feat: define log and http server struct

This commit is contained in:
RouxAntoine 2021-03-01 01:40:33 +01:00
parent b3cdc24b7d
commit 50d74f20f1
Signed by: antoine
GPG Key ID: 098FB66FC0475E70
13 changed files with 516 additions and 93 deletions

8
.gitignore vendored
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@ -1,6 +1,10 @@
.vscode/ .vscode/
!.vscode/launch.json
bin/
!bin/.gitkeep
certs/out/ certs/out/
certs/pki_auth.key
!certs/out/.gitkeep !certs/out/.gitkeep
*.log
certs/pki_auth.key

16
.vscode/launch.json vendored Normal file
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@ -0,0 +1,16 @@
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "Run weather applicaton",
"type": "go",
"request": "launch",
"mode": "auto",
"program": "${workspaceFolder}/cmd/weather/main.go",
"cwd": "${workspaceFolder}"
}
]
}

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@ -1,5 +1,9 @@
.PHONY: gen-cert .PHONY: gen-cert
build:
go build -o bin/weather cmd/weather/main.go
gen-cert: gen-cert:
cfssl gencert -config certs/client-config.json -profile server -hostname weather.localdomain certs/client-csr.json | cfssljson -bare certs/out/weather cfssl gencert -config certs/client-config.json -profile server -hostname weather.localdomain certs/client-csr.json | cfssljson -bare certs/out/weather
@ -7,3 +11,18 @@ dependencies:
go get github.com/cloudflare/cfssl/cmd/cfssl go get github.com/cloudflare/cfssl/cmd/cfssl
go get github.com/cloudflare/cfssl/cmd/cfssljson go get github.com/cloudflare/cfssl/cmd/cfssljson
go get github.com/cloudflare/cfssl/cmd/mkbundle go get github.com/cloudflare/cfssl/cmd/mkbundle
cert-info:
cfssl certinfo -cert certs/out/weather.pem
cert-info-remote:
cfssl certinfo -domain weather.localdomain:8080
curl-test:
curl --cacert certs/out/ca.pem https://weather.localdomain:8080
clean:
rm -rf bin/*
get-root-ca:
cfssl info -remote rasp1.localdomain:444 -config certs/client-config.json | cfssljson -bare -stdout /dev/stdout | tee certs/out/ca.pem

0
bin/.gitkeep Normal file
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@ -10,7 +10,7 @@
"auth_keys" : { "auth_keys" : {
"key1" : { "key1" : {
"type" : "standard", "type" : "standard",
"key" : "file:pki_auth.key" "key" : "file:certs/pki_auth.key"
} }
}, },
"remotes" : { "remotes" : {

58
cmd/weather/main.go Normal file
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@ -0,0 +1,58 @@
package main
import (
"context"
"flag"
"go/weather/internal/web"
"go/weather/pkg/logger"
"log"
"os"
"os/signal"
"time"
"go.uber.org/zap"
)
const (
apiPrefix = "/api"
apiRouterName = "api"
)
func main() {
var wait time.Duration
flag.DurationVar(&wait, "graceful-timeout", time.Second*15, "the duration for which the server gracefully wait for existing connections to finish - e.g. 15s or 1m")
flag.Parse()
//logger
loggerLevel := zap.NewAtomicLevel()
defaultLogger := logger.NewLogger("default", "weather.log", loggerLevel)
defer defaultLogger.Sync()
//http
addr := web.NewListenAddr("127.0.0.1", 8080)
defaultLogger.Sugar().Infof("Weather server is listening on %s", addr)
server := web.New(defaultLogger, addr).
WithTLSConfigure().
WithHandler().
WithHTTPLogging().
WithErrorLogging()
go func() {
if err := server.Serve(); err != nil {
defaultLogger.Sugar().Info(err)
}
}()
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
<-c
ctx, cancel := context.WithTimeout(context.Background(), wait)
defer cancel()
server.Shutdown(ctx)
log.Println("shutting down")
os.Exit(0)
}

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@ -1,17 +0,0 @@
package main
import (
"go/weather/internal"
"io/ioutil"
"net/http"
)
func main() {
http.Handler(func(rw http.ResponseWriter, r *http.Request) {
})
certFile := ioutil.ReadFile("./")
http.ListenAndServeTLS(internal.NewListenAddr("127.0.0.1", 443).String(), "", "", nil)
}

