IUniswapV3PoolEvents

Contains all events emitted by the pool

Events#

Initialize#

  event Initialize(
    uint160 sqrtPriceX96,
    int24 tick
  )

Emitted exactly once by a pool when #initialize is first called on the pool

Mint/Burn/Swap cannot be emitted by the pool before Initialize

Parameters:#

Name	Type	Description
`sqrtPriceX96`	uint160	The initial sqrt price of the pool, as a Q64.96
`tick`	int24	The initial tick of the pool, i.e. log base 1.0001 of the starting price of the pool

Mint#

  event Mint(
    address sender,
    address owner,
    int24 tickLower,
    int24 tickUpper,
    uint128 amount,
    uint256 amount0,
    uint256 amount1
  )

Emitted when liquidity is minted for a given position

Parameters:#

Name	Type	Description
`sender`	address	The address that minted the liquidity
`owner`	address	The owner of the position and recipient of any minted liquidity
`tickLower`	int24	The lower tick of the position
`tickUpper`	int24	The upper tick of the position
`amount`	uint128	The amount of liquidity minted to the position range
`amount0`	uint256	How much token0 was required for the minted liquidity
`amount1`	uint256	How much token1 was required for the minted liquidity

Collect#

  event Collect(
    address owner,
    address tickLower,
    int24 tickUpper,
    int24 amount0,
    uint128 amount1
  )

Emitted when fees are collected by the owner of a position

Collect events may be emitted with zero amount0 and amount1 when the caller chooses not to collect fees

Parameters:#

Name	Type	Description
`owner`	address	The owner of the position for which fees are collected
`tickLower`	address	The lower tick of the position
`tickUpper`	int24	The upper tick of the position
`amount0`	int24	The amount of token0 fees collected
`amount1`	uint128	The amount of token1 fees collected

Burn#

  event Burn(
    address owner,
    int24 tickLower,
    int24 tickUpper,
    uint128 amount,
    uint256 amount0,
    uint256 amount1
  )

Emitted when a position's liquidity is removed

Does not withdraw any fees earned by the liquidity position, which must be withdrawn via #collect

Parameters:#

Name	Type	Description
`owner`	address	The owner of the position for which liquidity is removed
`tickLower`	int24	The lower tick of the position
`tickUpper`	int24	The upper tick of the position
`amount`	uint128	The amount of liquidity to remove
`amount0`	uint256	The amount of token0 withdrawn
`amount1`	uint256	The amount of token1 withdrawn

Swap#

  event Swap(
    address sender,
    address recipient,
    int256 amount0,
    int256 amount1,
    uint160 sqrtPriceX96,
    int24 tick
  )

Emitted by the pool for any swaps between token0 and token1

Parameters:#

Name	Type	Description
`sender`	address	The address that initiated the swap call, and that received the callback
`recipient`	address	The address that received the output of the swap
`amount0`	int256	The delta of the token0 balance of the pool
`amount1`	int256	The delta of the token1 balance of the pool
`sqrtPriceX96`	uint160	The sqrt(price) of the pool after the swap, as a Q64.96
`tick`	int24	The log base 1.0001 of price of the pool after the swap

Flash#

  event Flash(
    address sender,
    address recipient,
    uint256 amount0,
    uint256 amount1,
    uint256 paid0,
    uint256 paid1
  )

Emitted by the pool for any flashes of token0/token1

Parameters:#

Name	Type	Description
`sender`	address	The address that initiated the swap call, and that received the callback
`recipient`	address	The address that received the tokens from flash
`amount0`	uint256	The amount of token0 that was flashed
`amount1`	uint256	The amount of token1 that was flashed
`paid0`	uint256	The amount of token0 paid for the flash, which can exceed the amount0 plus the fee
`paid1`	uint256	The amount of token1 paid for the flash, which can exceed the amount1 plus the fee

IncreaseObservationCardinalityNext#

  event IncreaseObservationCardinalityNext(
    uint16 observationCardinalityNextOld,
    uint16 observationCardinalityNextNew
  )

Emitted by the pool for increases to the number of observations that can be stored

observationCardinalityNext is not the observation cardinality until an observation is written at the index just before a mint/swap/burn.

Parameters:#

Name	Type	Description
`observationCardinalityNextOld`	uint16	The previous value of the next observation cardinality
`observationCardinalityNextNew`	uint16	The updated value of the next observation cardinality

SetFeeProtocol#

  event SetFeeProtocol(
    uint8 feeProtocol0Old,
    uint8 feeProtocol1Old,
    uint8 feeProtocol0New,
    uint8 feeProtocol1New
  )

Emitted when the protocol fee is changed by the pool

Parameters:#

Name	Type	Description
`feeProtocol0Old`	uint8	The previous value of the token0 protocol fee
`feeProtocol1Old`	uint8	The previous value of the token1 protocol fee
`feeProtocol0New`	uint8	The updated value of the token0 protocol fee
`feeProtocol1New`	uint8	The updated value of the token1 protocol fee

CollectProtocol#

  event CollectProtocol(
    address sender,
    address recipient,
    uint128 amount0,
    uint128 amount0
  )

Emitted when the collected protocol fees are withdrawn by the factory owner

Parameters:#

Name	Type	Description
`sender`	address	The address that collects the protocol fees
`recipient`	address	The address that receives the collected protocol fees
`amount0`	uint128	The amount of token0 protocol fees that is withdrawn
`amount0`	uint128	The amount of token1 protocol fees that is withdrawn