forked from uber/kraken
/
peer_context.go
64 lines (55 loc) · 1.96 KB
/
peer_context.go
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// Copyright (c) 2016-2019 Uber Technologies, Inc.
//
// 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 core
import "errors"
// PeerContext defines the context a peer runs within, namely the fields which
// are used to identify each peer.
type PeerContext struct {
// IP and Port specify the address the peer will announce itself as. Note,
// this is distinct from the address a peer's Scheduler will listen on
// because the peer may be running within a container and the address it
// listens on is mapped to a different ip/port outside of the container.
IP string `json:"ip"`
Port int `json:"port"`
// PeerID the peer will identify itself as.
PeerID PeerID `json:"peer_id"`
// Zone is the zone the peer is running within.
Zone string `json:"zone"`
// Cluster is the Kraken cluster the peer is running within.
Cluster string `json:"cluster"`
// Origin indicates whether the peer is an origin server or not.
Origin bool `json:"origin"`
}
// NewPeerContext creates a new PeerContext.
func NewPeerContext(
f PeerIDFactory, zone, cluster, ip string, port int, origin bool) (PeerContext, error) {
if ip == "" {
return PeerContext{}, errors.New("no ip supplied")
}
if port == 0 {
return PeerContext{}, errors.New("no port supplied")
}
peerID, err := f.GeneratePeerID(ip, port)
if err != nil {
return PeerContext{}, err
}
return PeerContext{
IP: ip,
Port: port,
PeerID: peerID,
Zone: zone,
Cluster: cluster,
Origin: origin,
}, nil
}