100 lines
2.3 KiB
Go
100 lines
2.3 KiB
Go
package app
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import (
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"encoding/json"
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"github.com/pkg/errors"
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cmn "github.com/tendermint/tmlibs/common"
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)
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// LoadGenesis - Load the genesis file into memory
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func (app *Basecoin) LoadGenesis(path string) error {
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genDoc, err := loadGenesis(path)
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if err != nil {
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return err
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}
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// set chain_id
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app.InitState("base/chain_id", genDoc.ChainID)
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// set accounts
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for _, acct := range genDoc.AppOptions.Accounts {
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_ = app.InitState("coin/account", string(acct))
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}
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// set plugin options
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for _, kv := range genDoc.AppOptions.pluginOptions {
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_ = app.InitState(kv.Key, kv.Value)
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}
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return nil
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}
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type keyValue struct {
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Key string `json:"key"`
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Value string `json:"value"`
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}
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// FullGenesisDoc - includes tendermint (in the json, we ignore here)
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type FullGenesisDoc struct {
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ChainID string `json:"chain_id"`
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AppOptions *GenesisDoc `json:"app_options"`
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}
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// GenesisDoc - All genesis values
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type GenesisDoc struct {
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Accounts []json.RawMessage `json:"accounts"`
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PluginOptions []json.RawMessage `json:"plugin_options"`
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pluginOptions []keyValue // unmarshaled rawmessages
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}
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func loadGenesis(filePath string) (*FullGenesisDoc, error) {
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bytes, err := cmn.ReadFile(filePath)
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if err != nil {
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return nil, errors.Wrap(err, "loading genesis file")
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}
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// the basecoin genesis go-wire/data :)
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genDoc := new(FullGenesisDoc)
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err = json.Unmarshal(bytes, genDoc)
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if err != nil {
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return nil, errors.Wrap(err, "unmarshaling genesis file")
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}
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if genDoc.AppOptions == nil {
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genDoc.AppOptions = new(GenesisDoc)
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}
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pluginOpts, err := parseGenesisList(genDoc.AppOptions.PluginOptions)
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if err != nil {
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return nil, err
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}
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genDoc.AppOptions.pluginOptions = pluginOpts
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return genDoc, nil
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}
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func parseGenesisList(kvzIn []json.RawMessage) (kvz []keyValue, err error) {
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if len(kvzIn)%2 != 0 {
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return nil, errors.New("genesis cannot have an odd number of items. Format = [key1, value1, key2, value2, ...]")
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}
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for i := 0; i < len(kvzIn); i += 2 {
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kv := keyValue{}
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rawK := []byte(kvzIn[i])
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err := json.Unmarshal(rawK, &(kv.Key))
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if err != nil {
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return nil, errors.Errorf("Non-string key: %s", string(rawK))
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}
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// convert value to string if possible (otherwise raw json)
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rawV := kvzIn[i+1]
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err = json.Unmarshal(rawV, &(kv.Value))
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if err != nil {
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kv.Value = string(rawV)
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}
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kvz = append(kvz, kv)
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}
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return kvz, nil
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}
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