Add more Topology samples with various architectures
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@ -1,315 +1,232 @@
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use rand::Rng;
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use std::process::Command;
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// Basic traits from your example
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trait Topology {}
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pub trait Capability {}
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pub trait CommandCapability: Capability {
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fn execute_command(&self, command: &str, args: &[&str]) -> Result<String, String>;
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trait Score: Clone + std::fmt::Debug {
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fn get_interpret<T: Topology>(&self) -> Box<dyn Interpret<T>>;
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fn name(&self) -> String;
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}
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pub trait KubernetesCapability: Capability {
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fn apply_manifest(&self, manifest: &str) -> Result<(), String>;
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fn get_resource(&self, resource_type: &str, name: &str) -> Result<String, String>;
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trait Interpret<T: Topology> {
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fn execute(&self);
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}
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pub trait Topology {
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fn name(&self) -> &str;
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struct Maestro<T: Topology> {
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topology: T
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}
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pub trait Score<T: Topology> {
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fn compile(&self) -> Result<Box<dyn Interpret<T>>, String>;
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fn name(&self) -> &str;
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}
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pub struct LinuxHostTopology {
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name: String,
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host: String,
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}
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impl Capability for LinuxHostTopology {}
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impl LinuxHostTopology {
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pub fn new(name: String, host: String) -> Self {
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Self { name, host }
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impl<T: Topology> Maestro<T> {
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pub fn new(topology: T) -> Self {
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Maestro { topology }
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}
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pub fn register_score<S: Score + 'static>(&self, score: S) {
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println!("Registering score: {}", score.name());
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}
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pub fn execute_score<S: Score + 'static>(&self, score: S) {
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println!("Executing score: {}", score.name());
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score.get_interpret::<T>().execute();
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}
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}
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impl Topology for LinuxHostTopology {
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fn name(&self) -> &str {
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&self.name
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// Capability traits - these are used to enforce requirements
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trait CommandExecution {
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fn execute_command(&self, command: &[String]) -> Result<String, String>;
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}
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trait FileSystem {
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fn read_file(&self, path: &str) -> Result<String, String>;
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fn write_file(&self, path: &str, content: &str) -> Result<(), String>;
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}
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// A concrete topology implementation
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#[derive(Clone, Debug)]
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struct LinuxHostTopology {
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hostname: String,
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}
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impl Topology for LinuxHostTopology {}
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// Implement the capabilities for LinuxHostTopology
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impl CommandExecution for LinuxHostTopology {
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fn execute_command(&self, command: &[String]) -> Result<String, String> {
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println!("Executing command on {}: {:?}", self.hostname, command);
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// In a real implementation, this would use std::process::Command
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Ok(format!("Command executed successfully on {}", self.hostname))
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}
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}
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impl CommandCapability for LinuxHostTopology {
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fn execute_command(&self, command: &str, args: &[&str]) -> Result<String, String> {
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println!("Executing on {}: {} {:?}", self.host, command, args);
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// In a real implementation, this would SSH to the host and execute the command
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let output = Command::new(command)
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.args(args)
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.output()
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.map_err(|e| e.to_string())?;
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if output.status.success() {
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Ok(String::from_utf8_lossy(&output.stdout).to_string())
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} else {
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Err(String::from_utf8_lossy(&output.stderr).to_string())
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}
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impl FileSystem for LinuxHostTopology {
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fn read_file(&self, path: &str) -> Result<String, String> {
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println!("Reading file {} on {}", path, self.hostname);
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Ok(format!("Content of {} on {}", path, self.hostname))
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}
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}
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pub struct K3DTopology {
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name: String,
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linux_host: LinuxHostTopology,
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cluster_name: String,
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}
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impl Capability for K3DTopology {}
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impl K3DTopology {
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pub fn new(name: String, linux_host: LinuxHostTopology, cluster_name: String) -> Self {
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Self {
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name,
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linux_host,
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cluster_name,
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}
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}
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}
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impl Topology for K3DTopology {
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fn name(&self) -> &str {
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&self.name
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}
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}
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impl CommandCapability for K3DTopology {
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fn execute_command(&self, command: &str, args: &[&str]) -> Result<String, String> {
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self.linux_host.execute_command(command, args)
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}
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}
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impl KubernetesCapability for K3DTopology {
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fn apply_manifest(&self, manifest: &str) -> Result<(), String> {
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println!("Applying manifest to K3D cluster '{}'", self.cluster_name);
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// Write manifest to a temporary file
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//let temp_file = format!("/tmp/manifest-{}.yaml", rand::thread_rng().gen::<u32>());
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let temp_file = format!("/tmp/manifest-TODO_RANDOM_NUMBER.yaml");
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// Use the linux_host directly to avoid capability trait bounds
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self.linux_host
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.execute_command("bash", &["-c", &format!("cat > {}", temp_file)])?;
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// Apply with kubectl
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self.linux_host.execute_command("kubectl", &[
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"--context",
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&format!("k3d-{}", self.cluster_name),
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"apply",
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"-f",
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&temp_file,
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])?;
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fn write_file(&self, path: &str, content: &str) -> Result<(), String> {
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println!("Writing to file {} on {}: {}", path, self.hostname, content);
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Ok(())
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}
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}
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fn get_resource(&self, resource_type: &str, name: &str) -> Result<String, String> {
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println!(
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"Getting resource {}/{} from K3D cluster '{}'",
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resource_type, name, self.cluster_name
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);
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self.linux_host.execute_command("kubectl", &[
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"--context",
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&format!("k3d-{}", self.cluster_name),
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"get",
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resource_type,
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name,
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"-o",
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"yaml",
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])
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// Another topology that doesn't support command execution
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#[derive(Clone, Debug)]
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struct BareMetalTopology {
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device_id: String,
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}
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impl Topology for BareMetalTopology {}
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impl FileSystem for BareMetalTopology {
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fn read_file(&self, path: &str) -> Result<String, String> {
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println!("Reading file {} on device {}", path, self.device_id);
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Ok(format!("Content of {} on device {}", path, self.device_id))
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}
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fn write_file(&self, path: &str, content: &str) -> Result<(), String> {
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println!("Writing to file {} on device {}: {}", path, self.device_id, content);
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Ok(())
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}
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}
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pub struct CommandScore {
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// CommandScore implementation
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#[derive(Clone, Debug)]
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struct CommandScore {
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name: String,
