Dacade平台SUI Move挑战者合约实践——SUID简单流动性质押池（SUID -Staking Pool Module）

rzexin
更新于 2024-02-28 00:10
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Dacade平台SUI Move挑战者合约实践——SUID简单流动性质押池（SUID-Staking Pool Module）

# Dacade平台SUI Move挑战者合约实践——SUID简单流动性质押池（SUID - Staking Pool Module）

*rzexin 2024.02.26*

## 1 合约说明

### 1.1 功能介绍

- `SUID`模块是一个简单的流动性质押池，用户可以质押`SUI`并获得`SUID`代币
- 用户可以质押`SUI`到指定的验证器，或从从指定验证器解除质押

### 1.2 合约代码

#### 1.2.1 合约源码地址

https://github.com/vijay-kesanakurthi/suid/blob/main/sources/suid.move

#### 1.2.2 数据结构说明

##### （1）流动性质押池对象

成员变量包括：

- 质押的`SUI`代币
- 质押产生的`SUID`代币

```rust
    // Shared pool object
    struct Pool has key {
        id: UID,
        sui: Balance<SUI>,
        treasury: TreasuryCap<SUID>,
    }
```

#### 1.2.3 接口说明

##### （1）初始化方法（`init`）

- 通过**一次性见证（One Time Witness, OTW）**方式进行初始化，创建`SUID`国库
- 并以此创建流动性质押池共享对象`Pool`

```rust
    // custom coin SUID
    struct SUID has drop {}

#[allow(unused_function)]
    fun init(witness: SUID, ctx: &mut TxContext) {
        let (treasury, metadata) = coin::create_currency(
            witness,
            9,
            b"SUID",
            b"Dacade Staked SUI",
            b"SUID is a Decade Staked SUI",
            option::none(),
            ctx
        );

// Make metadata immutable
        transfer::public_freeze_object(metadata);

// Create the shared pool
        transfer::share_object(Pool {
            id: object::new(ctx),
            sui: balance::zero<SUI>(),
            treasury,  
        });
    }
```

##### （2）添加流动性（`add_liquidity_`）

- 添加SUI到流动性池中，将1:1得到`SUID`作为回报

```rust
    /*
        Entrypoint for the `add_liquidity` method. Sends `SUID` to
        the transaction sender.
        pool: The shared pool where user want to stake sui.
        sui : SUI user want to stake.

*/
    entry fun add_liquidity_(
        pool: &mut Pool, sui: Coin<SUI>, ctx: &mut TxContext
    ) {
        let liquidity=add_liquidity(pool, sui, ctx);
        transfer::public_transfer(liquidity, tx_context::sender(ctx)
        );
    }

/* 
        add liquidity to the `Pool` by transfer `SUID`.
        pool: The shared pool where user want to stake sui.
        sui : SUI user want to stake.
        Retrund SUID for given SUI.
    */
    public fun add_liquidity(
        pool: &mut Pool, sui: Coin<SUI>, ctx: &mut TxContext
    ): Coin<SUID> {
        is_valid_amount(coin::value(&sui));

let sui_balance = coin::into_balance(sui);
        let sui_added = balance::value(&sui_balance);
        // Increase the supply of SUID
        let balance = balance::increase_supply(coin::supply_mut(&mut pool.treasury), sui_added);
        balance::join(&mut pool.sui, sui_balance);
        coin::from_balance(balance, ctx)
    }

// Check if SUI AMount has required value
    fun is_valid_amount(amount:u64)  {
        assert!(amount>= FLOAT_SCALING,EAmountTooLow)
    }
```

##### （3）移除流动性（`remove_liquidity_`）

- 从池中移除流动性，将燃烧`SUID`代币，并返回质押的`SUI`

```rust
    /*
        Entrypoint for the `remove_liquidity` method. Transfers
        withdrawn assets (SUI) to the sender.
        pool: The shared pool where user want to unstake sui.
        suid : SUID user want to unstake.
    */
    entry fun remove_liquidity_(
        pool: &mut Pool,
        suid: Coin<SUID>,
        ctx: &mut TxContext
    ) {
        let (sui ) = remove_liquidity(pool, suid, ctx);
        let sender = tx_context::sender(ctx);
        transfer::public_transfer(sui, sender);
    }

/*
        Remove liquidity from the `Pool` by burning `SUID`.
        pool: The shared pool where user want to unstake sui
        suid : SUID user want to unstake
        Returns `Coin<SUI>`.
    */
    public fun remove_liquidity (
        pool: &mut Pool,
        suid: Coin<SUID>,
        ctx: &mut TxContext
    ): Coin<SUI> {
        is_valid_amount(coin::value(&suid));
        let suid_amount = coin::value(&suid);
        balance::decrease_supply(coin::supply_mut(&mut pool.treasury), coin::into_balance(suid));
        coin::take(&mut pool.sui, suid_amount, ctx)
    }
```

