chore: Move ADR helper files into folders with their corresponding ADR number
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This commit is contained in:
2025-06-09 13:39:38 -04:00
parent ee2bba5623
commit 00e71b97f6
17 changed files with 0 additions and 0 deletions

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[package]
name = "example-topology2"
edition = "2024"
version.workspace = true
readme.workspace = true
license.workspace = true
publish = false
[dependencies]

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// Clean capability-based design using type parameters
trait Capability {}
trait K8sCapability: Capability {
fn deploy_k8s_resource(&self, resource_yaml: &str);
fn execute_kubectl(&self, command: &str) -> String;
}
trait LinuxCapability: Capability {
fn execute_command(&self, command: &str, args: &[&str]);
fn download_file(&self, url: &str, destination: &str) -> Result<(), String>;
}
trait LoadBalancerCapability: Capability {
fn configure_load_balancer(&self, services: &[&str], port: u16);
fn get_load_balancer_status(&self) -> String;
}
// Score trait with capability type parameter
trait Score<C: ?Sized> {
fn execute(&self, capability: &C) -> String;
}
// Topology implementations with marker trait
trait Topology {}
struct K3DTopology {}
impl Topology for K3DTopology {}
impl Capability for K3DTopology {}
impl K8sCapability for K3DTopology {
fn deploy_k8s_resource(&self, resource_yaml: &str) {
todo!()
}
fn execute_kubectl(&self, command: &str) -> String {
todo!()
}
// Implementation...
}
struct LinuxTopology {}
impl Topology for LinuxTopology {}
impl Capability for LinuxTopology {}
impl LinuxCapability for LinuxTopology {
fn execute_command(&self, command: &str, args: &[&str]) {
todo!()
}
fn download_file(&self, url: &str, destination: &str) -> Result<(), String> {
todo!()
}
// Implementation...
}
struct OKDHaClusterTopology {}
impl Topology for OKDHaClusterTopology {}
impl Capability for OKDHaClusterTopology {}
impl K8sCapability for OKDHaClusterTopology {
fn deploy_k8s_resource(&self, resource_yaml: &str) {
todo!()
}
fn execute_kubectl(&self, command: &str) -> String {
todo!()
}
// Implementation...
}
impl LinuxCapability for OKDHaClusterTopology {
fn execute_command(&self, command: &str, args: &[&str]) {
todo!()
}
fn download_file(&self, url: &str, destination: &str) -> Result<(), String> {
todo!()
}
// Implementation...
}
impl LoadBalancerCapability for OKDHaClusterTopology {
fn configure_load_balancer(&self, services: &[&str], port: u16) {
todo!()
}
fn get_load_balancer_status(&self) -> String {
todo!()
}
// Implementation...
}
// Score implementations
struct LAMPScore {}
impl Score<dyn K8sCapability> for LAMPScore {
fn execute(&self, capability: &dyn K8sCapability) -> String {
todo!()
// Implementation...
}
}
struct BinaryScore {}
impl Score<dyn LinuxCapability> for BinaryScore {
fn execute(&self, capability: &dyn LinuxCapability) -> String {
todo!()
// Implementation...
}
}
struct LoadBalancerScore {}
impl Score<dyn LoadBalancerCapability> for LoadBalancerScore {
fn execute(&self, capability: &dyn LoadBalancerCapability) -> String {
todo!()
// Implementation...
