forked from CiscoCloud/marathon-consul
/
web.go
130 lines (115 loc) · 3.14 KB
/
web.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
package main
import (
"errors"
"fmt"
"github.com/CiscoCloud/marathon-consul/consul"
"github.com/CiscoCloud/marathon-consul/events"
"github.com/CiscoCloud/marathon-consul/tasks"
log "github.com/Sirupsen/logrus"
"io/ioutil"
"net/http"
)
func HealthHandler(w http.ResponseWriter, r *http.Request) {
fmt.Fprintln(w, "OK")
}
type ForwardHandler struct {
consul consul.Consul
}
func (fh *ForwardHandler) Handle(w http.ResponseWriter, r *http.Request) {
body, err := ioutil.ReadAll(r.Body)
if err != nil || len(body) == 0 {
w.WriteHeader(500)
fmt.Fprintln(w, "could not read request body")
return
}
eventType, err := events.EventType(body)
if err != nil {
w.WriteHeader(500)
fmt.Fprintln(w, err.Error())
return
}
switch eventType {
case "api_post_event", "deployment_info":
log.WithField("eventType", eventType).Info("handling event")
fh.HandleAppEvent(w, body)
case "app_terminated_event":
log.WithField("eventType", "app_terminated_event").Info("handling event")
fh.HandleTerminationEvent(w, body)
case "status_update_event":
log.WithField("eventType", "status_update_event").Info("handling event")
fh.HandleStatusEvent(w, body)
default:
log.WithField("eventType", eventType).Info("not handling event")
w.WriteHeader(200)
fmt.Fprintf(w, "cannot handle %s\n", eventType)
}
log.Debug(string(body))
}
func (fh *ForwardHandler) HandleAppEvent(w http.ResponseWriter, body []byte) {
event, err := events.ParseEvent(body)
if err != nil {
w.WriteHeader(500)
fmt.Fprintln(w, err.Error())
log.Printf("[ERROR] body generated error: %s", err.Error())
return
}
resp := ""
respCode := 200
for _, app := range event.Apps() {
err = fh.consul.UpdateApp(app)
if err != nil {
resp += err.Error() + "\n"
log.Printf("[ERROR] response generated error: %s", err.Error())
respCode = 500
}
}
if resp == "" {
resp = "OK\n"
}
w.WriteHeader(respCode)
fmt.Fprint(w, resp)
}
func (fh *ForwardHandler) HandleTerminationEvent(w http.ResponseWriter, body []byte) {
event, err := events.ParseEvent(body)
if err != nil {
w.WriteHeader(500)
fmt.Fprintln(w, err.Error())
log.Printf("[ERROR] body generated error: %s", err.Error())
return
}
// app_terminated_event only has one app in it, so we will just take care of
// it instead of looping
err = fh.consul.DeleteApp(event.Apps()[0])
if err != nil {
w.WriteHeader(500)
fmt.Fprintln(w, err.Error())
log.Printf("[ERROR] response generated error: %s", err.Error())
} else {
w.WriteHeader(200)
fmt.Fprintln(w, "OK")
}
}
func (fh *ForwardHandler) HandleStatusEvent(w http.ResponseWriter, body []byte) {
task, err := tasks.ParseTask(body)
if err != nil {
w.WriteHeader(500)
fmt.Fprintln(w, err.Error())
log.Printf("[ERROR] body generated error: %s", err.Error())
return
}
switch task.TaskStatus {
case "TASK_FINISHED", "TASK_FAILED", "TASK_KILLED", "TASK_LOST":
err = fh.consul.DeleteTask(task)
case "TASK_STAGING", "TASK_STARTING", "TASK_RUNNING":
err = fh.consul.UpdateTask(task)
default:
err = errors.New("unknown task status")
}
if err != nil {
w.WriteHeader(500)
fmt.Fprintln(w, err.Error())
} else {
w.WriteHeader(200)
fmt.Fprintln(w, "OK")
}
}