##### （4）质押SUI到指定的验证者（`stake`）

```rust
    /*
        stake the `SUI` with the given validator.
        sui : SUI user want to stake.
        state: The state of the SUI system.
        validator_address: The address of the validator to stake with.
       
    */

public fun stake( 
        sui: Coin<SUI>, 
        state: &mut SuiSystemState,
        validator_address: address,
        ctx: &mut TxContext

) {
        sui_system::request_add_stake(state, sui, validator_address, ctx);
    }
```

##### （5）从指定验证者解除质押（`unstake`）

```rust
    /*
        unstake the `SUI`.
        state: The state of the SUI system.
        staked_sui: The staked SUI object.
        ctx: The transaction context.
    */

public fun unstake(
        state: &mut SuiSystemState,
        staked_sui: StakedSui,
        ctx: &mut TxContext,
    ) {
        sui_system::request_withdraw_stake(
            state,  
            staked_sui, 
            ctx
        );
    } 
```

## 2 前置准备

### 2.1 帐号准备及角色分配

| 别名  | 地址                                                         | 角色  |
| ----- | ------------------------------------------------------------ | ----- |
| Jason | `0x5c5882d73a6e5b6ea1743fb028eff5e0d7cc8b7ae123d27856c5fe666d91569a` | 账号1 |
| Alice | `0x2d178b9704706393d2630fe6cf9415c2c50b181e9e3c7a977237bb2929f82d19` | 账号2 |
| Bob   | `0xf2e6ffef7d0543e258d4c47a53d6fa9872de4630cc186950accbd83415b009f0` | 账号3 |

- **将地址添加到环境变量**

```bash
export JASON=0x5c5882d73a6e5b6ea1743fb028eff5e0d7cc8b7ae123d27856c5fe666d91569a
export ALICE=0x2d178b9704706393d2630fe6cf9415c2c50b181e9e3c7a977237bb2929f82d19
export BOB=0xf2e6ffef7d0543e258d4c47a53d6fa9872de4630cc186950accbd83415b009f0
```

## 3 合约部署

> 切换到Jason账号

```bash
sui client publish --gas-budget 100000000
```

- **命令输出关键信息截图**

![image.png](https://img.learnblockchain.cn/attachments/2024/02/rytWrogz65de087c98db0.png)

- **将关键的对象ID记录到环境变量，方便后续调用使用**

```bash
export PACKAGE_ID=0xdbd3c92e445f176cf8cb2874791d816964615d20da4218530671b625c2978be1

# PACKAGE_ID::suid::Pool
export POOL=0x8913f6eba39d948c7ea2f8a481b4451bf89ab0618662c6323cb5b853bfaefd18
```

## 4 合约交互

### 4.1 添加流动性（`add_liquidity_`）

```bash
export COIN=0x8dea9b14702e1ce63b11d1a2a6f9bc6aaadb91d38cb20b5e0cfa0d93486f206a

sui client call --function add_liquidity_ --package $PACKAGE_ID --module suid --args $POOL $COIN --gas-budget 10000000
```

- **得到SUID对象**

```bash
#  0x2::coin::Coin<PACKAGE_ID::suid::SUID>
export SUID=0x15b755334120e2c1a1783bb3b9e616f7dd6a078d548da14e0adfa7299336b211
```

- **查看SUID对象**

```bash
sui client object $SUID
```

![image.png](https://img.learnblockchain.cn/attachments/2024/02/FaF2dcpf65de0890c23f1.png)

### 4.2 移除流动性（`remove_liquidity_`）

```bash
sui client call --function remove_liquidity_ --package $PACKAGE_ID --module suid --args $POOL $SUID --gas-budget 10000000
```