}
}
// Generic Maestro
struct Maestro<T> {
topology: T,
scores: Vec<Box<dyn FnMut(&T) -> String>>,
}
impl<T: 'static> Maestro<T> {
fn new(topology: T) -> Self {
Self {
topology,
scores: Vec::new(),
}
}
fn interpret_all(&mut self) -> Vec<String> {
self.scores.iter_mut()
.map(|score| score(&self.topology))
.collect()
}
}
// Capability-specific extensions
impl<T: K8sCapability + 'static> Maestro<T> {
fn register_k8s_score<S: Score<dyn K8sCapability> + 'static>(&mut self, score: S) {
let score_box = Box::new(move |topology: &T| {
score.execute(topology as &dyn K8sCapability)
});
self.scores.push(score_box);
}
}
impl<T: LinuxCapability + 'static> Maestro<T> {
fn register_linux_score<S: Score<dyn LinuxCapability> + 'static>(&mut self, score: S) {
let score_box = Box::new(move |topology: &T| {
score.execute(topology as &dyn LinuxCapability)
});
self.scores.push(score_box);
}
}
impl<T: LoadBalancerCapability + 'static> Maestro<T> {
fn register_lb_score<S: Score<dyn LoadBalancerCapability> + 'static>(&mut self, score: S) {
let score_box = Box::new(move |topology: &T| {
score.execute(topology as &dyn LoadBalancerCapability)
});
self.scores.push(score_box);
}
}
fn main() {
// Example usage
let k3d = K3DTopology {};
let mut k3d_maestro = Maestro::new(k3d);
// These will compile because K3D implements K8sCapability
k3d_maestro.register_k8s_score(LAMPScore {});
// This would not compile because K3D doesn't implement LoadBalancerCapability
// k3d_maestro.register_lb_score(LoadBalancerScore {});
let linux = LinuxTopology {};
let mut linux_maestro = Maestro::new(linux);
// This will compile because Linux implements LinuxCapability
linux_maestro.register_linux_score(BinaryScore {});
// This would not compile because Linux doesn't implement K8sCapability
// linux_maestro.register_k8s_score(LAMPScore {});
}

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fn main() {
// Create various topologies
let okd_topology = OKDHaClusterTopology::new();
let k3d_topology = K3DTopology::new();
let linux_topology = LinuxTopology::new();
// Create scores
let lamp_score = LAMPScore::new("MySQL 8.0", "PHP 8.1", "Apache 2.4");
let binary_score = BinaryScore::new("https://example.com/binary", vec!["--arg1", "--arg2"]);
let load_balancer_score = LoadBalancerScore::new(vec!["service1", "service2"], 80);
// Example 1: Running LAMP stack on OKD
println!("\n=== Deploying LAMP stack on OKD cluster ===");
lamp_score.execute(&okd_topology);
// Example 2: Running LAMP stack on K3D
println!("\n=== Deploying LAMP stack on K3D cluster ===");
lamp_score.execute(&k3d_topology);
// Example 3: Running binary on Linux host
println!("\n=== Running binary on Linux host ===");
binary_score.execute(&linux_topology);
// Example 4: Running binary on OKD (which can also run Linux commands)
println!("\n=== Running binary on OKD host ===");
binary_score.execute(&okd_topology);
// Example 5: Load balancer configuration on OKD
println!("\n=== Configuring load balancer on OKD ===");
load_balancer_score.execute(&okd_topology);
// The following would not compile:
// load_balancer_score.execute(&k3d_topology); // K3D doesn't implement LoadBalancerCapability
// lamp_score.execute(&linux_topology); // Linux doesn't implement K8sCapability
}
// Base Topology trait
trait Topology {
fn name(&self) -> &str;
}
// Define capabilities
trait K8sCapability {
fn deploy_k8s_resource(&self, resource_yaml: &str);
fn execute_kubectl(&self, command: &str) -> String;
}
trait OKDCapability: K8sCapability {
fn execute_oc(&self, command: &str) -> String;
}
trait LinuxCapability {
fn execute_command(&self, command: &str, args: &[&str]) -> String;
fn download_file(&self, url: &str, destination: &str) -> Result<(), String>;
}
trait LoadBalancerCapability {
fn configure_load_balancer(&self, services: &[&str], port: u16);
fn get_load_balancer_status(&self) -> String;
}
trait FirewallCapability {
fn open_port(&self, port: u16, protocol: &str);
fn close_port(&self, port: u16, protocol: &str);
}
trait RouterCapability {
fn configure_route(&self, service: &str, hostname: &str);
}
// Topology implementations
struct OKDHaClusterTopology {
cluster_name: String,
}
impl OKDHaClusterTopology {
fn new() -> Self {
Self {
cluster_name: "okd-ha-cluster".to_string(),
}
}
