github.com/elfadel/cilium@v1.6.12/pkg/health/server/health.go (about) 1 // Copyright 2017-2019 Authors of Cilium 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package server 16 17 import ( 18 "fmt" 19 "strconv" 20 21 healthModels "github.com/cilium/cilium/api/v1/health/models" 22 . "github.com/cilium/cilium/api/v1/health/server/restapi" 23 ciliumModels "github.com/cilium/cilium/api/v1/models" 24 "github.com/cilium/cilium/pkg/api" 25 "github.com/cilium/cilium/pkg/client" 26 27 "github.com/c9s/goprocinfo/linux" 28 "github.com/go-openapi/runtime/middleware" 29 ) 30 31 func dumpLoad() (*healthModels.LoadResponse, error) { 32 load, err := linux.ReadLoadAvg("/proc/loadavg") 33 if err != nil { 34 return nil, fmt.Errorf("Failure getting /stat: %s", err.Error()) 35 } 36 return &healthModels.LoadResponse{ 37 Last1min: strconv.FormatFloat(load.Last1Min, 'f', 2, 64), 38 Last5min: strconv.FormatFloat(load.Last5Min, 'f', 2, 64), 39 Last15min: strconv.FormatFloat(load.Last15Min, 'f', 2, 64), 40 }, nil 41 } 42 43 type getHealthz struct { 44 *Server 45 } 46 47 // NewGetHealthzHandler handles health requests. 48 func NewGetHealthzHandler(s *Server) GetHealthzHandler { 49 return &getHealthz{Server: s} 50 } 51 52 func (h *getHealthz) getCiliumStatus() (*ciliumModels.StatusResponse, error) { 53 resp, err := h.Daemon.GetHealthz(nil) 54 if err != nil { 55 return nil, client.Hint(err) 56 } 57 return resp.Payload, nil 58 } 59 60 // Handle handles GET requests for /healthz . 61 func (h *getHealthz) Handle(params GetHealthzParams) middleware.Responder { 62 log.Debug("Handling request for /healthz") 63 64 ciliumStatus, err := h.getCiliumStatus() 65 if err != nil { 66 return api.Error(GetHealthzFailedCode, err) 67 } 68 load, err := dumpLoad() 69 if err != nil { 70 return api.Error(GetHealthzFailedCode, err) 71 } 72 73 sr := healthModels.HealthResponse{} 74 sr.Cilium = ciliumStatus 75 sr.Uptime = h.Server.DumpUptime() 76 sr.SystemLoad = load 77 return NewGetHealthzOK().WithPayload(&sr) 78 }