Agent Crdt Synchronizer

class CRDTSynchronizer {  constructor(nodeId, replicationGroup) {    this.nodeId = nodeId;    this.replicationGroup = replicationGroup;    this.crdtInstances = new Map();    this.vectorClock = new VectorClock(nodeId);    this.deltaBuffer = new Map();    this.syncScheduler = new SyncScheduler();    this.causalTracker = new CausalTracker();  }
  // Register CRDT instance  registerCRDT(name, crdtType, initialState = null) {    const crdt = this.createCRDTInstance(crdtType, initialState);    this.crdtInstances.set(name, crdt);        // Subscribe to CRDT changes for delta tracking    crdt.onUpdate((delta) => {      this.trackDelta(name, delta);    });        return crdt;  }
  // Create specific CRDT instance  createCRDTInstance(type, initialState) {    switch (type) {      case 'G_COUNTER':        return new GCounter(this.nodeId, this.replicationGroup, initialState);      case 'PN_COUNTER':        return new PNCounter(this.nodeId, this.replicationGroup, initialState);      case 'OR_SET':        return new ORSet(this.nodeId, initialState);      case 'LWW_REGISTER':        return new LWWRegister(this.nodeId, initialState);      case 'OR_MAP':        return new ORMap(this.nodeId, this.replicationGroup, initialState);      case 'RGA':        return new RGA(this.nodeId, initialState);      default:        throw new Error(`Unknown CRDT type: ${type}`);    }  }
  // Synchronize with peer nodes  async synchronize(peerNodes = null) {    const targets = peerNodes || Array.from(this.replicationGroup);        for (const peer of targets) {      if (peer !== this.nodeId) {        await this.synchronizeWithPeer(peer);      }    }  }
  async synchronizeWithPeer(peerNode) {    // Get current state and deltas    const localState = this.getCurrentState();    const deltas = this.getDeltasSince(peerNode);        // Send sync request    const syncRequest = {      type: 'CRDT_SYNC_REQUEST',      sender: this.nodeId,      vectorClock: this.vectorClock.clone(),      state: localState,      deltas: deltas    };        try {      const response = await this.sendSyncRequest(peerNode, syncRequest);      await this.processSyncResponse(response);    } catch (error) {      console.error(`Sync failed with ${peerNode}:`, error);    }  }}

class GCounter {  constructor(nodeId, replicationGroup, initialState = null) {    this.nodeId = nodeId;    this.replicationGroup = replicationGroup;    this.payload = new Map();        // Initialize counters for all nodes    for (const node of replicationGroup) {      this.payload.set(node, 0);    }        if (initialState) {      this.merge(initialState);    }        this.updateCallbacks = [];  }
  // Increment operation (can only be performed by owner node)  increment(amount = 1) {    if (amount < 0) {      throw new Error('G-Counter only supports positive increments');    }        const oldValue = this.payload.get(this.nodeId) || 0;    const newValue = oldValue + amount;    this.payload.set(this.nodeId, newValue);        // Notify observers    this.notifyUpdate({      type: 'INCREMENT',      node: this.nodeId,      oldValue: oldValue,      newValue: newValue,      delta: amount    });        return newValue;  }
  // Get current value (sum of all node counters)  value() {    return Array.from(this.payload.values()).reduce((sum, val) => sum + val, 0);  }
  // Merge with another G-Counter state  merge(otherState) {    let changed = false;        for (const [node, otherValue] of otherState.payload) {      const currentValue = this.payload.get(node) || 0;      if (otherValue > currentValue) {        this.payload.set(node, otherValue);        changed = true;      }    }        if (changed) {      this.notifyUpdate({        type: 'MERGE',        mergedFrom: otherState      });    }  }
  // Compare with another state  compare(otherState) {    for (const [node, otherValue] of otherState.payload) {      const currentValue = this.payload.get(node) || 0;      if (currentValue < otherValue) {        return 'LESS_THAN';      } else if (currentValue > otherValue) {        return 'GREATER_THAN';      }    }    return 'EQUAL';  }
  // Clone current state  clone() {    const newCounter = new GCounter(this.nodeId, this.replicationGroup);    newCounter.payload = new Map(this.payload);    return newCounter;  }
  onUpdate(callback) {    this.updateCallbacks.push(callback);  }
  notifyUpdate(delta) {    this.updateCallbacks.forEach(callback => callback(delta));  }}

