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import etcd3.etcdrpc as etcdrpc
import etcd3.utils as utils
_OPERATORS = {
etcdrpc.Compare.EQUAL: "==",
etcdrpc.Compare.NOT_EQUAL: "!=",
etcdrpc.Compare.LESS: "<",
etcdrpc.Compare.GREATER: ">"
}
class BaseCompare(object):
def __init__(self, key, range_end=None):
self.key = key
self.range_end = range_end
self.value = None
self.op = None
# TODO check other is of correct type for compare
# Version, Mod and Create can only be ints
def __eq__(self, other):
self.value = other
self.op = etcdrpc.Compare.EQUAL
return self
def __ne__(self, other):
self.value = other
self.op = etcdrpc.Compare.NOT_EQUAL
return self
def __lt__(self, other):
self.value = other
self.op = etcdrpc.Compare.LESS
return self
def __gt__(self, other):
self.value = other
self.op = etcdrpc.Compare.GREATER
return self
def __repr__(self):
if self.range_end is None:
keys = self.key
else:
keys = "[{}, {})".format(self.key, self.range_end)
return "{}: {} {} '{}'".format(self.__class__, keys,
_OPERATORS.get(self.op),
self.value)
def build_message(self):
compare = etcdrpc.Compare()
compare.key = utils.to_bytes(self.key)
if self.range_end is not None:
compare.range_end = utils.to_bytes(self.range_end)
if self.op is None:
raise ValueError('op must be one of =, !=, < or >')
compare.result = self.op
self.build_compare(compare)
return compare
class Value(BaseCompare):
def build_compare(self, compare):
compare.target = etcdrpc.Compare.VALUE
compare.value = utils.to_bytes(self.value)
class Version(BaseCompare):
def build_compare(self, compare):
compare.target = etcdrpc.Compare.VERSION
compare.version = int(self.value)
class Create(BaseCompare):
def build_compare(self, compare):
compare.target = etcdrpc.Compare.CREATE
compare.create_revision = int(self.value)
class Mod(BaseCompare):
def build_compare(self, compare):
compare.target = etcdrpc.Compare.MOD
compare.mod_revision = int(self.value)
class Put(object):
def __init__(self, key, value, lease=None, prev_kv=False):
self.key = key
self.value = value
self.lease = lease
self.prev_kv = prev_kv
class Get(object):
def __init__(self, key, range_end=None):
self.key = key
self.range_end = range_end
class Delete(object):
def __init__(self, key, range_end=None, prev_kv=False):
self.key = key
self.range_end = range_end
self.prev_kv = prev_kv
class Txn(object):
def __init__(self, compare, success=None, failure=None):
self.compare = compare
self.success = success
self.failure = failure
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