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Format Rust code using rustfmt

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github-actions[bot]
2025-06-27 11:15:08 +00:00
committed by GitHub
parent 971c6176e6
commit 3bebb65dc0
1 changed files with 131 additions and 90 deletions
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221
src/main.rs
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@ -66,12 +66,12 @@ struct Args {
/// Maximum number of parallel SSH connections
#[arg(short, long, default_value_t = 100)]
parallel: i32,
/// Use the embedded SSH client library instead of system SSH command
#[arg(
long,
help = "Use embedded SSH client instead of system SSH. Does not support 'live output'.",
default_value_t = false,
default_value_t = false
)]
embedded_ssh: bool,
}
@ -86,69 +86,69 @@ struct Host {
}
/// Find common domain suffix across all hostnames to simplify output display
///
///
/// This function analyzes all hostnames to identify a common domain suffix
/// which can be shortened during display to improve readability.
///
///
/// # Arguments
/// * `hostnames` - A slice of strings containing all server hostnames
///
///
/// # Returns
/// * `Option<String>` - The common suffix if found, or None
fn find_common_suffix(hostnames: &[String]) -> Option<String> {
if hostnames.is_empty() {
return None;
}
// Don't truncate if only one host
if hostnames.len() == 1 {
return None;
}
let first = &hostnames[0];
// Start with assumption that the entire first hostname is the common suffix
let mut common = first.clone();
// Iterate through remaining hostnames, reducing the common part
for hostname in hostnames.iter().skip(1) {
// Exit early if no common part remains
if common.is_empty() {
return None;
}
// Find common suffix with current hostname
let mut new_common = String::new();
// Search for common suffix by comparing characters from right to left
let mut common_chars = common.chars().rev();
let mut hostname_chars = hostname.chars().rev();
loop {
match (common_chars.next(), hostname_chars.next()) {
(Some(c1), Some(c2)) if c1 == c2 => new_common.insert(0, c1),
_ => break,
}
}
common = new_common;
}
// Ensure the common part is a valid domain suffix (starts with a dot)
if common.is_empty() || !common.starts_with('.') {
return None;
}
// Return the identified common suffix
Some(common)
}
/// Shorten hostname by removing the common suffix and replacing with an asterisk
///
///
/// # Arguments
/// * `hostname` - The original hostname
/// * `common_suffix` - Optional common suffix to remove
///
///
/// # Returns
/// * `String` - Shortened hostname or original if no common suffix
fn shorten_hostname(hostname: &str, common_suffix: &Option<String>) -> String {
@ -156,13 +156,13 @@ fn shorten_hostname(hostname: &str, common_suffix: &Option<String>) -> String {
Some(suffix) if hostname.ends_with(suffix) => {
let short_name = hostname[..hostname.len() - suffix.len()].to_string();
format!("{}{}", short_name, "*")
},
}
_ => hostname.to_string(),
}
}
/// Read and parse the SSH known_hosts file to extract server names
///
///
/// # Returns
/// * `Vec<Host>` - List of hosts found in the known_hosts file
fn read_known_hosts() -> Vec<Host> {
@ -184,11 +184,11 @@ fn read_known_hosts() -> Vec<Host> {
}
/// Expand a numeric range in the format [start:end] to a list of strings
///
///
/// # Arguments
/// * `start` - Starting number (inclusive)
/// * `end` - Ending number (inclusive)
///
///
/// # Returns
/// * `Vec<String>` - List of numbers as strings
fn expand_range(start: i32, end: i32) -> Vec<String> {
@ -196,10 +196,10 @@ fn expand_range(start: i32, end: i32) -> Vec<String> {
}
/// Expand a comma-separated list in the format {item1,item2,item3} to a list of strings
///
///
/// # Arguments
/// * `list` - Comma-separated string to expand
///
///
/// # Returns
/// * `Vec<String>` - List of expanded items
fn expand_list(list: &str) -> Vec<String> {
@ -207,14 +207,14 @@ fn expand_list(list: &str) -> Vec<String> {
}
/// Expand a server pattern string with range and list notation into individual hostnames
///
///
/// Supports two expansion types:
/// - Range expansion: server-[1:5] → server-1, server-2, server-3, server-4, server-5
/// - List expansion: server-{prod,dev} → server-prod, server-dev
///
///
/// # Arguments
/// * `s` - Pattern string to expand
///
///
/// # Returns
/// * `Vec<Host>` - List of expanded Host objects
fn expand_string(s: &str) -> Vec<Host> {
@ -278,46 +278,54 @@ fn expand_string(s: &str) -> Vec<Host> {
}
/// Execute a command on a single host using the system SSH client
///
///
/// This function runs an SSH command using the system's SSH client,
/// capturing and displaying output in real-time with proper formatting.
