d96c931a29
This comprehensive refactoring addresses critical architectural issues: IMPORT CYCLE RESOLUTION: • pkg/crypto ↔ pkg/slurp/roles: Created pkg/security/access_levels.go • pkg/ucxl → pkg/dht: Created pkg/storage/interfaces.go • pkg/slurp/leader → pkg/election → pkg/slurp/storage: Moved types to pkg/election/interfaces.go MODULE PATH MIGRATION: • Changed from github.com/anthonyrawlins/bzzz to chorus.services/bzzz • Updated all import statements across 115+ files • Maintains compatibility while removing personal GitHub account dependency TYPE SYSTEM IMPROVEMENTS: • Resolved duplicate type declarations in crypto package • Added missing type definitions (RoleStatus, TimeRestrictions, KeyStatus, KeyRotationResult) • Proper interface segregation to prevent future cycles ARCHITECTURAL BENEFITS: • Build now progresses past structural issues to normal dependency resolution • Cleaner separation of concerns between packages • Eliminates circular dependencies that prevented compilation • Establishes foundation for scalable codebase growth 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
371 lines
18 KiB
Go
371 lines
18 KiB
Go
package distribution
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import (
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"context"
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"crypto/sha256"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"sync"
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"time"
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"chorus.services/bzzz/pkg/dht"
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"chorus.services/bzzz/pkg/crypto"
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"chorus.services/bzzz/pkg/election"
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"chorus.services/bzzz/pkg/ucxl"
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"chorus.services/bzzz/pkg/config"
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slurpContext "chorus.services/bzzz/pkg/slurp/context"
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)
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// ContextDistributor handles distributed context operations via DHT
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//
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// This is the primary interface for distributing context data across the BZZZ
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// cluster using the existing DHT infrastructure with role-based encryption
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// and conflict resolution capabilities.
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type ContextDistributor interface {
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// DistributeContext encrypts and stores context in DHT for role-based access
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// The context is encrypted for each specified role and distributed across
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// the cluster with the configured replication factor
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DistributeContext(ctx context.Context, node *slurpContext.ContextNode, roles []string) error
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// RetrieveContext gets context from DHT and decrypts for the requesting role
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// Automatically handles role-based decryption and returns the resolved context
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RetrieveContext(ctx context.Context, address ucxl.Address, role string) (*slurpContext.ResolvedContext, error)
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// UpdateContext updates existing distributed context with conflict resolution
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// Uses vector clocks and leader coordination for consistent updates
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UpdateContext(ctx context.Context, node *slurpContext.ContextNode, roles []string) (*ConflictResolution, error)
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// DeleteContext removes context from distributed storage
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// Handles distributed deletion across all replicas
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DeleteContext(ctx context.Context, address ucxl.Address) error
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// ListDistributedContexts lists contexts available in the DHT for a role
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// Provides efficient enumeration with role-based filtering
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ListDistributedContexts(ctx context.Context, role string, criteria *DistributionCriteria) ([]*DistributedContextInfo, error)
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// Sync synchronizes local state with distributed DHT
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// Ensures eventual consistency by exchanging metadata with peers
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Sync(ctx context.Context) (*SyncResult, error)
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// Replicate ensures context has the desired replication factor
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// Manages replica placement and health across cluster nodes
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Replicate(ctx context.Context, address ucxl.Address, replicationFactor int) error
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// GetReplicaHealth returns health status of context replicas
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// Provides visibility into replication status and node health
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GetReplicaHealth(ctx context.Context, address ucxl.Address) (*ReplicaHealth, error)
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// GetDistributionStats returns distribution performance statistics
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GetDistributionStats() (*DistributionStatistics, error)
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// SetReplicationPolicy configures replication behavior
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SetReplicationPolicy(policy *ReplicationPolicy) error
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}
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// DHTStorage provides direct DHT storage operations for context data
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type DHTStorage interface {
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// Put stores encrypted context data in the DHT
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Put(ctx context.Context, key string, data []byte, options *DHTStoreOptions) error
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// Get retrieves encrypted context data from the DHT
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Get(ctx context.Context, key string) ([]byte, *DHTMetadata, error)
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// Delete removes data from the DHT
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Delete(ctx context.Context, key string) error
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// Exists checks if data exists in the DHT
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Exists(ctx context.Context, key string) (bool, error)
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// FindProviders finds nodes that have the specified data
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FindProviders(ctx context.Context, key string) ([]string, error)
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// ListKeys lists all keys matching a pattern
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ListKeys(ctx context.Context, pattern string) ([]string, error)
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// GetStats returns DHT operation statistics
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GetStats() (*DHTStatistics, error)
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}
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// ConflictResolver handles conflicts during concurrent context updates