}
impl Topology for OKDHaClusterTopology {
fn name(&self) -> &str {
&self.cluster_name
}
}
impl K8sCapability for OKDHaClusterTopology {
fn deploy_k8s_resource(&self, resource_yaml: &str) {
println!("Deploying K8s resource on OKD cluster: {}", resource_yaml);
}
fn execute_kubectl(&self, command: &str) -> String {
println!("Executing kubectl command on OKD cluster: {}", command);
"kubectl command output".to_string()
}
}
impl OKDCapability for OKDHaClusterTopology {
fn execute_oc(&self, command: &str) -> String {
println!("Executing oc command on OKD cluster: {}", command);
"oc command output".to_string()
}
}
impl LinuxCapability for OKDHaClusterTopology {
fn execute_command(&self, command: &str, args: &[&str]) -> String {
println!(
"Executing command '{}' with args {:?} on OKD node",
command, args
);
todo!()
}
fn download_file(&self, url: &str, destination: &str) -> Result<(), String> {
println!(
"Downloading file from {} to {} on OKD node",
url, destination
);
Ok(())
}
}
impl LoadBalancerCapability for OKDHaClusterTopology {
fn configure_load_balancer(&self, services: &[&str], port: u16) {
println!(
"Configuring load balancer for services {:?} on port {} in OKD",
services, port
);
}
fn get_load_balancer_status(&self) -> String {
"OKD Load Balancer: HEALTHY".to_string()
}
}
impl FirewallCapability for OKDHaClusterTopology {
fn open_port(&self, port: u16, protocol: &str) {
println!(
"Opening port {} with protocol {} on OKD firewall",
port, protocol
);
}
fn close_port(&self, port: u16, protocol: &str) {
println!(
"Closing port {} with protocol {} on OKD firewall",
port, protocol
);
}
}
impl RouterCapability for OKDHaClusterTopology {
fn configure_route(&self, service: &str, hostname: &str) {
println!(
"Configuring route for service {} with hostname {} on OKD",
service, hostname
);
}
}
struct K3DTopology {
cluster_name: String,
}
impl K3DTopology {
fn new() -> Self {
Self {
cluster_name: "k3d-local".to_string(),
}
}
}
impl Topology for K3DTopology {
fn name(&self) -> &str {
&self.cluster_name
}
}
impl K8sCapability for K3DTopology {
fn deploy_k8s_resource(&self, resource_yaml: &str) {
println!("Deploying K8s resource on K3D cluster: {}", resource_yaml);
}
fn execute_kubectl(&self, command: &str) -> String {
println!("Executing kubectl command on K3D cluster: {}", command);
"kubectl command output from K3D".to_string()
}
}
struct LinuxTopology {
hostname: String,
}
impl LinuxTopology {
fn new() -> Self {
Self {
hostname: "linux-host".to_string(),
}
}
}
impl Topology for LinuxTopology {
fn name(&self) -> &str {
&self.hostname
}
}
impl LinuxCapability for LinuxTopology {
fn execute_command(&self, command: &str, args: &[&str]) -> String {
println!(
"Executing command '{}' with args {:?} on Linux host",
command, args
);
todo!()
}
fn download_file(&self, url: &str, destination: &str) -> Result<(), String> {
println!(
"Downloading file from {} to {} on Linux host",
url, destination
);
Ok(())
}
}
// Score implementations
struct LAMPScore {
mysql_version: String,
php_version: String,
apache_version: String,
}
impl LAMPScore {
fn new(mysql_version: &str, php_version: &str, apache_version: &str) -> Self {
Self {
mysql_version: mysql_version.to_string(),
php_version: php_version.to_string(),
apache_version: apache_version.to_string(),
}
}
fn execute<T: K8sCapability>(&self, topology: &T) {
// Deploy MySQL
topology.deploy_k8s_resource("mysql-deployment.yaml");
// Deploy PHP
topology.deploy_k8s_resource("php-deployment.yaml");
// Deploy Apache
topology.deploy_k8s_resource("apache-deployment.yaml");
// Create service
topology.deploy_k8s_resource("lamp-service.yaml");
// Check deployment
let status = topology.execute_kubectl("get pods -l app=lamp");
println!("LAMP deployment status: {}", status);
}
}
struct BinaryScore {
url: String,
args: Vec<String>,
}
impl BinaryScore {
fn new(url: &str, args: Vec<&str>) -> Self {
Self {
url: url.to_string(),
args: args.iter().map(|s| s.to_string()).collect(),
}
}
fn execute<T: LinuxCapability>(&self, topology: &T) {
let destination = "/tmp/binary";
match topology.download_file(&self.url, destination) {
Ok(_) => {
println!("Binary downloaded successfully");
// Convert args to slice of &str
let args: Vec<&str> = self.args.iter().map(|s| s.as_str()).collect();
