Address Contract Partially Verified
Address
0x2F50D538606Fa9EDD2B11E2446BEb18C9D5846bB
Balance
0 ETH
Nonce
1
Code Size
12013 bytes
Creator
0xc4AD0Ef3...7Be4 at tx 0x9917053e...677619
Indexed Transactions
0 (1 on-chain, 1.7% indexed)
Contract Bytecode
12013 bytes
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Verified Source Code Partial Match
Compiler: v0.2.4+commit.7949850
Vyper_contract.vy 596 lines
# @version 0.2.4
"""
@title Gauge Controller
@author Curve Finance
@license MIT
@notice Controls liquidity gauges and the issuance of coins through the gauges
"""
# 7 * 86400 seconds - all future times are rounded by week
WEEK: constant(uint256) = 604800
# Cannot change weight votes more often than once in 10 days
WEIGHT_VOTE_DELAY: constant(uint256) = 10 * 86400
struct Point:
bias: uint256
slope: uint256
struct VotedSlope:
slope: uint256
power: uint256
end: uint256
interface VotingEscrow:
def get_last_user_slope(addr: address) -> int128: view
def locked__end(addr: address) -> uint256: view
event CommitOwnership:
admin: address
event ApplyOwnership:
admin: address
event AddType:
name: String[64]
type_id: int128
event NewTypeWeight:
type_id: int128
time: uint256
weight: uint256
total_weight: uint256
event NewGaugeWeight:
gauge_address: address
time: uint256
weight: uint256
total_weight: uint256
event VoteForGauge:
time: uint256
user: address
gauge_addr: address
weight: uint256
event NewGauge:
addr: address
gauge_type: int128
weight: uint256
MULTIPLIER: constant(uint256) = 10 ** 18
admin: public(address) # Can and will be a smart contract
future_admin: public(address) # Can and will be a smart contract
token: public(address) # CRV token
voting_escrow: public(address) # Voting escrow
# Gauge parameters
# All numbers are "fixed point" on the basis of 1e18
n_gauge_types: public(int128)
n_gauges: public(int128)
gauge_type_names: public(HashMap[int128, String[64]])
# Needed for enumeration
gauges: public(address[1000000000])
# we increment values by 1 prior to storing them here so we can rely on a value
# of zero as meaning the gauge has not been set
gauge_types_: HashMap[address, int128]
vote_user_slopes: public(HashMap[address, HashMap[address, VotedSlope]]) # user -> gauge_addr -> VotedSlope
vote_user_power: public(HashMap[address, uint256]) # Total vote power used by user
last_user_vote: public(HashMap[address, HashMap[address, uint256]]) # Last user vote's timestamp for each gauge address
# Past and scheduled points for gauge weight, sum of weights per type, total weight
# Point is for bias+slope
# changes_* are for changes in slope
# time_* are for the last change timestamp
# timestamps are rounded to whole weeks
points_weight: public(HashMap[address, HashMap[uint256, Point]]) # gauge_addr -> time -> Point
changes_weight: HashMap[address, HashMap[uint256, uint256]] # gauge_addr -> time -> slope
time_weight: public(HashMap[address, uint256]) # gauge_addr -> last scheduled time (next week)
points_sum: public(HashMap[int128, HashMap[uint256, Point]]) # type_id -> time -> Point
changes_sum: HashMap[int128, HashMap[uint256, uint256]] # type_id -> time -> slope
time_sum: public(uint256[1000000000]) # type_id -> last scheduled time (next week)
points_total: public(HashMap[uint256, uint256]) # time -> total weight
time_total: public(uint256) # last scheduled time
points_type_weight: public(HashMap[int128, HashMap[uint256, uint256]]) # type_id -> time -> type weight
time_type_weight: public(uint256[1000000000]) # type_id -> last scheduled time (next week)
@external
def __init__(_token: address, _voting_escrow: address):
"""
@notice Contract constructor
@param _token `ERC20CRV` contract address
@param _voting_escrow `VotingEscrow` contract address
"""
assert _token != ZERO_ADDRESS
assert _voting_escrow != ZERO_ADDRESS
self.admin = msg.sender
self.token = _token
self.voting_escrow = _voting_escrow
