Solana smart contract that represents a shared vault, acting as a liquidity pool for multiple users.
For a high-level description of the features covered by the smart project, please take a look at the following diagram:
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IDL for the communication with the smart contract can be found under target/idl/anchor-shared-vault.json.
The IDL is generated after building the project.
Initializing the shared vault implies the existence of an initializer, an admin account that will manage the shared vault. Besides opening up the vault with an initial amount of liquidity, the initializer can act as a regular user that can deposit and withdraw money. Being an admin, it confers him the power of whitelisting/blacklisting users in terms of withdrawing more money than they've deposited.
The shared vault can be used by regular users (anyone except the initializer) to deposit their money or to withdraw them. A whitelisted user can withdraw more money than had previously deposited, with the condition that the shared vault has sufficient funds.
The initializer account can whitelist or blacklist regular users and really itself. The requirement here is that the account that signs the witelist/blacklist instruction has to be identified by the same pubkey as the account that initialized the shared vault.
The anchor-shared-vault smart contract was developed through Anchor.
Follow these docs for to get started
with Anchor. To build the project, simply run anchor build.
To test it, start a solana test validator with solana-test-validator --reset, deploy the build
with anchor deploy and then run anchor test.
anchor-shared-vault
✔ Initialize program state (2930ms)
✔ Initialize shared vault (393ms)
✔ Deposit money (426ms)
✔ Withdraw money (415ms)
Transaction simulation failed: Error processing Instruction 0: custom program error: 0x1771
Program 3eC59jD55nX6HvYj6tE7ycbmj8ctBiGuCjLBvK6oFNz9 invoke [1]
Program log: Instruction: Withdraw
Program log: Custom program error: 0x1771
Program 3eC59jD55nX6HvYj6tE7ycbmj8ctBiGuCjLBvK6oFNz9 consumed 21895 of 200000 compute units
Program 3eC59jD55nX6HvYj6tE7ycbmj8ctBiGuCjLBvK6oFNz9 failed: custom program error: 0x1771
✔ Non-whitelisted withdraw money (76ms) // This test is expected to fail and the error is piped to stdout.
✔ Whitelisted withdraw money (344ms)
✔ Whitelisted resolve debt (402ms)
✔ Check whitelist/blacklist (833ms)