16
go.mod
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@ -2,4 +2,18 @@ module go/weather
go 1.16 go 1.16
require github.com/cloudflare/cfssl v1.5.0 // indirect require (
github.com/elastic/go-sysinfo v1.6.0 // indirect
github.com/elastic/go-windows v1.0.1 // indirect
github.com/gorilla/mux v1.8.0
github.com/magefile/mage v1.11.0 // indirect
github.com/prometheus/procfs v0.6.0 // indirect
go.elastic.co/apm/module/apmzap v1.11.0 // indirect
go.elastic.co/ecszap v1.0.0
go.uber.org/multierr v1.6.0 // indirect
go.uber.org/zap v1.16.0
golang.org/x/sys v0.0.0-20210228012217-479acdf4ea46 // indirect
golang.org/x/tools v0.0.0-20200509030707-2212a7e161a5 // indirect
gopkg.in/natefinch/lumberjack.v2 v2.0.0
howett.net/plist v0.0.0-20201203080718-1454fab16a06 // indirect
)

169
go.sum
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@ -1,93 +1,120 @@
bitbucket.org/liamstask/goose v0.0.0-20150115234039-8488cc47d90c/go.mod h1:hSVuE3qU7grINVSwrmzHfpg9k87ALBk+XaualNyUzI4= github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
github.com/GeertJohan/go.incremental v1.0.0/go.mod h1:6fAjUhbVuX1KcMD3c8TEgVUqmo4seqhv0i0kdATSkM0= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/GeertJohan/go.rice v1.0.0 h1:KkI6O9uMaQU3VEKaj01ulavtF7o1fWT7+pk/4voiMLQ= github.com/armon/go-radix v1.0.0 h1:F4z6KzEeeQIMeLFa97iZU6vupzoecKdU5TX24SNppXI=
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github.com/akavel/rsrc v0.8.0/go.mod h1:uLoCtb9J+EyAqh+26kdrTgmzRBFPGOolLWKpdxkKq+c= github.com/cucumber/godog v0.8.1/go.mod h1:vSh3r/lM+psC1BPXvdkSEuNjmXfpVqrMGYAElF6hxnA=
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github.com/weppos/publicsuffix-go v0.4.0/go.mod h1:z3LCPQ38eedDQSwmsSRW4Y7t2L8Ln16JPQ02lHAdn5k= github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/weppos/publicsuffix-go v0.13.0 h1:0Tu1uzLBd1jPn4k6OnMmOPZH/l/9bj9kUOMMkoRs6Gg= go.elastic.co/apm v1.11.0 h1:uJyt6nCW9880sZhfl1tB//Jy/5TadNoAd8edRUtgb3w=
github.com/weppos/publicsuffix-go v0.13.0/go.mod h1:z3LCPQ38eedDQSwmsSRW4Y7t2L8Ln16JPQ02lHAdn5k= go.elastic.co/apm v1.11.0/go.mod h1:qoOSi09pnzJDh5fKnfY7bPmQgl8yl2tULdOu03xhui0=
github.com/ziutek/mymysql v1.5.4/go.mod h1:LMSpPZ6DbqWFxNCHW77HeMg9I646SAhApZ/wKdgO/C0= go.elastic.co/apm/module/apmzap v1.11.0 h1:KhAsnIorvxH9ar8tYV8jDM5wChaw5gnISdgInBwnomc=
github.com/zmap/rc2 v0.0.0-20131011165748-24b9757f5521/go.mod h1:3YZ9o3WnatTIZhuOtot4IcUfzoKVjUHqu6WALIyI0nE= go.elastic.co/apm/module/apmzap v1.11.0/go.mod h1:sszgX2DXX5tF1SdxV+gYZNdol4s4JEM1qswxK0ghQ34=
github.com/zmap/zcertificate v0.0.0-20180516150559-0e3d58b1bac4/go.mod h1:5iU54tB79AMBcySS0R2XIyZBAVmeHranShAFELYx7is= go.elastic.co/ecszap v1.0.0 h1:PdQkRUeraR3XHJ14T7JMa+ncU0XXrVrcEN/BoRa2nMI=
github.com/zmap/zcrypto v0.0.0-20200513165325-16679db567ff/go.mod h1:TxpejqcVKQjQaVVmMGfzx5HnmFMdIU+vLtaCyPBfGI4= go.elastic.co/ecszap v1.0.0/go.mod h1:HTUi+QRmr3EuZMqxPX+5fyOdMNfUu5iPebgfhgsTJYQ=
