Blend Controller

BlendController supports Supply and Withdraw against the configured Blend pool and registered reserve tokens. It authenticates AccountManager, resolves token tracking metadata, and calls Blend through SmartAccount-authorized callbacks. Supply uses Blend request type 0; withdraw uses type 1. Input amounts use WAD and are converted to reserve-native units. Receipt changes are derived from Blend positions and synchronized through authorized tracking-token operations and underlying caches. withdraw_all_to batches reserve exits and sends underlying to the supplied recipient. Liquidation uses this path to pay Blend collateral directly to the liquidator. It verifies that requested supply positions have fully exited and burns remaining tracking receipts. The contract exposes capability, execution, Registry, and admin-upgrade methods. The constructor argument order differs from ControllerFacade: verify the signatures below.

Function signatures

These signatures are copied from the reviewed Rust implementation. env is supplied by Soroban and is not a transaction argument. Result errors and panics must be handled by the caller; simulation does not guarantee later execution. Public methods include privileged and internal-contract callbacks, not just user entrypoints.

__constructor

pub fn __constructor(env: Env, registry: Address, admin: Address)

upgrade

pub fn upgrade(env: &Env, new_wasm_hash: BytesN<32>)

can_call

pub fn can_call(
        env: &Env,
        target: Address,
        action: ExternalAction,
        tokens: Vec<Address>,
    ) -> (bool, Vec<Address>, Vec<Address>)

execute

pub fn execute(
        env: &Env,
        account: Address,
        action: ExternalAction,
        tokens: Vec<Address>,
        amounts: Vec<u128>,
        _min_out: u128,
    ) -> TokenDeltas

withdraw_all_to

pub fn withdraw_all_to(
        env: &Env,
        account: Address,
        recipient: Address,
        target: Address,
        tokens: Vec<Address>,
    )

get_registry

pub fn get_registry(env: &Env) -> Address

Source reference

Protocol_V1_Soroban_testnet/contracts/BlendControllerContract/src/controller.rs

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Blend Controller

Function signatures

__constructor

upgrade

can_call

execute

withdraw_all_to

get_registry

Source reference

​Function signatures

​__constructor

​upgrade

​can_call

​execute

​withdraw_all_to

​get_registry

​Source reference

Function signatures

__constructor

upgrade

can_call

execute

withdraw_all_to

get_registry

Source reference