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command: String,
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args: Vec<String>,
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}
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impl CommandScore {
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pub fn new(name: String, command: String, args: Vec<String>) -> Self {
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Self {
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name,
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command,
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args,
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pub fn new(name: String, args: Vec<String>) -> Self {
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CommandScore { name, args }
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}
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}
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impl Score for CommandScore {
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fn get_interpret<T: Topology + CommandExecution + 'static>(&self) -> Box<dyn Interpret<T>> {
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// This is the key part: we constrain T to implement CommandExecution
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// If T doesn't implement CommandExecution, this will fail to compile
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Box::new(CommandInterpret::<T>::new(self.clone()))
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}
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fn name(&self) -> String {
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self.name.clone()
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}
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}
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// CommandInterpret implementation
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struct CommandInterpret<T: Topology + CommandExecution> {
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score: CommandScore,
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_marker: std::marker::PhantomData<T>,
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}
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impl<T: Topology + CommandExecution> CommandInterpret<T> {
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pub fn new(score: CommandScore) -> Self {
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CommandInterpret {
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score,
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_marker: std::marker::PhantomData,
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}
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}
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}
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pub trait Interpret<T: Topology> {
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fn execute(&self, topology: &T) -> Result<String, String>;
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}
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struct CommandInterpret;
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impl<T> Interpret<T> for CommandInterpret
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where
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T: Topology + CommandCapability,
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{
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fn execute(&self, topology: &T) -> Result<String, String> {
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todo!()
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impl<T: Topology + CommandExecution> Interpret<T> for CommandInterpret<T> {
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fn execute(&self) {
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println!("Command interpret is executing: {:?}", self.score.args);
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// In a real implementation, you would call the topology's execute_command method
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// topology.execute_command(&self.score.args);
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}
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}
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impl<T> Score<T> for CommandScore
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where
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T: Topology + CommandCapability,
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{
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fn compile(&self) -> Result<Box<dyn Interpret<T>>, String> {
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Ok(Box::new(CommandInterpret {}))
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}
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fn name(&self) -> &str {
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&self.name
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}
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}
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#[derive(Clone)]
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pub struct K8sResourceScore {
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// FileScore implementation - a different type of score that requires FileSystem capability
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#[derive(Clone, Debug)]
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struct FileScore {
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name: String,
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manifest: String,
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path: String,
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content: Option<String>,
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}
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impl K8sResourceScore {
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pub fn new(name: String, manifest: String) -> Self {
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Self { name, manifest }
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impl FileScore {
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pub fn new_read(name: String, path: String) -> Self {
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FileScore { name, path, content: None }
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}
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pub fn new_write(name: String, path: String, content: String) -> Self {
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FileScore { name, path, content: Some(content) }
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}
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}
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struct K8sResourceInterpret {
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score: K8sResourceScore,
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}
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impl<T: Topology + KubernetesCapability> Interpret<T> for K8sResourceInterpret {
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fn execute(&self, topology: &T) -> Result<String, String> {
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todo!()
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impl Score for FileScore {
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fn get_interpret<T: Topology>(&self) -> Box<dyn Interpret<T>> {
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// This constrains T to implement FileSystem
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Box::new(FileInterpret::<T>::new(self.clone()))
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}
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fn name(&self) -> String {
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self.name.clone()
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}
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}
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impl<T> Score<T> for K8sResourceScore
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where
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T: Topology + KubernetesCapability,
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{
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fn compile(&self) -> Result<Box<(dyn Interpret<T> + 'static)>, String> {
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Ok(Box::new(K8sResourceInterpret {
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score: self.clone(),
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}))
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}
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fn name(&self) -> &str {
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&self.name
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}
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// FileInterpret implementation
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struct FileInterpret<T: Topology + FileSystem> {
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score: FileScore,
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_marker: std::marker::PhantomData<T>,
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}
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pub struct Maestro<T: Topology> {
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topology: T,
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scores: Vec<Box<dyn Score<T>>>,
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}
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impl<T: Topology> Maestro<T> {
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pub fn new(topology: T) -> Self {
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Self {
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topology,
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scores: Vec::new(),
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impl<T: Topology + FileSystem> FileInterpret<T> {
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pub fn new(score: FileScore) -> Self {
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FileInterpret {
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score,
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_marker: std::marker::PhantomData,
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}
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}
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}
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pub fn register_score<S>(&mut self, score: S)
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where
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S: Score<T> + 'static,
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{
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println!(
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"Registering score '{}' for topology '{}'",
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score.name(),
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self.topology.name()
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);
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self.scores.push(Box::new(score));
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}
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pub fn orchestrate(&self) -> Result<(), String> {
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println!("Orchestrating topology '{}'", self.topology.name());
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for score in &self.scores {
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let interpret = score.compile()?;
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interpret.execute(&self.topology)?;
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impl<T: Topology + FileSystem> Interpret<T> for FileInterpret<T> {
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fn execute(&self) {
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match &self.score.content {
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Some(content) => {
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println!("File interpret is writing to {}: {}", self.score.path, content);
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// In a real implementation: topology.write_file(&self.score.path, content);
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},
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None => {
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println!("File interpret is reading from {}", self.score.path);
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// In a real implementation: let content = topology.read_file(&self.score.path);
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}
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}
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Ok(())
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}
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}
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fn main() {
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let linux_host = LinuxHostTopology::new("dev-machine".to_string(), "localhost".to_string());
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let mut linux_maestro = Maestro::new(linux_host);
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linux_maestro.register_score(CommandScore::new(
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"check-disk".to_string(),
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"df".to_string(),
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vec!["-h".to_string()],
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));
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linux_maestro.orchestrate().unwrap();
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// This would fail to compile if we tried to register a K8sResourceScore
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// because LinuxHostTopology doesn't implement KubernetesCapability
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//linux_maestro.register_score(K8sResourceScore::new(
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// "...".to_string(),
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// "...".to_string(),
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//));
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// Create a K3D topology which has both Command and Kubernetes capabilities
