130 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			Rust
		
	
	
	
	
	
			
		
		
	
	
			130 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			Rust
		
	
	
	
	
	
| use std::marker::PhantomData;
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| 
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| // Capability Trait Hierarchy
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| pub trait Capability {}
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| 
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| // Specific Capability Traits
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| pub trait ShellAccess: Capability {}
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| pub trait ContainerRuntime: Capability {}
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| pub trait KubernetesAccess: Capability {}
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| pub trait FileSystemAccess: Capability {}
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| 
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| // Topology Trait - Defines the core interface for infrastructure topologies
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| pub trait Topology {
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|     type Capabilities: Capability;
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|     
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|     fn name(&self) -> &str;
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| }
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| 
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| // Score Trait - Defines the core interface for infrastructure transformation
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| pub trait Score {
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|     type RequiredCapabilities: Capability;
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|     type OutputTopology: Topology;
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| 
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|     fn apply<T: Topology>(&self, topology: T) -> Result<Self::OutputTopology, String>;
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| }
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| 
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| // Linux Host Topology
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| pub struct LinuxHostTopology;
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| 
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| impl Topology for LinuxHostTopology {
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|     type Capabilities = dyn ShellAccess + FileSystemAccess;
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| 
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|     fn name(&self) -> &str {
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|         "Linux Host"
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|     }
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| }
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| 
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| impl ShellAccess for LinuxHostTopology {}
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| impl FileSystemAccess for LinuxHostTopology {}
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| 
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| // K3D Topology
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| pub struct K3DTopology;
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| 
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| impl Topology for K3DTopology {
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|     type Capabilities = dyn ContainerRuntime + KubernetesAccess + ShellAccess;
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| 
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|     fn name(&self) -> &str {
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|         "K3D Kubernetes Cluster"
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|     }
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| }
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| 
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| impl ContainerRuntime for K3DTopology {}
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| impl KubernetesAccess for K3DTopology {}
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| impl ShellAccess for K3DTopology {}
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| 
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| // Command Score - A score that requires shell access
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| pub struct CommandScore {
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|     command: String,
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| }
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| 
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| impl Score for CommandScore {
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|     type RequiredCapabilities = dyn ShellAccess;
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|     type OutputTopology = LinuxHostTopology;
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| 
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|     fn apply<T: Topology>(&self, _topology: T) -> Result<Self::OutputTopology, String> 
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|     where 
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|         T: ShellAccess 
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|     {
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|         // Simulate command execution
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|         println!("Executing command: {}", self.command);
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|         Ok(LinuxHostTopology)
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|     }
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| }
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| 
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| // Kubernetes Resource Score
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| pub struct K8sResourceScore {
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|     resource_definition: String,
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| }
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| 
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| impl Score for K8sResourceScore {
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|     type RequiredCapabilities = dyn KubernetesAccess;
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|     type OutputTopology = K3DTopology;
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| 
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|     fn apply<T: Topology>(&self, _topology: T) -> Result<Self::OutputTopology, String> 
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|     where 
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|         T: dyn KubernetesAccess 
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|     {
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|         // Simulate Kubernetes resource application
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|         println!("Applying K8s resource: {}", self.resource_definition);
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|         Ok(K3DTopology)
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|     }
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| }
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| 
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| // Maestro - The orchestration coordinator
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| pub struct Maestro;
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| 
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| impl Maestro {
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|     // Type-safe score application
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|     pub fn apply_score<T, S>(topology: T, score: S) -> Result<S::OutputTopology, String>
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|     where 
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|         T: Topology,
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|         S: Score,
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|         T: S::RequiredCapabilities
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|     {
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|         score.apply(topology)
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|     }
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| }
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| 
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| fn main() {
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|     // Example usage demonstrating type-driven design
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|     let linux_host = LinuxHostTopology;
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|     let k3d_cluster = K3DTopology;
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| 
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|     // Command score on Linux host
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|     let command_score = CommandScore {
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|         command: "echo 'Hello, World!'".to_string(),
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|     };
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| 
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|     let result = Maestro::apply_score(linux_host, command_score)
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|         .expect("Command score application failed");
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| 
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|     // K8s resource score on K3D cluster
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|     let k8s_score = K8sResourceScore {
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|         resource_definition: "apiVersion: v1\nkind: Pod\n...".to_string(),
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|     };
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| 
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|     let k8s_result = Maestro::apply_score(k3d_cluster, k8s_score)
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|         .expect("K8s resource score application failed");
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| }
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