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type ConflictResolver interface {
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// ResolveConflict resolves conflicts between concurrent context updates
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// Uses vector clocks and semantic merging rules for resolution
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ResolveConflict(ctx context.Context, local *slurpContext.ContextNode, remote *slurpContext.ContextNode) (*ConflictResolution, error)
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// DetectConflicts detects potential conflicts before they occur
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// Provides early warning for conflicting operations
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DetectConflicts(ctx context.Context, update *slurpContext.ContextNode) ([]*PotentialConflict, error)
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// MergeContexts merges multiple context versions semantically
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// Combines changes from different sources intelligently
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MergeContexts(ctx context.Context, contexts []*slurpContext.ContextNode) (*slurpContext.ContextNode, error)
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// GetConflictHistory returns history of resolved conflicts
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GetConflictHistory(ctx context.Context, address ucxl.Address) ([]*ConflictResolution, error)
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// SetResolutionStrategy configures conflict resolution strategy
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SetResolutionStrategy(strategy *ResolutionStrategy) error
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}
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// ReplicationManager manages context replication across cluster nodes
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type ReplicationManager interface {
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// EnsureReplication ensures context meets replication requirements
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EnsureReplication(ctx context.Context, address ucxl.Address, factor int) error
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// RepairReplicas repairs missing or corrupted replicas
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RepairReplicas(ctx context.Context, address ucxl.Address) (*RepairResult, error)
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// BalanceReplicas rebalances replicas across cluster nodes
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BalanceReplicas(ctx context.Context) (*RebalanceResult, error)
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// GetReplicationStatus returns current replication status
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GetReplicationStatus(ctx context.Context, address ucxl.Address) (*ReplicationStatus, error)
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// SetReplicationFactor sets the desired replication factor
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SetReplicationFactor(factor int) error
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// GetReplicationStats returns replication statistics
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GetReplicationStats() (*ReplicationStatistics, error)
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}
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// GossipProtocol handles efficient metadata synchronization
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type GossipProtocol interface {
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// StartGossip begins gossip protocol for metadata synchronization
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StartGossip(ctx context.Context) error
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// StopGossip stops gossip protocol
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StopGossip(ctx context.Context) error
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// GossipMetadata exchanges metadata with peer nodes
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GossipMetadata(ctx context.Context, peer string) error
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// GetGossipState returns current gossip protocol state
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GetGossipState() (*GossipState, error)
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// SetGossipInterval configures gossip frequency
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SetGossipInterval(interval time.Duration) error
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// GetGossipStats returns gossip protocol statistics
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GetGossipStats() (*GossipStatistics, error)
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}
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// NetworkManager handles network topology and partition detection
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type NetworkManager interface {
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// DetectPartition detects network partitions in the cluster
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DetectPartition(ctx context.Context) (*PartitionInfo, error)
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// GetTopology returns current network topology
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GetTopology(ctx context.Context) (*NetworkTopology, error)
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// GetPeers returns list of available peer nodes
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GetPeers(ctx context.Context) ([]*PeerInfo, error)
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// CheckConnectivity checks connectivity to peer nodes
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CheckConnectivity(ctx context.Context, peers []string) (*ConnectivityReport, error)
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// RecoverFromPartition attempts to recover from network partition
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RecoverFromPartition(ctx context.Context) (*RecoveryResult, error)
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// GetNetworkStats returns network performance statistics
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GetNetworkStats() (*NetworkStatistics, error)
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}
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// Supporting types for distribution operations
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// DistributionCriteria represents criteria for listing distributed contexts
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type DistributionCriteria struct {
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Tags []string `json:"tags"` // Required tags
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Technologies []string `json:"technologies"` // Required technologies
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MinReplicas int `json:"min_replicas"` // Minimum replica count
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MaxAge *time.Duration `json:"max_age"` // Maximum age
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HealthyOnly bool `json:"healthy_only"` // Only healthy replicas
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Limit int `json:"limit"` // Maximum results
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Offset int `json:"offset"` // Result offset
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}
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// DistributedContextInfo represents information about distributed context
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type DistributedContextInfo struct {
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Address ucxl.Address `json:"address"` // Context address
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Roles []string `json:"roles"` // Accessible roles
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ReplicaCount int `json:"replica_count"` // Number of replicas
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HealthyReplicas int `json:"healthy_replicas"` // Healthy replica count