// Execute the binary
topology.execute_command(destination, &args);
println!("Binary execution completed");
}
Err(e) => {
println!("Failed to download binary: {}", e);
}
}
}
}
struct LoadBalancerScore {
services: Vec<String>,
port: u16,
}
impl LoadBalancerScore {
fn new(services: Vec<&str>, port: u16) -> Self {
Self {
services: services.iter().map(|s| s.to_string()).collect(),
port,
}
}
fn execute<T: LoadBalancerCapability>(&self, topology: &T) {
println!("Configuring load balancer for services");
// Convert services to slice of &str
let services: Vec<&str> = self.services.iter().map(|s| s.as_str()).collect();
// Configure load balancer
topology.configure_load_balancer(&services, self.port);
// Check status
let status = topology.get_load_balancer_status();
println!("Load balancer status: {}", status);
}
}

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fn main() {}
trait Topology {}
struct DummyTopology {}
impl Topology for DummyTopology {}
impl Topology for LampTopology {}
struct LampTopology {}
struct Maestro {
topology: Box<dyn Topology>,
}
trait Score {
type Topology: Topology;
fn execute(&self, topology: &Self::Topology);
}
struct K8sScore {}
impl Score for K8sScore {
type Topology = LampTopology;
fn execute(&self, topology: &Box<dyn Self::Topology>) {
todo!()
}
}
impl Maestro {
pub fn execute<T: Topology>(&self, score: Box<dyn Score<Topology = T>>) {
score.execute(&self.topology);
}
}

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fn main() {
// Example usage
let lamp_topology = LampTopology {};
let k8s_score = K8sScore {};
let docker_topology = DockerTopology{};
// Type-safe execution
let maestro = Maestro::new(Box::new(docker_topology));
maestro.execute(&k8s_score); // This will work
// This would fail at compile time if we tried:
// let dummy_topology = DummyTopology {};
// let maestro = Maestro::new(Box::new(dummy_topology));
// maestro.execute(&k8s_score); // Error: expected LampTopology, found DummyTopology
}
// Base trait for all topologies
trait Topology {
// Common topology methods could go here
fn topology_type(&self) -> &str;
}
struct DummyTopology {}
impl Topology for DummyTopology {
fn topology_type(&self) -> &str { "Dummy" }
}
struct LampTopology {}
impl Topology for LampTopology {
fn topology_type(&self) -> &str { "LAMP" }
}
struct DockerTopology {}
impl Topology for DockerTopology {
fn topology_type(&self) -> &str {
todo!("DockerTopology")
}
}
// The Score trait with an associated type for the required topology
trait Score {
type RequiredTopology: Topology + ?Sized;
fn execute(&self, topology: &Self::RequiredTopology);
fn score_type(&self) -> &str;
}
// A score that requires LampTopology
struct K8sScore {}
impl Score for K8sScore {
type RequiredTopology = DockerTopology;
fn execute(&self, topology: &Self::RequiredTopology) {
println!("Executing K8sScore on {} topology", topology.topology_type());
// Implementation details...
}
fn score_type(&self) -> &str { "K8s" }
}
// A generic maestro that can work with any topology type
struct Maestro<T: Topology + ?Sized> {
topology: Box<T>,
}
impl<T: Topology + ?Sized> Maestro<T> {
pub fn new(topology: Box<T>) -> Self {
Maestro { topology }
}
// Execute a score that requires this specific topology type
pub fn execute<S: Score<RequiredTopology = T>>(&self, score: &S) {
println!("Maestro executing {} score", score.score_type());
score.execute(&*self.topology);
}
}

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fn main() {
// Create topologies
let okd_topology = OKDHaClusterTopology::new();
let k3d_topology = K3DTopology::new();
let linux_topology = LinuxTopology::new();
// Create scores - boxing them as trait objects for dynamic dispatch
let scores: Vec<Box<dyn Score>> = vec![
Box::new(LAMPScore::new("MySQL 8.0", "PHP 8.1", "Apache 2.4")),
Box::new(BinaryScore::new("https://example.com/binary", vec!["--arg1", "--arg2"])),
Box::new(LoadBalancerScore::new(vec!["service1", "service2"], 80)),
];
// Running scores on OKD topology (which has all capabilities)
println!("\n=== Running all scores on OKD HA Cluster ===");
for score in &scores {
match score.execute(&okd_topology) {
Ok(result) => println!("Score executed successfully: {}", result),
Err(e) => println!("Failed to execute score: {}", e),