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let k3d_host = LinuxHostTopology::new("k3d-host".to_string(), "localhost".to_string());
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let k3d_topology = K3DTopology::new(
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"dev-cluster".to_string(),
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k3d_host,
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"devcluster".to_string(),
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// Create our topologies
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let linux = LinuxHostTopology { hostname: "server1.example.com".to_string() };
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let bare_metal = BareMetalTopology { device_id: "device001".to_string() };
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// Create our maestros
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let linux_maestro = Maestro::new(linux);
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let bare_metal_maestro = Maestro::new(bare_metal);
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// Create scores
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let command_score = CommandScore::new(
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"List Files".to_string(),
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vec!["ls".to_string(), "-la".to_string()]
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);
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// Create a maestro for the K3D topology
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let mut k3d_maestro = Maestro::new(k3d_topology);
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// We can register both command scores and kubernetes scores
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k3d_maestro.register_score(CommandScore::new(
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"check-nodes".to_string(),
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"kubectl".to_string(),
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vec!["get".to_string(), "nodes".to_string()],
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));
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k3d_maestro.register_score(K8sResourceScore::new(
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"deploy-nginx".to_string(),
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r#"
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: nginx
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spec:
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replicas: 1
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selector:
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matchLabels:
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app: nginx
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template:
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metadata:
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labels:
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app: nginx
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spec:
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containers:
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- name: nginx
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image: nginx:latest
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ports:
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- containerPort: 80
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"#
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.to_string(),
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));
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// Orchestrate both topologies
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linux_maestro.orchestrate().unwrap();
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k3d_maestro.orchestrate().unwrap();
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let file_read_score = FileScore::new_read(
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"Read Config".to_string(),
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"/etc/config.json".to_string()
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);
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// This will work because LinuxHostTopology implements CommandExecution
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linux_maestro.execute_score(command_score.clone());
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// This will work because LinuxHostTopology implements FileSystem
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linux_maestro.execute_score(file_read_score.clone());
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// This will work because BareMetalTopology implements FileSystem
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bare_metal_maestro.execute_score(file_read_score);
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// This would NOT compile because BareMetalTopology doesn't implement CommandExecution:
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// bare_metal_maestro.execute_score(command_score);
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// The error would occur at compile time, ensuring type safety
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println!("All scores executed successfully!");
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}
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314
examples/topology/src/main_claude37_2.rs
Normal file
314
examples/topology/src/main_claude37_2.rs
Normal file
@ -0,0 +1,314 @@
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mod main_gemini25pro;
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use std::process::Command;
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pub trait Capability {}
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pub trait CommandCapability: Capability {
|
||||
fn execute_command(&self, command: &str, args: &[&str]) -> Result<String, String>;
|
||||
}
|
||||
|
||||
pub trait KubernetesCapability: Capability {
|
||||
fn apply_manifest(&self, manifest: &str) -> Result<(), String>;
|
||||
fn get_resource(&self, resource_type: &str, name: &str) -> Result<String, String>;
|
||||
}
|
||||
|
||||
pub trait Topology {
|
||||
fn name(&self) -> &str;
|
||||
}
|
||||
|
||||
pub trait Score<T: Topology> {
|
||||
fn compile(&self) -> Result<Box<dyn Interpret<T>>, String>;
|
||||
fn name(&self) -> &str;
|
||||
}
|
||||
|
||||
pub struct LinuxHostTopology {
|
||||
name: String,
|
||||
host: String,
|
||||
}
|
||||
|
||||
impl Capability for LinuxHostTopology {}
|
||||
|
||||
impl LinuxHostTopology {
|
||||
pub fn new(name: String, host: String) -> Self {
|
||||
Self { name, host }
|
||||
}
|
||||
}
|
||||
|
||||
impl Topology for LinuxHostTopology {
|
||||
fn name(&self) -> &str {
|
||||
&self.name
|
||||
}
|
||||
}
|
||||
|
||||
impl CommandCapability for LinuxHostTopology {
|
||||
fn execute_command(&self, command: &str, args: &[&str]) -> Result<String, String> {
|
||||
println!("Executing on {}: {} {:?}", self.host, command, args);
|
||||
// In a real implementation, this would SSH to the host and execute the command
|
||||
let output = Command::new(command)
|
||||
.args(args)
|
||||
.output()
|
||||
.map_err(|e| e.to_string())?;
|
||||
|
||||
if output.status.success() {
|
||||
Ok(String::from_utf8_lossy(&output.stdout).to_string())
|
||||
} else {
|
||||
Err(String::from_utf8_lossy(&output.stderr).to_string())
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub struct K3DTopology {
|
||||
name: String,
|
||||
linux_host: LinuxHostTopology,
|
||||
cluster_name: String,
|
||||
}
|
||||
|
||||
impl Capability for K3DTopology {}
|
||||
|
||||
impl K3DTopology {
|
||||
pub fn new(name: String, linux_host: LinuxHostTopology, cluster_name: String) -> Self {
|
||||
Self {
|
||||
name,
|
||||
linux_host,
|
||||
cluster_name,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Topology for K3DTopology {
|
||||
fn name(&self) -> &str {
|
||||
&self.name
|
||||
}
|
||||
}
|
||||
|
||||
impl CommandCapability for K3DTopology {
|
||||
fn execute_command(&self, command: &str, args: &[&str]) -> Result<String, String> {
|
||||
self.linux_host.execute_command(command, args)
|
||||
}
|
||||
}
|
||||
|
||||
impl KubernetesCapability for K3DTopology {
|
||||
fn apply_manifest(&self, manifest: &str) -> Result<(), String> {
|
||||
println!("Applying manifest to K3D cluster '{}'", self.cluster_name);
|
||||
// Write manifest to a temporary file
|
||||
let temp_file = format!("/tmp/manifest-harmony-temp.yaml");
|
||||
|
||||
// Use the linux_host directly to avoid capability trait bounds
|
||||
self.linux_host
|
||||
.execute_command("bash", &["-c", &format!("cat > {}", temp_file)])?;
|
||||
|
||||
// Apply with kubectl
|
||||
self.linux_host.execute_command("kubectl", &[
|
||||
"--context",
|
||||
&format!("k3d-{}", self.cluster_name),
|
||||
"apply",
|
||||
"-f",
|
||||
&temp_file,
|
||||
])?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn get_resource(&self, resource_type: &str, name: &str) -> Result<String, String> {
|
||||
println!(
|
||||
"Getting resource {}/{} from K3D cluster '{}'",
|
||||
resource_type, name, self.cluster_name
|
||||
);
|
||||
self.linux_host.execute_command("kubectl", &[
|
||||
"--context",
|
||||
&format!("k3d-{}", self.cluster_name),
|
||||
"get",
|
||||
resource_type,
|
||||
name,
|
||||
"-o",
|
||||
"yaml",
|
||||
])
|
||||
}
|
||||
}
|
||||
|
||||
pub struct CommandScore {
|
||||
name: String,
|
||||
command: String,
|
||||
args: Vec<String>,
|
||||
}
|
||||
|
||||
impl CommandScore {
|
||||
pub fn new(name: String, command: String, args: Vec<String>) -> Self {
|
||||
Self {
|
||||
name,
|
||||
command,
|
||||
args,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub trait Interpret<T: Topology> {
|
||||
fn execute(&self, topology: &T) -> Result<String, String>;
|
||||
}
|
||||
|
||||
struct CommandInterpret;
|
||||
|
||||
impl<T> Interpret<T> for CommandInterpret
|
||||
where
|
||||
T: Topology + CommandCapability,
|
||||
{
|
||||
fn execute(&self, topology: &T) -> Result<String, String> {
|
||||
todo!()
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> Score<T> for CommandScore
|
||||
where
|
||||
T: Topology + CommandCapability,
|
||||
{
|
||||
fn compile(&self) -> Result<Box<dyn Interpret<T>>, String> {
|
||||
Ok(Box::new(CommandInterpret {}))
|
||||
}
|
||||
|
||||
fn name(&self) -> &str {
|
||||
&self.name
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct K8sResourceScore {
|
||||
name: String,
|
||||
manifest: String,
|
||||
}
|
||||
|
||||
impl K8sResourceScore {
|
||||
pub fn new(name: String, manifest: String) -> Self {
|
||||
Self { name, manifest }
|
||||
}
|
||||
}
|
||||
|
||||
struct K8sResourceInterpret {
|
||||
score: K8sResourceScore,
|
||||
}
|
||||
|
||||
impl<T: Topology + KubernetesCapability> Interpret<T> for K8sResourceInterpret {
|
||||
fn execute(&self, topology: &T) -> Result<String, String> {
|
||||
todo!()
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> Score<T> for K8sResourceScore
|
||||
where
|
||||
T: Topology + KubernetesCapability,
|
||||
{
|
||||
fn compile(&self) -> Result<Box<(dyn Interpret<T> + 'static)>, String> {
|
||||
Ok(Box::new(K8sResourceInterpret {
|
||||
score: self.clone(),
|
||||
}))
|
||||
}
|
||||
|
||||
fn name(&self) -> &str {
|
||||
&self.name
|
||||
}
|
||||
}
|
||||
|
||||
pub struct Maestro<T: Topology> {
|
||||
topology: T,
|
||||
scores: Vec<Box<dyn Score<T>>>,
|
||||
}
|
||||
|
||||
|
||||
impl<T: Topology> Maestro<T> {
|
||||
pub fn new(topology: T) -> Self {
|
||||
Self {
|
||||
topology,
|
||||
scores: Vec::new(),
|
||||
}
|
||||
}
|
||||
|
||||
pub fn register_score<S>(&mut self, score: S)
|
||||
where
|
||||
S: Score<T> + 'static,
|
||||
{
|
||||
println!(
|
||||
"Registering score '{}' for topology '{}'",
|
||||
score.name(),
|
||||
self.topology.name()
|
||||
);
|
||||
self.scores.push(Box::new(score));
|
||||
}
|
||||
|
||||
pub fn orchestrate(&self) -> Result<(), String> {
|
||||
println!("Orchestrating topology '{}'", self.topology.name());
|
||||
for score in &self.scores {
|
||||
let interpret = score.compile()?;
|
||||
interpret.execute(&self.topology)?;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let linux_host = LinuxHostTopology::new("dev-machine".to_string(), "localhost".to_string());
|
||||
|
||||
let mut linux_maestro = Maestro::new(linux_host);
|
||||
|
||||
linux_maestro.register_score(CommandScore::new(
|
||||
"check-disk".to_string(),
|
||||
"df".to_string(),
|
||||
vec!["-h".to_string()],
|
||||
));
|
||||
linux_maestro.orchestrate().unwrap();
|
||||
|
||||
// This would fail to compile if we tried to register a K8sResourceScore
|
||||
// because LinuxHostTopology doesn't implement KubernetesCapability
|
||||
//linux_maestro.register_score(K8sResourceScore::new(
|
||||
// "...".to_string(),
|
||||
// "...".to_string(),
|
||||
//));
|
||||
|
||||
// Create a K3D topology which has both Command and Kubernetes capabilities
|
||||
let k3d_host = LinuxHostTopology::new("k3d-host".to_string(), "localhost".to_string());
|
||||
|
||||
let k3d_topology = K3DTopology::new(
|
||||
"dev-cluster".to_string(),
|
||||
k3d_host,
|
||||
"devcluster".to_string(),
|
||||
);
|
||||
|
||||
// Create a maestro for the K3D topology
|
||||
let mut k3d_maestro = Maestro::new(k3d_topology);
|
||||
|
||||
// We can register both command scores and kubernetes scores
|
||||
k3d_maestro.register_score(CommandScore::new(
|
||||
"check-nodes".to_string(),
|
||||
"kubectl".to_string(),
|
||||
vec!["get".to_string(), "nodes".to_string()],
|
||||
));
|
||||
|
||||
k3d_maestro.register_score(K8sResourceScore::new(
|
||||
"deploy-nginx".to_string(),
|
||||
r#"
|
||||
apiVersion: apps/v1
|
||||
kind: Deployment
|
||||
metadata:
|
||||
name: nginx
|
||||
spec:
|
||||
replicas: 1
|
||||
selector:
|
||||
matchLabels:
|
||||
app: nginx
|
||||
template:
|
||||
metadata:
|
||||
labels:
|
||||
app: nginx
|
||||
spec:
|
||||
containers:
|
||||
- name: nginx
|
||||
image: nginx:latest
|
||||
ports:
|
||||
- containerPort: 80
|
||||
"#
|
||||
.to_string(),
|
||||
));
|
||||
|
||||
// Orchestrate both topologies
|
||||
linux_maestro.orchestrate().unwrap();
|
||||
k3d_maestro.orchestrate().unwrap();
|
||||
}
|
||||
369
examples/topology/src/main_gemini25pro.rs
Normal file
369
examples/topology/src/main_gemini25pro.rs
Normal file
@ -0,0 +1,369 @@
|
||||
// Import necessary items (though for this example, few are needed beyond std)
|
||||
use std::fmt;
|
||||
|
||||
// --- Error Handling ---
|
||||
// A simple error type for demonstration purposes. In a real app, use `thiserror` or `anyhow`.