github.com/zmap/zcrypto v0.0.0-20200911161511-43ff0ea04f21 h1:PIpcdSOg3pMdFJUBg5yR9xxcj5rm/SGAyaWT/wK6Kco= go.elastic.co/fastjson v1.1.0 h1:3MrGBWWVIxe/xvsbpghtkFoPciPhOCmjsR/HfwEeQR4=
github.com/zmap/zcrypto v0.0.0-20200911161511-43ff0ea04f21/go.mod h1:TxpejqcVKQjQaVVmMGfzx5HnmFMdIU+vLtaCyPBfGI4= go.elastic.co/fastjson v1.1.0/go.mod h1:boNGISWMjQsUPy/t6yqt2/1Wx4YNPSe+mZjlyw9vKKI=
github.com/zmap/zlint/v2 v2.2.1 h1:b2kI/ToXX16h2wjV2c6Da65eT6aTMtkLHKetXuM9EtI= go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
github.com/zmap/zlint/v2 v2.2.1/go.mod h1:ixPWsdq8qLxYRpNUTbcKig3R7WgmspsHGLhCCs6rFAM= go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
go.uber.org/multierr v1.3.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU=
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/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
go.uber.org/zap v1.9.1/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
go.uber.org/zap v1.14.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
go.uber.org/zap v1.16.0 h1:uFRZXykJGK9lLY4HtgSw44DnIcAM+kRBP7x5m+NpAOM=
go.uber.org/zap v1.16.0/go.mod h1:MA8QOfq0BHJwdXa996Y4dYkAqRKB8/1K1QMMZVaNZjQ=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20200124225646-8b5121be2f68/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto= golang.org/x/lint v0.0.0-20190930215403-16217165b5de h1:5hukYrvBGR8/eNkX5mdUezrA6JiaEZDtJb9Ei+1LlBs=
golang.org/x/crypto v0.0.0-20201012173705-84dcc777aaee h1:4yd7jl+vXjalO5ztz6Vc1VADv+S/80LGJmyl1ROJ2AI=
golang.org/x/crypto v0.0.0-20201012173705-84dcc777aaee/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc= golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20201010224723-4f7140c49acb h1:mUVeFHoDKis5nxCAzoAi7E8Ghb86EXh/RK6wtvJIqRY= golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20201010224723-4f7140c49acb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU= golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191025021431-6c3a3bfe00ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20210228012217-479acdf4ea46 h1:V066+OYJ66oTjnhm4Yrn7SXIwSCiDQJxpBxmvqb1N1c=
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golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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google.golang.org/appengine v1.6.6 h1:lMO5rYAqUxkmaj76jAkRUvt5JZgFymx/+Q5Mzfivuhc= golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
google.golang.org/appengine v1.6.6/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc= golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/natefinch/lumberjack.v2 v2.0.0 h1:1Lc07Kr7qY4U2YPouBjpCLxpiyxIVoxqXgkXLknAOE8=
gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
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@ -1,4 +1,4 @@
package internal package web
import "fmt" import "fmt"

