forked from cockroachdb/cockroach
/
keys.go
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/
keys.go
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// Copyright 2014 The Cockroach 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. See the AUTHORS file
// for names of contributors.
//
// Author: Spencer Kimball (spencer.kimball@gmail.com)
package gossip
import "strconv"
// Constants for gossip keys.
const (
// KeyClusterID is the unique UUID for this Cockroach cluster.
// The value is a string UUID for the cluster.
KeyClusterID = "cluster-id"
// KeyConfigAccounting is the accounting configuration map.
KeyConfigAccounting = "accounting"
// KeyConfigPermission is the permission configuration map.
KeyConfigPermission = "permissions"
// KeyConfigZone is the zone configuration map.
KeyConfigZone = "zones"
// KeyMaxAvailCapacityPrefix is the key prefix for gossiping available
// store capacity. The suffix is composed of:
// <datacenter>-<hex node ID>-<hex store ID>. The value is a
// storage.StoreDescriptor struct.
KeyMaxAvailCapacityPrefix = "max-avail-capacity-"
// KeyNodeCount is the count of gossip nodes in the network. The
// value is an int64 containing the count of nodes in the cluster.
// TODO(spencer): should remove this and instead just count the
// number of node ids being gossiped.
KeyNodeCount = "node-count"
// KeyNodeIDPrefix is the key prefix for gossiping node id
// addresses. The actual key is suffixed with the hexadecimal
// representation of the node id and the value is the host:port
// string address of the node. E.g. node-1bfa: fwd56.sjcb1:24001
KeyNodeIDPrefix = "node-"
// KeySentinel is a key for gossip which must not expire or else the
// node considers itself partitioned and will retry with bootstrap hosts.
KeySentinel = KeyClusterID
// KeyFirstRangeMetadata is the metadata for the "first" range. The
// "first" range contains the meta1 key range, the first level of
// the bi-level key addressing scheme. The value is a slice of
// storage.Replica structs.
KeyFirstRangeMetadata = "first-range"
)
// MakeNodeIDGossipKey returns the gossip key for node ID info.
func MakeNodeIDGossipKey(nodeID int32) string {
return KeyNodeIDPrefix + strconv.FormatInt(int64(nodeID), 16)
}