|
||||
#[derive(Debug)]
|
||||
enum OrchestrationError {
|
||||
CommandFailed(String),
|
||||
KubeClientError(String),
|
||||
TopologySetupFailed(String),
|
||||
}
|
||||
|
||||
impl fmt::Display for OrchestrationError {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
match self {
|
||||
OrchestrationError::CommandFailed(e) => write!(f, "Command execution failed: {}", e),
|
||||
OrchestrationError::KubeClientError(e) => write!(f, "Kubernetes client error: {}", e),
|
||||
OrchestrationError::TopologySetupFailed(e) => write!(f, "Topology setup failed: {}", e),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl std::error::Error for OrchestrationError {}
|
||||
|
||||
// Define a common Result type
|
||||
type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
|
||||
|
||||
// --- 1. Capability Specification (as Traits) ---
|
||||
|
||||
/// Capability trait representing the ability to run Linux commands.
|
||||
/// This follows the "Parse, Don't Validate" idea implicitly - if you have an object
|
||||
/// implementing this, you know you *can* run commands, no need to check later.
|
||||
trait LinuxOperations {
|
||||
fn run_command(&self, command: &str) -> Result<String>;
|
||||
}
|
||||
|
||||
/// A mock Kubernetes client trait for demonstration.
|
||||
trait KubeClient {
|
||||
fn apply_manifest(&self, manifest: &str) -> Result<()>;
|
||||
fn get_pods(&self, namespace: &str) -> Result<Vec<String>>;
|
||||
}
|
||||
|
||||
/// Mock implementation of a KubeClient.
|
||||
struct MockKubeClient {
|
||||
cluster_name: String,
|
||||
}
|
||||
|
||||
impl KubeClient for MockKubeClient {
|
||||
fn apply_manifest(&self, manifest: &str) -> Result<()> {
|
||||
println!(
|
||||
"[{}] Applying Kubernetes manifest:\n---\n{}\n---",
|
||||
self.cluster_name, manifest
|
||||
);
|
||||
// Simulate success or failure
|
||||
if manifest.contains("invalid") {
|
||||
Err(Box::new(OrchestrationError::KubeClientError(
|
||||
"Invalid manifest content".into(),
|
||||
)))
|
||||
} else {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
fn get_pods(&self, namespace: &str) -> Result<Vec<String>> {
|
||||
println!(
|
||||
"[{}] Getting pods in namespace '{}'",
|
||||
self.cluster_name, namespace
|
||||
);
|
||||
Ok(vec![
|
||||
format!("pod-a-12345-{}-{}", namespace, self.cluster_name),
|
||||
format!("pod-b-67890-{}-{}", namespace, self.cluster_name),
|
||||
])
|
||||
}
|
||||
}
|
||||
|
||||
/// Capability trait representing access to a Kubernetes cluster.
|
||||
/// This follows Rust Embedded WG's "Zero-Cost Abstractions" - the trait itself
|
||||
/// adds no runtime overhead, only compile-time structure.
|
||||
trait KubernetesCluster {
|
||||
// Provides access to a Kubernetes client instance.
|
||||
// Using `impl Trait` in return position for flexibility.
|
||||
fn get_kube_client(&self) -> Result<impl KubeClient>;
|
||||
}
|
||||
|
||||
// --- 2. Topology Implementations ---
|
||||
// Topologies implement the capabilities they provide.
|
||||
|
||||
/// Represents a basic Linux host.
|
||||
#[derive(Debug, Clone)]
|
||||
struct LinuxHostTopology {
|
||||
hostname: String,
|
||||
// In a real scenario: SSH connection details, etc.
|
||||
}
|
||||
|
||||
impl LinuxHostTopology {
|
||||
fn new(hostname: &str) -> Self {
|
||||
println!("Initializing LinuxHostTopology for {}", hostname);
|
||||
Self {
|
||||
hostname: hostname.to_string(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// LinuxHostTopology provides LinuxOperations capability.
|
||||
impl LinuxOperations for LinuxHostTopology {
|
||||
fn run_command(&self, command: &str) -> Result<String> {
|
||||
println!("[{}] Running command: '{}'", self.hostname, command);
|
||||
// Simulate command execution (e.g., via SSH)
|
||||
if command.starts_with("fail") {
|
||||
Err(Box::new(OrchestrationError::CommandFailed(format!(
|
||||
"Command '{}' failed",
|
||||
command
|
||||
))))
|
||||
} else {
|
||||
Ok(format!("Output of '{}' on {}", command, self.hostname))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Represents a K3D (Kubernetes in Docker) cluster running on a host.
|
||||
#[derive(Debug, Clone)]
|
||||
struct K3DTopology {
|
||||
cluster_name: String,
|
||||
host_os: String, // Example: might implicitly run commands on the underlying host
|
||||
// In a real scenario: Kubeconfig path, Docker client, etc.
|
||||
}
|
||||
|
||||
impl K3DTopology {
|
||||
fn new(cluster_name: &str) -> Self {
|
||||
println!("Initializing K3DTopology for cluster {}", cluster_name);
|
||||
Self {
|
||||
cluster_name: cluster_name.to_string(),
|
||||
host_os: "Linux".to_string(), // Assume k3d runs on Linux for this example
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// K3DTopology provides KubernetesCluster capability.
|
||||
impl KubernetesCluster for K3DTopology {
|
||||
fn get_kube_client(&self) -> Result<impl KubeClient> {
|
||||
println!("[{}] Creating mock Kubernetes client", self.cluster_name);
|
||||
// In a real scenario, this would initialize a client using kubeconfig etc.
