-
Notifications
You must be signed in to change notification settings - Fork 7
/
main.go
161 lines (137 loc) · 4.01 KB
/
main.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
package main
import (
"context"
"log"
"net/http"
_ "net/http/pprof" // for pprof
"os"
"os/signal"
"time"
execpb "github.com/criyle/go-judge/pb"
demopb "github.com/criyle/go-judger-demo/pb"
grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
grpc_zap "github.com/grpc-ecosystem/go-grpc-middleware/logging/zap"
grpc_prometheus "github.com/grpc-ecosystem/go-grpc-prometheus"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/credentials/insecure"
)
const (
envDemoServerURL = "DEMO_SERVER"
envExecServerURL = "EXEC_SERVER"
envRelease = "RELEASE"
envToken = "TOKEN"
defaultDemoServerURL = "localhost:5081"
defaultExecServerURL = "localhost:5051"
)
const (
memoryLimit = 256 << 20 // 256m
runDir = "run"
pathEnv = "PATH=/usr/local/bin:/usr/bin:/bin"
)
var env = []string{
pathEnv,
"HOME=/tmp",
}
var (
taskHist = prometheus.NewHistogramVec(prometheus.HistogramOpts{
Name: "judger_task_execute_time_seconds",
Help: "Time for whole processed case",
Buckets: prometheus.ExponentialBuckets(time.Millisecond.Seconds(), 1.4, 30), // 1 ms -> 10s
}, []string{"status"})
taskSummry = prometheus.NewSummaryVec(prometheus.SummaryOpts{
Name: "judger_task_execute_time",
Help: "Summary for the whole process case time",
Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
}, []string{"status"})
)
var logger *zap.Logger
func init() {
prometheus.MustRegister(taskHist, taskSummry)
}
func main() {
_, release := os.LookupEnv(envRelease)
var err error
if release {
logger, _ = zap.NewProduction()
} else {
config := zap.NewDevelopmentConfig()
config.EncoderConfig.EncodeLevel = zapcore.CapitalColorLevelEncoder
logger, err = config.Build()
}
if err != nil {
log.Fatalln("init logger", err)
}
// collect metrics
go func() {
http.Handle("/metrics", promhttp.Handler())
http.ListenAndServe(":2112", nil)
}()
token := os.Getenv(envToken)
execServer := defaultExecServerURL
if e := os.Getenv(envExecServerURL); e != "" {
execServer = e
}
execClient := createExecClient(execServer, token)
demoServer := defaultDemoServerURL
if e := os.Getenv(envDemoServerURL); e != "" {
demoServer = e
}
demoClient := createDemoClient(demoServer, token)
j := newJudger(execClient, demoClient)
j.Start()
sig := make(chan os.Signal, 1)
signal.Notify(sig, os.Interrupt)
<-sig
log.Println("interrupted")
}
func createExecClient(execServer, token string) execpb.ExecutorClient {
conn, err := createGRPCConnection(execServer, token)
if err != nil {
log.Fatalln("client", err)
}
return execpb.NewExecutorClient(conn)
}
func createDemoClient(execServer, token string) demopb.DemoBackendClient {
conn, err := createGRPCConnection(execServer, token)
if err != nil {
log.Fatalln("client", err)
}
return demopb.NewDemoBackendClient(conn)
}
func createGRPCConnection(addr, token string) (*grpc.ClientConn, error) {
opts := []grpc.DialOption{
grpc.WithTransportCredentials(insecure.NewCredentials()),
grpc.WithUnaryInterceptor(grpc_middleware.ChainUnaryClient(
grpc_prometheus.UnaryClientInterceptor,
grpc_zap.UnaryClientInterceptor(logger),
)),
grpc.WithStreamInterceptor(
grpc_middleware.ChainStreamClient(
grpc_prometheus.StreamClientInterceptor,
grpc_zap.StreamClientInterceptor(logger),
))}
if token != "" {
opts = append(opts, grpc.WithPerRPCCredentials(newTokenAuth(token)))
}
return grpc.Dial(addr, opts...)
}
type tokenAuth struct {
token string
}
func newTokenAuth(token string) credentials.PerRPCCredentials {
return &tokenAuth{token: token}
}
// Return value is mapped to request headers.
func (t *tokenAuth) GetRequestMetadata(ctx context.Context, in ...string) (map[string]string, error) {
return map[string]string{
"authorization": "Bearer " + t.token,
}, nil
}
func (*tokenAuth) RequireTransportSecurity() bool {
return false
}