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// Copyright 2016 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package api
import (
"github.com/coreos/etcd/etcdserver/membership"
"github.com/coreos/etcd/pkg/types"
"github.com/coreos/go-semver/semver"
)
// Cluster is an interface representing a collection of members in one etcd cluster.
type Cluster interface {
// ID returns the cluster ID
ID() types.ID
// ClientURLs returns an aggregate set of all URLs on which this
// cluster is listening for client requests
ClientURLs() []string
// Members returns a slice of members sorted by their ID
Members() []*membership.Member
// Member retrieves a particular member based on ID, or nil if the
// member does not exist in the cluster
Member(id types.ID) *membership.Member
// IsIDRemoved checks whether the given ID has been removed from this
// cluster at some point in the past
IsIDRemoved(id types.ID) bool
// Version is the cluster-wide minimum major.minor version.
Version() *semver.Version
}
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