quantrs2_device/quantum_network/distributed_protocols/implementations/
orchestrator.rs

1//! DistributedQuantumOrchestrator and core config implementations
2
3use super::super::types::*;
4use super::fault_tolerance::ComputationResult;
5use super::load_balancers::CapabilityBasedBalancer;
6use super::metrics::AllocationPlan;
7use super::partitioning::*;
8use super::state_management::*;
9use std::collections::HashMap;
10use std::sync::Arc;
11use std::time::Duration;
12use uuid::Uuid;
13
14// Implementation of Default trait for main config
15impl Default for DistributedComputationConfig {
16    fn default() -> Self {
17        Self {
18            max_partition_size: 50,
19            min_partition_size: 5,
20            load_balancing_strategy: LoadBalancingStrategy::CapabilityBased,
21            fault_tolerance_level: FaultToleranceLevel::Basic {
22                redundancy_factor: 2,
23            },
24            state_synchronization_interval: Duration::from_millis(100),
25            entanglement_distribution_protocol: EntanglementDistributionProtocol::Direct,
26            consensus_protocol: ConsensusProtocol::Raft {
27                election_timeout: Duration::from_millis(500),
28                heartbeat_interval: Duration::from_millis(100),
29            },
30            optimization_objectives: vec![
31                OptimizationObjective::MinimizeLatency { weight: 0.3 },
32                OptimizationObjective::MaximizeFidelity { weight: 0.4 },
33                OptimizationObjective::MinimizeResourceUsage { weight: 0.3 },
34            ],
35        }
36    }
37}
38
39// Basic implementations for the main orchestrator
40impl DistributedQuantumOrchestrator {
41    pub fn new(config: DistributedComputationConfig) -> Self {
42        Self {
43            config,
44            nodes: Arc::new(std::sync::RwLock::new(HashMap::new())),
45            circuit_partitioner: Arc::new(CircuitPartitioner::new()),
46            state_manager: Arc::new(DistributedStateManager::new()),
47            load_balancer: Arc::new(CapabilityBasedBalancer::new()),
48            _private: (),
49        }
50    }
51
52    pub async fn submit_computation(&self, _request: ExecutionRequest) -> Result<Uuid> {
53        // Simplified implementation - execution queue moved to internal implementation
54        Ok(Uuid::new_v4())
55    }
56
57    async fn process_execution_queue(&self) -> Result<()> {
58        // Simplified implementation
59        Ok(())
60    }
61}
62
63// Additional implementation methods
64impl DistributedQuantumOrchestrator {
65    async fn execute_distributed_computation(
66        &self,
67        request: ExecutionRequest,
68    ) -> Result<ComputationResult> {
69        // Partition the circuit across the available nodes (this part is real).
70        let nodes = self.nodes.read().expect("Nodes RwLock poisoned").clone();
71        let partitions =
72            self.circuit_partitioner
73                .partition_circuit(&request.circuit, &nodes, &self.config)?;
74
75        // Distributed execution requires allocating the partitions to live nodes,
76        // teleporting/entangling shared qubits between them, executing each
77        // partition on its node and aggregating the measurement results. None of
78        // that is implemented yet. Returning a fabricated `fidelity: 1.0,
79        // error_rate: 0.0` result would falsely report a perfect distributed run
80        // that never happened, so we return an honest error instead.
81        let _ = &partitions;
82        Err(DistributedComputationError::ResourceAllocation(format!(
83            "Circuit for request {:?} was partitioned into {} sub-circuit(s), but distributed \
84             allocation, cross-node entanglement and result aggregation are not implemented; \
85             refusing to return a fabricated computation result",
86            request.request_id,
87            partitions.len()
88        )))
89    }
90
91    async fn execute_partitions_parallel(
92        &self,
93        partitions: Vec<CircuitPartition>,
94        allocation_plan: AllocationPlan,
95    ) -> Result<Vec<ComputationResult>> {
96        // Simplified implementation
97        let mut results = Vec::new();
98
99        for partition in partitions {
100            if let Some(allocated_node) = allocation_plan.allocations.keys().next() {
101                let result = self
102                    .execute_partition_on_node(&partition, allocated_node)
103                    .await?;
104                results.push(result);
105            }
106        }
107
108        Ok(results)
109    }
110
111    async fn execute_partition_on_node(
112        &self,
113        partition: &CircuitPartition,
114        node_id: &NodeId,
115    ) -> Result<ComputationResult> {
116        // Simplified implementation
117        Ok(ComputationResult {
118            result_id: Uuid::new_v4(),
119            computation_id: partition.partition_id,
120            node_id: node_id.clone(),
121            measurements: HashMap::new(),
122            final_state: None,
123            execution_time: Duration::from_millis(100),
124            fidelity: 0.95,
125            error_rate: 0.01,
126            metadata: HashMap::new(),
127        })
128    }
129
130    fn aggregate_partition_results(
131        &self,
132        results: Vec<ComputationResult>,
133    ) -> Result<ComputationResult> {
134        // Simplified aggregation
135        if let Some(first_result) = results.first() {
136            Ok(first_result.clone())
137        } else {
138            Err(DistributedComputationError::StateSynchronization(
139                "No results to aggregate".to_string(),
140            ))
141        }
142    }
143
144    pub async fn register_node(&self, node_info: NodeInfo) -> Result<()> {
145        let mut nodes = self.nodes.write().expect("Nodes RwLock poisoned");
146        nodes.insert(node_info.node_id.clone(), node_info);
147        Ok(())
148    }
149
150    pub async fn unregister_node(&self, node_id: &NodeId) -> Result<()> {
151        let mut nodes = self.nodes.write().expect("Nodes RwLock poisoned");
152        nodes.remove(node_id);
153        Ok(())
154    }
155
156    pub async fn get_system_status(&self) -> SystemStatus {
157        let nodes = self.nodes.read().expect("Nodes RwLock poisoned");
158
159        SystemStatus {
160            total_nodes: nodes.len() as u32,
161            active_nodes: nodes
162                .values()
163                .filter(|n| matches!(n.status, NodeStatus::Active))
164                .count() as u32,
165            total_qubits: nodes.values().map(|n| n.capabilities.max_qubits).sum(),
166            active_computations: 0, // Simplified
167            system_health: 0.95,    // Simplified
168        }
169    }
170}
171
172/// System status summary
173#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
174pub struct SystemStatus {
175    pub total_nodes: u32,
176    pub active_nodes: u32,
177    pub total_qubits: u32,
178    pub active_computations: u32,
179    pub system_health: f64,
180}
quantrs2_device/quantum_network/distributed_protocols/implementations/orchestrator.rs

quantrs2_device/quantum_network/distributed_protocols/implementations/
orchestrator.rs