class ORSet {  constructor(nodeId, initialState = null) {    this.nodeId = nodeId;    this.elements = new Map(); // element -> Set of unique tags    this.tombstones = new Set(); // removed element tags    this.tagCounter = 0;        if (initialState) {      this.merge(initialState);    }        this.updateCallbacks = [];  }
  // Add element to set  add(element) {    const tag = this.generateUniqueTag();        if (!this.elements.has(element)) {      this.elements.set(element, new Set());    }        this.elements.get(element).add(tag);        this.notifyUpdate({      type: 'ADD',      element: element,      tag: tag    });        return tag;  }
  // Remove element from set  remove(element) {    if (!this.elements.has(element)) {      return false; // Element not present    }        const tags = this.elements.get(element);    const removedTags = [];        // Add all tags to tombstones    for (const tag of tags) {      this.tombstones.add(tag);      removedTags.push(tag);    }        this.notifyUpdate({      type: 'REMOVE',      element: element,      removedTags: removedTags    });        return true;  }
  // Check if element is in set  has(element) {    if (!this.elements.has(element)) {      return false;    }        const tags = this.elements.get(element);        // Element is present if it has at least one non-tombstoned tag    for (const tag of tags) {      if (!this.tombstones.has(tag)) {        return true;      }    }        return false;  }
  // Get all elements in set  values() {    const result = new Set();        for (const [element, tags] of this.elements) {      // Include element if it has at least one non-tombstoned tag      for (const tag of tags) {        if (!this.tombstones.has(tag)) {          result.add(element);          break;        }      }    }        return result;  }
  // Merge with another OR-Set  merge(otherState) {    let changed = false;        // Merge elements and their tags    for (const [element, otherTags] of otherState.elements) {      if (!this.elements.has(element)) {        this.elements.set(element, new Set());      }            const currentTags = this.elements.get(element);            for (const tag of otherTags) {        if (!currentTags.has(tag)) {          currentTags.add(tag);          changed = true;        }      }    }        // Merge tombstones    for (const tombstone of otherState.tombstones) {      if (!this.tombstones.has(tombstone)) {        this.tombstones.add(tombstone);        changed = true;      }    }        if (changed) {      this.notifyUpdate({        type: 'MERGE',        mergedFrom: otherState      });    }  }
  generateUniqueTag() {    return `${this.nodeId}-${Date.now()}-${++this.tagCounter}`;  }
  onUpdate(callback) {    this.updateCallbacks.push(callback);  }
  notifyUpdate(delta) {    this.updateCallbacks.forEach(callback => callback(delta));  }}

class LWWRegister {  constructor(nodeId, initialValue = null) {    this.nodeId = nodeId;    this.value = initialValue;    this.timestamp = initialValue ? Date.now() : 0;    this.vectorClock = new VectorClock(nodeId);    this.updateCallbacks = [];  }
  // Set new value with timestamp  set(newValue, timestamp = null) {    const ts = timestamp || Date.now();        if (ts > this.timestamp ||         (ts === this.timestamp && this.nodeId > this.getLastWriter())) {      const oldValue = this.value;      this.value = newValue;      this.timestamp = ts;      this.vectorClock.increment();            this.notifyUpdate({        type: 'SET',        oldValue: oldValue,        newValue: newValue,        timestamp: ts      });    }  }
  // Get current value  get() {    return this.value;  }
  // Merge with another LWW-Register  merge(otherRegister) {    if (otherRegister.timestamp > this.timestamp ||        (otherRegister.timestamp === this.timestamp &&          otherRegister.nodeId > this.nodeId)) {            const oldValue = this.value;      this.value = otherRegister.value;      this.timestamp = otherRegister.timestamp;            this.notifyUpdate({        type: 'MERGE',        oldValue: oldValue,        newValue: this.value,        mergedFrom: otherRegister      });    }        // Merge vector clocks    this.vectorClock.merge(otherRegister.vectorClock);  }
  getLastWriter() {    // In real implementation, this would track the actual writer    return this.nodeId;  }
  onUpdate(callback) {    this.updateCallbacks.push(callback);  }
  notifyUpdate(delta) {    this.updateCallbacks.forEach(callback => callback(delta));  }}

