mirror of
https://github.com/kaspanet/kaspad.git
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1f35378a4d
* [NOD-386] Extract net parsing functionality to a shared place. * [NOD-386] Add extract ActiveNetParams to cmdconfig * [NOD-386] Adding comments so go-vet won't shout at me * [NOD-386] Rename package name to config * [NOD-386] Rename commandConfig to configFlags * [NOD-386] Rename function to ResolveNetwork * [NOD-386] Fix renaming errors * [NOD-386] Refactor network config to btcd level so APIserver and btcd could use it * [NOD-386] Refactor network config to config package * [NOD-386] Move ActiveNetParams to network section * [NOD-386] Explictly return nil * [NOD-386] Reuse activeNetParams from netwrok config * [NOD-386] Set ActiveNetworkFlags instance to be global * [NOD-386] Remove redundant newline * [NOD-386] Init ActiveNetParams in address manager test * [NOD-386] Add dnsseeder network config * [NOD-386] Use ActiveConfig() method to access configuration
117 lines
3.6 KiB
Go
117 lines
3.6 KiB
Go
// Copyright (c) 2013-2016 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package main
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import (
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"fmt"
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"github.com/daglabs/btcd/config"
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"github.com/pkg/errors"
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"os"
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"path/filepath"
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"strings"
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"github.com/daglabs/btcd/database"
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_ "github.com/daglabs/btcd/database/ffldb"
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"github.com/daglabs/btcd/util"
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flags "github.com/jessevdk/go-flags"
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)
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const (
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minCandidates = 1
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maxCandidates = 20
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defaultNumCandidates = 5
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defaultDbType = "ffldb"
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)
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var (
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btcdHomeDir = util.AppDataDir("btcd", false)
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defaultDataDir = filepath.Join(btcdHomeDir, "data")
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knownDbTypes = database.SupportedDrivers()
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activeConfig *ConfigFlags
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)
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// ActiveConfig returns the active configuration struct
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func ActiveConfig() *ConfigFlags {
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return activeConfig
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}
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// ConfigFlags defines the configuration options for findcheckpoint.
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//
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// See loadConfig for details on the configuration load process.
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type ConfigFlags struct {
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DataDir string `short:"b" long:"datadir" description:"Location of the btcd data directory"`
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DbType string `long:"dbtype" description:"Database backend to use for the Block Chain"`
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NumCandidates int `short:"n" long:"numcandidates" description:"Max num of checkpoint candidates to show {1-20}"`
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UseGoOutput bool `short:"g" long:"gooutput" description:"Display the candidates using Go syntax that is ready to insert into the btcchain checkpoint list"`
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config.NetworkFlags
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}
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// validDbType returns whether or not dbType is a supported database type.
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func validDbType(dbType string) bool {
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for _, knownType := range knownDbTypes {
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if dbType == knownType {
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return true
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}
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}
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return false
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}
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// loadConfig initializes and parses the config using command line options.
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func loadConfig() (*ConfigFlags, []string, error) {
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// Default config.
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activeConfig = &ConfigFlags{
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DataDir: defaultDataDir,
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DbType: defaultDbType,
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NumCandidates: defaultNumCandidates,
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}
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// Parse command line options.
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parser := flags.NewParser(&activeConfig, flags.Default)
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remainingArgs, err := parser.Parse()
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if err != nil {
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if e, ok := err.(*flags.Error); !ok || e.Type != flags.ErrHelp {
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parser.WriteHelp(os.Stderr)
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}
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return nil, nil, err
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}
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funcName := "loadConfig"
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err = activeConfig.ResolveNetwork(parser)
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if err != nil {
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return nil, nil, err
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}
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// Validate database type.
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if !validDbType(activeConfig.DbType) {
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str := "%s: The specified database type [%s] is invalid -- " +
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"supported types %s"
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err := errors.Errorf(str, funcName, activeConfig.DbType, strings.Join(knownDbTypes, ", "))
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fmt.Fprintln(os.Stderr, err)
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parser.WriteHelp(os.Stderr)
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return nil, nil, err
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}
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// Append the network type to the data directory so it is "namespaced"
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// per network. In addition to the block database, there are other
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// pieces of data that are saved to disk such as address manager state.
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// All data is specific to a network, so namespacing the data directory
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// means each individual piece of serialized data does not have to
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// worry about changing names per network and such.
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activeConfig.DataDir = filepath.Join(activeConfig.DataDir, activeConfig.NetParams().Name)
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// Validate the number of candidates.
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if activeConfig.NumCandidates < minCandidates || activeConfig.NumCandidates > maxCandidates {
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str := "%s: The specified number of candidates is out of " +
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"range -- parsed [%d]"
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err = errors.Errorf(str, funcName, activeConfig.NumCandidates)
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fmt.Fprintln(os.Stderr, err)
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parser.WriteHelp(os.Stderr)
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return nil, nil, err
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}
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return activeConfig, remainingArgs, nil
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}
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