- **取回添加的SUI代币**

```bash
# 0x2::coin::Coin<0x2::sui::SUI> 
export COIN2=0xce4d7792ebc78d43e6fd3770be7bd3dfd45b16de2329d269a801c14d858da948
```

- **查看取回的SUI对象**

```bash
sui client object $COIN2
```

![image.png](https://img.learnblockchain.cn/attachments/2024/02/Mw6p2UKV65de08a8b3572.png)

### 4.3 质押SUI到指定的验证者（`stake`）

```bash
export COIN=0x11baf1209cf52ecdea1c283ffa3d96466bbddb99ef23742d81cd89dd12c30a8a # 1SUI
export VALIDATOR_ADDRESS=0x8ffaea5d47a38291e5dd390b6d4c40fd3b1f17864aec217a2f808d8f1ca9b26b # 测试网MoveFunsDAO验证者地址
sui client call --function stake --package $PACKAGE_ID --module suid --args $COIN 0x5 $VALIDATOR_ADDRESS --gas-budget 10000000
```

- **抛出事件**

![image.png](https://img.learnblockchain.cn/attachments/2024/02/DQQZ8X6E65de08b7ae2fd.png)

- **得到`StakedSui`对象**

```bash
export STAKED_SUI=0x53f99cc9a342f619ae79411e0fb622812aabf9f41581962862aa638608f5b2bf
```

![image.png](https://img.learnblockchain.cn/attachments/2024/02/tFiy5G7b65de08c6812b7.png)

- **查看`StakedSui`对象**

```bash
sui client object $STAKED_SUI
```

![image.png](https://img.learnblockchain.cn/attachments/2024/02/Mbt2Jn4365de08d787817.png)

- **通过钱包查看质押对象**

![image.png](https://img.learnblockchain.cn/attachments/2024/02/RRmxg4Oc65de08e699cff.png)

### 4.4 从指定验证者解除质押（`unstake`）

> 有些质押解除会报错，不知为何？：`const EStakeWithdrawBeforeActivation: u64 = 6;`，
>
> ```bash
> Error executing transaction: Failure {
>     error: "MoveAbort(MoveLocation { module: ModuleId { address: 0000000000000000000000000000000000000000000000000000000000000003, name: Identifier(\"sui_system_state_inner\") }, function: 13, instruction: 12, function_name: Some(\"request_withdraw_stake\") }, 6) in command 0",
> }
> ```

```bash
sui client call --function unstake --package $PACKAGE_ID --module suid --args 0x5 $STAKED_SUI --gas-budget 10000000
```

- **抛出事件**

![image.png](https://img.learnblockchain.cn/attachments/2024/02/4GsfLFBJ65de08f6495a0.png)

- **取回质押的SUI**

```bash
export UNSTAKED_SUI=0xdfb27566f85ecf3384c443f488053a1f3ad150c8d318c4d566889a054fc6352b
sui client object $UNSTAKED_SUI
```

![image.png](https://img.learnblockchain.cn/attachments/2024/02/yPlZ0vN165de0904d89c4.png)

## 5 更多

[🚀参与星航计划 开启你的 Sui Move 之旅！🚀](https://github.com/movefuns/SuiStartrek)

Dacade平台SUI Move挑战者合约实践——SUID简单流动性质押池（SUID - Staking Pool Module）

rzexin 2024.02.26

1 合约说明

1.1 功能介绍

SUID模块是一个简单的流动性质押池，用户可以质押SUI并获得SUID代币
用户可以质押SUI到指定的验证器，或从从指定验证器解除质押

1.2 合约代码

1.2.1 合约源码地址

https://github.com/vijay-kesanakurthi/suid/blob/main/sources/suid.move

1.2.2 数据结构说明

（1）流动性质押池对象

成员变量包括：

质押的SUI代币
质押产生的SUID代币

    // Shared pool object
    struct Pool has key {
        id: UID,
        sui: Balance&lt;SUI>,
        treasury: TreasuryCap&lt;SUID>,
    }

