Initial commit
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commit
35956d981f
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.gitignore
vendored
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2
.gitignore
vendored
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|||||||
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/cmd/proxy/proxy
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||||||
|
/proxy
|
202
LICENSE
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202
LICENSE
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@ -0,0 +1,202 @@
|
|||||||
|
|
||||||
|
Apache License
|
||||||
|
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|
||||||
|
http://www.apache.org/licenses/
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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END OF TERMS AND CONDITIONS
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APPENDIX: How to apply the Apache License to your work.
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To apply the Apache License to your work, attach the following
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Copyright [yyyy] [name of copyright owner]
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Unless required by applicable law or agreed to in writing, software
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See the License for the specific language governing permissions and
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limitations under the License.
|
29
README.md
Normal file
29
README.md
Normal file
@ -0,0 +1,29 @@
|
|||||||
|
# Proxy
|
||||||
|
|
||||||
|
## Info
|
||||||
|
|
||||||
|
Proxy listen on URL: `http://${address}/proxy`
|
||||||
|
|
||||||
|
Flink's `module.yaml` example:
|
||||||
|
|
||||||
|
```yaml
|
||||||
|
kind: io.statefun.endpoints.v2/http
|
||||||
|
spec:
|
||||||
|
functions: proxy/*
|
||||||
|
urlPathTemplate: http://${address}/proxy
|
||||||
|
maxNumBatchRequests: 1
|
||||||
|
transport:
|
||||||
|
type: io.statefun.transports.v1/async
|
||||||
|
connect: 5s
|
||||||
|
call: 600s
|
||||||
|
payload_max_bytes: 52428800
|
||||||
|
|
||||||
|
```
|
||||||
|
|
||||||
|
## Run
|
||||||
|
|
||||||
|
### Environment variables
|
||||||
|
|
||||||
|
|Variable|Default|Description|
|
||||||
|
|:------:|:-----:|:---------:|
|
||||||
|
|STATEFUN_PROXY_DEBUG|""|Debug log level|
|
17
cmd/proxy/main.go
Normal file
17
cmd/proxy/main.go
Normal file
@ -0,0 +1,17 @@
|
|||||||
|
// Copyright 2022 Listware
|
||||||
|
|
||||||
|
package main
|
||||||
|
|
||||||
|
import (
|
||||||
|
"fmt"
|
||||||
|
"os"
|
||||||
|
|
||||||
|
"git.fg-tech.ru/listware/proxy/pkg/agent"
|
||||||
|
)
|
||||||
|
|
||||||
|
func main() {
|
||||||
|
if err := agent.Proxy.Run(os.Args); err != nil {
|
||||||
|
fmt.Println(err)
|
||||||
|
os.Exit(1)
|
||||||
|
}
|
||||||
|
}
|
31
go.mod
Normal file
31
go.mod
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@ -0,0 +1,31 @@
|
|||||||
|
module git.fg-tech.ru/listware/proxy
|
||||||
|
|
||||||
|
go 1.19
|
||||||
|
|
||||||
|
require (
|
||||||
|
git.fg-tech.ru/listware/cmdb v0.1.0
|
||||||
|
git.fg-tech.ru/listware/go-core v0.1.0
|
||||||
|
git.fg-tech.ru/listware/proto v0.1.1
|
||||||
|
github.com/gorilla/mux v1.8.0
|
||||||
|
github.com/urfave/cli/v2 v2.24.1
|
||||||
|
go.uber.org/zap v1.24.0
|
||||||
|
google.golang.org/protobuf v1.28.1
|
||||||
|
)
|
||||||
|
|
||||||
|
require (
|
||||||
|
github.com/apache/flink-statefun/statefun-sdk-go/v3 v3.2.0 // indirect
|
||||||
|
github.com/arangodb/go-driver v1.4.1 // indirect
|
||||||
|
github.com/arangodb/go-velocypack v0.0.0-20200318135517-5af53c29c67e // indirect
