add(metrics): Track mempool actions and size bucketed by weight (copy of #6972, credit @str4d)

[mpguerra]

Motivation

This is a copy of #6972 so that tests can be run

Specifications

Complex Code or Requirements

Solution

Review

Reviewer Checklist

• Will the PR name make sense to users?
  • Does it need extra CHANGELOG info? (new features, breaking changes, large changes)
• Are the PR labels correct?
• Does the code do what the ticket and PR says?
  • Does it change concurrent code, unsafe code, or consensus rules?
• How do you know it works? Does it have tests?

Follow Up Work

[teor2345]

@Mergifyio refresh

[mergify]

refresh

✅ Pull request refreshed

[teor2345]

This seems like a real bug, but I don't know if it is in the generated proptest data, or in the code.

Multiple tests fail on the same Rust code in this PR:

---- components::mempool::storage::tests::prop::reject_lists_are_limited_insert_eviction stdout ----
The application panicked (crashed).
Message: attempt to subtract with overflow
Location: zebrad/src/components/mempool/storage/verified_set.rs:312
312 > paid_actions += entry.conventional_actions - entry.unpaid_actions;

https://github.com/ZcashFoundation/zebra/actions/runs/5321638950/jobs/9636992835?pr=7019#step:10:3627

[teor2345]

Panic on "attempt to subtract with overflow"

[teor2345]

@oxarbitrage CI won't run on this branch until you fix the merge conflicts

[teor2345]

Thanks for this!

It looks like all the tests are passing, but we're not quite testing the correct ranges.

Also we could make this implementation simpler and easier to use by replacing the derived Arbitrary implementation with a manual one. Did you want me to show you how to do that?

[teor2345]

CI hit a GitHub HTTP request rate-limit:

/usr/bin/git -c protocol.version=2 fetch --no-tags --prune --progress --no-recurse-submodules --depth=2 origin +1782753784d560a037dd6786bfae6780ba3693a6:refs/remotes/pull/7019/merge
Error: fatal: unable to access 'https://github.com/ZcashFoundation/zebra/': The requested URL returned error: 429

https://github.com/ZcashFoundation/zebra/actions/runs/5590449347/jobs/10221580034?pr=7019#step:2:54

The solution to this is to stop checking out Zebra in jobs and steps that don't need it, or to combine jobs and steps so that we check out Zebra fewer times.

[teor2345]

Thanks for fixing this up!