}
}
// Running scores on K3D topology (only has K8s capability)
println!("\n=== Running scores on K3D Cluster ===");
for score in &scores {
match score.execute(&k3d_topology) {
Ok(result) => println!("Score executed successfully: {}", result),
Err(e) => println!("Failed to execute score: {}", e),
}
}
// Running scores on Linux topology (only has Linux capability)
println!("\n=== Running scores on Linux Host ===");
for score in &scores {
match score.execute(&linux_topology) {
Ok(result) => println!("Score executed successfully: {}", result),
Err(e) => println!("Failed to execute score: {}", e),
}
}
}
// Base Topology trait
trait Topology: Any {
fn name(&self) -> &str;
// This method allows us to get type information at runtime
fn as_any(&self) -> &dyn Any;
}
// Use Any trait for runtime type checking
use std::any::Any;
// Define capabilities
trait K8sCapability {
fn deploy_k8s_resource(&self, resource_yaml: &str);
fn execute_kubectl(&self, command: &str) -> String;
}
trait OKDCapability: K8sCapability {
fn execute_oc(&self, command: &str) -> String;
}
trait LinuxCapability {
fn execute_command(&self, command: &str, args: &[&str]);
fn download_file(&self, url: &str, destination: &str) -> Result<(), String>;
}
trait LoadBalancerCapability {
fn configure_load_balancer(&self, services: &[&str], port: u16);
fn get_load_balancer_status(&self) -> String;
}
// Base Score trait with dynamic dispatch
trait Score {
// Generic execute method that takes any topology
fn execute(&self, topology: &dyn Topology) -> Result<String, String>;
// Optional method to get score type for better error messages
fn score_type(&self) -> &str;
}
// Topology implementations
struct OKDHaClusterTopology {
cluster_name: String,
}
impl OKDHaClusterTopology {
fn new() -> Self {
Self { cluster_name: "okd-ha-cluster".to_string() }
}
}
impl Topology for OKDHaClusterTopology {
fn name(&self) -> &str {
&self.cluster_name
}
fn as_any(&self) -> &dyn Any {
self
}
}
impl K8sCapability for OKDHaClusterTopology {
fn deploy_k8s_resource(&self, resource_yaml: &str) {
println!("Deploying K8s resource on OKD cluster: {}", resource_yaml);
}
fn execute_kubectl(&self, command: &str) -> String {
println!("Executing kubectl command on OKD cluster: {}", command);
"kubectl command output".to_string()
}
}
impl OKDCapability for OKDHaClusterTopology {
fn execute_oc(&self, command: &str) -> String {
println!("Executing oc command on OKD cluster: {}", command);
"oc command output".to_string()
}
}
impl LinuxCapability for OKDHaClusterTopology {
fn execute_command(&self, command: &str, args: &[&str]) {
println!("Executing command '{}' with args {:?} on OKD node", command, args);
}
fn download_file(&self, url: &str, destination: &str) -> Result<(), String> {
println!("Downloading file from {} to {} on OKD node", url, destination);
Ok(())
}
}
impl LoadBalancerCapability for OKDHaClusterTopology {
fn configure_load_balancer(&self, services: &[&str], port: u16) {
println!("Configuring load balancer for services {:?} on port {} in OKD", services, port);
}
fn get_load_balancer_status(&self) -> String {
"OKD Load Balancer: HEALTHY".to_string()
}
}
struct K3DTopology {
cluster_name: String,
}
impl K3DTopology {
fn new() -> Self {
Self { cluster_name: "k3d-local".to_string() }
}
}
impl Topology for K3DTopology {
fn name(&self) -> &str {
&self.cluster_name
}
fn as_any(&self) -> &dyn Any {
self
}
}
impl K8sCapability for K3DTopology {
fn deploy_k8s_resource(&self, resource_yaml: &str) {
println!("Deploying K8s resource on K3D cluster: {}", resource_yaml);
}
fn execute_kubectl(&self, command: &str) -> String {
println!("Executing kubectl command on K3D cluster: {}", command);
"kubectl command output from K3D".to_string()
}
}
struct LinuxTopology {
hostname: String,
}
impl LinuxTopology {
fn new() -> Self {
Self { hostname: "linux-host".to_string() }
}
}
impl Topology for LinuxTopology {
fn name(&self) -> &str {
&self.hostname
}
fn as_any(&self) -> &dyn Any {
self
}
}
impl LinuxCapability for LinuxTopology {
fn execute_command(&self, command: &str, args: &[&str]) {
println!("Executing command '{}' with args {:?} on Linux host", command, args);
}
fn download_file(&self, url: &str, destination: &str) -> Result<(), String> {