|
||||||
|
github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
|
||||||
|
github.com/golang/protobuf v1.5.2 // indirect
|
||||||
|
github.com/pkg/errors v0.9.1 // indirect
|
||||||
|
github.com/russross/blackfriday/v2 v2.1.0 // indirect
|
||||||
|
github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
|
||||||
|
go.uber.org/atomic v1.7.0 // indirect
|
||||||
|
go.uber.org/multierr v1.6.0 // indirect
|
||||||
|
golang.org/x/net v0.5.0 // indirect
|
||||||
|
golang.org/x/sys v0.4.0 // indirect
|
||||||
|
golang.org/x/text v0.6.0 // indirect
|
||||||
|
google.golang.org/genproto v0.0.0-20221118155620-16455021b5e6 // indirect
|
||||||
|
google.golang.org/grpc v1.52.1 // indirect
|
||||||
|
)
|
66
go.sum
Normal file
66
go.sum
Normal file
@ -0,0 +1,66 @@
|
|||||||
|
git.fg-tech.ru/listware/cmdb v0.1.0 h1:K4A8XI8X5nh975+m+LVea/kIa2hSQSXCnH3qVjDjOwk=
|
||||||
|
git.fg-tech.ru/listware/cmdb v0.1.0/go.mod h1:kke3p3xl6lPlqwSfmA+grlKhGX6zKXctjcbE1Pcs9Ik=
|
||||||
|
git.fg-tech.ru/listware/go-core v0.1.0 h1:ftwr4VjmFSHfCqPQFTi2rcpELVznYBUPmwRbKMm/OGQ=
|
||||||
|
git.fg-tech.ru/listware/go-core v0.1.0/go.mod h1:jKjqdeZUtlNoSFSSHSmiw0fAy4FWeYhLqqRvLU5K4t4=
|
||||||
|
git.fg-tech.ru/listware/proto v0.1.1 h1:CSqteAtgysiJe7+KtLOEXSIvxypmlJCKwQtla1d2v+A=
|
||||||
|
git.fg-tech.ru/listware/proto v0.1.1/go.mod h1:t5lyMTuX/if05HI/na9tJAlHCHHMdhdPLBTkhvscedQ=
|
||||||
|
github.com/apache/flink-statefun/statefun-sdk-go/v3 v3.2.0 h1:OfLhhWnnOfBUvzbQuhE7hCKJdlBW41nV3CfCF/q7UJs=
|
||||||
|
github.com/apache/flink-statefun/statefun-sdk-go/v3 v3.2.0/go.mod h1:uHiPJsi71a161NMH/ISkkSPIXenkcG9A2m+uhT8UlJ4=
|
||||||
|
github.com/arangodb/go-driver v1.4.1 h1:Jg0N7XKxiKwjswmAcMCnefWmt81KJEqybqRAGJDRWlo=
|
||||||
|
github.com/arangodb/go-driver v1.4.1/go.mod h1:UTtaxTUMmyPWzKc2dsWWOZzZ3yM6aHWxn/eubGa3YmQ=
|
||||||
|
github.com/arangodb/go-velocypack v0.0.0-20200318135517-5af53c29c67e h1:Xg+hGrY2LcQBbxd0ZFdbGSyRKTYMZCfBbw/pMJFOk1g=
|
||||||
|
github.com/arangodb/go-velocypack v0.0.0-20200318135517-5af53c29c67e/go.mod h1:mq7Shfa/CaixoDxiyAAc5jZ6CVBAyPaNQCGS7mkj4Ho=
|
||||||
|
github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
|
||||||
|
github.com/cpuguy83/go-md2man/v2 v2.0.2 h1:p1EgwI/C7NhT0JmVkwCD2ZBK8j4aeHQX2pMHHBfMQ6w=
|
||||||
|
github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
|
||||||
|
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||||
|
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
|
||||||
|
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||||
|
github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
|
||||||
|
github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
|
||||||
|
github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
|
||||||
|
github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
|
||||||
|
github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
|
||||||
|
github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
|
||||||
|
github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
|
||||||
|
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
|
||||||
|
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
|
||||||
|
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
|
||||||
|
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||||
|
github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
|
||||||
|
github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
|
||||||
|
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||||
|
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
|
||||||
|
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
|
||||||
|
