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settings.go
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settings.go
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package main
import (
"fmt"
"os"
"sort"
"strconv"
"strings"
"time"
"github.com/nspcc-dev/neofs-http-gw/resolver"
"github.com/spf13/pflag"
"github.com/spf13/viper"
"github.com/valyala/fasthttp"
)
const (
defaultRebalanceTimer = 15 * time.Second
defaultRequestTimeout = 15 * time.Second
defaultConnectTimeout = 30 * time.Second
cfgListenAddress = "listen_address"
cfgTLSCertificate = "tls_certificate"
cfgTLSKey = "tls_key"
// Web.
cfgWebReadBufferSize = "web.read_buffer_size"
cfgWebWriteBufferSize = "web.write_buffer_size"
cfgWebReadTimeout = "web.read_timeout"
cfgWebWriteTimeout = "web.write_timeout"
cfgWebStreamRequestBody = "web.stream_request_body"
cfgWebMaxRequestBodySize = "web.max_request_body_size"
// Timeouts.
cfgConTimeout = "connect_timeout"
cfgReqTimeout = "request_timeout"
cfgRebalance = "rebalance_timer"
// Logger.
cfgLoggerLevel = "logger.level"
// Wallet.
cfgWalletPassphrase = "wallet.passphrase"
cfgWalletPath = "wallet.path"
cfgWalletAddress = "wallet.address"
// Uploader Header.
cfgUploaderHeaderEnableDefaultTimestamp = "upload_header.use_default_timestamp"
// Peers.
cfgPeers = "peers"
// NeoGo.
cfgRPCEndpoint = "rpc_endpoint"
// Resolving.
cfgResolveOrder = "resolve_order"
// Zip compression.
cfgZipCompression = "zip.compression"
// Command line args.
cmdHelp = "help"
cmdVersion = "version"
cmdPprof = "pprof"
cmdMetrics = "metrics"
cmdWallet = "wallet"
cmdAddress = "address"
cmdConfig = "config"
)
var ignore = map[string]struct{}{
cfgPeers: {},
cmdHelp: {},
cmdVersion: {},
}
func settings() *viper.Viper {
v := viper.New()
v.AutomaticEnv()
v.SetEnvPrefix(Prefix)
v.AllowEmptyEnv(true)
v.SetConfigType("yaml")
v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
// flags setup:
flags := pflag.NewFlagSet("commandline", pflag.ExitOnError)
flags.SetOutput(os.Stdout)
flags.SortFlags = false
flags.Bool(cmdPprof, false, "enable pprof")
flags.Bool(cmdMetrics, false, "enable prometheus")
help := flags.BoolP(cmdHelp, "h", false, "show help")
version := flags.BoolP(cmdVersion, "v", false, "show version")
flags.StringP(cmdWallet, "w", "", `path to the wallet`)
flags.String(cmdAddress, "", `address of wallet account`)
config := flags.String(cmdConfig, "", "config path")
flags.Duration(cfgConTimeout, defaultConnectTimeout, "gRPC connect timeout")
flags.Duration(cfgReqTimeout, defaultRequestTimeout, "gRPC request timeout")
flags.Duration(cfgRebalance, defaultRebalanceTimer, "gRPC connection rebalance timer")
flags.String(cfgListenAddress, "0.0.0.0:8082", "address to listen")
flags.String(cfgTLSCertificate, "", "TLS certificate path")
flags.String(cfgTLSKey, "", "TLS key path")
peers := flags.StringArrayP(cfgPeers, "p", nil, "NeoFS nodes")
resolveMethods := flags.StringSlice(cfgResolveOrder, []string{resolver.NNSResolver, resolver.DNSResolver}, "set container name resolve order")
// set defaults:
// logger:
v.SetDefault(cfgLoggerLevel, "debug")
// web-server:
v.SetDefault(cfgWebReadBufferSize, 4096)
v.SetDefault(cfgWebWriteBufferSize, 4096)
v.SetDefault(cfgWebReadTimeout, time.Minute*10)
v.SetDefault(cfgWebWriteTimeout, time.Minute*5)
v.SetDefault(cfgWebStreamRequestBody, true)
v.SetDefault(cfgWebMaxRequestBodySize, fasthttp.DefaultMaxRequestBodySize)
// upload header
v.SetDefault(cfgUploaderHeaderEnableDefaultTimestamp, false)
// zip:
v.SetDefault(cfgZipCompression, false)
if err := v.BindPFlags(flags); err != nil {
panic(err)
}
if err := flags.Parse(os.Args); err != nil {
panic(err)
}
if resolveMethods != nil {
v.SetDefault(cfgResolveOrder, *resolveMethods)
}
switch {
case help != nil && *help:
fmt.Printf("NeoFS HTTP Gateway %s\n", Version)
flags.PrintDefaults()
fmt.Println()
fmt.Println("Default environments:")
fmt.Println()
keys := v.AllKeys()
sort.Strings(keys)
for i := range keys {
if _, ok := ignore[keys[i]]; ok {
continue
}
k := strings.Replace(keys[i], ".", "_", -1)
fmt.Printf("%s_%s = %v\n", Prefix, strings.ToUpper(k), v.Get(keys[i]))
}
fmt.Println()
fmt.Println("Peers preset:")
fmt.Println()
fmt.Printf("%s_%s_[N]_ADDRESS = string\n", Prefix, strings.ToUpper(cfgPeers))
fmt.Printf("%s_%s_[N]_WEIGHT = float\n", Prefix, strings.ToUpper(cfgPeers))
os.Exit(0)
case version != nil && *version:
fmt.Printf("NeoFS HTTP Gateway %s\n", Version)
os.Exit(0)
}
if v.IsSet(cmdConfig) {
if cfgFile, err := os.Open(*config); err != nil {
panic(err)
} else if err := v.ReadConfig(cfgFile); err != nil {
panic(err)
}
}
if peers != nil && len(*peers) > 0 {
for i := range *peers {
v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".address", (*peers)[i])
v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".weight", 1)
v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".priority", 1)
}
}
return v
}