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LastUpdated time.Time `json:"last_updated"` // Last update time
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Version int64 `json:"version"` // Version number
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Size int64 `json:"size"` // Data size
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Checksum string `json:"checksum"` // Data checksum
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}
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// ConflictResolution represents the result of conflict resolution
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type ConflictResolution struct {
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Address ucxl.Address `json:"address"` // Context address
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ResolutionType ResolutionType `json:"resolution_type"` // How conflict was resolved
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MergedContext *slurpContext.ContextNode `json:"merged_context"` // Resulting merged context
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ConflictingSources []string `json:"conflicting_sources"` // Sources of conflict
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ResolutionTime time.Duration `json:"resolution_time"` // Time taken to resolve
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ResolvedAt time.Time `json:"resolved_at"` // When resolved
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Confidence float64 `json:"confidence"` // Confidence in resolution
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ManualReview bool `json:"manual_review"` // Whether manual review needed
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}
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// ResolutionType represents different types of conflict resolution
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type ResolutionType string
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const (
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ResolutionMerged ResolutionType = "merged" // Contexts were merged
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ResolutionLastWriter ResolutionType = "last_writer" // Last writer wins
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ResolutionLeaderDecision ResolutionType = "leader_decision" // Leader made decision
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ResolutionManual ResolutionType = "manual" // Manual resolution required
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ResolutionFailed ResolutionType = "failed" // Resolution failed
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)
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// PotentialConflict represents a detected potential conflict
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type PotentialConflict struct {
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Address ucxl.Address `json:"address"` // Context address
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ConflictType ConflictType `json:"conflict_type"` // Type of conflict
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Description string `json:"description"` // Conflict description
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Severity ConflictSeverity `json:"severity"` // Conflict severity
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AffectedFields []string `json:"affected_fields"` // Fields in conflict
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Suggestions []string `json:"suggestions"` // Resolution suggestions
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DetectedAt time.Time `json:"detected_at"` // When detected
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}
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// ConflictType represents different types of conflicts
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type ConflictType string
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const (
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ConflictConcurrentUpdate ConflictType = "concurrent_update" // Concurrent updates
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ConflictFieldMismatch ConflictType = "field_mismatch" // Field value mismatch
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ConflictVersionSkew ConflictType = "version_skew" // Version inconsistency
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ConflictRoleAccess ConflictType = "role_access" // Role access conflict
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ConflictSchemaChange ConflictType = "schema_change" // Schema version conflict
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)
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// ConflictSeverity represents conflict severity levels
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type ConflictSeverity string
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const (
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SeverityLow ConflictSeverity = "low" // Low severity - auto-resolvable
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SeverityMedium ConflictSeverity = "medium" // Medium severity - may need review
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SeverityHigh ConflictSeverity = "high" // High severity - needs attention
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SeverityCritical ConflictSeverity = "critical" // Critical - manual intervention required
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)
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// ResolutionStrategy represents conflict resolution strategy configuration
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type ResolutionStrategy struct {
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DefaultResolution ResolutionType `json:"default_resolution"` // Default resolution method
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FieldPriorities map[string]int `json:"field_priorities"` // Field priority mapping
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AutoMergeEnabled bool `json:"auto_merge_enabled"` // Enable automatic merging
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RequireConsensus bool `json:"require_consensus"` // Require node consensus
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LeaderBreaksTies bool `json:"leader_breaks_ties"` // Leader resolves ties
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MaxConflictAge time.Duration `json:"max_conflict_age"` // Max age before escalation
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EscalationRoles []string `json:"escalation_roles"` // Roles for manual escalation
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}
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// SyncResult represents the result of synchronization operation
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type SyncResult struct {
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SyncedContexts int `json:"synced_contexts"` // Contexts synchronized
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ConflictsResolved int `json:"conflicts_resolved"` // Conflicts resolved
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Errors []string `json:"errors"` // Synchronization errors
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SyncTime time.Duration `json:"sync_time"` // Total sync time
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PeersContacted int `json:"peers_contacted"` // Number of peers contacted
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DataTransferred int64 `json:"data_transferred"` // Bytes transferred
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SyncedAt time.Time `json:"synced_at"` // When sync completed
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}
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// ReplicaHealth represents health status of context replicas
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type ReplicaHealth struct {
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Address ucxl.Address `json:"address"` // Context address
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TotalReplicas int `json:"total_replicas"` // Total replica count