1.2.3 接口说明

（1）初始化方法（`init`）

通过一次性见证（One Time Witness, OTW）方式进行初始化，创建SUID国库
并以此创建流动性质押池共享对象Pool

    // custom coin SUID
    struct SUID has drop {}

    #[allow(unused_function)]
    fun init(witness: SUID, ctx: &mut TxContext) {
        let (treasury, metadata) = coin::create_currency(
            witness,
            9,
            b"SUID",
            b"Dacade Staked SUI",
            b"SUID is a Decade Staked SUI",
            option::none(),
            ctx
        );

        // Make metadata immutable
        transfer::public_freeze_object(metadata);

        // Create the shared pool
        transfer::share_object(Pool {
            id: object::new(ctx),
            sui: balance::zero&lt;SUI>(),
            treasury,  
        });
    }

（2）添加流动性（`add_liquidity_`）

添加SUI到流动性池中，将1:1得到SUID作为回报

    /*
        Entrypoint for the `add_liquidity` method. Sends `SUID` to
        the transaction sender.
        pool: The shared pool where user want to stake sui.
        sui : SUI user want to stake.

    */
    entry fun add_liquidity_(
        pool: &mut Pool, sui: Coin&lt;SUI>, ctx: &mut TxContext
    ) {
        let liquidity=add_liquidity(pool, sui, ctx);
        transfer::public_transfer(liquidity, tx_context::sender(ctx)
        );
    }

    /* 
        add liquidity to the `Pool` by transfer `SUID`.
        pool: The shared pool where user want to stake sui.
        sui : SUI user want to stake.
        Retrund SUID for given SUI.
    */
    public fun add_liquidity(
        pool: &mut Pool, sui: Coin&lt;SUI>, ctx: &mut TxContext
    ): Coin&lt;SUID> {
        is_valid_amount(coin::value(&sui));

        let sui_balance = coin::into_balance(sui);
        let sui_added = balance::value(&sui_balance);
        // Increase the supply of SUID
        let balance = balance::increase_supply(coin::supply_mut(&mut pool.treasury), sui_added);
        balance::join(&mut pool.sui, sui_balance);
        coin::from_balance(balance, ctx)
    }

    // Check if SUI AMount has required value
    fun is_valid_amount(amount:u64)  {
        assert!(amount>= FLOAT_SCALING,EAmountTooLow)
    }

（3）移除流动性（`remove_liquidity_`）

从池中移除流动性，将燃烧SUID代币，并返回质押的SUI

    /*
        Entrypoint for the `remove_liquidity` method. Transfers
        withdrawn assets (SUI) to the sender.
        pool: The shared pool where user want to unstake sui.
        suid : SUID user want to unstake.
    */
    entry fun remove_liquidity_(
        pool: &mut Pool,
        suid: Coin&lt;SUID>,
        ctx: &mut TxContext
    ) {
        let (sui ) = remove_liquidity(pool, suid, ctx);
        let sender = tx_context::sender(ctx);
        transfer::public_transfer(sui, sender);
    }  

    /*
        Remove liquidity from the `Pool` by burning `SUID`.
        pool: The shared pool where user want to unstake sui
        suid : SUID user want to unstake
        Returns `Coin&lt;SUI>`.
    */
    public fun remove_liquidity (
        pool: &mut Pool,
        suid: Coin&lt;SUID>,
        ctx: &mut TxContext
    ): Coin&lt;SUI> {
        is_valid_amount(coin::value(&suid));
        let suid_amount = coin::value(&suid);
        balance::decrease_supply(coin::supply_mut(&mut pool.treasury), coin::into_balance(suid));
        coin::take(&mut pool.sui, suid_amount, ctx)
    }

（4）质押SUI到指定的验证者（`stake`）

    /*
        stake the `SUI` with the given validator.
        sui : SUI user want to stake.
        state: The state of the SUI system.
        validator_address: The address of the validator to stake with.

    */

    public fun stake( 
        sui: Coin&lt;SUI>, 
        state: &mut SuiSystemState,
        validator_address: address,
        ctx: &mut TxContext

    ) {
        sui_system::request_add_stake(state, sui, validator_address, ctx);
    }

（5）从指定验证者解除质押（`unstake`）

    /*
        unstake the `SUI`.
        state: The state of the SUI system.
        staked_sui: The staked SUI object.
        ctx: The transaction context.
    */

    public fun unstake(
        state: &mut SuiSystemState,
        staked_sui: StakedSui,
        ctx: &mut TxContext,
    ) {
        sui_system::request_withdraw_stake(
            state,  
            staked_sui, 
            ctx
        );
    }

