@graphql-mesh/neo4j/index.cjs.js

'use strict';

function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }

const neo4jGraphqlJs = require('neo4j-graphql-js');
const neo4j = _interopDefault(require('neo4j-driver'));
const load = require('@graphql-tools/load');
const graphqlFileLoader = require('@graphql-tools/graphql-file-loader');
const codeFileLoader = require('@graphql-tools/code-file-loader');
const merge = require('@graphql-tools/merge');

class Neo4JHandler {
    constructor({ name, cache, config, pubsub }) {
        this.name = name;
        this.cache = cache;
        this.config = config;
        this.pubsub = pubsub;
    }
    getDriver() {
        if (!this.driver) {
            this.driver = neo4j.driver(this.config.url, neo4j.auth.basic(this.config.username, this.config.password));
            this.pubsub.subscribe('destroy', () => this.driver.close());
        }
        return this.driver;
    }
    async getMeshSource() {
        let typeDefs;
        const cacheKey = this.name + '_introspection';
        if (this.config.typeDefs) {
            const typeDefsArr = await load.loadTypedefs(this.config.typeDefs, {
                loaders: [new codeFileLoader.CodeFileLoader(), new graphqlFileLoader.GraphQLFileLoader()],
                assumeValid: true,
                assumeValidSDL: true,
            });
            typeDefs = merge.mergeTypeDefs(typeDefsArr.map(source => source.document));
        }
        else {
            if (this.config.cacheIntrospection) {
                typeDefs = await this.cache.get(cacheKey);
            }
            if (!typeDefs) {
                const inferredSchema = await neo4jGraphqlJs.inferSchema(this.getDriver(), {
                    alwaysIncludeRelationships: this.config.alwaysIncludeRelationships,
                });
                typeDefs = inferredSchema.typeDefs;
                if (this.config.cacheIntrospection) {
                    await this.cache.set(cacheKey, typeDefs, {
                        ttl: typeof this.config.cacheIntrospection === 'object' && this.config.cacheIntrospection.ttl,
                    });
                }
            }
        }
        const schema = neo4jGraphqlJs.makeAugmentedSchema({ typeDefs, config: { experimental: true } });
        return {
            schema,
            contextBuilder: async () => ({ driver: this.getDriver(), neo4jDatabase: this.config.database }),
        };
    }
}

module.exports = Neo4JHandler;
//# sourceMappingURL=index.cjs.js.map