@aws-cdk/core/lib/private/tree-metadata.js

AWS Cloud Development Kit Core Library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const fs = require("fs");
const path = require("path");
const cx_api_1 = require("@aws-cdk/cx-api");
const construct_1 = require("../construct");
const FILE_PATH = 'tree.json';
/**
 * Construct that is automatically attached to the top-level `App`.
 * This generates, as part of synthesis, a file containing the construct tree and the metadata for each node in the tree.
 * The output is in a tree format so as to preserve the construct hierarchy.
 *
 * @experimental
 */
class TreeMetadata extends construct_1.Construct {
    constructor(scope) {
        super(scope, 'Tree');
    }
    synthesize(session) {
        const lookup = {};
        const visit = (construct) => {
            const children = construct.node.children.map(visit);
            const node = {
                id: construct.node.id || 'App',
                path: construct.node.path,
                children: children.length === 0 ? undefined : children,
            };
            lookup[node.path] = node;
            return node;
        };
        const tree = {
            version: 'tree-0.1',
            tree: visit(this.node.root),
        };
        const builder = session.assembly;
        fs.writeFileSync(path.join(builder.outdir, FILE_PATH), JSON.stringify(tree, undefined, 2), { encoding: 'utf-8' });
        builder.addArtifact('Tree', {
            type: cx_api_1.ArtifactType.CDK_TREE,
            properties: {
                file: FILE_PATH
            }
        });
    }
}
exports.TreeMetadata = TreeMetadata;
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