Program

Program Code Repository: https://github.com/castle-finance/castle-vault

Functions in the program are created by bundling one or more instructions into a transaction. This document will first explain what each instruction does on its own and then how they are bundled together into various user-facing functions in the SDK.

Instructions

Initialize

Creates a new vault

Deposit

Exchanges reserve tokens for vault LP tokens

Withdraw

Exchanges vault LP tokens for reserve tokens

Rebalance

Calculates and stores the desired allocations to integrated lending markets based on the vault strategy type

Also emits and anchor event containing the new allocations

Required before any reconcile IX is called

Refresh [Jet | Port | Solend]

Refreshes the reserves of the given lending reserve, which is required before any deposit or withdrawal

Calculates the value of the vault held in the given lending reserve, denominated in the reserve token

Consolidate Refresh

Calculates the total value of the vault, denominated in the reserve token. This is required before any deposit or withdrawal from the vault

Reconcile [Jet | Port | Solend]

Deposits and withdraws from the given lending market according to the allocations stored by the rebalance IX

Functions

Initialize

IXs

• Initialize

Deposit

IXs

• (if reserve token is SOL) Wrap SOL into SPL token

• (if doesn't exist already) Create account for LP token

• Refresh

• Deposit

• (if reserve token is SOL) Close intermediate account created during wrapping

Withdraw

IXs

• Refresh

• (if withdraw amount is less than in vault reserves) Reconcile

• (if doesn't exist already) Create account for reserve token

• Withdraw

• (if reserve token is SOL) Unwrap from SPL token to SOL

Rebalance

IXs

• Refresh

• Rebalance

• Reconcile IXs