How to access Express request object from within app.view method

[Evilweed]

Description

I've added middleware to Express server that creates Tracing span and then pushes it into request object that is being passed between express middleware and in normal express server is also available later.

With bolt.js i only have access to ack, payload, body, view, client, context for example in app.view method.

How can i access "request" object from within app.view?
Or how can i pass some data from express server middleware to bolt.js app.view?

What type of issue is this? (place an x in one of the [ ])

• bug
• enhancement (feature request)
• question
• documentation related
• example code related
• testing related
• discussion

Requirements (place an x in each of the [ ])

• I've read and understood the Contributing guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've searched for any related issues and avoided creating a duplicate issue.

---

export const distributedTracingMiddleware = function addDistributedTracing(
	req,
	res,
	next
) {
	// Creating our trace span using trace span context from incoming request
	const tracingContextFromRequest = tracer.extract('http_headers', req.headers)
	const span = tracer.startSpan(req.path, {
		childOf: tracingContextFromRequest,
	})

	// 👋 Adding trace span to the request object for any other Express.js handler to use the span
	Object.assign(req, { span })

	})

			this.app = new App({
				signingSecret: Secrets.slackSigningSecret,
				token: Secrets.slackToken,
				logLevel: LogLevel.DEBUG,
				endpoints: '/',
				receiver: this.expressReceiver,
			})

// 👋 Adding middleware to express server
this.expressReceiver.app.all('*', distributedTracingMiddleware)

	app.view<ViewSubmitActionExtended>(
		ACTIONS.BUG_REPORT_CREATE_TICKET,
		async ({ ack, payload, body, view, client, context }) => {
                        // 👋 Here i would like to access Express.js "request" object or somehow pass some data from express middleware
                       console.log(request.span)
        }))

[seratch]

Hi @Evilweed, thanks for writing in!

We got a similar question #1109 on the same day. Please refer to my comment in the issue: #1109 (comment)

As mentioned in the comment, unfortunately, there is no way to access HTTP request data at this moment but we are planning to add a custom properties to context object in future versions.

[srajiang]

Hi @Evilweed - Was the above helpful? If so feel free to close this issue and follow along on the main thread on #1109. I will revisit in a few days and close this up if we don't hear back from you.

[Evilweed]

@seratch @srajiang shouldn't we close this issue only if you actually implement the feature in PR, merge it and release a change that allows us to access the extra data in context passed from request middleware? This feature does not exist yet.

[srajiang]

Hi @Evilweed - Yep you're right about that - this issue can remain open while the feature is not implemented / on the roadmap. Apologies, I'm new on the team and to our triage workflows!