to_string(script_path)
44            .context(format!("Failed to read script file: {}", script_path))?;
45
46        let mut gloabl_script_content = global_scripts.iter()
47        .map(|v|std::fs::read_to_string(v).context(format!("read file:[{}]", v)))
48        .fold(Ok("".to_string()), |p:Result<String>,v|{
49            if p.is_err(){
50                return p;
51            }
52
53            if v.is_err(){
54                return Err(Error::msg(format!("{:?}", v.err())));
55            }
56            let content = v.unwrap();
57
58            let mut s = p.unwrap_or_default();
59
60            s.push_str("\n");
61            s.push_str(&content);
62
63            return  Ok(s.clone());
64        })?;
65
66        if let Some(script_header) = script {
67            let cont =  fs::read_to_string(&script_header)
68                .map_err(|e| anyhow::anyhow!("Failed to read script header file '{}': {}", script_header, e))?;
69            gloabl_script_content.push_str("\n");
70            gloabl_script_content.push_str(&cont);
71        }
72
73        gloabl_script_content.push_str("\n");
74        gloabl_script_content.push_str(&script_content);
75
76        let script_content = gloabl_script_content.clone();
77
78        variable_manager.set_variable("ssh_server_name".to_string(), server_name.to_string());
79        variable_manager.set_variable("ssh_server_ip".to_string(), ssh_config.host.to_string());
80
81        let script_content = variable_manager.replace_variables(&script_content);
82
83        // 设置连接超时
84        let ssh_timeout_seconds = ssh_config.timeout_seconds.unwrap_or(3);
85        let ssh_timeout_duration = Duration::from_secs(ssh_timeout_seconds);
86
87        // 建立TCP连接（带严格超时）
88        let tcp = connect_with_timeout(&format!("{}:{}", ssh_config.host, ssh_config.port), ssh_timeout_duration)
89            .context("Failed to connect to SSH server")?;
90
91        let timeout_duration = Duration::from_secs(step.timeout_seconds.unwrap_or(30));
92        
93        // 设置TCP连接超时
94        tcp.set_read_timeout(Some(timeout_duration))
95            .context("Failed to set read timeout")?;
96        tcp.set_write_timeout(Some(timeout_duration))
97            .context("Failed to set write timeout")?;
98        tcp.set_nodelay(true)
99            .context("Failed to set TCP nodelay")?;
100
101        // 创建SSH会话
102        let mut sess = Session::new()
103            .context("Failed to create SSH session")?;
104        
105        sess.set_tcp_stream(tcp);
106        
107        // 设置SSH会话超时（使用步骤级别的超时，如果没有则使用默认值）
108        let session_timeout_seconds = step.timeout_seconds.unwrap_or(30);
109        let session_timeout_duration = Duration::from_secs(session_timeout_seconds);
110        sess.set_timeout(session_timeout_duration.as_millis() as u32);
111        
112        // SSH握手（带超时）
113        sess.handshake()
114            .context(format!("SSH handshake failed: timeout {} s", ssh_timeout_seconds))?;
115
116        info!("SSH handshake completed, starting authentication");
117
118        // 认证（带超时）
119        let auth_result = if let Some(ref password) = ssh_config.password {
120            sess.userauth_password(&ssh_config.username, password)
121                .context("SSH password authentication failed")
122        } else if let Some(ref key_path) = ssh_config.private_key_path {
123            sess.userauth_pubkey_file(&ssh_config.username, None, Path::new(key_path), None)
124                .context("SSH key authentication failed")
125        } else {
126            Err(anyhow::anyhow!("No authentication method provided"))
127        };
128
129        auth_result?;
130        info!("SSH authentication successful");
131
132        // 打开远程shell
133        let mut channel = sess.channel_session()
134            .context("Failed to create SSH channel")?;
135        channel.exec("bash")
136            .context("Failed to exec remote shell")?;
137
138        // 把脚本内容写入远程shell的stdin
139        use std::io::Write;
140        channel.write_all(script_content.as_bytes())
141            .context("Failed to write script to remote shell")?;
142        channel.send_eof()
143            .context("Failed to send EOF to remote shell")?;
144
145        // 创建通道用于实时输出
146        let (tx, mut rx) = tokio_mpsc::channel::<OutputEvent>(100);
147        let output_callback = output_callback.map(|cb| Arc::new(cb));
148
149        // 在单独的线程中处理实时输出
150        let server_name = server_name.to_string();
