-
Notifications
You must be signed in to change notification settings - Fork 602
/
client.go
65 lines (56 loc) · 1.81 KB
/
client.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
// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"). You may
// not use this file except in compliance with the License. A copy of the
// License is located at
//
// http://aws.amazon.com/apache2.0/
//
// or in the "license" file accompanying this file. This file 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 appnet
import (
"context"
"fmt"
"net"
"net/http"
prometheus "github.com/prometheus/client_model/go"
)
type appnetClientCtxKey int
// AppnetClient is an interface with customized Appnet client that
// implements the GetStats and DrainInboundConnections
type AppNetClient interface {
GetStats(adminSocketPath string, statsRequest string) (map[string]*prometheus.MetricFamily, error)
DrainInboundConnections(adminSocketPath string, drainRequest string) error
}
type AppNetAgentClient struct {
udsHttpClient http.Client
AppNetClient
}
const (
udsAddressKey appnetClientCtxKey = iota
unixNetworkName = "unix"
)
// Client retrieves the singleton Appnet client
func CreateClient() *AppNetAgentClient {
client := AppNetAgentClient{
udsHttpClient: http.Client{
Transport: &http.Transport{
DialContext: udsDialContext,
},
},
}
return &client
}
func udsDialContext(ctx context.Context, _, _ string) (net.Conn, error) {
udsAddress, ok := ctx.Value(udsAddressKey).(string)
if !ok {
return nil, fmt.Errorf("appnet client: Path to appnet admin socket was not a string")
}
if udsAddress == "" {
return nil, fmt.Errorf("appnet client: Path to appnet admin socket was blank")
}
return net.Dial(unixNetworkName, udsAddress)
}