self.time_total = block.timestamp / WEEK * WEEK
@external
def commit_transfer_ownership(addr: address):
"""
@notice Transfer ownership of GaugeController to `addr`
@param addr Address to have ownership transferred to
"""
assert msg.sender == self.admin # dev: admin only
self.future_admin = addr
log CommitOwnership(addr)
@external
def apply_transfer_ownership():
"""
@notice Apply pending ownership transfer
"""
assert msg.sender == self.admin # dev: admin only
_admin: address = self.future_admin
assert _admin != ZERO_ADDRESS # dev: admin not set
self.admin = _admin
log ApplyOwnership(_admin)
@external
@view
def gauge_types(_addr: address) -> int128:
"""
@notice Get gauge type for address
@param _addr Gauge address
@return Gauge type id
"""
gauge_type: int128 = self.gauge_types_[_addr]
assert gauge_type != 0
return gauge_type - 1
@internal
def _get_type_weight(gauge_type: int128) -> uint256:
"""
@notice Fill historic type weights week-over-week for missed checkins
and return the type weight for the future week
@param gauge_type Gauge type id
@return Type weight
"""
t: uint256 = self.time_type_weight[gauge_type]
if t > 0:
w: uint256 = self.points_type_weight[gauge_type][t]
for i in range(500):
if t > block.timestamp:
break
t += WEEK
self.points_type_weight[gauge_type][t] = w
if t > block.timestamp:
self.time_type_weight[gauge_type] = t
return w
else:
return 0
@internal
def _get_sum(gauge_type: int128) -> uint256:
"""
@notice Fill sum of gauge weights for the same type week-over-week for
missed checkins and return the sum for the future week
@param gauge_type Gauge type id
@return Sum of weights
"""
t: uint256 = self.time_sum[gauge_type]
if t > 0:
pt: Point = self.points_sum[gauge_type][t]
for i in range(500):
if t > block.timestamp:
break
t += WEEK
d_bias: uint256 = pt.slope * WEEK
if pt.bias > d_bias:
pt.bias -= d_bias
d_slope: uint256 = self.changes_sum[gauge_type][t]
pt.slope -= d_slope
else:
pt.bias = 0
pt.slope = 0
self.points_sum[gauge_type][t] = pt
if t > block.timestamp:
self.time_sum[gauge_type] = t
return pt.bias
else:
return 0
@internal
def _get_total() -> uint256:
"""
@notice Fill historic total weights week-over-week for missed checkins
and return the total for the future week
@return Total weight
"""
t: uint256 = self.time_total
_n_gauge_types: int128 = self.n_gauge_types
if t > block.timestamp:
# If we have already checkpointed - still need to change the value
t -= WEEK
pt: uint256 = self.points_total[t]
for gauge_type in range(100):
if gauge_type == _n_gauge_types:
break
self._get_sum(gauge_type)
self._get_type_weight(gauge_type)
for i in range(500):
if t > block.timestamp:
break
t += WEEK
pt = 0
# Scales as n_types * n_unchecked_weeks (hopefully 1 at most)
for gauge_type in range(100):
if gauge_type == _n_gauge_types:
break
type_sum: uint256 = self.points_sum[gauge_type][t].bias
type_weight: uint256 = self.points_type_weight[gauge_type][t]
pt += type_sum * type_weight
self.points_total[t] = pt
if t > block.timestamp:
self.time_total = t
return pt
@internal
def _get_weight(gauge_addr: address) -> uint256:
"""
@notice Fill historic gauge weights week-over-week for missed checkins
and return the total for the future week
@param gauge_addr Address of the gauge
@return Gauge weight
"""
t: uint256 = self.time_weight[gauge_addr]
if t > 0:
pt: Point = self.points_weight[gauge_addr][t]
for i in range(500):
if t > block.timestamp:
break
t += WEEK
d_bias: uint256 = pt.slope * WEEK
if pt.bias > d_bias:
pt.bias -= d_bias
d_slope: uint256 = self.changes_weight[gauge_addr][t]
pt.slope -= d_slope
else:
pt.bias = 0
pt.slope = 0
self.points_weight[gauge_addr][t] = pt
if t > block.timestamp:
self.time_weight[gauge_addr] = t
return pt.bias
else:
return 0
@external
def add_gauge(addr: address, gauge_type: int128, weight: uint256 = 0):
"""
@notice Add gauge `addr` of type `gauge_type` with weight `weight`
@param addr Gauge address