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HealthyReplicas int `json:"healthy_replicas"` // Healthy replica count
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FailedReplicas int `json:"failed_replicas"` // Failed replica count
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ReplicaNodes []*ReplicaNode `json:"replica_nodes"` // Individual replica status
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OverallHealth HealthStatus `json:"overall_health"` // Overall health status
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LastChecked time.Time `json:"last_checked"` // When last checked
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RepairNeeded bool `json:"repair_needed"` // Whether repair is needed
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}
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// ReplicaNode represents status of individual replica node
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type ReplicaNode struct {
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NodeID string `json:"node_id"` // Node identifier
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Status ReplicaStatus `json:"status"` // Replica status
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LastSeen time.Time `json:"last_seen"` // When last seen
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Version int64 `json:"version"` // Context version
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Checksum string `json:"checksum"` // Data checksum
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Latency time.Duration `json:"latency"` // Network latency
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NetworkAddress string `json:"network_address"` // Network address
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}
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// ReplicaStatus represents status of individual replica
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type ReplicaStatus string
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const (
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ReplicaHealthy ReplicaStatus = "healthy" // Replica is healthy
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ReplicaStale ReplicaStatus = "stale" // Replica is stale
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ReplicaCorrupted ReplicaStatus = "corrupted" // Replica is corrupted
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ReplicaUnreachable ReplicaStatus = "unreachable" // Replica is unreachable
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ReplicaSyncing ReplicaStatus = "syncing" // Replica is syncing
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)
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// HealthStatus represents overall health status
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type HealthStatus string
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const (
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HealthHealthy HealthStatus = "healthy" // All replicas healthy
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HealthDegraded HealthStatus = "degraded" // Some replicas unhealthy
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HealthCritical HealthStatus = "critical" // Most replicas unhealthy
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HealthFailed HealthStatus = "failed" // All replicas failed
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)
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// ReplicationPolicy represents replication behavior configuration
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type ReplicationPolicy struct {
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DefaultFactor int `json:"default_factor"` // Default replication factor
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MinFactor int `json:"min_factor"` // Minimum replication factor
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MaxFactor int `json:"max_factor"` // Maximum replication factor
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PreferredZones []string `json:"preferred_zones"` // Preferred availability zones
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AvoidSameNode bool `json:"avoid_same_node"` // Avoid same physical node
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ConsistencyLevel ConsistencyLevel `json:"consistency_level"` // Consistency requirements
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RepairThreshold float64 `json:"repair_threshold"` // Health threshold for repair
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RebalanceInterval time.Duration `json:"rebalance_interval"` // Rebalancing frequency
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}
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// ConsistencyLevel represents consistency requirements
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type ConsistencyLevel string
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const (
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ConsistencyEventual ConsistencyLevel = "eventual" // Eventual consistency
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ConsistencyQuorum ConsistencyLevel = "quorum" // Quorum-based consistency
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ConsistencyStrong ConsistencyLevel = "strong" // Strong consistency
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)
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// DHTStoreOptions represents options for DHT storage operations
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type DHTStoreOptions struct {
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ReplicationFactor int `json:"replication_factor"` // Number of replicas
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TTL *time.Duration `json:"ttl,omitempty"` // Time to live
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Priority Priority `json:"priority"` // Storage priority
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Compress bool `json:"compress"` // Whether to compress
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Checksum bool `json:"checksum"` // Whether to checksum
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Metadata map[string]interface{} `json:"metadata"` // Additional metadata
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}
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// Priority represents storage operation priority
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type Priority string
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const (
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PriorityLow Priority = "low" // Low priority
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PriorityNormal Priority = "normal" // Normal priority
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PriorityHigh Priority = "high" // High priority
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PriorityCritical Priority = "critical" // Critical priority
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)
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// DHTMetadata represents metadata for DHT stored data
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type DHTMetadata struct {
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StoredAt time.Time `json:"stored_at"` // When stored
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UpdatedAt time.Time `json:"updated_at"` // When last updated
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Version int64 `json:"version"` // Version number
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Size int64 `json:"size"` // Data size
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Checksum string `json:"checksum"` // Data checksum
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ReplicationFactor int `json:"replication_factor"` // Number of replicas
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TTL *time.Time `json:"ttl,omitempty"` // Time to live
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Metadata map[string]interface{} `json:"metadata"` // Additional metadata
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} |