println!("Downloading file from {} to {} on Linux host", url, destination);
Ok(())
}
}
// Score implementations using dynamic capability checks
struct LAMPScore {
mysql_version: String,
php_version: String,
apache_version: String,
}
impl LAMPScore {
fn new(mysql_version: &str, php_version: &str, apache_version: &str) -> Self {
Self {
mysql_version: mysql_version.to_string(),
php_version: php_version.to_string(),
apache_version: apache_version.to_string(),
}
}
// Helper method for typesafe execution
fn execute_with_k8s(&self, topology: &dyn K8sCapability) -> String {
println!("Deploying LAMP stack with MySQL {}, PHP {}, Apache {}",
self.mysql_version, self.php_version, self.apache_version);
// Deploy MySQL
topology.deploy_k8s_resource("mysql-deployment.yaml");
// Deploy PHP
topology.deploy_k8s_resource("php-deployment.yaml");
// Deploy Apache
topology.deploy_k8s_resource("apache-deployment.yaml");
// Create service
topology.deploy_k8s_resource("lamp-service.yaml");
// Check deployment
let status = topology.execute_kubectl("get pods -l app=lamp");
format!("LAMP deployment status: {}", status)
}
}
impl Score for LAMPScore {
fn execute(&self, topology: &dyn Topology) -> Result<String, String> {
// Try to downcast to K8sCapability
if let Some(k8s_topology) = topology.as_any().downcast_ref::<OKDHaClusterTopology>() {
Ok(self.execute_with_k8s(k8s_topology))
} else if let Some(k8s_topology) = topology.as_any().downcast_ref::<K3DTopology>() {
Ok(self.execute_with_k8s(k8s_topology))
} else {
Err(format!("LAMPScore requires K8sCapability but topology {} doesn't provide it",
topology.name()))
}
}
fn score_type(&self) -> &str {
"LAMP"
}
}
struct BinaryScore {
url: String,
args: Vec<String>,
}
impl BinaryScore {
fn new(url: &str, args: Vec<&str>) -> Self {
Self {
url: url.to_string(),
args: args.iter().map(|s| s.to_string()).collect(),
}
}
// Helper method for typesafe execution
fn execute_with_linux(&self, topology: &dyn LinuxCapability) -> Result<String, String> {
let destination = "/tmp/binary";
// Download the binary
println!("Preparing to run binary from {}", self.url);
match topology.download_file(&self.url, destination) {
Ok(_) => {
println!("Binary downloaded successfully");
// Convert args to slice of &str
let args: Vec<&str> = self.args.iter().map(|s| s.as_str()).collect();
// Execute the binary
topology.execute_command(destination, &args);
Ok("Binary execution completed successfully".to_string())
},
Err(e) => {
Err(format!("Failed to download binary: {}", e))
}
}
}
}
impl Score for BinaryScore {
fn execute(&self, topology: &dyn Topology) -> Result<String, String> {
// Try to downcast to LinuxCapability
if let Some(linux_topology) = topology.as_any().downcast_ref::<OKDHaClusterTopology>() {
self.execute_with_linux(linux_topology)
} else if let Some(linux_topology) = topology.as_any().downcast_ref::<LinuxTopology>() {
self.execute_with_linux(linux_topology)
} else {
Err(format!("BinaryScore requires LinuxCapability but topology {} doesn't provide it",
topology.name()))
}
}
fn score_type(&self) -> &str {
"Binary"
}
}
struct LoadBalancerScore {
services: Vec<String>,
port: u16,
}
impl LoadBalancerScore {
fn new(services: Vec<&str>, port: u16) -> Self {
Self {
services: services.iter().map(|s| s.to_string()).collect(),
port,
}
}
// Helper method for typesafe execution
fn execute_with_lb(&self, topology: &dyn LoadBalancerCapability) -> String {
println!("Configuring load balancer for services");
// Convert services to slice of &str
let services: Vec<&str> = self.services.iter().map(|s| s.as_str()).collect();
// Configure load balancer
topology.configure_load_balancer(&services, self.port);
// Check status
let status = topology.get_load_balancer_status();
format!("Load balancer configured successfully. Status: {}", status)
}
}
impl Score for LoadBalancerScore {
fn execute(&self, topology: &dyn Topology) -> Result<String, String> {
// Only OKDHaClusterTopology implements LoadBalancerCapability
if let Some(lb_topology) = topology.as_any().downcast_ref::<OKDHaClusterTopology>() {
Ok(self.execute_with_lb(lb_topology))
} else {
Err(format!("LoadBalancerScore requires LoadBalancerCapability but topology {} doesn't provide it",
topology.name()))
}
}
fn score_type(&self) -> &str {
"LoadBalancer"
}
}