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https://github.com/etcd-io/etcd.git
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This introduces two new concepts: the cluster and the member. Members are logical etcd instances that have a name, raft ID, and a list of peer and client addresses. A cluster is made up of a list of members.
44 lines
843 B
Go
44 lines
843 B
Go
package etcdserver
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import (
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"crypto/sha1"
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"encoding/binary"
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"path"
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"sort"
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"strconv"
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)
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const machineKVPrefix = "/_etcd/machines/"
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type Member struct {
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ID int64
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Name string
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// TODO(philips): ensure these are URLs
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PeerURLs []string
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ClientURLs []string
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}
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// newMember creates a Member without an ID and generates one based on the
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// name, peer URLs. This is used for bootstrapping.
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func newMember(name string, peerURLs []string) *Member {
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sort.Strings(peerURLs)
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m := &Member{Name: name, PeerURLs: peerURLs}
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b := []byte(m.Name)
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for _, p := range m.PeerURLs {
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b = append(b, []byte(p)...)
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}
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hash := sha1.Sum(b)
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m.ID = int64(binary.BigEndian.Uint64(hash[:8]))
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if m.ID < 0 {
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m.ID = m.ID * -1
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}
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return m
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}
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func (m Member) storeKey() string {
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return path.Join(machineKVPrefix, strconv.FormatUint(uint64(m.ID), 16))
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}
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