@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);
    }
}