///
///
/// # Arguments
/// * `hostname` - Target server hostname
/// * `username` - SSH username
/// * `command` - Command to execute
/// * `common_suffix` - Optional common suffix for hostname display formatting
///
///
/// # Returns
/// * `Result<i32, String>` - Exit code on success or error message
fn execute_ssh_command(hostname: &str, username: &str, command: &str, common_suffix: &Option<String>) -> Result<i32, String> {
fn execute_ssh_command(
hostname: &str,
username: &str,
command: &str,
common_suffix: &Option<String>,
) -> Result<i32, String> {
let display_name = shorten_hostname(hostname, common_suffix);
// Display execution start message with shortened hostname
println!("\n{} - STARTED", display_name.yellow().bold());
// Build the SSH command with appropriate options
let mut ssh_cmd = Command::new("ssh");
ssh_cmd.arg("-o").arg("StrictHostKeyChecking=no")
.arg("-o").arg("BatchMode=yes")
.arg(format!("{}@{}", username, hostname))
.arg(command)
.stdout(Stdio::piped())
.stderr(Stdio::piped());
ssh_cmd
.arg("-o")
.arg("StrictHostKeyChecking=no")
.arg("-o")
.arg("BatchMode=yes")
.arg(format!("{}@{}", username, hostname))
.arg(command)
.stdout(Stdio::piped())
.stderr(Stdio::piped());
// Execute the command
let mut child = match ssh_cmd.spawn() {
Ok(child) => child,
Err(e) => return Err(format!("Failed to start SSH process: {}", e)),
};
// Capture and display stdout in real-time using a dedicated thread
let stdout = child.stdout.take().unwrap();
let display_name_stdout = display_name.clone();
let stdout_thread = thread::spawn(move || {
let reader = BufReader::new(stdout);
let prefix = format!("{}", "│".green());
for line in reader.lines() {
match line {
Ok(line) => println!("{} {} - {}", prefix, display_name_stdout.yellow(), line),
@ -325,14 +333,14 @@ fn execute_ssh_command(hostname: &str, username: &str, command: &str, common_suf
}
}
});
// Capture and display stderr in real-time using a dedicated thread
let stderr = child.stderr.take().unwrap();
let display_name_stderr = display_name.clone();
let stderr_thread = thread::spawn(move || {
let reader = BufReader::new(stderr);
let prefix = format!("{}", "║".red());
for line in reader.lines() {
match line {
Ok(line) => println!("{} {} - {}", prefix, display_name_stderr.yellow(), line),
@ -340,17 +348,17 @@ fn execute_ssh_command(hostname: &str, username: &str, command: &str, common_suf
}
}
});
// Wait for command to complete
let status = match child.wait() {
Ok(status) => status,
Err(e) => return Err(format!("Failed to wait for SSH process: {}", e)),
};
// Wait for stdout and stderr threads to complete
stdout_thread.join().unwrap();
stderr_thread.join().unwrap();
// Format exit code with color (green for success, red for failure)
let exit_code = status.code().unwrap_or(-1);
let code_string = if exit_code == 0 {
@ -358,18 +366,22 @@ fn execute_ssh_command(hostname: &str, username: &str, command: &str, common_suf
} else {
format!("{}", exit_code.to_string().red())
};
// Display completion message
println!("{} - COMPLETED (Exit code: [{}])", display_name.yellow().bold(), code_string);
println!(
"{} - COMPLETED (Exit code: [{}])",
display_name.yellow().bold(),
code_string
);
Ok(exit_code)
}
/// Execute commands on multiple hosts using the massh library (embedded SSH)
///
///
/// This function handles batch processing of hosts to maintain the original order
/// while executing commands in parallel using the massh library.