|
||||
Ok(MockKubeClient {
|
||||
cluster_name: self.cluster_name.clone(),
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// K3DTopology *also* provides LinuxOperations (e.g., for running commands inside nodes or on the host managing k3d).
|
||||
impl LinuxOperations for K3DTopology {
|
||||
fn run_command(&self, command: &str) -> Result<String> {
|
||||
println!(
|
||||
"[{} on {} host] Running command: '{}'",
|
||||
self.cluster_name, self.host_os, command
|
||||
);
|
||||
// Simulate command execution (maybe `docker exec` or similar)
|
||||
if command.starts_with("fail") {
|
||||
Err(Box::new(OrchestrationError::CommandFailed(format!(
|
||||
"Command '{}' failed within k3d context",
|
||||
command
|
||||
))))
|
||||
} else {
|
||||
Ok(format!(
|
||||
"Output of '{}' within k3d cluster {}",
|
||||
command, self.cluster_name
|
||||
))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// --- 3. Score Implementations ---
|
||||
// Scores require capabilities via trait bounds on their execution logic.
|
||||
|
||||
/// Base trait for identifying scores. Could be empty or hold metadata.
|
||||
trait Score {
|
||||
fn name(&self) -> &'static str;
|
||||
// We don't put execute here, as its signature depends on required capabilities.
|
||||
}
|
||||
|
||||
/// A score that runs a shell command on a Linux host.
|
||||
#[derive(Debug)]
|
||||
struct CommandScore {
|
||||
command: String,
|
||||
}
|
||||
|
||||
impl Score for CommandScore {
|
||||
fn name(&self) -> &'static str {
|
||||
"CommandScore"
|
||||
}
|
||||
}
|
||||
|
||||
impl CommandScore {
|
||||
fn new(command: &str) -> Self {
|
||||
Self {
|
||||
command: command.to_string(),
|
||||
}
|
||||
}
|
||||
|
||||
/// Execute method is generic over T, but requires T implements LinuxOperations.
|
||||
/// This follows the "Scores as Polymorphic Functions" idea.
|
||||
fn execute<T: LinuxOperations + ?Sized>(&self, topology: &T) -> Result<()> {
|
||||
println!("Executing Score: {}", Score::name(self));
|
||||
let output = topology.run_command(&self.command)?;
|
||||
println!("Command Score Output: {}", output);
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
/// A score that applies a Kubernetes resource manifest.
|
||||
#[derive(Debug)]
|
||||
struct K8sResourceScore {
|
||||
manifest_path: String, // Path or content
|
||||
}
|
||||
|
||||
impl Score for K8sResourceScore {
|
||||
fn name(&self) -> &'static str {
|
||||
"K8sResourceScore"
|
||||
}
|
||||
}
|
||||
|
||||
impl K8sResourceScore {
|
||||
fn new(manifest_path: &str) -> Self {
|
||||
Self {
|
||||
manifest_path: manifest_path.to_string(),
|
||||
}
|
||||
}
|
||||
|
||||
/// Execute method requires T implements KubernetesCluster.
|
||||
fn execute<T: KubernetesCluster + ?Sized>(&self, topology: &T) -> Result<()> {
|
||||
println!("Executing Score: {}", Score::name(self));
|
||||
let client = topology.get_kube_client()?;
|
||||
let manifest_content = format!(
|
||||
"apiVersion: v1\nkind: Pod\nmetadata:\n name: my-pod-from-{}",
|
||||
self.manifest_path
|
||||
); // Simulate reading file
|
||||
client.apply_manifest(&manifest_content)?;
|
||||
println!(
|
||||
"K8s Resource Score applied manifest: {}",
|
||||
self.manifest_path
|
||||
);
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
// --- 4. Maestro (The Orchestrator) ---
|
||||
|
||||
// This version of Maestro uses a helper trait (`ScoreRunner`) to enable
|
||||
// storing heterogeneous scores while preserving compile-time checks.
|
||||
|
||||
/// A helper trait to erase the specific capability requirements *after*
|
||||
/// the compiler has verified them, allowing storage in a Vec.
|
||||
/// The verification happens in the blanket impls below.
|
||||
trait ScoreRunner<T> {
|
||||
// T is the concrete Topology type
|
||||
fn run(&self, topology: &T) -> Result<()>;
|
||||
fn name(&self) -> &'static str;
|
||||
}
|
||||
|
||||
// Blanket implementation: A CommandScore can be run on any Topology T
|
||||
// *if and only if* T implements LinuxOperations.
|
||||
// The compiler checks this bound when `add_score` is called.
|
||||
impl<T: LinuxOperations> ScoreRunner<T> for CommandScore {
|
||||
fn run(&self, topology: &T) -> Result<()> {
|
||||
self.execute(topology) // Call the capability-specific execute method
|
||||
}
|
||||
fn name(&self) -> &'static str {
|
||||
Score::name(self)
|
||||
}
|
||||
}
|
||||
|
||||
// Blanket implementation: A K8sResourceScore can be run on any Topology T
|
||||
// *if and only if* T implements KubernetesCluster.
|
||||
impl<T: KubernetesCluster> ScoreRunner<T> for K8sResourceScore {
|
||||
fn run(&self, topology: &T) -> Result<()> {
|
||||
self.execute(topology) // Call the capability-specific execute method
|
||||
}
|
||||
fn name(&self) -> &'static str {
|
||||
Score::name(self)
|
||||
}
|
||||
}
|
||||
|
||||
/// The Maestro orchestrator, strongly typed to a specific Topology `T`.
|
||||
struct Maestro<T> {
|
||||
topology: T,
|
||||
// Stores type-erased runners, but addition is type-safe.
|
||||
scores: Vec<Box<dyn ScoreRunner<T>>>,
|
||||
}
|
||||
|
||||
impl<T> Maestro<T> {
|
||||
/// Creates a new Maestro instance bound to a specific topology.
|
||||
fn new(topology: T) -> Self {
|
||||
println!("Maestro initialized.");
|
||||
Maestro {
|
||||
topology,
|
||||
scores: Vec::new(),
|
||||
}
|
||||
}
|
||||
|
||||
/// Adds a score to the Maestro.
|
||||
/// **Compile-time check happens here!**
|
||||
/// The `S: ScoreRunner<T>` bound ensures that the score `S` provides an
|
||||
/// implementation of `ScoreRunner` *for the specific topology type `T`*.
|
||||
/// The blanket impls above ensure this is only possible if `T` has the
|
||||
/// required capabilities for `S`.
|
||||
/// This directly follows the "Theoretical Example: The Compiler as an Ally".
|
||||
fn add_score<S>(&mut self, score: S)
|
||||
where
|
||||
S: Score + ScoreRunner<T> + 'static, // S must be runnable on *this* T
|
||||
{
|
||||
println!("Registering score: {}", Score::name(&score));
|
||||
self.scores.push(Box::new(score));
|
||||
}
|
||||
|
||||
/// Runs all registered scores sequentially on the topology.
|
||||
fn run_all(&self) -> Vec<Result<()>> {
|
||||
println!("\n--- Running all scores ---");
|
||||
self.scores
|
||||
.iter()
|
||||
.map(|score_runner| {
|
||||
println!("---");
|
||||
let result = score_runner.run(&self.topology);
|
||||
match &result {
|
||||
Ok(_) => println!("Score '{}' completed successfully.", score_runner.name()),
|
||||
Err(e) => eprintln!("Score '{}' failed: {}", score_runner.name(), e),
|
||||
}
|
||||
result
|
||||
})
|
||||
.collect()
|
||||
}
|
||||
}
|
||||
|
||||
// --- 5. Example Usage ---
|
||||
|
||||
fn main() {
|
||||
println!("=== Scenario 1: Linux Host Topology ===");
|
||||
let linux_host = LinuxHostTopology::new("server1.example.com");
|
||||
let mut maestro_linux = Maestro::new(linux_host);
|
||||
|
||||
// Add scores compatible with LinuxHostTopology (which has LinuxOperations)
|
||||
maestro_linux.add_score(CommandScore::new("uname -a"));
|
||||
maestro_linux.add_score(CommandScore::new("ls -l /tmp"));
|
||||
|
||||
// *** Compile-time Error Example ***
|
||||
// Try adding a score that requires KubernetesCluster capability.
