Does Relay startup block if one Agent is not reachable? about ladder99

[bburns]

Good question, but no - this for-loop in the main file just starts each endpoint up and lets them go at their own pace - they run in parallel in js's event loop -

ladder99/services/relay/src/index.js

Lines 32 to 50 in 8877156

	for (let agent of agents) {
	//
	// remove any trailing slash from base urls
	if (agent.url.endsWith('/')) {
	agent.url = agent.url.slice(0, agent.url.length - 1)
	}
	// get endpoint object, which points to mtconnect agent
	const endpoint = new Endpoint(agent.url)
	console.log(`Agent endpoint:`, endpoint)
	// get agent reader, which will read and process data from endpoint
	const agentReader = new AgentReader({ params, db, endpoint, setup, agent })
	// run agent readers (read mtconnect agent xml, write SQL to database).
	// nodejs is single threaded with an event loop -
	// run in parallel so agent readers run independently of each other.
	agentReader.start()
	}