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from __future__ import absolute_import, print_function
from pyrocko.guts import Object, Timestamp
class Constraint(Object):
tmin = Timestamp.T(optional=True)
tmax = Timestamp.T(optional=True)
def contains(self, constraint):
'''
Check if the constraint completely includes a more restrictive one.
'''
if self.tmin is not None and constraint.tmin is not None:
b1 = self.tmin <= constraint.tmin
elif self.tmin is None:
b1 = True
else:
b1 = False
if self.tmax is not None and constraint.tmax is not None:
b2 = constraint.tmax <= self.tmax
elif self.tmax is None:
b2 = True
else:
b2 = False
return b1 and b2
def expand(self, constraint):
'''
Widen constraint to include another given constraint.
'''
if constraint.tmin is None or self.tmin is None:
self.tmin = None
else:
self.tmin = min(constraint.tmin, self.tmin)
if constraint.tmax is None or self.tmax is None:
self.tmax = None
else:
self.tmax = max(constraint.tmax, self.tmax)
class Source(Object):
def update_channel_inventory(self, squirrel, constraint):
'''
Let local inventory be up-to-date with remote for a given constraint.
'''
pass
def update_event_inventory(self, squirrel, contraint):
'''
Let local inventory be up-to-date with remote for a given constraint.
'''
pass
def update_waveform_inventory(self, squirrel, contraint):
'''
Let local inventory be up-to-date with remote for a given constraint.
'''
pass
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