|
||||
// This line WILL NOT COMPILE because LinuxHostTopology does not implement KubernetesCluster,
|
||||
// therefore K8sResourceScore does not implement ScoreRunner<LinuxHostTopology>.
|
||||
// maestro_linux.add_score(K8sResourceScore::new("my-app.yaml"));
|
||||
// Uncomment the line above to see the compiler error! The error message will
|
||||
// likely point to the `ScoreRunner<LinuxHostTopology>` bound not being satisfied
|
||||
// for `K8sResourceScore`.
|
||||
|
||||
let results_linux = maestro_linux.run_all();
|
||||
println!("\nLinux Host Results: {:?}", results_linux);
|
||||
|
||||
println!("\n=== Scenario 2: K3D Topology ===");
|
||||
let k3d_cluster = K3DTopology::new("dev-cluster");
|
||||
let mut maestro_k3d = Maestro::new(k3d_cluster);
|
||||
|
||||
// Add scores compatible with K3DTopology (which has LinuxOperations AND KubernetesCluster)
|
||||
maestro_k3d.add_score(CommandScore::new("pwd")); // Uses LinuxOperations
|
||||
maestro_k3d.add_score(K8sResourceScore::new("nginx-deployment.yaml")); // Uses KubernetesCluster
|
||||
maestro_k3d.add_score(K8sResourceScore::new("invalid-service.yaml")); // Test error case
|
||||
maestro_k3d.add_score(CommandScore::new("fail please")); // Test error case
|
||||
|
||||
let results_k3d = maestro_k3d.run_all();
|
||||
println!("\nK3D Cluster Results: {:?}", results_k3d);
|
||||
|
||||
println!("\n=== Compile-Time Safety Demonstrated ===");
|
||||
println!("(Check the commented-out line in the code for the compile error example)");
|
||||
}
|
||||
492
examples/topology/src/main_geminifail.rs
Normal file
492
examples/topology/src/main_geminifail.rs
Normal file
@ -0,0 +1,492 @@
|
||||
use std::any::Any;
|
||||
use std::fmt::Debug;
|
||||
use std::process::Command;
|
||||
pub trait Capability {}
|
||||
|
||||
pub trait CommandCapability: Capability {
|
||||
fn execute_command(&self, command: &str, args: &Vec<String>) -> Result<String, String>;
|
||||
}
|
||||
|
||||
pub trait KubernetesCapability: Capability {
|
||||
fn apply_manifest(&self, manifest: &str) -> Result<(), String>;
|
||||
fn get_resource(&self, resource_type: &str, name: &str) -> Result<String, String>;
|
||||
}
|
||||
|
||||
pub trait Topology {
|
||||
fn name(&self) -> &str;
|
||||
}
|
||||
|
||||
pub trait Interpret<T: Topology> {
|
||||
fn execute(&self, topology: &T) -> Result<String, String>;
|
||||
}
|
||||
|
||||
// --- Score Definition Structs (Concrete) ---
|
||||
// CommandScore struct remains the same
|
||||
#[derive(Debug, Clone)] // Added Debug/Clone for easier handling
|
||||
pub struct CommandScore {
|
||||
name: String,
|
||||
command: String,
|
||||
args: Vec<String>,
|
||||
}
|
||||
|
||||
impl CommandScore {
|
||||
pub fn new(name: String, command: String, args: Vec<String>) -> Self {
|
||||
Self { name, command, args }
|
||||
}
|
||||
}
|
||||
|
||||
// K8sResourceScore struct remains the same
|
||||
#[derive(Debug, Clone)]
|
||||
pub struct K8sResourceScore {
|
||||
name: String,
|
||||
manifest: String,
|
||||
}
|
||||
|
||||
impl K8sResourceScore {
|
||||
pub fn new(name: String, manifest: String) -> Self {
|
||||
Self { name, manifest }
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// --- Metadata / Base Score Trait (Non-Generic) ---
|
||||
// Trait for common info and enabling downcasting later if needed
|
||||
pub trait ScoreDefinition: Debug + Send + Sync {
|
||||
fn name(&self) -> &str;
|
||||
// Method to allow downcasting
|
||||
fn as_any(&self) -> &dyn Any;
|
||||
// Optional: Could add methods for description, parameters etc.
|
||||
// fn description(&self) -> &str;
|
||||
|
||||
// Optional but potentially useful: A way to clone the definition
|
||||
fn box_clone(&self) -> Box<dyn ScoreDefinition>;
|
||||
}
|
||||
|
||||
// Implement Clone for Box<dyn ScoreDefinition>
|
||||
impl Clone for Box<dyn ScoreDefinition> {
|
||||
fn clone(&self) -> Self {
|
||||
self.box_clone()
|
||||
}
|
||||
}
|
||||
|
||||
// Implement ScoreDefinition for your concrete score types
|
||||
impl ScoreDefinition for CommandScore {
|
||||
fn name(&self) -> &str {
|
||||
&self.name
|
||||
}
|
||||
fn as_any(&self) -> &dyn Any {
|
||||
self
|
||||
}
|
||||
fn box_clone(&self) -> Box<dyn ScoreDefinition> {
|
||||
Box::new(self.clone())
|
||||
}
|
||||
}
|
||||
|
||||
impl ScoreDefinition for K8sResourceScore {
|
||||
fn name(&self) -> &str {
|
||||
&self.name
|
||||
}
|
||||
fn as_any(&self) -> &dyn Any {
|
||||
self
|
||||
}
|
||||
fn box_clone(&self) -> Box<dyn ScoreDefinition> {
|
||||
Box::new(self.clone())
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// --- Score Compatibility Trait (Generic over T) ---
|
||||
// This remains largely the same, ensuring compile-time checks
|
||||
pub trait Score<T: Topology>: ScoreDefinition {
|
||||
// No need for name() here, it's in ScoreDefinition
|
||||
fn compile(&self) -> Result<Box<dyn Interpret<T>>, String>;
|
||||
}
|
||||
|
||||
// --- Implementations of Score<T> (Crucial Link) ---
|
||||
|
||||
// CommandScore implements Score<T> for any T with CommandCapability
|
||||
impl<T> Score<T> for CommandScore
|
||||
where
|
||||
T: Topology + CommandCapability + 'static, // Added 'static bound often needed for Box<dyn>
|
||||
// Self: ScoreDefinition // This bound is implicit now
|
||||
{
|
||||
fn compile(&self) -> Result<Box<dyn Interpret<T>>, String> {
|
||||
// Pass necessary data from self to CommandInterpret
|
||||
Ok(Box::new(CommandInterpret {
|
||||
command: self.command.clone(),
|
||||
args: self.args.clone(),
|
||||
}))
|
||||
}
|
||||
}
|
||||
|
||||
// K8sResourceScore implements Score<T> for any T with KubernetesCapability
|
||||
impl<T> Score<T> for K8sResourceScore
|
||||
where
|
||||
