prometheus metrics: network_chain_tip_height_estimator

[jleni]

Is there any way to access the "estimated chain tip height" as a prometheus metrics?

[teor2345]

We have it as a progress bar, but we haven't added it as a metric:

zebra/zebrad/src/components/sync/progress.rs

Lines 146 to 156 in 3be22b2

	// Send progress reports for block height
	//
	// TODO: split the progress bar height update into its own function.
	#[cfg(feature = "progress-bar")]
	if matches!(howudoin::cancelled(), Some(true)) {
	block_bar.close();
	} else {
	block_bar
	.set_pos(current_height.0)
	.set_len(u64::from(estimated_height.0));
	}

Is that something you'd like us to add, or is it code you're comfortable submitting a PR for?

Here's an example of what a metric looks like in Rust:

zebra/zebra-state/src/service/queued_blocks.rs

Line 374 in 3be22b2

metrics::gauge!("state.memory.sent.cache.min.height", min_height.0 as f64);

We could call it state.estimated.chain.tip.height?

[mpguerra]

closing this one as stale