Recognizing finish of catching up

[Thunnini]

Summary

I want to add metrics on cosmos-sdk. But without recognizing fast sync, metrics will be strange until finishing catching up.

Problem Definition

I want to add metrics on cosmos-sdk. But without recognizing fast sync, metrics will be strange until finishing catching up.

Proposal

When the fast sync is complete, tendermint informs completion via SetOption abci.

---

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned

[alexanderbez]

What exact metrics do you want to add @Thunnini? Also, take a look at #2169.

[rigelrozanski]

I think that @Thunnini is looking for a message to be sent to the application for customized metrics? - it sounds like this issue should be in https://github.com/tendermint/tendermint/issues though

[Thunnini]

As mentioned above, I want to create metrics for basic modules and my custom modules on cosmos-sdk. But until finishing catching up, I may have very strange metrics because I do not know whether it is fast sync now or not. I want skip tracking up metrics during fast sync... On second thought, however, I think it is related to Tendermint. I'm sorry.

[rigelrozanski]

yeah no sorries required! If you'd like to reopen this issue in tendermint that would be much appreciated :)

[jackzampolin]

I think there is currently a syncing={true|false} metric that should be monitored to see if the node is synching. This should give operators an idea of if the metrics can be trusted or not. Closing this issue.