class RGA {  constructor(nodeId, initialSequence = []) {    this.nodeId = nodeId;    this.sequence = [];    this.tombstones = new Set();    this.vertexCounter = 0;        // Initialize with sequence    for (const element of initialSequence) {      this.insert(this.sequence.length, element);    }        this.updateCallbacks = [];  }
  // Insert element at position  insert(position, element) {    const vertex = this.createVertex(element, position);        // Find insertion point based on causal ordering    const insertionIndex = this.findInsertionIndex(vertex, position);        this.sequence.splice(insertionIndex, 0, vertex);        this.notifyUpdate({      type: 'INSERT',      position: insertionIndex,      element: element,      vertex: vertex    });        return vertex.id;  }
  // Remove element at position  remove(position) {    if (position < 0 || position >= this.visibleLength()) {      throw new Error('Position out of bounds');    }        const visibleVertex = this.getVisibleVertex(position);    if (visibleVertex) {      this.tombstones.add(visibleVertex.id);            this.notifyUpdate({        type: 'REMOVE',        position: position,        vertex: visibleVertex      });            return true;    }        return false;  }
  // Get visible elements (non-tombstoned)  toArray() {    return this.sequence      .filter(vertex => !this.tombstones.has(vertex.id))      .map(vertex => vertex.element);  }
  // Get visible length  visibleLength() {    return this.sequence.filter(vertex => !this.tombstones.has(vertex.id)).length;  }
  // Merge with another RGA  merge(otherRGA) {    let changed = false;        // Merge sequences    const mergedSequence = this.mergeSequences(this.sequence, otherRGA.sequence);    if (mergedSequence.length !== this.sequence.length) {      this.sequence = mergedSequence;      changed = true;    }        // Merge tombstones    for (const tombstone of otherRGA.tombstones) {      if (!this.tombstones.has(tombstone)) {        this.tombstones.add(tombstone);        changed = true;      }    }        if (changed) {      this.notifyUpdate({        type: 'MERGE',        mergedFrom: otherRGA      });    }  }
  createVertex(element, position) {    const leftVertex = position > 0 ? this.getVisibleVertex(position - 1) : null;        return {      id: `${this.nodeId}-${++this.vertexCounter}`,      element: element,      leftOrigin: leftVertex ? leftVertex.id : null,      timestamp: Date.now(),      nodeId: this.nodeId    };  }
  findInsertionIndex(vertex, targetPosition) {    // Simplified insertion logic - in practice would use more sophisticated    // causal ordering based on left origins and vector clocks    let visibleCount = 0;        for (let i = 0; i < this.sequence.length; i++) {      if (!this.tombstones.has(this.sequence[i].id)) {        if (visibleCount === targetPosition) {          return i;        }        visibleCount++;      }    }        return this.sequence.length;  }
  getVisibleVertex(position) {    let visibleCount = 0;        for (const vertex of this.sequence) {      if (!this.tombstones.has(vertex.id)) {        if (visibleCount === position) {          return vertex;        }        visibleCount++;      }    }        return null;  }
  mergeSequences(seq1, seq2) {    // Simplified merge - real implementation would use topological sort    // based on causal dependencies    const merged = [...seq1];        for (const vertex of seq2) {      if (!merged.find(v => v.id === vertex.id)) {        merged.push(vertex);      }    }        // Sort by timestamp for basic ordering    return merged.sort((a, b) => a.timestamp - b.timestamp);  }
  onUpdate(callback) {    this.updateCallbacks.push(callback);  }
  notifyUpdate(delta) {    this.updateCallbacks.forEach(callback => callback(delta));  }}