124
internal/web/server.go Normal file
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@ -0,0 +1,124 @@
package web
import (
"context"
"crypto/tls"
"encoding/json"
"fmt"
"go/weather/pkg/logger"
"net"
"net/http"
"os"
"time"
"github.com/gorilla/mux"
"go.uber.org/zap"
)
const (
apiPrefix = "/api"
apiRouterName = "api"
)
//WeatherServer http server for weather application
type WeatherServer struct {
http.Server
router *mux.Router
wlogger *logger.WeatherLogger
subRouters map[string]*mux.Router
}
//New construct new instance
func New(logger *logger.WeatherLogger, addr ListenAddr) *WeatherServer {
return &WeatherServer{
Server: http.Server{
Addr: addr.String(),
BaseContext: func(l net.Listener) context.Context {
customContext := context.Background()
// here configure context properties
return customContext
},
WriteTimeout: 15 * time.Second,
ReadTimeout: 15 * time.Second,
},
router: mux.NewRouter(),
wlogger: logger,
subRouters: make(map[string]*mux.Router, 1),
}
}
//WithHandler register weather handler
func (ws *WeatherServer) WithHandler() *WeatherServer {
ws.router.HandleFunc("/", func(rw http.ResponseWriter, r *http.Request) {
rw.Write([]byte("coucou"))
})
api := ws.getOrCreateSubRouterByName(apiRouterName, apiPrefix)
api.HandleFunc("/health", func(rw http.ResponseWriter, r *http.Request) {
json.NewEncoder(rw).Encode(map[string]bool{"ok": true})
})
return ws
}
//WithHTTPLogging add http server request/response logging capability
func (ws *WeatherServer) WithHTTPLogging() *WeatherServer {
ws.Server.Handler = ws.wlogger.HTTPLogHandler(ws.router)
// ws.router.Use(ws.wlogger.HTTPLogHandler)
// ws.router.Use(apmgorilla.Middleware())
api := ws.getOrCreateSubRouterByName(apiRouterName, apiPrefix)
api.HandleFunc("/log", ws.wlogger.Level.ServeHTTP)
return ws
}
//WithErrorLogging add http server error logging capability
func (ws *WeatherServer) WithErrorLogging() *WeatherServer {
stdLogger, err := zap.NewStdLogAt(ws.wlogger.Logger, zap.ErrorLevel)
ws.handleError(err)
ws.Server.ErrorLog = stdLogger
return ws
}
//WithTLSConfigure add cert and key file to server, permit TLS capability
func (ws *WeatherServer) WithTLSConfigure() *WeatherServer {
currentPath, err := os.Getwd()
ws.handleError(err)
certPath := fmt.Sprintf("%s%ccerts%cout%cweather.pem", currentPath, os.PathSeparator, os.PathSeparator, os.PathSeparator)
keyPath := fmt.Sprintf("%s%ccerts%cout%cweather-key.pem", currentPath, os.PathSeparator, os.PathSeparator, os.PathSeparator)
cert, err := tls.LoadX509KeyPair(
certPath,
keyPath,
)
ws.handleError(err)
ws.Server.TLSConfig = &tls.Config{Certificates: []tls.Certificate{cert}}
return ws
}
//Serve start http server
func (ws *WeatherServer) Serve() error {
// Server.Hanlder is nil when we don't use WithHTTPLogging
if ws.Server.Handler == nil {
ws.Server.Handler = ws.router
}
return ws.Server.ListenAndServeTLS("", "")
}
//getOrCreateSubRouterByName return a router by name or create if it doesn't exist yet
func (ws *WeatherServer) getOrCreateSubRouterByName(name, prefix string) *mux.Router {
if api := ws.subRouters[name]; api == nil {
ws.subRouters[name] = ws.router.PathPrefix(prefix).Subrouter()
}
return ws.subRouters[name]
}
//handleError generic fatal error
func (ws *WeatherServer) handleError(err error) {
if err != nil {
ws.wlogger.Fatal("Server error", zap.Error(err))
}
}