151        let _step_name = step_name.to_string();
152        let pipeline_name = pipeline_name.to_string();
153        let output_callback_clone = output_callback.clone();
154        
155        let output_handle = std::thread::spawn(move || {
156            while let Some(event) = rx.blocking_recv() {
157                if let Some(callback) = &output_callback_clone {
158                    callback(event);
159                }
160            }
161        });
162
163        // 读取stdout和stderr
164        let mut stdout = String::new();
165        let mut stderr = String::new();
166        let start_time = std::time::Instant::now();
167
168        // 实时读取stdout
169        let stdout_stream = channel.stream(0);
170        let mut stdout_reader = BufReader::new(stdout_stream);
171        let mut line = String::new();
172        
173        while stdout_reader.read_line(&mut line)? > 0 {
174            let content = line.clone();
175            stdout.push_str(&content);
176            
177            // 发送实时输出事件
178            let event = OutputEvent {
179                pipeline_name: pipeline_name.clone(),
180                server_name: server_name.clone(),
181                step: step.clone(), // 传递完整的Step对象
182                script_path:step.script.to_string(),
183                output_type: OutputType::Stdout,
184                content: content.trim().to_string(),
185                timestamp: std::time::Instant::now(),
186                variables: variable_manager.get_variables().clone(),
187            };
188            
189            if tx.blocking_send(event).is_err() {
190                break;
191            }
192            
193            line.clear();
194        }
195
196        // 实时读取stderr
197        let stderr_stream = channel.stderr();
198        let mut stderr_reader = BufReader::new(stderr_stream);
199        line.clear();
200        
201        while stderr_reader.read_line(&mut line)? > 0 {
202            let content = line.clone();
203            stderr.push_str(&content);
204            
205            // 发送实时输出事件
206            let event = OutputEvent {
207                pipeline_name: pipeline_name.clone(),
208                server_name: server_name.clone(),
209                step: step.clone(), // 传递完整的Step对象
210                script_path:step.script.to_string(),
211                output_type: OutputType::Stderr,
212                content: content.trim().to_string(),
213                timestamp: std::time::Instant::now(),
214                variables: variable_manager.get_variables().clone(),
215            };
216            
217            if tx.blocking_send(event).is_err() {
218                break;
219            }
220            
221            line.clear();
222        }
223
224        // 等待通道关闭
225        drop(tx);
226        if let Err(e) = output_handle.join() {
227            eprintln!("Output handler thread error: {:?}", e);
228        }
229
230        channel.wait_close()
231            .context("Failed to wait for channel close")?;
232
233        let exit_code = channel.exit_status()
234            .context("Failed to get exit status")?;
235
236        let execution_time = start_time.elapsed().as_millis() as u64;
237        info!("SSH command executed with exit code: {}", exit_code);
238
239        // 创建执行结果
240        let execution_result = ExecutionResult {
241            success: exit_code == 0,
242            stdout,
243            stderr,
244            script: step.script.to_string(),
245            exit_code,
246            execution_time_ms: execution_time,
247            error_message: None,
248        };
249
250        // 提取变量
251        if let Some(rules) = extract_rules {
252            if let Err(e) = variable_manager.extract_variables(&rules, &execution_result) {
253                info!("Failed to extract variables: {}", e);
254            }
255        }
256
257        Ok(execution_result)
258    }
259
260}
261
262/// 工具函数：带超时的TCP连接
263fn connect_with_timeout(addr: &str, timeout: Duration) -> std::io::Result<TcpStream> {
264    let (tx, rx) = mpsc::channel();
265    let addr = addr.to_string();
266    let error_message = format!("connect to {} timeout {} s", addr, timeout.as_secs());
267    std::thread::spawn(move || {
268        let res = TcpStream::connect(addr);
269        let _ = tx.send(res);
270    });
271    rx.recv_timeout(timeout).unwrap_or_else(|_| Err(std::io::Error::new(std::io::ErrorKind::TimedOut, error_message)))
272}
net_shell/ssh/mod.rs

net_shell/ssh/
mod.rs
