-
Notifications
You must be signed in to change notification settings - Fork 104
/
sys_health.go
188 lines (163 loc) · 5 KB
/
sys_health.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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package http
import (
"context"
"encoding/json"
"fmt"
"net/http"
"strconv"
"time"
"github.com/hashicorp/go-secure-stdlib/parseutil"
"github.com/openbao/openbao/sdk/v2/helper/consts"
"github.com/openbao/openbao/vault"
"github.com/openbao/openbao/version"
)
func handleSysHealth(core *vault.Core) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.Method {
case "GET":
handleSysHealthGet(core, w, r)
case "HEAD":
handleSysHealthHead(core, w, r)
default:
respondError(w, http.StatusMethodNotAllowed, nil)
}
})
}
func fetchStatusCode(r *http.Request, field string) (int, bool, bool) {
var err error
statusCode := http.StatusOK
if statusCodeStr, statusCodeOk := r.URL.Query()[field]; statusCodeOk {
statusCode, err = strconv.Atoi(statusCodeStr[0])
if err != nil || len(statusCodeStr) < 1 {
return http.StatusBadRequest, false, false
}
return statusCode, true, true
}
return statusCode, false, true
}
func handleSysHealthGet(core *vault.Core, w http.ResponseWriter, r *http.Request) {
code, body, err := getSysHealth(core, r)
if err != nil {
core.Logger().Error("error checking health", "error", err)
respondError(w, code, nil)
return
}
if body == nil {
respondError(w, code, nil)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(code)
// Generate the response
enc := json.NewEncoder(w)
enc.Encode(body)
}
func handleSysHealthHead(core *vault.Core, w http.ResponseWriter, r *http.Request) {
code, body, _ := getSysHealth(core, r)
if body != nil {
w.Header().Set("Content-Type", "application/json")
}
w.WriteHeader(code)
}
func getSysHealth(core *vault.Core, r *http.Request) (int, *HealthResponse, error) {
var err error
// Check if being a standby is allowed for the purpose of a 200 OK
standbyOKStr, standbyOK := r.URL.Query()["standbyok"]
if standbyOK {
standbyOK, err = parseutil.ParseBool(standbyOKStr[0])
if err != nil {
return http.StatusBadRequest, nil, fmt.Errorf("bad value for standbyok parameter: %w", err)
}
}
uninitCode := http.StatusNotImplemented
if code, found, ok := fetchStatusCode(r, "uninitcode"); !ok {
return http.StatusBadRequest, nil, nil
} else if found {
uninitCode = code
}
sealedCode := http.StatusServiceUnavailable
if code, found, ok := fetchStatusCode(r, "sealedcode"); !ok {
return http.StatusBadRequest, nil, nil
} else if found {
sealedCode = code
}
standbyCode := http.StatusTooManyRequests // Consul warning code
if code, found, ok := fetchStatusCode(r, "standbycode"); !ok {
return http.StatusBadRequest, nil, nil
} else if found {
standbyCode = code
}
activeCode := http.StatusOK
if code, found, ok := fetchStatusCode(r, "activecode"); !ok {
return http.StatusBadRequest, nil, nil
} else if found {
activeCode = code
}
ctx := context.Background()
// Check system status
sealed := core.Sealed()
standby := core.StandbyStates()
var replicationState consts.ReplicationState
if standby {
replicationState = core.ActiveNodeReplicationState()
} else {
replicationState = core.ReplicationState()
}
init, err := core.Initialized(ctx)
if err != nil {
return http.StatusInternalServerError, nil, err
}
// Determine the status code
code := activeCode
switch {
case !init:
code = uninitCode
case sealed:
code = sealedCode
case standby:
if !standbyOK {
code = standbyCode
}
}
// Fetch the local cluster name and identifier
var clusterName, clusterID string
if !sealed {
cluster, err := core.Cluster(ctx)
if err != nil {
return http.StatusInternalServerError, nil, err
}
if cluster == nil {
return http.StatusInternalServerError, nil, fmt.Errorf("failed to fetch cluster details")
}
clusterName = cluster.Name
clusterID = cluster.ID
}
// Format the body
body := &HealthResponse{
Initialized: init,
Sealed: sealed,
Standby: standby,
ReplicationPerformanceMode: replicationState.GetPerformanceString(),
ReplicationDRMode: replicationState.GetDRString(),
ServerTimeUTC: time.Now().UTC().Unix(),
Version: version.GetVersion().VersionNumber(),
ClusterName: clusterName,
ClusterID: clusterID,
}
return code, body, nil
}
type HealthResponse struct {
Initialized bool `json:"initialized"`
Sealed bool `json:"sealed"`
Standby bool `json:"standby"`
PerformanceStandby bool `json:"performance_standby"`
ReplicationPerformanceMode string `json:"replication_performance_mode"`
ReplicationDRMode string `json:"replication_dr_mode"`
ServerTimeUTC int64 `json:"server_time_utc"`
Version string `json:"version"`
ClusterName string `json:"cluster_name,omitempty"`
ClusterID string `json:"cluster_id,omitempty"`
LastWAL uint64 `json:"last_wal,omitempty"`
}