5-resolver.ts

    private creatGetOutputResolver(
        api: appsync.CfnGraphQLApi,
        schema: appsync.CfnGraphQLSchema,
        outputDataSource: appsync.CfnDataSource
    ) {
        const name = 'GetOutputResolver';
        const requestMappingTemplate = `{
            "version": "2017-02-28",
            "operation": "Invoke",
            "payload": {
                "Number": $utils.toJson($context.arguments.number),
                "Count": $utils.toJson($context.arguments.count)
            }
        }`;
        const responseMappingTemplate = `$utils.toJson($context.result)`;
        const getOutputResolver = new appsync.CfnResolver(this, name, {
            apiId: api.attrApiId,
            typeName: 'Query',
            fieldName: 'getOutput',
            dataSourceName: outputDataSource.name,
            requestMappingTemplate: requestMappingTemplate,
            responseMappingTemplate: responseMappingTemplate
        });

        getOutputResolver.addDependsOn(schema);
        getOutputResolver.addDependsOn(outputDataSource);
    }