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
|
||||||
|
github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
|
||||||
|
github.com/urfave/cli/v2 v2.24.1 h1:/QYYr7g0EhwXEML8jO+8OYt5trPnLHS0p3mrgExJ5NU=
|
||||||
|
github.com/urfave/cli/v2 v2.24.1/go.mod h1:GHupkWPMM0M/sj1a2b4wUrWBPzazNrIjouW6fmdJLxc=
|
||||||
|
github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 h1:bAn7/zixMGCfxrRTfdpNzjtPYqr8smhKouy9mxVdGPU=
|
||||||
|
github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673/go.mod h1:N3UwUGtsrSj3ccvlPHLoLsHnpR27oXr4ZE984MbSER8=
|
||||||
|
go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
|
||||||
|
go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
|
||||||
|
go.uber.org/goleak v1.1.11 h1:wy28qYRKZgnJTxGxvye5/wgWr1EKjmUDGYox5mGlRlI=
|
||||||
|
go.uber.org/multierr v1.6.0 h1:y6IPFStTAIT5Ytl7/XYmHvzXQ7S3g/IeZW9hyZ5thw4=
|
||||||
|
go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
|
||||||
|
go.uber.org/zap v1.24.0 h1:FiJd5l1UOLj0wCgbSE0rwwXHzEdAZS6hiiSnxJN/D60=
|
||||||
|
go.uber.org/zap v1.24.0/go.mod h1:2kMP+WWQ8aoFoedH3T2sq6iJ2yDWpHbP0f6MQbS9Gkg=
|
||||||
|
golang.org/x/net v0.5.0 h1:GyT4nK/YDHSqa1c4753ouYCDajOYKTja9Xb/OHtgvSw=
|
||||||
|
golang.org/x/net v0.5.0/go.mod h1:DivGGAXEgPSlEBzxGzZI+ZLohi+xUj054jfeKui00ws=
|
||||||
|
golang.org/x/sys v0.4.0 h1:Zr2JFtRQNX3BCZ8YtxRE9hNJYC8J6I1MVbMg6owUp18=
|
||||||
|
golang.org/x/sys v0.4.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
||||||
|
golang.org/x/text v0.6.0 h1:3XmdazWV+ubf7QgHSTWeykHOci5oeekaGJBLkrkaw4k=
|
||||||
|
golang.org/x/text v0.6.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
|
||||||
|
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||||
|
google.golang.org/genproto v0.0.0-20221118155620-16455021b5e6 h1:a2S6M0+660BgMNl++4JPlcAO/CjkqYItDEZwkoDQK7c=
|
||||||
|
google.golang.org/genproto v0.0.0-20221118155620-16455021b5e6/go.mod h1:rZS5c/ZVYMaOGBfO68GWtjOw/eLaZM1X6iVtgjZ+EWg=
|
||||||
|
google.golang.org/grpc v1.52.1 h1:2NpOPk5g5Xtb0qebIEs7hNIa++PdtZLo2AQUpc1YnSU=
|
||||||
|
google.golang.org/grpc v1.52.1/go.mod h1:pu6fVzoFb+NBYNAvQL08ic+lvB2IojljRYuun5vorUY=
|
||||||
|
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
|
||||||
|
google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
|
||||||
|
google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
|
||||||
|
google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
|
||||||
|
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||||
|
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||||
|
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
|
||||||
|
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
|
48
pkg/agent/proxy.go
Normal file
48
pkg/agent/proxy.go
Normal file
@ -0,0 +1,48 @@
|
|||||||
|
// Copyright 2022 Listware
|
||||||
|
|
||||||
|
package agent
|
||||||
|
|
||||||
|
import (
|
||||||
|
"git.fg-tech.ru/listware/proxy/pkg/proxy"
|
||||||
|
"github.com/urfave/cli/v2"
|
||||||
|
)
|
||||||
|
|
||||||
|
var Proxy = &cli.App{
|
||||||
|
Name: "statefun-proxy",
|
||||||
|
Usage: "Flink's Stateful Functions Proxy",
|
||||||
|
Version: "v0.0.1",
|
||||||
|
Flags: []cli.Flag{
|
||||||
|
&cli.StringSliceFlag{
|
||||||
|
Name: "broker",
|
||||||
|
Usage: "Kafka broker URLs",
|
||||||
|
Value: cli.NewStringSlice("0.0.0.0:19092"),
|
||||||
|
EnvVars: []string{"KAFKA_BROKER"},
|
||||||
|
},
|
||||||
|
&cli.StringFlag{
|
||||||
|
Name: "listen",
|
||||||
|
Aliases: []string{"l"},
|
||||||
|
Usage: "Address to listen on",
|
||||||
|
Value: ":8801",
|
||||||
|
EnvVars: []string{"STATEFUN_PROXY_ADDR"},
|
||||||
|
},
|
||||||
|
&cli.BoolFlag{
|
||||||
|
Name: "debug",
|