T: Topology + KubernetesCapability + 'static,
|
||||
// Self: ScoreDefinition
|
||||
{
|
||||
fn compile(&self) -> Result<Box<dyn Interpret<T>>, String> {
|
||||
Ok(Box::new(K8sResourceInterpret {
|
||||
manifest: self.manifest.clone(), // Pass needed data
|
||||
}))
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// --- Interpret Implementations ---
|
||||
// Need to hold the actual data now
|
||||
|
||||
struct CommandInterpret {
|
||||
command: String,
|
||||
args: Vec<String>, // Or owned Strings if lifetime is tricky
|
||||
}
|
||||
|
||||
impl<'a, T> Interpret<T> for CommandInterpret
|
||||
where
|
||||
T: Topology + CommandCapability,
|
||||
{
|
||||
fn execute(&self, topology: &T) -> Result<String, String> {
|
||||
// Now uses data stored in self
|
||||
topology.execute_command(&self.command, &self.args)
|
||||
}
|
||||
}
|
||||
|
||||
struct K8sResourceInterpret {
|
||||
manifest: String,
|
||||
}
|
||||
|
||||
impl<T: Topology + KubernetesCapability> Interpret<T> for K8sResourceInterpret {
|
||||
fn execute(&self, topology: &T) -> Result<String, String> {
|
||||
topology.apply_manifest(&self.manifest)?;
|
||||
// apply_manifest returns Result<(), String>, adapt if needed
|
||||
Ok(format!("Applied manifest for {}", topology.name())) // Example success message
|
||||
}
|
||||
}
|
||||
|
||||
// --- Maestro ---
|
||||
// Maestro remains almost identical, leveraging the Score<T> bound
|
||||
pub struct Maestro<T: Topology> {
|
||||
topology: T,
|
||||
// Stores Score<T> trait objects, ensuring compatibility
|
||||
scores: Vec<Box<dyn Score<T>>>,
|
||||
}
|
||||
|
||||
impl<T: Topology + 'static> Maestro<T> { // Often need T: 'static here
|
||||
pub fn new(topology: T) -> Self {
|
||||
Self {
|
||||
topology,
|
||||
scores: Vec::new(),
|
||||
}
|
||||
}
|
||||
|
||||
// This method signature is key - it takes a concrete S
|
||||
// and the compiler checks if S implements Score<T>
|
||||
pub fn register_score<S>(&mut self, score: S) -> Result<(), String>
|
||||
where
|
||||
S: Score<T> + ScoreDefinition + Clone + 'static, // Ensure S is a Score for *this* T
|
||||
// We might need S: Clone if we want to store Box::new(score)
|
||||
// Alternatively, accept Box<dyn ScoreDefinition> and try to downcast/wrap
|
||||
{
|
||||
println!(
|
||||
"Registering score '{}' for topology '{}'",
|
||||
score.name(),
|
||||
self.topology.name()
|
||||
);
|
||||
// The compiler has already guaranteed that S implements Score<T>
|
||||
// We need to box it as dyn Score<T>
|
||||
self.scores.push(Box::new(score));
|
||||
Ok(())
|
||||
}
|
||||
|
||||
// Alternative registration if you have Box<dyn ScoreDefinition>
|
||||
pub fn register_score_definition(&mut self, score_def: Box<dyn ScoreDefinition>) -> Result<(), String>
|
||||
where
|
||||
T: Topology + CommandCapability + KubernetesCapability + 'static, // Example: list all needed caps here, or use generics + downcasting
|
||||
{
|
||||
println!(
|
||||
"Attempting to register score '{}' for topology '{}'",
|
||||
score_def.name(),
|
||||
self.topology.name()
|
||||
);
|
||||
|
||||
// Downcast to check concrete type and then check compatibility
|
||||
if let Some(cs) = score_def.as_any().downcast_ref::<CommandScore>() {
|
||||
// Check if T satisfies CommandScore's requirements (CommandCapability)
|
||||
// This check is somewhat manual or needs restructuring if we avoid listing all caps
|
||||
// A simpler way is to just try to create the Box<dyn Score<T>>
|
||||
let boxed_score: Box<dyn Score<T>> = Box::new(cs.clone()); // This relies on the blanket impls
|
||||
self.scores.push(boxed_score);
|
||||
Ok(())
|
||||
} else if let Some(ks) = score_def.as_any().downcast_ref::<K8sResourceScore>() {
|
||||
// Check if T satisfies K8sResourceScore's requirements (KubernetesCapability)
|
||||
let boxed_score: Box<dyn Score<T>> = Box::new(ks.clone());
|
||||
self.scores.push(boxed_score);
|
||||
Ok(())
|
||||
} else {
|
||||
Err(format!("Score '{}' is of an unknown type or incompatible", score_def.name()))
|
||||
}
|
||||
// This downcasting approach in Maestro slightly undermines the full compile-time
|
||||
// check unless designed carefully. The generic `register_score<S: Score<T>>` is safer.
|
||||
}
|
||||
|
||||
|
||||
pub fn orchestrate(&self) -> Result<(), String> {
|
||||
println!("Orchestrating topology '{}'", self.topology.name());
|
||||
for score in &self.scores {
|
||||
println!("Compiling score '{}'", score.name()); // Use name() from ScoreDefinition
|
||||
let interpret = score.compile()?;
|
||||
println!("Executing score '{}'", score.name());
|
||||
interpret.execute(&self.topology)?;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
// --- TUI Example ---
|
||||
struct ScoreItem {
|
||||
// Holds the definition/metadata, NOT the Score<T> trait object
|
||||
definition: Box<dyn ScoreDefinition>,
|
||||
}
|
||||
|
||||
struct HarmonyTui {
|
||||
// List of available score *definitions*
|
||||
available_scores: Vec<ScoreItem>,
|
||||
// Example: Maybe maps topology names to Maestros
|
||||
// maestros: HashMap<String, Box<dyn Any>>, // Storing Maestros generically is another challenge!
|
||||
}
|
||||
|
||||
impl HarmonyTui {
|
||||
fn new() -> Self {
|
||||
HarmonyTui { available_scores: vec![] }
|
||||
}
|
||||
|
||||
fn add_available_score(&mut self, score_def: Box<dyn ScoreDefinition>) {
|
||||
self.available_scores.push(ScoreItem { definition: score_def });
|
||||
}
|
||||
|
||||
fn display_scores(&self) {
|
||||
println!("Available Scores:");
|
||||
for (i, item) in self.available_scores.iter().enumerate() {
|
||||
println!("{}: {}", i, item.definition.name());
|
||||
}
|
||||
}
|
||||
|
||||
fn execute_score(&self, score: ScoreItem) {
|
||||
score.definition.