@param gauge_type Gauge type
@param weight Gauge weight
"""
assert msg.sender == self.admin
assert (gauge_type >= 0) and (gauge_type < self.n_gauge_types)
assert self.gauge_types_[addr] == 0 # dev: cannot add the same gauge twice
n: int128 = self.n_gauges
self.n_gauges = n + 1
self.gauges[n] = addr
self.gauge_types_[addr] = gauge_type + 1
next_time: uint256 = (block.timestamp + WEEK) / WEEK * WEEK
if weight > 0:
_type_weight: uint256 = self._get_type_weight(gauge_type)
_old_sum: uint256 = self._get_sum(gauge_type)
_old_total: uint256 = self._get_total()
self.points_sum[gauge_type][next_time].bias = weight + _old_sum
self.time_sum[gauge_type] = next_time
self.points_total[next_time] = _old_total + _type_weight * weight
self.time_total = next_time
self.points_weight[addr][next_time].bias = weight
if self.time_sum[gauge_type] == 0:
self.time_sum[gauge_type] = next_time
self.time_weight[addr] = next_time
log NewGauge(addr, gauge_type, weight)
@external
def checkpoint():
"""
@notice Checkpoint to fill data common for all gauges
"""
self._get_total()
@external
def checkpoint_gauge(addr: address):
"""
@notice Checkpoint to fill data for both a specific gauge and common for all gauges
@param addr Gauge address
"""
self._get_weight(addr)
self._get_total()
@internal
@view
def _gauge_relative_weight(addr: address, time: uint256) -> uint256:
"""
@notice Get Gauge relative weight (not more than 1.0) normalized to 1e18
(e.g. 1.0 == 1e18). Inflation which will be received by it is
inflation_rate * relative_weight / 1e18
@param addr Gauge address
@param time Relative weight at the specified timestamp in the past or present
@return Value of relative weight normalized to 1e18
"""
t: uint256 = time / WEEK * WEEK
_total_weight: uint256 = self.points_total[t]
if _total_weight > 0:
gauge_type: int128 = self.gauge_types_[addr] - 1
_type_weight: uint256 = self.points_type_weight[gauge_type][t]
_gauge_weight: uint256 = self.points_weight[addr][t].bias
return MULTIPLIER * _type_weight * _gauge_weight / _total_weight
else:
return 0
@external
@view
def gauge_relative_weight(addr: address, time: uint256 = block.timestamp) -> uint256:
"""
@notice Get Gauge relative weight (not more than 1.0) normalized to 1e18
(e.g. 1.0 == 1e18). Inflation which will be received by it is
inflation_rate * relative_weight / 1e18
@param addr Gauge address
@param time Relative weight at the specified timestamp in the past or present
@return Value of relative weight normalized to 1e18
"""
return self._gauge_relative_weight(addr, time)
@external
def gauge_relative_weight_write(addr: address, time: uint256 = block.timestamp) -> uint256:
"""
@notice Get gauge weight normalized to 1e18 and also fill all the unfilled
values for type and gauge records
@dev Any address can call, however nothing is recorded if the values are filled already
@param addr Gauge address
@param time Relative weight at the specified timestamp in the past or present
@return Value of relative weight normalized to 1e18
"""
self._get_weight(addr)
self._get_total() # Also calculates get_sum
return self._gauge_relative_weight(addr, time)
@internal
def _change_type_weight(type_id: int128, weight: uint256):
"""
@notice Change type weight
@param type_id Type id
@param weight New type weight
"""
old_weight: uint256 = self._get_type_weight(type_id)
old_sum: uint256 = self._get_sum(type_id)
_total_weight: uint256 = self._get_total()
next_time: uint256 = (block.timestamp + WEEK) / WEEK * WEEK
_total_weight = _total_weight + old_sum * weight - old_sum * old_weight
self.points_total[next_time] = _total_weight
self.points_type_weight[type_id][next_time] = weight
self.time_total = next_time
self.time_type_weight[type_id] = next_time
log NewTypeWeight(type_id, next_time, weight, _total_weight)
@external
def add_type(_name: String[64], weight: uint256 = 0):
"""
@notice Add gauge type with name `_name` and weight `weight`