||||||
|
Aliases: []string{"d"},
|
||||||
|
Usage: "Debug log level",
|
||||||
|
Value: false,
|
||||||
|
EnvVars: []string{"STATEFUN_PROXY_DEBUG"},
|
||||||
|
},
|
||||||
|
},
|
||||||
|
Action: func(ctx *cli.Context) (err error) {
|
||||||
|
p, err := proxy.New(proxy.WithAddr(ctx.String("listen")))
|
||||||
|
if err != nil {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
if ctx.Bool("debug") {
|
||||||
|
if err = p.Configure(proxy.WithDebug()); err != nil {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return p.Run(ctx.Context)
|
||||||
|
},
|
||||||
|
}
|
11
pkg/module/module.go
Normal file
11
pkg/module/module.go
Normal file
@ -0,0 +1,11 @@
|
|||||||
|
// Copyright 2022 Listware
|
||||||
|
|
||||||
|
package module
|
||||||
|
|
||||||
|
import (
|
||||||
|
"git.fg-tech.ru/listware/go-core/pkg/module"
|
||||||
|
)
|
||||||
|
|
||||||
|
func New(namespace string, opts ...module.Opt) module.Module {
|
||||||
|
return module.New(namespace, opts...)
|
||||||
|
}
|
27
pkg/proxy/opts.go
Normal file
27
pkg/proxy/opts.go
Normal file
@ -0,0 +1,27 @@
|
|||||||
|
// Copyright 2022 Listware
|
||||||
|
|
||||||
|
package proxy
|
||||||
|
|
||||||
|
import (
|
||||||
|
"go.uber.org/zap"
|
||||||
|
)
|
||||||
|
|
||||||
|
type Opt func(*Proxy) error
|
||||||
|
|
||||||
|
func WithAddr(addr string) Opt {
|
||||||
|
return func(p *Proxy) (err error) {
|
||||||
|
p.addr = addr
|
||||||
|
return
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func WithDebug() Opt {
|
||||||
|
return func(p *Proxy) (err error) {
|
||||||
|
l, err := zap.NewDevelopment()
|
||||||
|
if err != nil {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
p.log = l.Sugar()
|
||||||
|
return
|
||||||
|
}
|
||||||
|
}
|
212
pkg/proxy/proxy.go
Normal file
212
pkg/proxy/proxy.go
Normal file
@ -0,0 +1,212 @@
|
|||||||
|
// Copyright 2022 Listware
|
||||||
|
|
||||||
|
package proxy
|
||||||
|
|
||||||
|
import (
|
||||||
|
"bytes"
|
||||||
|
"context"
|
||||||
|
"encoding/json"
|
||||||
|
"fmt"
|
||||||
|
"io"
|
||||||
|
"net/http"
|
||||||
|
"net/http/httputil"
|
||||||
|
"net/url"
|
||||||
|
|
||||||
|
"git.fg-tech.ru/listware/cmdb/pkg/cmdb/qdsl"
|
||||||
|
"git.fg-tech.ru/listware/proto/sdk/pbflink"
|
||||||
|
"git.fg-tech.ru/listware/proto/sdk/pbtypes"
|
||||||
|
"github.com/gorilla/mux"
|
||||||
|
"go.uber.org/zap"
|
||||||
|
"google.golang.org/protobuf/proto"
|
||||||
|
)
|
||||||
|
|
||||||
|
const (
|
||||||
|
forwardedHeader = "X-Forwarded-Host"
|
||||||
|
)
|
||||||
|
|
||||||
|
var (
|
||||||
|
noopFromFunction = &pbflink.FromFunction{
|
||||||
|
Response: &pbflink.FromFunction_InvocationResult{
|
||||||
|
InvocationResult: &pbflink.FromFunction_InvocationResponse{},
|
||||||
|
},
|
||||||
|
}
|
||||||
|
)
|
||||||
|
|
||||||
|
type Proxy struct {
|
||||||
|
addr string
|
||||||
|
reverseProxy *httputil.ReverseProxy
|
||||||
|
|
||||||
|
log *zap.SugaredLogger
|
||||||
|
|
||||||
|
ctx context.Context
|
||||||
|
cancel context.CancelFunc
|
||||||
|
|
||||||
|
noopData []byte
|
||||||
|
}
|
||||||
|
|
||||||
|
func New(opts ...Opt) (p *Proxy, err error) {
|
||||||
|
l, err := zap.NewProduction()
|
||||||
|
if err != nil {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
p = &Proxy{
|
||||||
|
log: l.Sugar(),
|
||||||
|
}
|
||||||
|
p.reverseProxy = &httputil.ReverseProxy{
|
||||||
|
Director: p.directorFn,
|
||||||
|
ModifyResponse: p.modifyResponse,
|
||||||
|
ErrorHandler: p.errorHandler,
|
||||||
|
}
|
||||||
|
|
||||||
|
if p.noopData, err = proto.Marshal(noopFromFunction); err != nil {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
return p, p.Configure(opts...)
