/
util.go
85 lines (68 loc) · 2.43 KB
/
util.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
// mongodb_exporter
// Copyright (C) 2023 Percona LLC
//
// 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 util
import (
"context"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/x/mongo/driver/topology"
"github.com/percona/mongodb_exporter/internal/proto"
)
const (
ErrNotYetInitialized = int32(94)
ErrNoReplicationEnabled = int32(76)
ErrNotPrimaryOrSecondary = int32(13436)
)
func MyState(ctx context.Context, client *mongo.Client) (int, error) {
var ms proto.MyState
err := client.Database("admin").RunCommand(ctx, bson.M{"getDiagnosticData": 1}).Decode(&ms)
if err != nil {
return 0, err
}
return ms.Data.ReplicasetGetStatus.MyState, nil
}
func ReplicasetConfig(ctx context.Context, client *mongo.Client) (*proto.ReplicasetConfig, error) {
var rs proto.ReplicasetConfig
if err := client.Database("admin").RunCommand(ctx, bson.M{"replSetGetConfig": 1}).Decode(&rs); err != nil {
return nil, err
}
return &rs, nil
}
func IsReplicationNotEnabledError(err mongo.CommandError) bool {
return err.Code == ErrNotYetInitialized || err.Code == ErrNoReplicationEnabled ||
err.Code == ErrNotPrimaryOrSecondary
}
func ClusterID(ctx context.Context, client *mongo.Client) (string, error) {
var cv proto.ConfigVersion
if err := client.Database("config").Collection("version").FindOne(ctx, bson.M{}).Decode(&cv); err == nil {
return cv.ClusterID.Hex(), nil
}
var si proto.ShardIdentity
filter := bson.M{"_id": "shardIdentity"}
if err := client.Database("admin").Collection("system.version").FindOne(ctx, filter).Decode(&si); err == nil {
return si.ClusterID.Hex(), nil
}
rc, err := ReplicasetConfig(ctx, client)
if err != nil {
if e, ok := err.(mongo.CommandError); ok && IsReplicationNotEnabledError(e) {
return "", nil
}
if _, ok := err.(topology.ServerSelectionError); ok {
return "", nil
}
return "", err
}
return rc.Config.Settings.ReplicaSetID.Hex(), nil
}