///
///
/// # Arguments
/// * `hosts` - Vector of (hostname, IP address, original index) tuples
/// * `username` - SSH username
@ -377,7 +389,14 @@ fn execute_ssh_command(hostname: &str, username: &str, command: &str, common_suf
/// * `parallel` - Maximum number of parallel connections
/// * `code_only` - Whether to display only exit codes
/// * `common_suffix` - Optional common suffix for hostname display formatting
fn execute_with_massh(hosts: &[(String, IpAddr, usize)], username: &str, command: &str, parallel: i32, code_only: bool, common_suffix: &Option<String>) {
fn execute_with_massh(
hosts: &[(String, IpAddr, usize)],
username: &str,
command: &str,
parallel: i32,
code_only: bool,
common_suffix: &Option<String>,
) {
// Create a lookup table for host data using IP addresses as keys
let mut hosts_and_ips: HashMap<IpAddr, (String, usize)> = HashMap::new();
let mut massh_hosts: Vec<MasshHostConfig> = Vec::new();
@ -398,7 +417,7 @@ fn execute_with_massh(hosts: &[(String, IpAddr, usize)], username: &str, command
while processed < massh_hosts.len() {
let end = std::cmp::min(processed + batch_size, massh_hosts.len());
// Create a new config and vector for this batch
let mut batch_hosts = Vec::new();
for host in &massh_hosts[processed..end] {
@ -409,7 +428,7 @@ fn execute_with_massh(hosts: &[(String, IpAddr, usize)], username: &str, command
user: None,
});
}
// Create a new MasshClient for this batch with appropriate configuration
let batch_config = MasshConfig {
default_auth: SshAuth::Agent,
@ -419,15 +438,15 @@ fn execute_with_massh(hosts: &[(String, IpAddr, usize)], username: &str, command
timeout: 0,
hosts: batch_hosts,
};
let batch_massh = MasshClient::from(&batch_config);
// Execute the command on all hosts in this batch
let rx = batch_massh.execute(command.to_string());
// Collect all results from this batch before moving to the next
let mut batch_results = Vec::new();
while let Ok((host, result)) = rx.recv() {
// Extract IP address from the massh result
let ip: String = host.split('@').collect::<Vec<_>>()[1]
@ -435,7 +454,7 @@ fn execute_with_massh(hosts: &[(String, IpAddr, usize)], username: &str, command
.collect::<Vec<_>>()[0]
.to_string();
let ip = ip.parse::<IpAddr>().unwrap();
// Lookup the original hostname and index
if let Some((hostname, idx)) = hosts_and_ips.get(&ip) {
batch_results.push((hostname.clone(), ip, result, *idx));
@ -443,17 +462,17 @@ fn execute_with_massh(hosts: &[(String, IpAddr, usize)], username: &str, command
error!("Unexpected IP address in result: {}", ip);
}
}
// Sort results by original index to maintain consistent display order
batch_results.sort_by_key(|(_, _, _, idx)| *idx);
// Display results for each host in the batch
for (hostname, _ip, result, _) in batch_results {
let display_name = shorten_hostname(&hostname, common_suffix);
// Display hostname with consistent formatting
println!("\n{}", display_name.yellow().bold().to_string());
// Handle execution result
let output = match result {
Ok(output) => output,
@ -462,14 +481,14 @@ fn execute_with_massh(hosts: &[(String, IpAddr, usize)], username: &str, command
continue;
}
};
// Format exit code with color
let code_string = if output.exit_status == 0 {
format!("{}", output.exit_status.to_string().green())
} else {
format!("{}", output.exit_status.to_string().red())
};
// Display summary of command execution
println!(
"{}",
@ -515,7 +534,7 @@ fn execute_with_massh(hosts: &[(String, IpAddr, usize)], username: &str, command
}
}
}
processed = end;
}
}
@ -527,7 +546,7 @@ fn main() {
.format_timestamp(None)
.format_target(false)
.init();
