Feat: implement aggregator slave signer registration mode

[jpraynaud]

Content

This PR includes the implementation of a slave signer registration mode in the aggregator.

This pull request introduces several changes to the mithril-aggregator project, focusing on implementing a slave signer registration mode in the aggregator, updating dependencies, and refining the dependency injection system. The most important changes are summarized below:

New Features and Enhancements:

• Implemented a slave signer registration mode in the aggregator, allowing the aggregator to fetch the latest epoch settings and store signer registrations from a master aggregator endpoint. (CHANGELOG.md - [1] mithril-aggregator/src/commands/serve_command.rs - [2] [3] [4] mithril-aggregator/src/configuration.rs - [5] [6] [7] [8]

Dependency Updates:

• Added new dependencies http and httpmock. (mithril-aggregator/Cargo.toml - [1] [2]

Dependency Injection Improvements:

• Added new services and clients to the dependency injection builder to support the slave signer registration mode, including AggregatorClient, MithrilSignerRegistrationMaster, MithrilSignerRegistrationSlave, and others. (mithril-aggregator/src/dependency_injection/builder/enablers/misc.rs - [1] [2] [3] mithril-aggregator/src/dependency_injection/builder/mod.rs - [4] [5] [6] [7] [8] [9] [10] [11]

Configuration Changes:

• Added a new configuration parameter master_aggregator_endpoint to indicate whether the aggregator is running in master or slave mode. (mithril-aggregator/src/configuration.rs - [1] [2] [3]

Pre-submit checklist

• Branch
  • Tests are provided (if possible)
  • Crates versions are updated (if relevant)
  • CHANGELOG file is updated (if relevant)
  • Commit sequence broadly makes sense
  • Key commits have useful messages
• PR
  • No clippy warnings in the CI
  • Self-reviewed the diff
  • Useful pull request description
  • Reviewer requested

Issue(s)

Closes #2334
Closes #2335

[github-actions]

Test Results

    3 files  ± 0     56 suites  +1   10m 32s ⏱️ +3s
1 713 tests +30  1 713 ✅ +30  0 💤 ±0  0 ❌ ±0 
2 105 runs  +30  2 105 ✅ +30  0 💤 ±0  0 ❌ ±0 

Results for commit 4c90983. ± Comparison against base commit 468de2d.

This pull request removes 23 and adds 53 tests. Note that renamed tests count towards both.

mithril-aggregator ‑ http_server::routes::epoch_routes::tests::get_epoch_settings_message_retrieves_protocol_parameters_from_epoch_service
mithril-aggregator ‑ http_server::routes::epoch_routes::tests::get_epoch_settings_message_retrieves_signing_configuration_from_epoch_service
mithril-aggregator ‑ http_server::routes::epoch_routes::tests::get_epoch_settings_message_with_cardano_transactions_enabled
mithril-aggregator ‑ http_server::routes::epoch_routes::tests::get_epoch_settings_message_with_cardano_transactions_not_enabled
mithril-aggregator ‑ message_adapters::from_register_signature::tests::test_simple_message
mithril-aggregator ‑ message_adapters::from_register_signer::tests::test_simple_message
mithril-aggregator ‑ message_adapters::to_cardano_transactions_proof_message::tests::test_simple_message
mithril-aggregator ‑ runtime::state_machine::tests::critical_error
mithril-aggregator ‑ runtime::state_machine::tests::idle_check_certificate_chain_is_not_valid
mithril-aggregator ‑ runtime::state_machine::tests::idle_check_certificate_chain_is_valid
…

mithril-aggregator ‑ configuration::test::is_slave_aggregator_returns_false_when_in_master_mode
mithril-aggregator ‑ configuration::test::is_slave_aggregator_returns_true_when_in_slave_mode
mithril-aggregator ‑ message_adapters::from_epoch_settings::tests::try_adapt_epoch_settings_message_to_entity
mithril-aggregator ‑ message_adapters::from_register_signature::tests::try_adapt_single_signatures_message_to_entity
mithril-aggregator ‑ message_adapters::from_register_signer::tests::try_adapt_signer_registration_message_to_entity
mithril-aggregator ‑ message_adapters::to_cardano_transactions_proof_message::tests::try_adapt_cardano_transaction_proof_to_message
mithril-aggregator ‑ runtime::state_machine::tests::master::critical_error
mithril-aggregator ‑ runtime::state_machine::tests::master::idle_check_certificate_chain_is_not_valid
mithril-aggregator ‑ runtime::state_machine::tests::master::idle_check_certificate_chain_is_valid
mithril-aggregator ‑ runtime::state_machine::tests::master::ready_certificate_does_not_exist_for_time_point
…

♻️ This comment has been updated with latest results.

[Alenar]

LGTM

[dlachaume]

LGTM 👍

[sfauvel]

LGTM
Some remarks to improve readability