@param _name Name of gauge type
@param weight Weight of gauge type
"""
assert msg.sender == self.admin
type_id: int128 = self.n_gauge_types
self.gauge_type_names[type_id] = _name
self.n_gauge_types = type_id + 1
if weight != 0:
self._change_type_weight(type_id, weight)
log AddType(_name, type_id)
@external
def change_type_weight(type_id: int128, weight: uint256):
"""
@notice Change gauge type `type_id` weight to `weight`
@param type_id Gauge type id
@param weight New Gauge weight
"""
assert msg.sender == self.admin
self._change_type_weight(type_id, weight)
@internal
def _change_gauge_weight(addr: address, weight: uint256):
# Change gauge weight
# Only needed when testing in reality
gauge_type: int128 = self.gauge_types_[addr] - 1
old_gauge_weight: uint256 = self._get_weight(addr)
type_weight: uint256 = self._get_type_weight(gauge_type)
old_sum: uint256 = self._get_sum(gauge_type)
_total_weight: uint256 = self._get_total()
next_time: uint256 = (block.timestamp + WEEK) / WEEK * WEEK
self.points_weight[addr][next_time].bias = weight
self.time_weight[addr] = next_time
new_sum: uint256 = old_sum + weight - old_gauge_weight
self.points_sum[gauge_type][next_time].bias = new_sum
self.time_sum[gauge_type] = next_time
_total_weight = _total_weight + new_sum * type_weight - old_sum * type_weight
self.points_total[next_time] = _total_weight
self.time_total = next_time
log NewGaugeWeight(addr, block.timestamp, weight, _total_weight)
@external
def change_gauge_weight(addr: address, weight: uint256):
"""
@notice Change weight of gauge `addr` to `weight`
@param addr `GaugeController` contract address
@param weight New Gauge weight
"""
assert msg.sender == self.admin
self._change_gauge_weight(addr, weight)
@external
def vote_for_gauge_weights(_gauge_addr: address, _user_weight: uint256):
"""
@notice Allocate voting power for changing pool weights
@param _gauge_addr Gauge which `msg.sender` votes for
@param _user_weight Weight for a gauge in bps (units of 0.01%). Minimal is 0.01%. Ignored if 0
"""
escrow: address = self.voting_escrow
slope: uint256 = convert(VotingEscrow(escrow).get_last_user_slope(msg.sender), uint256)
lock_end: uint256 = VotingEscrow(escrow).locked__end(msg.sender)
_n_gauges: int128 = self.n_gauges
next_time: uint256 = (block.timestamp + WEEK) / WEEK * WEEK
assert lock_end > next_time, "Your token lock expires too soon"
assert (_user_weight >= 0) and (_user_weight <= 10000), "You used all your voting power"
assert block.timestamp >= self.last_user_vote[msg.sender][_gauge_addr] + WEIGHT_VOTE_DELAY, "Cannot vote so often"
gauge_type: int128 = self.gauge_types_[_gauge_addr] - 1
assert gauge_type >= 0, "Gauge not added"
# Prepare slopes and biases in memory
old_slope: VotedSlope = self.vote_user_slopes[msg.sender][_gauge_addr]
old_dt: uint256 = 0
if old_slope.end > next_time:
old_dt = old_slope.end - next_time
old_bias: uint256 = old_slope.slope * old_dt
new_slope: VotedSlope = VotedSlope({
slope: slope * _user_weight / 10000,
end: lock_end,
power: _user_weight
})
new_dt: uint256 = lock_end - next_time # dev: raises when expired
new_bias: uint256 = new_slope.slope * new_dt
# Check and update powers (weights) used
power_used: uint256 = self.vote_user_power[msg.sender]
power_used = power_used + new_slope.power - old_slope.power
self.vote_user_power[msg.sender] = power_used
assert (power_used >= 0) and (power_used <= 10000), 'Used too much power'
## Remove old and schedule new slope changes
# Remove slope changes for old slopes
# Schedule recording of initial slope for next_time
old_weight_bias: uint256 = self._get_weight(_gauge_addr)
old_weight_slope: uint256 = self.points_weight[_gauge_addr][next_time].slope
old_sum_bias: uint256 = self._get_sum(gauge_type)
old_sum_slope: uint256 = self.points_sum[gauge_type][next_time].slope
self.points_weight[_gauge_addr][next_time].bias = max(old_weight_bias + new_bias, old_bias) - old_bias