// Parse command-line arguments
let args = Args::parse();
@ -584,13 +603,14 @@ fn main() {
}
info!("Matched hosts:");
// Perform DNS resolution for all hosts in parallel
// Results are stored with original indices to maintain order
let resolved_ips_with_indices = Arc::new(Mutex::new(Vec::<(String, IpAddr, usize)>::new()));
host_with_indices.par_iter().for_each(|(host, idx)| {
match lookup_host(&host.name) {
host_with_indices
.par_iter()
.for_each(|(host, idx)| match lookup_host(&host.name) {
Ok(ips) if !ips.is_empty() => {
let ip = ips[0];
let mut results = resolved_ips_with_indices.lock().unwrap();
@ -598,19 +618,26 @@ fn main() {
}
Ok(_) => {
let mut results = resolved_ips_with_indices.lock().unwrap();
results.push((host.name.clone(), IpAddr::V4(std::net::Ipv4Addr::new(0, 0, 0, 0)), *idx));
results.push((
host.name.clone(),
IpAddr::V4(std::net::Ipv4Addr::new(0, 0, 0, 0)),
*idx,
));
}
Err(_) => {
let mut results = resolved_ips_with_indices.lock().unwrap();
results.push((host.name.clone(), IpAddr::V4(std::net::Ipv4Addr::new(0, 0, 0, 0)), *idx));
results.push((
host.name.clone(),
IpAddr::V4(std::net::Ipv4Addr::new(0, 0, 0, 0)),
*idx,
));
}
}
});
});
// Sort hosts by original index to maintain consistent display order
let mut resolved_hosts = resolved_ips_with_indices.lock().unwrap().clone();
resolved_hosts.sort_by_key(|(_, _, idx)| *idx);
// Display all matched hosts with their resolved IPs
for (hostname, ip, _) in &resolved_hosts {
if ip.is_unspecified() {
@ -631,16 +658,22 @@ fn main() {
error!("No valid hosts to connect to");
process::exit(1);
}
// Find common domain suffix to optimize display
let hostnames: Vec<String> = valid_hosts.iter().map(|(hostname, _, _)| hostname.clone()).collect();
let hostnames: Vec<String> = valid_hosts
.iter()
.map(|(hostname, _, _)| hostname.clone())
.collect();
let common_suffix = find_common_suffix(&hostnames);
// Inform user about display optimization if common suffix found
if let Some(suffix) = &common_suffix {
info!("Common domain suffix found: '{}' (will be displayed as '*')", suffix);
info!(
"Common domain suffix found: '{}' (will be displayed as '*')",
suffix
);
}
// Ask for confirmation before proceeding (unless --noconfirm is specified)
if !args.noconfirm
&& match Question::new(&*format!(
@ -665,40 +698,48 @@ fn main() {
// Use system SSH client (default behavior)
let batch_size = args.parallel as usize;
let mut processed = 0;
while processed < valid_hosts.len() {
let end = std::cmp::min(processed + batch_size, valid_hosts.len());
let batch = &valid_hosts[processed..end];
// Create a thread for each host in the current batch
let mut handles = Vec::new();
for (hostname, _, _) in batch {
let hostname = hostname.clone();
let username = args.username.clone();
let command = args.command.clone();
let common_suffix_clone = common_suffix.clone();
// Execute SSH command in a separate thread
let handle = thread::spawn(move || {
match execute_ssh_command(&hostname, &username, &command, &common_suffix_clone) {
match execute_ssh_command(&hostname, &username, &command, &common_suffix_clone)
{
Ok(_) => (),
Err(e) => error!("Error executing command on {}: {}", hostname, e),
}
});
handles.push(handle);
}
// Wait for all threads in this batch to complete
for handle in handles {
handle.join().unwrap();
}
processed = end;
}
} else {
// Use the embedded massh library implementation
execute_with_massh(&valid_hosts, &args.username, &args.command, args.parallel, args.code, &common_suffix);
execute_with_massh(
&valid_hosts,
&args.username,
&args.command,
args.parallel,
args.code,
&common_suffix,
);
}
}
}