|
||||||
|
}
|
||||||
|
|
||||||
|
func (p *Proxy) Configure(opts ...Opt) (err error) {
|
||||||
|
for _, opt := range opts {
|
||||||
|
if err = opt(p); err != nil {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
func (p *Proxy) Run(ctx context.Context) (err error) {
|
||||||
|
r := mux.NewRouter()
|
||||||
|
r.HandleFunc("/{type}", handler(p.reverseProxy))
|
||||||
|
|
||||||
|
srv := &http.Server{
|
||||||
|
Addr: p.addr,
|
||||||
|
Handler: r,
|
||||||
|
}
|
||||||
|
|
||||||
|
p.ctx, p.cancel = context.WithCancel(ctx)
|
||||||
|
|
||||||
|
p.log.Debugf("listen & serve on: %s", p.addr)
|
||||||
|
|
||||||
|
go func() {
|
||||||
|
if err = srv.ListenAndServe(); err != nil {
|
||||||
|
p.log.Errorf("failed: %s", err.Error())
|
||||||
|
p.cancel()
|
||||||
|
}
|
||||||
|
}()
|
||||||
|
<-p.ctx.Done()
|
||||||
|
if err != nil {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
return srv.Shutdown(p.ctx)
|
||||||
|
}
|
||||||
|
|
||||||
|
func (p *Proxy) directorFn(r *http.Request) {
|
||||||
|
if r.Method != http.MethodPost {
|
||||||
|
p.log.Errorf("only '%s' method allowed: %s", http.MethodPost, r.Method)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
functionType := mux.Vars(r)["type"]
|
||||||
|
|
||||||
|
body, err := io.ReadAll(r.Body)
|
||||||
|
if err != nil {
|
||||||
|
p.log.Error(err.Error())
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
var toFunction pbflink.ToFunction
|
||||||
|
if err = proto.Unmarshal(body, &toFunction); err != nil {
|
||||||
|
p.log.Error(err.Error())
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
batch := toFunction.GetInvocation()
|
||||||
|
tgt := batch.GetTarget()
|
||||||
|
|
||||||
|
if r.URL, err = p.queryURL(functionType, tgt.GetId()); err != nil {
|
||||||
|
p.log.Error(err.Error())
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
if body, err = proto.Marshal(&toFunction); err != nil {
|
||||||
|
p.log.Error(err.Error())
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
r.Body = io.NopCloser(bytes.NewBuffer(body))
|
||||||
|
r.ContentLength = int64(len(body))
|
||||||
|
|
||||||
|
r.Header.Add(forwardedHeader, r.Host)
|
||||||
|
r.Host = r.URL.Host
|
||||||
|
}
|
||||||
|
|
||||||
|
func (p *Proxy) modifyResponse(r *http.Response) (err error) {
|
||||||
|
if r.StatusCode != http.StatusOK {
|
||||||
|
return p.noopResponse(r)
|
||||||
|
}
|
||||||
|
|
||||||
|
body, err := io.ReadAll(r.Body)
|
||||||
|
if err != nil {
|
||||||
|
p.log.Error(err.Error())
|
||||||
|
return p.noopResponse(r)
|
||||||
|
}
|
||||||
|
|
||||||
|
var fromFunction pbflink.FromFunction
|
||||||
|
if err = proto.Unmarshal(body, &fromFunction); err != nil {
|
||||||
|
return p.noopResponse(r)
|
||||||
|
}
|
||||||
|
|
||||||
|
r.Body = io.NopCloser(bytes.NewBuffer(body))
|
||||||
|
r.ContentLength = int64(len(body))
|
||||||
|
r.Header.Set("Content-Length", fmt.Sprint(r.ContentLength))
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
