v0.10.0-beta3

New rootCallOptions options

There a new rootCallOptions property in the service settings. Here you can define the root Context calling options. It can be a static Object or a Function. It can be useful to take some data from the req and put them to the calling options (like tracing informations)

Example with static object

const ApiGateway = require("moleculer-web");

module.exports = {
    mixins: [ApiGateway],
    settings: {
        routes: [/*...*/],

        rootCallOptions: {
            timeout: 500
        }
    }
};

Example with Function which takes tracing information from the req and put them to the calling options

const ApiGateway = require("moleculer-web");

module.exports = {
    mixins: [ApiGateway],
    settings: {
        routes: [/*...*/],

        rootCallOptions(options, req, res) {
            if (req.headers["traceparent"]) {
                // More info https://www.w3.org/TR/trace-context/#traceparent-header
                const traceparent = req.headers["traceparent"].toLowerCase();
                if (traceparent.match(/^([0-9a-f]{2})-([0-9a-f]{32})-([0-9a-f]{16})-([0-9a-f]{2})$/)) {
                    const [version, id, parentSpan, flags] = traceparent.split("-");
                    const sampled = (flags & FLAG_SAMPLED) == FLAG_SAMPLED;

                    options.parentSpan = {
                        id: parentSpan,
                        traceID: id,
                        sampled
                    };
                }
            } else {
                // Look for X-B3-Traceid, X-B3-Spanid
                options.parentSpan = {};

                if (req.headers["x-b3-traceid"]) {
                    options.parentSpan.traceID = req.headers["x-b3-traceid"].toLowerCase();
                    options.parentSpan.sampled = true;
                }
                if (req.headers["x-b3-spanid"]) {
                    options.parentSpan.id = req.headers["x-b3-spanid"].toLowerCase();
                }
            }
        }
    }
};

Multiple route aliases

You can define multiple REST aliases in the action definitions.

module.exports = {
    name: "posts",

    settings: {
        rest: ["/posts", "/v1/posts"]
    },

    actions: {
        find: {
            rest: ["GET /", "GET /all"]
            handler(ctx) {}
        }
    }
};