self.points_sum[gauge_type][next_time].bias = max(old_sum_bias + new_bias, old_bias) - old_bias
if old_slope.end > next_time:
self.points_weight[_gauge_addr][next_time].slope = max(old_weight_slope + new_slope.slope, old_slope.slope) - old_slope.slope
self.points_sum[gauge_type][next_time].slope = max(old_sum_slope + new_slope.slope, old_slope.slope) - old_slope.slope
else:
self.points_weight[_gauge_addr][next_time].slope += new_slope.slope
self.points_sum[gauge_type][next_time].slope += new_slope.slope
if old_slope.end > block.timestamp:
# Cancel old slope changes if they still didn't happen
self.changes_weight[_gauge_addr][old_slope.end] -= old_slope.slope
self.changes_sum[gauge_type][old_slope.end] -= old_slope.slope
# Add slope changes for new slopes
self.changes_weight[_gauge_addr][new_slope.end] += new_slope.slope
self.changes_sum[gauge_type][new_slope.end] += new_slope.slope
self._get_total()
self.vote_user_slopes[msg.sender][_gauge_addr] = new_slope
# Record last action time
self.last_user_vote[msg.sender][_gauge_addr] = block.timestamp
log VoteForGauge(block.timestamp, msg.sender, _gauge_addr, _user_weight)
@external
@view
def get_gauge_weight(addr: address) -> uint256:
"""
@notice Get current gauge weight
@param addr Gauge address
@return Gauge weight
"""
return self.points_weight[addr][self.time_weight[addr]].bias
@external
@view
def get_type_weight(type_id: int128) -> uint256:
"""
@notice Get current type weight
@param type_id Type id
@return Type weight
"""
return self.points_type_weight[type_id][self.time_type_weight[type_id]]
@external
@view
def get_total_weight() -> uint256:
"""
@notice Get current total (type-weighted) weight
@return Total weight
"""
return self.points_total[self.time_total]
@external
@view
def get_weights_sum_per_type(type_id: int128) -> uint256:
"""
@notice Get sum of gauge weights per type
@param type_id Type id
@return Sum of gauge weights
"""
return self.points_sum[type_id][self.time_sum[type_id]].bias
Read Contract
admin 0xf851a440 → address
future_admin 0x17f7182a → address
gauge_relative_weight 0x6207d866 → uint256
gauge_relative_weight 0xd3078c94 → uint256
gauge_type_names 0xd958a8fc → string
gauge_types 0x3f9095b7 → int128
gauges 0xb0539187 → address
get_gauge_weight 0x4e791a3a → uint256
get_total_weight 0x6977ff92 → uint256
get_type_weight 0x72fdccfa → uint256
get_weights_sum_per_type 0x6f214a6a → uint256
last_user_vote 0x7e418fa0 → uint256
n_gauge_types 0x9fba03a1 → int128
n_gauges 0xe93841d0 → int128
points_sum 0xa9b48c01 → uint256, uint256
points_total 0x1142916b → uint256
points_type_weight 0xafd2bb49 → uint256
points_weight 0xedba5273 → uint256, uint256
time_sum 0x5a549158 → uint256
time_total 0x513872bd → uint256
time_type_weight 0x51ce6b59 → uint256
time_weight 0xa4d7a250 → uint256
token 0xfc0c546a → address
vote_user_power 0x411e74b5 → uint256
vote_user_slopes 0x0f467f98 → uint256, uint256, uint256
voting_escrow 0xdfe05031 → address
Write Contract 13 functions
These functions modify contract state and require a wallet transaction to execute.
add_gauge 0x3a04f900
address addr
int128 gauge_type
add_gauge 0x18dfe921
address addr
int128 gauge_type
uint256 weight
add_type 0x26e56d5e
string _name
add_type 0x92d0d232
string _name
uint256 weight
apply_transfer_ownership 0x6a1c05ae
No parameters
change_gauge_weight 0xd4d2646e
address addr
uint256 weight
change_type_weight 0xdb1ca260
int128 type_id
uint256 weight
checkpoint 0xc2c4c5c1
No parameters
checkpoint_gauge 0x615e5237
address addr
commit_transfer_ownership 0x6b441a40
address addr
gauge_relative_weight_write 0x95cfcec3
address addr
returns: uint256
gauge_relative_weight_write 0x6472eee1
address addr
uint256 time
returns: uint256
vote_for_gauge_weights 0xd7136328
address _gauge_addr
uint256 _user_weight
Recent Transactions
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