|
||||
|
||||
}
|
||||
|
||||
// Example: Function to add a selected score to a specific Maestro
|
||||
// This function would need access to the Maestros and handle the types
|
||||
fn add_selected_score_to_maestro<T>(
|
||||
&self,
|
||||
score_index: usize,
|
||||
maestro: &mut Maestro<T>
|
||||
) -> Result<(), String>
|
||||
where
|
||||
T: Topology + CommandCapability + KubernetesCapability + 'static, // Adjust bounds as needed
|
||||
{
|
||||
let score_item = self.available_scores.get(score_index)
|
||||
.ok_or("Invalid score index")?;
|
||||
|
||||
// We have Box<dyn ScoreDefinition>, need to add to Maestro<T>
|
||||
// Easiest is to downcast and call the generic register_score
|
||||
|
||||
if let Some(cs) = score_item.definition.as_any().downcast_ref::<CommandScore>() {
|
||||
// Compiler checks if CommandScore: Score<T> via register_score's bound
|
||||
maestro.register_score(cs.clone())?;
|
||||
Ok(())
|
||||
} else if let Some(ks) = score_item.definition.as_any().downcast_ref::<K8sResourceScore>() {
|
||||
// Compiler checks if K8sResourceScore: Score<T> via register_score's bound
|
||||
maestro.register_score(ks.clone())?;
|
||||
Ok(())
|
||||
} else {
|
||||
Err(format!("Cannot add score '{}': Unknown type or check Maestro compatibility", score_item.definition.name()))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub struct K3DTopology {
|
||||
name: String,
|
||||
linux_host: LinuxHostTopology,
|
||||
cluster_name: String,
|
||||
}
|
||||
|
||||
impl Capability for K3DTopology {}
|
||||
|
||||
impl K3DTopology {
|
||||
pub fn new(name: String, linux_host: LinuxHostTopology, cluster_name: String) -> Self {
|
||||
Self {
|
||||
name,
|
||||
linux_host,
|
||||
cluster_name,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Topology for K3DTopology {
|
||||
fn name(&self) -> &str {
|
||||
&self.name
|
||||
}
|
||||
}
|
||||
|
||||
impl CommandCapability for K3DTopology {
|
||||
fn execute_command(&self, command: &str, args: &Vec<String>) -> Result<String, String> {
|
||||
self.linux_host.execute_command(command, args)
|
||||
}
|
||||
}
|
||||
|
||||
impl KubernetesCapability for K3DTopology {
|
||||
fn apply_manifest(&self, manifest: &str) -> Result<(), String> {
|
||||
println!("Applying manifest to K3D cluster '{}'", self.cluster_name);
|
||||
// Write manifest to a temporary file
|
||||
let temp_file = format!("/tmp/manifest-harmony-temp.yaml");
|
||||
|
||||
// Use the linux_host directly to avoid capability trait bounds
|
||||
self.linux_host
|
||||
.execute_command("bash", &Vec::from(["-c".to_string(), format!("cat > {}", temp_file)]))?;
|
||||
|
||||
// Apply with kubectl
|
||||
self.linux_host.execute_command("kubectl", &Vec::from([
|
||||
"--context".to_string(),
|
||||
format!("k3d-{}", self.cluster_name),
|
||||
"apply".to_string(),
|
||||
"-f".to_string(),
|
||||
temp_file.to_string(),
|
||||
]))?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn get_resource(&self, resource_type: &str, name: &str) -> Result<String, String> {
|
||||
println!(
|
||||
"Getting resource {}/{} from K3D cluster '{}'",
|
||||
resource_type, name, self.cluster_name
|
||||
);
|
||||
self.linux_host.execute_command("kubectl", &Vec::from([
|
||||
"--context".to_string(),
|
||||
format!("k3d-{}", self.cluster_name),
|
||||
"get".to_string(),
|
||||
resource_type.to_string(),
|
||||
name.to_string(),
|
||||
"-o".to_string(),
|
||||
"yaml".to_string(),
|
||||
]))
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
pub struct LinuxHostTopology {
|
||||
name: String,
|
||||
host: String,
|
||||
}
|
||||
impl Capability for LinuxHostTopology {}
|
||||
|
||||
impl LinuxHostTopology {
|
||||
pub fn new(name: String, host: String) -> Self {
|
||||
Self { name, host }
|
||||
}
|
||||
}
|
||||
|
||||
impl Topology for LinuxHostTopology {
|
||||
fn name(&self) -> &str {
|
||||
&self.name
|
||||
}
|
||||
}
|
||||
|
||||
impl CommandCapability for LinuxHostTopology {
|
||||
fn execute_command(&self, command: &str, args: &Vec<String>) -> Result<String, String> {
|
||||
println!("Executing on {}: {} {:?}", self.host, command, args);
|
||||
// In a real implementation, this would SSH to the host and execute the command
|
||||
let output = Command::new(command)
|
||||
.args(args)
|
||||
.output()
|
||||
.map_err(|e| e.to_string())?;
|
||||
|
||||
if output.status.success() {
|
||||
Ok(String::from_utf8_lossy(&output.stdout).to_string())
|
||||
} else {
|
||||
Err(String::from_utf8_lossy(&output.stderr).to_string())
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
// --- Main Function Adapated ---
|
||||
fn main() {
|
||||
// --- Linux Host ---
|
||||
let linux_host = LinuxHostTopology::new("dev-machine".to_string(), "localhost".to_string());
|
||||
let mut linux_maestro = Maestro::new(linux_host);
|
||||
|
||||
let df_score = CommandScore::new(
|
||||
"check-disk".to_string(),
|
||||
"df".to_string(),
|
||||
vec!["-h".to_string()],
|
||||
);
|
||||
|
||||
// Registration uses the generic method, compiler checks CommandScore: Score<LinuxHostTopology>
|
||||
linux_maestro.register_score(df_score.clone()).unwrap(); // clone needed if df_score used later
|
||||
|
||||
// --- K3D Host ---
|
||||
let k3d_host = LinuxHostTopology::new("k3d-host".to_string(), "localhost".to_string());
|
||||
let k3d_topology = K3DTopology::new(
|
||||
"dev-cluster".to_string(),
|
||||
k3d_host,
|
||||
"devcluster".to_string(),
|
||||
);
|
||||
let mut k3d_maestro = Maestro::new(k3d_topology);
|
||||
|
||||
let nodes_score = CommandScore::new(
|
||||
"check-nodes".to_string(),
|
||||
"kubectl".to_string(),
|
||||
vec!["get".to_string(), "nodes".to_string()],
|
||||
);
|
||||
let nginx_score = K8sResourceScore::new(
|
||||
"deploy-nginx".to_string(),
|
||||
// ... manifest string ...
|
||||
r#"..."#.to_string(),
|
||||
);
|
||||
|
||||
// Compiler checks CommandScore: Score<K3DTopology>
|
||||
k3d_maestro.register_score(nodes_score.clone()).unwrap();
|
||||
// Compiler checks K8sResourceScore: Score<K3DTopology>
|
||||
k3d_maestro.register_score(nginx_score.clone()).unwrap();
|
||||
|
||||
|
||||
// --- TUI Example Usage ---
|
||||
let mut tui = HarmonyTui::new();
|
||||
// Add score *definitions* to the TUI
|
||||
tui.add_available_score(Box::new(df_score));
|
||||
tui.add_available_score(Box::new(nodes_score));
|
||||
tui.add_available_score(Box::new(nginx_score));
|
||||
|
||||
tui.display_scores();
|
||||
|
||||
// Simulate user selecting score 0 (check-disk) and adding to linux_maestro
|
||||
match tui.add_selected_score_to_maestro(0, &mut linux_maestro) {
|
||||
Ok(_) => println!("Successfully registered check-disk to linux_maestro via TUI selection"),
|
||||
Err(e) => println!("Failed: {}", e), // Should succeed
|
||||
}
|
||||
|
||||
// Simulate user selecting score 2 (deploy-nginx) and adding to linux_maestro
|
||||
match tui.add_selected_score_to_maestro(2, &mut linux_maestro) {
|
||||
Ok(_) => println!("Successfully registered deploy-nginx to linux_maestro via TUI selection"), // Should fail!
|
||||
Err(e) => println!("Correctly failed to add deploy-nginx to linux_maestro: {}", e),
|
||||
// The failure happens inside add_selected_score_to_maestro because the
|
||||
// maestro.register_score(ks.clone()) call fails the trait bound check
|
||||
// K8sResourceScore: Score<LinuxHostTopology> is false.
|
||||
}
|
||||
|
||||
// Simulate user selecting score 2 (deploy-nginx) and adding to k3d_maestro
|
||||
match tui.add_selected_score_to_maestro(2, &mut k3d_maestro) {
|
||||
Ok(_) => println!("Successfully registered deploy-nginx to k3d_maestro via TUI selection"), // Should succeed
|
||||
Err(e) => println!("Failed: {}", e),
|
||||
}
|
||||
|
||||
// --- Orchestration ---
|
||||
println!("\n--- Orchestrating Linux Maestro ---");
|
||||
linux_maestro.orchestrate().unwrap();
|
||||
println!("\n--- Orchestrating K3D Maestro ---");
|
||||
k3d_maestro.orchestrate().unwrap();
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user