Use env for config instead of flags
parent
a5dccb1210
commit
d4773c0c5e
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@ -3,12 +3,13 @@ FROM golang:1.11-rc-alpine as build
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RUN apk add --no-cache git=2.18.1-r0
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WORKDIR /src
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COPY go.mod go.sum *.go ./
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COPY go.mod go.sum .env *.go ./
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RUN go get -d -v ./...
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RUN CGO_ENABLED=0 go build -ldflags "-s -w"
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FROM scratch
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COPY --from=build /src/subscribe /subscribe
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COPY --from=build /src/.env /.env
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ENTRYPOINT ["/subscribe"]
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@ -2,6 +2,15 @@
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Client subscribe counterpart to backend-publish. Subscribe to receive the results of your requests to backend-publish in some weird extended streaming async HTTP-ish thing. Refer to ```backend-store```.
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## Environment Variables
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Supply environment variables by either exporting them or editing ```.env```.
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| ENV | Description | Default |
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| ---- | ----------- | ------- |
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| LISTEN | Host and port number to listen on | :8080 |
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| NATS | Host and port of nats | nats://localhost:4222 |
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## API
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```
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1
go.mod
1
go.mod
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@ -2,6 +2,7 @@ module subscribe
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require (
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github.com/golang/protobuf v1.2.1-0.20190205222052-c823c79ea157
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github.com/joho/godotenv v1.3.0
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github.com/julienschmidt/httprouter v1.2.0
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github.com/nats-io/gnatsd v1.4.1 // indirect
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github.com/nats-io/go-nats v1.7.0
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9
go.sum
9
go.sum
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@ -1,5 +1,7 @@
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github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
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github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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github.com/golang/protobuf v1.2.1-0.20190205222052-c823c79ea157 h1:SdQMHsZ18/XZCHuwt3IF+dvHgYTO2XMWZjv3XBKQqAI=
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github.com/golang/protobuf v1.2.1-0.20190205222052-c823c79ea157/go.mod h1:Qd/q+1AKNOZr9uGQzbzCmRO6sUih6GTPZv6a1/R87v0=
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github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
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github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqxOKXbg=
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github.com/julienschmidt/httprouter v1.2.0 h1:TDTW5Yz1mjftljbcKqRcrYhd4XeOoI98t+9HbQbYf7g=
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github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
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github.com/nats-io/gnatsd v1.4.1 h1:RconcfDeWpKCD6QIIwiVFcvForlXpWeJP7i5/lDLy44=
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@ -12,7 +14,10 @@ github.com/nats-io/nuid v1.0.0 h1:44QGdhbiANq8ZCbUkdn6W5bqtg+mHuDE4wOUuxxndFs=
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github.com/nats-io/nuid v1.0.0/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
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golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9 h1:mKdxBk7AujPs8kU4m80U72y/zjbZ3UcXC7dClwKbUI0=
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golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
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golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 h1:YUO/7uOKsKeq9UokNS62b8FYywz3ker1l1vDZRCRefw=
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golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a h1:1BGLXjeY4akVXGgbC9HugT3Jv3hCI0z56oJR5vAMgBU=
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golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
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15
main.go
15
main.go
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@ -2,12 +2,13 @@ package main
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import (
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"encoding/json"
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"flag"
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"fmt"
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"log"
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"net/http"
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"os"
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"time"
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"github.com/joho/godotenv"
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"github.com/julienschmidt/httprouter"
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"github.com/nats-io/go-nats"
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"github.com/golang/protobuf/proto"
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@ -30,10 +31,13 @@ var nc *nats.Conn
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var connections map[RawClient]chan []byte
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func main() {
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// Parse flags
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flag.StringVar(&listen, "listen", ":8080", "host and port to listen on")
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flag.StringVar(&natsHost, "nats", "nats://localhost:4222", "host and port of NATS")
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flag.Parse()
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// Load .env
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err := godotenv.Load()
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if err != nil {
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log.Fatal("Error loading .env file")
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}
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listen = os.Getenv("LISTEN")
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natsHost = os.Getenv("NATS")
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connections = make(map[RawClient]chan []byte)
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router.GET("/subscribe/:userid/client/:clientid", Subscribe)
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// NATS
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var err error
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nc, err = nats.Connect(natsHost)
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if err != nil {
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log.Fatal(err)
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