| package manager |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| import ( |
| "github.com/apache/trafficcontrol/lib/go-util" |
| "github.com/apache/trafficcontrol/traffic_monitor/health" |
| "github.com/apache/trafficcontrol/traffic_monitor/peer" |
| "github.com/apache/trafficcontrol/traffic_monitor/threadsafe" |
| ) |
| |
| // StartDistributedPeerManager listens for distributed peer results and updates the localStates |
| // directly (because combining peerStates is unnecessary since these results are already combined |
| // among the distributed TM group they came from). |
| func StartDistributedPeerManager( |
| distributedPeerChan <-chan peer.Result, |
| localStates peer.CRStatesThreadsafe, |
| distributedPeerStates peer.CRStatesPeersThreadsafe, |
| events health.ThreadsafeEvents, |
| unpolledCaches threadsafe.UnpolledCaches, |
| ) { |
| go func() { |
| for distributedPeerResult := range distributedPeerChan { |
| compareDistributedPeerState(events, distributedPeerResult, distributedPeerStates) |
| distributedPeerStates.Set(distributedPeerResult) |
| for name, availability := range distributedPeerResult.PeerStates.Caches { |
| localStates.SetCache(name, availability) |
| } |
| if len(distributedPeerResult.Errors) == 0 { |
| unpolledCaches.SetRemotePolled(distributedPeerResult.PeerStates.Caches) |
| } |
| distributedPeerResult.PollFinished <- distributedPeerResult.PollID |
| } |
| }() |
| } |
| |
| func compareDistributedPeerState(events health.ThreadsafeEvents, result peer.Result, distributedPeerStates peer.CRStatesPeersThreadsafe) { |
| if result.Available != distributedPeerStates.GetPeerAvailability(result.ID) { |
| description := util.JoinErrsStr(result.Errors) |
| |
| if description == "" && result.Available { |
| description = "Distributed peer group is reachable" |
| } else if description == "" && !result.Available { |
| description = "Distributed peer group is unreachable" |
| } |
| |
| events.Add( |
| health.Event{ |
| Time: health.Time(result.Time), |
| Description: description, |
| Name: result.ID.String(), |
| Hostname: result.ID.String(), |
| Type: "DISTRIBUTED_PEER", |
| Available: result.Available}) |
| } |
| } |