class DeltaStateCRDT {  constructor(baseCRDT) {    this.baseCRDT = baseCRDT;    this.deltaBuffer = [];    this.lastSyncVector = new Map();    this.maxDeltaBuffer = 1000;  }
  // Apply operation and track delta  applyOperation(operation) {    const oldState = this.baseCRDT.clone();    const result = this.baseCRDT.applyOperation(operation);    const newState = this.baseCRDT.clone();        // Compute delta    const delta = this.computeDelta(oldState, newState);    this.addDelta(delta);        return result;  }
  // Add delta to buffer  addDelta(delta) {    this.deltaBuffer.push({      delta: delta,      timestamp: Date.now(),      vectorClock: this.baseCRDT.vectorClock.clone()    });        // Maintain buffer size    if (this.deltaBuffer.length > this.maxDeltaBuffer) {      this.deltaBuffer.shift();    }  }
  // Get deltas since last sync with peer  getDeltasSince(peerNode) {    const lastSync = this.lastSyncVector.get(peerNode) || new VectorClock();        return this.deltaBuffer.filter(deltaEntry =>       deltaEntry.vectorClock.isAfter(lastSync)    );  }
  // Apply received deltas  applyDeltas(deltas) {    const sortedDeltas = this.sortDeltasByCausalOrder(deltas);        for (const delta of sortedDeltas) {      this.baseCRDT.merge(delta.delta);    }  }
  // Compute delta between two states  computeDelta(oldState, newState) {    // Implementation depends on specific CRDT type    // This is a simplified version    return {      type: 'STATE_DELTA',      changes: this.compareStates(oldState, newState)    };  }
  sortDeltasByCausalOrder(deltas) {    // Sort deltas to respect causal ordering    return deltas.sort((a, b) => {      if (a.vectorClock.isBefore(b.vectorClock)) return -1;      if (b.vectorClock.isBefore(a.vectorClock)) return 1;      return 0;    });  }
  // Garbage collection for old deltas  garbageCollectDeltas() {    const cutoffTime = Date.now() - (24 * 60 * 60 * 1000); // 24 hours        this.deltaBuffer = this.deltaBuffer.filter(      deltaEntry => deltaEntry.timestamp > cutoffTime    );  }}

// Store CRDT state persistentlyawait this.mcpTools.memory_usage({  action: 'store',  key: `crdt_state_${this.crdtName}`,  value: JSON.stringify({    type: this.crdtType,    state: this.serializeState(),    vectorClock: Array.from(this.vectorClock.entries()),    lastSync: Array.from(this.lastSyncVector.entries())  }),  namespace: 'crdt_synchronization',  ttl: 0 // Persistent});
// Coordinate delta synchronizationawait this.mcpTools.memory_usage({  action: 'store',  key: `deltas_${this.nodeId}_${Date.now()}`,  value: JSON.stringify(this.getDeltasSince(null)),  namespace: 'crdt_deltas',  ttl: 86400000 // 24 hours});

// Track CRDT synchronization metricsawait this.mcpTools.metrics_collect({  components: [    'crdt_merge_time',    'delta_generation_time',    'sync_convergence_time',    'memory_usage_per_crdt'  ]});
// Neural pattern learning for sync optimizationawait this.mcpTools.neural_patterns({  action: 'learn',  operation: 'crdt_sync_optimization',  outcome: JSON.stringify({    syncPattern: this.lastSyncPattern,    convergenceTime: this.lastConvergenceTime,    networkTopology: this.networkState  })});

class CausalTracker {  constructor(nodeId) {    this.nodeId = nodeId;    this.vectorClock = new VectorClock(nodeId);    this.causalBuffer = new Map();    this.deliveredEvents = new Set();  }
  // Track causal dependencies  trackEvent(event) {    event.vectorClock = this.vectorClock.clone();    this.vectorClock.increment();        // Check if event can be delivered    if (this.canDeliver(event)) {      this.deliverEvent(event);      this.checkBufferedEvents();    } else {      this.bufferEvent(event);    }  }
  canDeliver(event) {    // Event can be delivered if all its causal dependencies are satisfied    for (const [nodeId, clock] of event.vectorClock.entries()) {      if (nodeId === event.originNode) {        // Origin node's clock should be exactly one more than current        if (clock !== this.vectorClock.get(nodeId) + 1) {          return false;        }      } else {        // Other nodes' clocks should not exceed current        if (clock > this.vectorClock.get(nodeId)) {          return false;        }      }    }    return true;  }
  deliverEvent(event) {    if (!this.deliveredEvents.has(event.id)) {      // Update vector clock      this.vectorClock.merge(event.vectorClock);            // Mark as delivered      this.deliveredEvents.add(event.id);            // Apply event to CRDT      this.applyCRDTOperation(event);    }  }
  bufferEvent(event) {    if (!this.causalBuffer.has(event.id)) {      this.causalBuffer.set(event.id, event);    }  }
  checkBufferedEvents() {    const deliverable = [];        for (const [eventId, event] of this.causalBuffer) {      if (this.canDeliver(event)) {        deliverable.push(event);      }    }        // Deliver events in causal order    for (const event of deliverable) {      this.causalBuffer.delete(event.id);      this.deliverEvent(event);    }  }}

