v2.8.0-ccip1.4.0

High level changelog

• Token pools are no longer configured with specific on- or offRamps but rather chains through chain selectors.

  • Token pools validate callers through the router, which should now be passed in via the constructor
  • Many events around adding/removing/updating allowed ramps now have an updated event around adding/removing/updating chains.
  • Rate limits are set for inbound and outbound explicitly, this is not different from the previous method where onRamps and offRamps are set separately.
    • Rate limits apply per remote chain, not per lane. This means that having multiple lanes enabled doesn't increase risk like it used to.
  • Enabling a chain on a token pool will allow every on- and offRamp that is configured on the router for that remote chain.
    • This also means that token pool ramp permissions do not need to be updated on a lane upgrade

• OffRamp offchain config format changed:

  • Renamed the MaxGasPrice field to DestMaxGasPrice.
  • Removed obsolete SourceFinalityDepth and DestFinalityDepth fields.

  This change is not breaking: the config decoder still accepts old field names.

• CommitStore offchain config format changed:

  • Renamed the MaxGasPrice field to SourceMaxGasPrice.
  • Removed obsolete SourceFinalityDepth and DestFinalityDepth fields.

  This change is not breaking: the config decoder still accepts old field names.

• Minor changes to the Prometheus metrics emitted by plugins

  • ccip_unexpired_report_skipped, ccip_execution_observation_reports_count, ccip_execution_observation_build_duration, ccip_execution_build_single_batch, ccip_execution_reports_iteration_build_batch
    removed, because they didn't introduce any additional value compared to the existing OCR2 metrics.
  • Some metrics added to track details of the processing
    • ccip_unexpired_commit_roots number of unexpired Commit Roots processed by Exec during the OCR2 iteration
    • ccip_number_of_messages_processed number of messages processed by the Exec when building the OCR2 reports and observations
    • ccip_sequence_number_counter latest sequence number that was used for generating Commit Report

• New DynamicPriceGetter implementation of PriceGetter.

  • allows for dynamic price fetching from an aggregator contract as well as using static configuration of token prices.
  • current pipeline implementation is still supported.
  • only one of the two PriceGetter implementations can be used at a time (specified in the job spec).

New Contributors

• @winder made their first contribution in #372
• @tateexon made their first contribution in #474

Full Changelog: v2.7.1-ccip1.2.4-release...v2.8.0-ccip1.4.0