@shubhamrasal/groundline/dist/lib/graph-crdt.js

Groundline GraphDB with IPFS persistence

import * as Y from 'yjs';
// import * as fs from 'fs';
// Create a new Y.Doc instance
export const graphDoc = new Y.Doc();
// 'nodes' and 'edges' are Y.Maps for storing entities and relations
export const nodes = graphDoc.getMap('nodes');
export const edges = graphDoc.getMap('edges');
// Optionally, export a function to initialize or reset the doc
export function initGraphDoc() {
    graphDoc.getMap('nodes').clear();
    graphDoc.getMap('edges').clear();
}
const provenanceLog = [];
// Enhanced logging function with metadata support
function logChange(entry, metadata = {}) {
    const defaultMeta = {
        schemaVersion: '1.0', // Current schema version
        source: 'api',
        validationStatus: 'valid'
    };
    provenanceLog.push({
        ...entry,
        timestamp: Date.now(),
        meta: {
            ...defaultMeta,
            ...metadata
        }
    });
}
// Add a node (Entity) to the nodes map with metadata support
export function addNode(entity, metadata) {
    if (!entity.id)
        throw new Error('Entity must have an id');
    nodes.set(entity.id, entity);
    logChange({
        action: 'add',
        objectType: 'node',
        id: entity.id,
        data: entity
    }, metadata);
}
// Edit a node (Entity) in the nodes map with metadata support
export function editNode(entity, metadata) {
    if (!entity.id)
        throw new Error('Entity must have an id');
    if (!nodes.has(entity.id))
        throw new Error('Node does not exist');
    nodes.set(entity.id, entity);
    logChange({
        action: 'edit',
        objectType: 'node',
        id: entity.id,
        data: entity
    }, metadata);
}
// Delete a node by id with metadata support
export function deleteNode(id, metadata) {
    nodes.delete(id);
    logChange({
        action: 'delete',
        objectType: 'node',
        id
    }, metadata);
}
// Add an edge (Relation) to the edges map with metadata support
export function addEdge(relation, metadata) {
    const edgeId = `${relation.from}->${relation.to}:${relation.relationType}`;
    edges.set(edgeId, relation);
    logChange({
        action: 'add',
        objectType: 'edge',
        id: edgeId,
        data: relation
    }, metadata);
}
// Edit an edge (Relation) in the edges map with metadata support
export function editEdge(relation, metadata) {
    const edgeId = `${relation.from}->${relation.to}:${relation.relationType}`;
    if (!edges.has(edgeId))
        throw new Error('Edge does not exist');
    edges.set(edgeId, relation);
    logChange({
        action: 'edit',
        objectType: 'edge',
        id: edgeId,
        data: relation
    }, metadata);
}
// Delete an edge by id (composite key) with metadata support
export function deleteEdge(edgeId, metadata) {
    edges.delete(edgeId);
    logChange({
        action: 'delete',
        objectType: 'edge',
        id: edgeId
    }, metadata);
}
// Export functions to get and clear the provenance log
export function getProvenanceLog() {
    return provenanceLog.slice();
}
export function clearProvenanceLog() {
    provenanceLog.length = 0;
}
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