class CRDTComposer {  constructor() {    this.compositeTypes = new Map();    this.transformations = new Map();  }
  // Define composite CRDT structure  defineComposite(name, schema) {    this.compositeTypes.set(name, {      schema: schema,      factory: (nodeId, replicationGroup) =>         this.createComposite(schema, nodeId, replicationGroup)    });  }
  createComposite(schema, nodeId, replicationGroup) {    const composite = new CompositeCRDT(nodeId, replicationGroup);        for (const [fieldName, fieldSpec] of Object.entries(schema)) {      const fieldCRDT = this.createFieldCRDT(fieldSpec, nodeId, replicationGroup);      composite.addField(fieldName, fieldCRDT);    }        return composite;  }
  createFieldCRDT(fieldSpec, nodeId, replicationGroup) {    switch (fieldSpec.type) {      case 'counter':        return fieldSpec.decrements ?           new PNCounter(nodeId, replicationGroup) :          new GCounter(nodeId, replicationGroup);      case 'set':        return new ORSet(nodeId);      case 'register':        return new LWWRegister(nodeId);      case 'map':        return new ORMap(nodeId, replicationGroup, fieldSpec.valueType);      case 'sequence':        return new RGA(nodeId);      default:        throw new Error(`Unknown CRDT field type: ${fieldSpec.type}`);    }  }}
class CompositeCRDT {  constructor(nodeId, replicationGroup) {    this.nodeId = nodeId;    this.replicationGroup = replicationGroup;    this.fields = new Map();    this.updateCallbacks = [];  }
  addField(name, crdt) {    this.fields.set(name, crdt);        // Subscribe to field updates    crdt.onUpdate((delta) => {      this.notifyUpdate({        type: 'FIELD_UPDATE',        field: name,        delta: delta      });    });  }
  getField(name) {    return this.fields.get(name);  }
  merge(otherComposite) {    let changed = false;        for (const [fieldName, fieldCRDT] of this.fields) {      const otherField = otherComposite.fields.get(fieldName);      if (otherField) {        const oldState = fieldCRDT.clone();        fieldCRDT.merge(otherField);                if (!this.statesEqual(oldState, fieldCRDT)) {          changed = true;        }      }    }        if (changed) {      this.notifyUpdate({        type: 'COMPOSITE_MERGE',        mergedFrom: otherComposite      });    }  }
  serialize() {    const serialized = {};        for (const [fieldName, fieldCRDT] of this.fields) {      serialized[fieldName] = fieldCRDT.serialize();    }        return serialized;  }
  onUpdate(callback) {    this.updateCallbacks.push(callback);  }
  notifyUpdate(delta) {    this.updateCallbacks.forEach(callback => callback(delta));  }}

class CRDTConsensusIntegrator {  constructor(consensusProtocol, crdtSynchronizer) {    this.consensus = consensusProtocol;    this.crdt = crdtSynchronizer;    this.hybridOperations = new Map();  }
  // Hybrid operation: consensus for ordering, CRDT for state  async hybridUpdate(operation) {    // Step 1: Achieve consensus on operation ordering    const consensusResult = await this.consensus.propose({      type: 'CRDT_OPERATION',      operation: operation,      timestamp: Date.now()    });        if (consensusResult.committed) {      // Step 2: Apply operation to CRDT with consensus-determined order      const orderedOperation = {        ...operation,        consensusIndex: consensusResult.index,        globalTimestamp: consensusResult.timestamp      };            await this.crdt.applyOrderedOperation(orderedOperation);            return {        success: true,        consensusIndex: consensusResult.index,        crdtState: this.crdt.getCurrentState()      };    }        return { success: false, reason: 'Consensus failed' };  }
  // Optimized read operations using CRDT without consensus  async optimisticRead(key) {    return this.crdt.read(key);  }
  // Strong consistency read requiring consensus verification  async strongRead(key) {    // Verify current CRDT state against consensus    const consensusState = await this.consensus.getCommittedState();    const crdtState = this.crdt.getCurrentState();        if (this.statesConsistent(consensusState, crdtState)) {      return this.crdt.read(key);    } else {      // Reconcile states before read      await this.reconcileStates(consensusState, crdtState);      return this.crdt.read(key);    }  }}