status-go/rpc/network/network.go

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package network
import (
"bytes"
"database/sql"
"fmt"
"github.com/status-im/status-go/params"
)
type CombinedNetwork struct {
Prod *params.Network
Test *params.Network
}
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const baseQuery = "SELECT chain_id, chain_name, rpc_url, original_rpc_url, fallback_url, original_fallback_url, block_explorer_url, icon_url, native_currency_name, native_currency_symbol, native_currency_decimals, is_test, layer, enabled, chain_color, short_name, related_chain_id FROM networks"
func newNetworksQuery() *networksQuery {
buf := bytes.NewBuffer(nil)
buf.WriteString(baseQuery)
return &networksQuery{buf: buf}
}
type networksQuery struct {
buf *bytes.Buffer
args []interface{}
added bool
}
func (nq *networksQuery) andOrWhere() {
if nq.added {
nq.buf.WriteString(" AND")
} else {
nq.buf.WriteString(" WHERE")
}
}
func (nq *networksQuery) filterEnabled(enabled bool) *networksQuery {
nq.andOrWhere()
nq.added = true
nq.buf.WriteString(" enabled = ?")
nq.args = append(nq.args, enabled)
return nq
}
func (nq *networksQuery) filterChainID(chainID uint64) *networksQuery {
nq.andOrWhere()
nq.added = true
nq.buf.WriteString(" chain_id = ?")
nq.args = append(nq.args, chainID)
return nq
}
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func (nq *networksQuery) exec(db *sql.DB) ([]*params.Network, error) {
rows, err := db.Query(nq.buf.String(), nq.args...)
if err != nil {
return nil, err
}
var res []*params.Network
defer rows.Close()
for rows.Next() {
network := params.Network{}
err := rows.Scan(
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&network.ChainID, &network.ChainName, &network.RPCURL, &network.OriginalRPCURL, &network.FallbackURL, &network.OriginalFallbackURL,
&network.BlockExplorerURL, &network.IconURL, &network.NativeCurrencyName, &network.NativeCurrencySymbol,
&network.NativeCurrencyDecimals, &network.IsTest, &network.Layer, &network.Enabled, &network.ChainColor, &network.ShortName,
&network.RelatedChainID,
)
if err != nil {
return nil, err
}
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res = append(res, &network)
}
return res, err
}
type Manager struct {
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db *sql.DB
configuredNetworks []params.Network
}
func NewManager(db *sql.DB) *Manager {
return &Manager{
db: db,
}
}
func find(chainID uint64, networks []params.Network) int {
for i := range networks {
if networks[i].ChainID == chainID {
return i
}
}
return -1
}
func (nm *Manager) Init(networks []params.Network) error {
if networks == nil {
return nil
}
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nm.configuredNetworks = networks
var errors string
currentNetworks, _ := nm.Get(false)
// Delete networks which are not supported any more
for i := range currentNetworks {
if find(currentNetworks[i].ChainID, networks) == -1 {
err := nm.Delete(currentNetworks[i].ChainID)
if err != nil {
errors += fmt.Sprintf("error deleting network with ChainID: %d, %s", currentNetworks[i].ChainID, err.Error())
}
}
}
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// Add new networks and update related chain id for the old ones
for i := range networks {
found := false
for j := range currentNetworks {
if currentNetworks[j].ChainID == networks[i].ChainID {
found = true
if currentNetworks[j].RelatedChainID != networks[i].RelatedChainID {
// Update fallback_url if it's different
err := nm.UpdateRelatedChainID(currentNetworks[j].ChainID, networks[i].RelatedChainID)
if err != nil {
errors += fmt.Sprintf("error updating network fallback_url for ChainID: %d, %s", currentNetworks[j].ChainID, err.Error())
}
}
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err := nm.UpdateOriginalURL(currentNetworks[j].ChainID, networks[i].RPCURL, networks[i].FallbackURL)
if err != nil {
errors += fmt.Sprintf("error updating network original url for ChainID: %d, %s", currentNetworks[j].ChainID, err.Error())
}
break
}
}
if !found {
// Add network if doesn't exist
err := nm.Upsert(&networks[i])
if err != nil {
errors += fmt.Sprintf("error inserting network with ChainID: %d, %s", networks[i].ChainID, err.Error())
}
err = nm.UpdateOriginalURL(networks[i].ChainID, networks[i].RPCURL, networks[i].FallbackURL)
if err != nil {
errors += fmt.Sprintf("error updating network original url for ChainID: %d, %s", networks[i].ChainID, err.Error())
}
}
}
if len(errors) > 0 {
return fmt.Errorf(errors)
}
return nil
}
func (nm *Manager) Upsert(network *params.Network) error {
_, err := nm.db.Exec(
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"INSERT OR REPLACE INTO networks (chain_id, chain_name, rpc_url, original_rpc_url, fallback_url, original_fallback_url, block_explorer_url, icon_url, native_currency_name, native_currency_symbol, native_currency_decimals, is_test, layer, enabled, chain_color, short_name, related_chain_id) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
network.ChainID, network.ChainName, network.RPCURL, network.OriginalRPCURL, network.FallbackURL, network.OriginalFallbackURL, network.BlockExplorerURL, network.IconURL,
network.NativeCurrencyName, network.NativeCurrencySymbol, network.NativeCurrencyDecimals,
network.IsTest, network.Layer, network.Enabled, network.ChainColor, network.ShortName,
network.RelatedChainID,
)
return err
}
func (nm *Manager) Delete(chainID uint64) error {
_, err := nm.db.Exec("DELETE FROM networks WHERE chain_id = ?", chainID)
return err
}
func (nm *Manager) UpdateRelatedChainID(chainID uint64, relatedChainID uint64) error {
_, err := nm.db.Exec(`UPDATE networks SET related_chain_id = ? WHERE chain_id = ?`, relatedChainID, chainID)
return err
}
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func (nm *Manager) UpdateOriginalURL(chainID uint64, originalRPCURL, OriginalFallbackURL string) error {
_, err := nm.db.Exec(`UPDATE networks SET original_rpc_url = ?, original_fallback_url = ? WHERE chain_id = ?`, originalRPCURL, OriginalFallbackURL, chainID)
return err
}
func (nm *Manager) Find(chainID uint64) *params.Network {
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networks, err := newNetworksQuery().filterChainID(chainID).exec(nm.db)
if len(networks) != 1 || err != nil {
return nil
}
return networks[0]
}
func (nm *Manager) Get(onlyEnabled bool) ([]*params.Network, error) {
query := newNetworksQuery()
if onlyEnabled {
query.filterEnabled(true)
}
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return query.exec(nm.db)
}
func (nm *Manager) GetCombinedNetworks() ([]*CombinedNetwork, error) {
query := newNetworksQuery()
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networks, err := query.exec(nm.db)
if err != nil {
return nil, err
}
var combinedNetworks []*CombinedNetwork
for _, network := range networks {
found := false
for _, n := range combinedNetworks {
if (n.Test != nil && network.ChainID == n.Test.RelatedChainID) || (n.Prod != nil && network.ChainID == n.Prod.RelatedChainID) {
found = true
if network.IsTest {
n.Test = network
break
} else {
n.Prod = network
break
}
}
}
if found {
continue
}
newCombined := &CombinedNetwork{}
if network.IsTest {
newCombined.Test = network
} else {
newCombined.Prod = network
}
combinedNetworks = append(combinedNetworks, newCombined)
}
return combinedNetworks, nil
}
func (nm *Manager) GetConfiguredNetworks() []params.Network {
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return nm.configuredNetworks
}