@theguild/federation-composition/esm/supergraph/validation/rules/satisfiablity/supergraph.js

Open Source Composition library for Apollo Federation

import { Logger, LoggerContext } from '../../../../utils/logger.js';
import { MERGEDGRAPH_ID, SUPERGRAPH_ID } from './constants.js';
import { Graph } from './graph.js';
import { MoveValidator } from './move-validator.js';
import { SelectionResolver } from './selection.js';
import { Walker } from './walker.js';
export class Supergraph {
    supergraph;
    mergedGraph;
    selectionResolver;
    moveRequirementChecker;
    logger = new Logger('Supergraph', new LoggerContext());
    constructor(supergraphState) {
        this.selectionResolver = new SelectionResolver(supergraphState);
        this.supergraph = new Graph(this.logger, SUPERGRAPH_ID, 'supergraph', supergraphState, this.selectionResolver, true);
        this.mergedGraph = new Graph(this.logger, MERGEDGRAPH_ID, 'merged', supergraphState, this.selectionResolver);
        for (const [id, subgraphState] of supergraphState.subgraphs) {
            this.mergedGraph.addSubgraph(new Graph(this.logger, id, subgraphState.graph.name, supergraphState, this.selectionResolver, false)
                .addFromRoots()
                .addFromEntities()
                .addUnreachableTypes());
        }
        this.mergedGraph.joinSubgraphs();
        this.mergedGraph.addOverriddenFields();
        this.supergraph.addFromRoots().addOverriddenFields().addInterfaceObjectFields();
        this.moveRequirementChecker = new MoveValidator(this.logger, this.mergedGraph);
    }
    validate() {
        return new Walker(this.logger, this.moveRequirementChecker, this.supergraph, this.mergedGraph).walk('dfs');
    }
    validateOperation(operation, steps) {
        return new Walker(this.logger, this.moveRequirementChecker, this.supergraph, this.mergedGraph).walkTrail(operation, steps);
    }
}