refactor(builder): large refactor of bundle sender state machine and metrics

[dancoombs]

Proposed Changes

• Refactor state machine
• Refactor metrics by saving an object with common components

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 310 lines in your changes missing coverage. Please review.

Project coverage is 54.37%. Comparing base (a908eef) to head (3bb74c4).

Additional details and impacted files

[](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | [Files](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | Coverage Δ | | |---|---|---| | [crates/builder/src/server/local.rs](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721?src=pr&el=tree&filepath=crates%2Fbuilder%2Fsrc%2Fserver%2Flocal.rs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform#diff-Y3JhdGVzL2J1aWxkZXIvc3JjL3NlcnZlci9sb2NhbC5ycw==) | `0.00% <ø> (ø)` | | | [crates/builder/src/bundle\_sender.rs](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721?src=pr&el=tree&filepath=crates%2Fbuilder%2Fsrc%2Fbundle_sender.rs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform#diff-Y3JhdGVzL2J1aWxkZXIvc3JjL2J1bmRsZV9zZW5kZXIucnM=) | `0.00% <0.00%> (ø)` | | | [Flag](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | Coverage Δ | | |---|---|---| | [unit-tests](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `54.37% <0.00%> (-0.11%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform#carryforward-flags-in-the-pull-request-comment) to find out more. | [Components](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/components?src=pr&el=components&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | Coverage Δ | | |---|---|---| | [rundler binary](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `0.00% <ø> (ø)` | | | [builder](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `45.75% <0.00%> (-0.48%)` | :arrow_down: | | [dev](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `0.00% <ø> (ø)` | | | [pool](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `64.37% <ø> (ø)` | | | [provider](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `16.68% <ø> (ø)` | | | [rpc](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `25.67% <ø> (ø)` | | | [sim](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `77.86% <ø> (ø)` | | | [tasks](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `∅ <ø> (∅)` | | | [types](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `65.45% <ø> (ø)` | | | [utils](https://app.codecov.io/gh/alchemyplatform/rundler/pull/721/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `18.28% <ø> (ø)` | |