Function: initialize

Simply initializes SwapEndpointDataAccount to default values.

Accounts

• swap_endpoint_data_account

  • Validation: Account being initialized — no validation required.

  • Impact: N/A.

• signer

  • Validation: Account is signer.

  • Impact: N/A.

Instruction parameters

N/A.

Function: x_swap_native

This function does the following:

• Checks that the number of open event accounts is larger than the maximum-allowed event accounts

• Adds the event-account pubkey to the list of open event accounts

• Transfers lamports from the signer to the aggregate key account

• Updates the event-data account with the params

Accounts

• data_account

  • Validation: Account owner and discriminator are checked. Checked if swaps are suspended.

  • Impact: N/A.

• agg_key

  • Validation: Key validated through data_account.

  • Impact: Lamports from the native swap are sent to this account.

• from

  • Validation: Account is a signer.

  • Impact: Lamports are sent from this account.

• event_data_account

  • Validation: Newly initialized account — no validation required.

  • Impact: Stores data for the swap.

• swap_endpoint_data_account

  • Validation: Account owner and discriminator are checked.

  • Impact: Stores the pubkey for the event-data account.

Instruction parameters

• swap_native_params

  • The amount and decimals values in the structure are used to transfer lamports from the signer.

  • The amount is checked to be larger than the minimum native swap amount.

  • The remaining values are stored in the event-data account, and no validation is performed.

Function: x_swap_token

This function does the following:

• Checks that the number of open event accounts is larger than the maximum-allowed event accounts

• Adds the event-account pubkey to the list of open event accounts

• Transfers lamports from the signer to the aggregate key account

• Updates the event-data account with the params

Accounts

• data_account

  • Validation: Account owner and discriminator are checked. Checked if swaps are suspended.

  • Impact: N/A.

• agg_key

  • Validation: Key validated through data_account.

  • Impact: Lamports from the native swap are sent to this account.

• from

  • Validation: Account is a signer.

  • Impact: Lamports are sent from this account.

• event_data_account

  • Validation: Newly initialized account — no validation required.

  • Impact: Stores data for the swap.

• swap_endpoint_data_account

  • Validation: Account owner and discriminator are checked.

  • Impact: Stores the pubkey for the event-data account.

Instruction parameters

• x_swap_token

  • The amount and decimals values in the structure are used to transfer lamports from the signer.

  • The amount is checked to be larger than the minimum native swap amount.

  • The remaining values are stored in the event-data account, and no validation is performed.

Function: x_swap_token

This function does the following:

• Checks the mint from the SupportedToken account

• Checks that the number of open event accounts is larger than the maximum-allowed event accounts

• Adds the event-account pubkey to the list of open event accounts

• Transfers tokens from the user to the token vault

• Updates the event-data account with the params

Accounts

• data_account

  • Validation: Account owner and discriminator are checked. Checked if swaps are suspended.

  • Impact: N/A.

• token_vault_associated_token_account

  • Validation: Checked to be the correct ATA through the mint and authority from the data account.

  • Impact: Tokens to swap are transferred to this token account.

• from

  • Validation: Account is a signer.

  • Impact: Signer for the token account.

• from_token_account

  • Validation: Account checked to be owned by the signer.

  • Impact: Tokens to be swapped are sent from this token account.

• event_data_account

  • Validation: Newly initialized account — no validation required.

  • Impact: Stores data for the swap.

• swap_endpoint_data_account

  • Validation: Account owner and discriminator are checked.

  • Impact: Stores the pubkey for the event-data account.

• token_supported_account

  • Validation: Account owner and discriminator are checked.

  • Impact: Used to check if the token swapped from is supported.

• mint

  • Validation: Mint is checked within the instruction logic.

  • Impact: N/A.

Instruction parameters

• swap_native_params

  • The amount and decimals values in the structure are used to transfer lamports from the signer.

  • The amount is checked to be larger than the minimum native swap amount.

  • The remaining values are stored in the event data account, and no validation is performed.

close_event_accounts

This function does the following:

• Iterates through the remaining accounts to fetch SwapEvent accounts and payee accounts

• Checks that both accounts are writable

• Tries to deserialize the event account but emits a failure in case of failed deserialization due to a reorg

• Checks that the payee key is equal to event_account.sender

• Closes the event account and refunds the rent to the original payee

• Gets the index for the event account key from swap_endpoint_data_account

  • Deletes the index from swap_endpoint_data_account

  • Computes the new size by subtracting the pubkey size

  • Verifies that the new size is larger or equal to the minimum size

  • Reallocates swap_endpoint_data_account with the new size and transfers the rent difference to the original payee

Accounts

• data_account

  • Validation: Account owner and discriminator are checked. Checked if swaps are suspended.

  • Impact: N/A.

• agg_key

  • Validation: Key validated through data_account.

  • Impact: N/A.

• swap_endpoint_data_account

  • Validation: Account owner and discriminator are checked.

  • Impact: Used to check if pubkeys for event accounts are valid.

Instruction parameters

N/A.