- AWS X-Ray SDK Core (aws-xray-sdk-core)
- Fastify 3.0.0 or greater
The AWS X-Ray Fastify package automatically records information for incoming and outgoing requests and responses, via the 'enable' function in this package. To configure sampling, dynamic naming, and more see the set up section.
The AWS X-Ray SDK Core has two modes - manual and automatic.
Automatic mode uses the cls-hooked package and automatically
tracks the current segment and subsegment. This is the default mode.
Manual mode requires that you pass around the segment reference.
In automatic mode, you can get the current segment or subsegment at any time:
const segment = AWSXRay.getSegment();In manual mode, you can get the base segment off of the request object:
const segment = request.segment;This plugin should be register as soon as possible after Fastify initialisation.
For more automatic mode examples, see the example code.
const fastify = require("fastify")();
fastify.register(require("fastify-xray"), {
defaultName: "My App Name",
});
// Error capturing is attached to the fastify onError hookFor more manual mode examples, see manual mode examples. The X-Ray SDK can be used identically inside Restify routes. Note that you don't have to manually start or close the segments since that is handled by the X-Ray middleware.
const fastify = require("fastify")();
fastify.register(require("fastify-xray"), {
defaultName: "My App Name",
});
//...
fastify.get("/", async function (request, reply) {
const segment = request.segment;
//...
return "hello";
});
// Error capturing is attached to the fastify onError hookIn case you need to use your own, already configured, AWSRay instance, here is two possibilities.
By passing the AWSXRay instance as plugin option:
const AWSXRay = require('aws-xray-sdk-core')
const fastify = require("fastify")();
// ... configure your AWSXRay instance
fastify.register(require("fastify-xray"), {
defaultName: "My App Name",
AWSXRay
});By decorating the Fastify instance with the AWSXRay instance:
const AWSXRay = require('aws-xray-sdk-core')
const fastify = require("fastify")();
// ... configure your AWSXRay instance
fastify.decorate('AWSXRay', AWSXRay)
fastify.register(require("fastify-xray"), {
defaultName: "My App Name",
});
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