2 前置准备

2.1 帐号准备及角色分配

别名	地址	角色
Jason	`0x5c5882d73a6e5b6ea1743fb028eff5e0d7cc8b7ae123d27856c5fe666d91569a`	账号1
Alice	`0x2d178b9704706393d2630fe6cf9415c2c50b181e9e3c7a977237bb2929f82d19`	账号2
Bob	`0xf2e6ffef7d0543e258d4c47a53d6fa9872de4630cc186950accbd83415b009f0`	账号3

将地址添加到环境变量

export JASON=0x5c5882d73a6e5b6ea1743fb028eff5e0d7cc8b7ae123d27856c5fe666d91569a
export ALICE=0x2d178b9704706393d2630fe6cf9415c2c50b181e9e3c7a977237bb2929f82d19
export BOB=0xf2e6ffef7d0543e258d4c47a53d6fa9872de4630cc186950accbd83415b009f0

3 合约部署

切换到Jason账号

sui client publish --gas-budget 100000000

命令输出关键信息截图

将关键的对象ID记录到环境变量，方便后续调用使用

export PACKAGE_ID=0xdbd3c92e445f176cf8cb2874791d816964615d20da4218530671b625c2978be1

# PACKAGE_ID::suid::Pool
export POOL=0x8913f6eba39d948c7ea2f8a481b4451bf89ab0618662c6323cb5b853bfaefd18

4 合约交互

4.1 添加流动性（`add_liquidity_`）

export COIN=0x8dea9b14702e1ce63b11d1a2a6f9bc6aaadb91d38cb20b5e0cfa0d93486f206a

sui client call --function add_liquidity_ --package $PACKAGE_ID --module suid --args $POOL $COIN --gas-budget 10000000

得到SUID对象

#  0x2::coin::Coin&lt;PACKAGE_ID::suid::SUID>
export SUID=0x15b755334120e2c1a1783bb3b9e616f7dd6a078d548da14e0adfa7299336b211

查看SUID对象

sui client object $SUID

4.2 移除流动性（`remove_liquidity_`）

sui client call --function remove_liquidity_ --package $PACKAGE_ID --module suid --args $POOL $SUID --gas-budget 10000000

取回添加的SUI代币

# 0x2::coin::Coin&lt;0x2::sui::SUI> 
export COIN2=0xce4d7792ebc78d43e6fd3770be7bd3dfd45b16de2329d269a801c14d858da948

查看取回的SUI对象

sui client object $COIN2

4.3 质押SUI到指定的验证者（`stake`）

export COIN=0x11baf1209cf52ecdea1c283ffa3d96466bbddb99ef23742d81cd89dd12c30a8a # 1SUI
export VALIDATOR_ADDRESS=0x8ffaea5d47a38291e5dd390b6d4c40fd3b1f17864aec217a2f808d8f1ca9b26b # 测试网MoveFunsDAO验证者地址
sui client call --function stake --package $PACKAGE_ID --module suid --args $COIN 0x5 $VALIDATOR_ADDRESS --gas-budget 10000000

抛出事件

得到StakedSui对象

export STAKED_SUI=0x53f99cc9a342f619ae79411e0fb622812aabf9f41581962862aa638608f5b2bf

查看StakedSui对象

sui client object $STAKED_SUI

通过钱包查看质押对象

4.4 从指定验证者解除质押（`unstake`）

有些质押解除会报错，不知为何？：const EStakeWithdrawBeforeActivation: u64 = 6;，

Error executing transaction: Failure {
    error: "MoveAbort(MoveLocation { module: ModuleId { address: 0000000000000000000000000000000000000000000000000000000000000003, name: Identifier(\"sui_system_state_inner\") }, function: 13, instruction: 12, function_name: Some(\"request_withdraw_stake\") }, 6) in command 0",
}

sui client call --function unstake --package $PACKAGE_ID --module suid --args 0x5 $STAKED_SUI --gas-budget 10000000

抛出事件

取回质押的SUI

export UNSTAKED_SUI=0xdfb27566f85ecf3384c443f488053a1f3ad150c8d318c4d566889a054fc6352b
sui client object $UNSTAKED_SUI

5 更多

🚀参与星航计划开启你的 Sui Move 之旅！🚀

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