Epic: Protocol 22 Changes

[Shaptic]

Protocol 22: Constructors

This epic defines all Horizon and SDK work that pertains to Protocol 22.

References:

• Core Timeline
• CAP-58: Soroban Constructors
• High-performance HTTP server: High performance getledgerentry stellar-core#4350
• All Platform Protocol 22 issues: projects#37/32

Note: All work should target a feature branch: RPC is v22-breaking-changes and the Go monorepo is protocol-22.

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Phase 1: Support

This phase involves adding support for all of the plumbing we'll need for the actual feature work:

• Generate new protocol definitions:
  • Update Horizon to use new XDR: Update XDR definitions for protocol 22  #5423
  • Update RPC to use new XDR: Doable once the above is released.
  • Update XDR and abstractions for Protocol 22 js-stellar-base#768
• Update preflight to support both Protocol 21 & 22 hosts / XDR: Support two sorobans for preflight soroban-rpc#264
• clients/stellarcore: Add support for Core's new HTTP endpoints #5426

Phase 2: Integration

This phase involves incorporating Core's changes across the stack as well as our own breaking changes:

• Handle the new host function: Update Horizon ingestion and tests to support the new host function #5437
• Refactoring RPC endpoints:
  • Replace getLedgerEntries() with a proxy to Core's /getledgerentry. soroban-rpc#269
  • Remove the deprecated getLedgerEntry endpoint soroban-rpc#258
  • clients/stellarcore: Add support for Core's getledgerentryraw endpoint #5455
• Remove deprecated Horizon fields:
  • protocols/horizon: Remove deprecated API fields #5438