153
pkg/logger/logger.go Normal file
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package logger
import (
"bytes"
"io"
"io/ioutil"
"net/http"
"os"
"os/signal"
"syscall"
"go.elastic.co/apm/module/apmzap"
"go.elastic.co/ecszap"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"gopkg.in/natefinch/lumberjack.v2"
)
// available level are
// DebugLevel
// InfoLevel
// WarnLevel
// ErrorLevel
// DPanicLevel
// PanicLevel
// FatalLevel
//WeatherLogger custom logger with totation and http Request and Response capability
type WeatherLogger struct {
*zap.Logger
Level zap.AtomicLevel
}
//NewLogger create new named logger
func NewLogger(loggerName, logPath string, level zap.AtomicLevel) *WeatherLogger {
rotationPolicy := &lumberjack.Logger{
Filename: logPath,
MaxSize: 5, // megabytes
MaxBackups: 2, // number of backup
// MaxAge: 28, // days
Compress: true, // disabled by default
}
rotateCatcher(rotationPolicy)
encoderConfig := ecszap.EncoderConfig{
EncodeLevel: zapcore.CapitalLevelEncoder,
EncodeDuration: zapcore.MillisDurationEncoder,
EncodeCaller: ecszap.FullCallerEncoder,
EnableStackTrace: false,
}
// log enabled by atomic level and error priority
errorPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
return lvl >= level.Level() && lvl >= zapcore.ErrorLevel
})
// log enabled by atomic level and low priority
lowPriority := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
return lvl >= level.Level() && lvl < zapcore.ErrorLevel
})
consoleDebugging := zapcore.Lock(os.Stdout)
consoleErrors := zapcore.Lock(os.Stderr)
consoleEncoder := zapcore.NewConsoleEncoder(zap.NewDevelopmentEncoderConfig())
core := zapcore.NewTee(
ecszap.NewCore(encoderConfig, zapcore.AddSync(rotationPolicy), level),
zapcore.NewCore(consoleEncoder, consoleDebugging, lowPriority),
zapcore.NewCore(consoleEncoder, consoleErrors, errorPriority),
)
logger := zap.New(core, zap.AddCaller())
return &WeatherLogger{
Logger: logger.Named(loggerName),
Level: level,
}
}
//HTTPLogHandler http handler to log http request and http response
func (wl *WeatherLogger) HTTPLogHandler(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ww := ResponseWriter{
ResponseWriter: w,
}
wl.logHTTPRequest(r)
next.ServeHTTP(&ww, r)
wl.logHTTPResponse(ww)
})
}
type readCloser struct {
io.Reader
io.Closer
}
func useTeeReader(rc io.ReadCloser, w io.Writer) io.ReadCloser {
tee := io.TeeReader(rc, w)
teeCloser := readCloser{tee, rc}
return teeCloser
}
//logHTTPRequest print request information
func (wl *WeatherLogger) logHTTPRequest(r *http.Request) {
var buf bytes.Buffer
b, err := ioutil.ReadAll(io.TeeReader(r.Body, &buf))
wl.handleError(err)
r.Body = readCloser{&buf, r.Body}
traceContextFields := apmzap.TraceContext(r.Context())
// var buf bytes.Buffer
// var buf2 bytes.Buffer
// b, err := io.Copy(io.MultiWriter(&buf, &buf2), r.Body)
// wl.handleError(err)
// r.Body = readCloser{&buf2, r.Body}
wl.Logger.With(traceContextFields...).Debug("Request",
zap.String("http.request.method", r.Method),
zap.ByteString("http.request.body.content", b),
zap.Int("http.request.body.bytes", len(b)),
// zap.Int64("http.request.bytes", r.Header ContentLength), // total body+header len
// zap.String(""),
// zap.String(""),
// zap.String(""),
)
}
//logHTTPResponse print response information
func (wl *WeatherLogger) logHTTPResponse(ww ResponseWriter) {
wl.Logger.Debug("Response",
zap.Int("http.response.status_code", ww.Status),
zap.Int("http.response.body.bytes", ww.Length),
)
}
//rotateCatcher force log rotation on SIGUSR1 signal
func rotateCatcher(rotationPolicy *lumberjack.Logger) {
c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGUSR1)
go func() {
for {
<-c
rotationPolicy.Rotate()
}
}()
}
//handleError generic fatal error
func (wl *WeatherLogger) handleError(err error) {
if err != nil {
wl.Logger.Fatal("Logger error", zap.Error(err))
}
}

25
pkg/logger/writer.go Normal file
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package logger
import "net/http"
//ResponseWriter ResponseWriter
type ResponseWriter struct {
http.ResponseWriter
Status int
Length int
}
//WriteHeader override `http.ResponseWriter` memorize status code
func (w *ResponseWriter) WriteHeader(status int) {
w.Status = status
w.ResponseWriter.WriteHeader(status)
}
func (w *ResponseWriter) Write(b []byte) (int, error) {
if w.Status == 0 {
w.Status = 200
}
n, err := w.ResponseWriter.Write(b)
w.Length += n
return n, err
}