-
Notifications
You must be signed in to change notification settings - Fork 43
/
http.go
105 lines (86 loc) · 2.75 KB
/
http.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
// Copyright 2021 Nitric Pty Ltd.
//
// 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.
// The Digital Ocean App Platform HTTP gateway plugin
package base_http
import (
"fmt"
"time"
"github.com/nitric-dev/membrane/pkg/triggers"
"github.com/nitric-dev/membrane/pkg/utils"
"github.com/nitric-dev/membrane/pkg/worker"
"github.com/nitric-dev/membrane/pkg/plugins/gateway"
"github.com/valyala/fasthttp"
)
type HttpMiddleware func(*fasthttp.RequestCtx, worker.Worker) bool
type BaseHttpGateway struct {
address string
server *fasthttp.Server
gateway.UnimplementedGatewayPlugin
// Middleware for handling events
// return bool will indicate whether to continue
// to the next (default) behaviour or not...
mw HttpMiddleware
}
func (s *BaseHttpGateway) httpHandler(pool worker.WorkerPool) func(ctx *fasthttp.RequestCtx) {
return func(ctx *fasthttp.RequestCtx) {
wrkr, err := pool.GetWorker()
if err != nil {
ctx.Error("Unable to get worker to handle request", 500)
return
}
if s.mw != nil {
if !s.mw(ctx, wrkr) {
// middleware has indicated that is has processed the request
// so we can exit here
return
}
}
httpTrigger := triggers.FromHttpRequest(ctx)
response, err := wrkr.HandleHttpRequest(httpTrigger)
if err != nil {
ctx.Error(fmt.Sprintf("Error handling HTTP Request: %v", err), 500)
return
}
if response.Header != nil {
response.Header.CopyTo(&ctx.Response.Header)
}
// Avoid content length header duplication
ctx.Response.Header.Del("Content-Length")
ctx.Response.SetStatusCode(response.StatusCode)
ctx.Response.SetBody(response.Body)
}
}
func (s *BaseHttpGateway) Start(pool worker.WorkerPool) error {
s.server = &fasthttp.Server{
IdleTimeout: time.Second * 1,
CloseOnShutdown: true,
Handler: s.httpHandler(pool),
}
return s.server.ListenAndServe(s.address)
}
func (s *BaseHttpGateway) Stop() error {
if s.server != nil {
return s.server.Shutdown()
}
return nil
}
// Create new HTTP gateway
// XXX: No External Args for function atm (currently the plugin loader does not pass any argument information)
func New(mw HttpMiddleware) (gateway.GatewayService, error) {
address := utils.GetEnv("GATEWAY_ADDRESS", ":9001")
return &BaseHttpGateway{
address: address,
mw: mw,
}, nil
}