func (p *Proxy) errorHandler(w http.ResponseWriter, r *http.Request, err error) {
|
||||||
|
w.WriteHeader(http.StatusOK)
|
||||||
|
w.Write(p.noopData)
|
||||||
|
}
|
||||||
|
|
||||||
|
func (p *Proxy) noopResponse(r *http.Response) (err error) {
|
||||||
|
r.Body = io.NopCloser(bytes.NewBuffer(p.noopData))
|
||||||
|
r.ContentLength = int64(len(p.noopData))
|
||||||
|
r.StatusCode = http.StatusOK
|
||||||
|
|
||||||
|
r.Header.Del("X-Content-Type-Options")
|
||||||
|
|
||||||
|
r.Header.Set("Content-Length", fmt.Sprint(r.ContentLength))
|
||||||
|
r.Header.Set("Content-Type", "application/octet-stream")
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
// FIXME add r.URL to DNS instead cmdb qdsl
|
||||||
|
// r.Host = functionType
|
||||||
|
// functionType = from dns
|
||||||
|
func (p *Proxy) queryURL(functionType, id string) (u *url.URL, err error) {
|
||||||
|
query := fmt.Sprintf("*[?@._id == '%s'?].%s", id, functionType)
|
||||||
|
|
||||||
|
elems, err := qdsl.Qdsl(p.ctx, query, qdsl.WithLink())
|
||||||
|
if err != nil {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
elemslen := len(elems)
|
||||||
|
if elemslen == 0 {
|
||||||
|
err = fmt.Errorf("unknown function implementation: %s", query)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
if elemslen > 1 {
|
||||||
|
err = fmt.Errorf("multiple implementation of function: %s", query)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
var link pbtypes.FunctionRoute
|
||||||
|
if err = json.Unmarshal(elems[0].Link, &link); err != nil {
|
||||||
|
return
|
||||||
|
}
|
||||||
|
return url.Parse(link.Url)
|
||||||
|
}
|
||||||
|
|
||||||
|
func handler(p *httputil.ReverseProxy) func(http.ResponseWriter, *http.Request) {
|
||||||
|
return func(w http.ResponseWriter, r *http.Request) {
|
||||||
|
p.ServeHTTP(w, r)
|
||||||
|
}
|
||||||
|
}
|
38
pkg/utils/reader.go
Normal file
38
pkg/utils/reader.go
Normal file
@ -0,0 +1,38 @@
|
|||||||
|
// Copyright 2022 Listware
|
||||||
|
|
||||||
|
package utils
|
||||||
|
|
||||||
|
import (
|
||||||
|
"bytes"
|
||||||
|
"io"
|
||||||
|
)
|
||||||
|
|
||||||
|
type reusableReader struct {
|
||||||
|
io.Reader
|
||||||
|
readBuf *bytes.Buffer
|
||||||
|
backBuf *bytes.Buffer
|
||||||
|
}
|
||||||
|
|
||||||
|
func ReusableReader(r io.Reader) io.Reader {
|
||||||
|
readBuf := bytes.Buffer{}
|
||||||
|
readBuf.ReadFrom(r) // error handling ignored for brevity
|
||||||
|
backBuf := bytes.Buffer{}
|
||||||
|
|
||||||
|
return reusableReader{
|
||||||
|
io.TeeReader(&readBuf, &backBuf),
|
||||||
|
&readBuf,
|
||||||
|
&backBuf,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func (r reusableReader) Read(p []byte) (int, error) {
|
||||||
|
n, err := r.Reader.Read(p)
|
||||||
|
if err == io.EOF {
|
||||||
|
r.reset()
|
||||||
|
}
|
||||||
|
return n, err
|
||||||
|
}
|
||||||
|
|
||||||
|
func (r reusableReader) reset() {
|
||||||
|
io.Copy(r.readBuf, r.backBuf) // nolint: errcheck
|
||||||
|
}
|
Loading…
Reference in New Issue
Block a user