accounts/mananger, internal/ethapi/api: Add new function AllAccounts on account manager to remove the duplication code on getting all wallets accounts

accounts/manager.go

@@ -21,6 +21,7 @@ import (
 	"sort"
 	"sync"
 
+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/event"
 )
 
@@ -147,6 +148,20 @@ func (am *Manager) Wallet(url string) (Wallet, error) {
 	return nil, ErrUnknownWallet
 }
 
+// AllAccounts returns all account addresses of all wallets within the account manager
+func (am *Manager) AllAccounts() []common.Address {
+	am.lock.RLock()
+	defer am.lock.RUnlock()
+
+	addresses := make([]common.Address, 0) // return [] instead of nil if empty
+	for _, wallet := range am.wallets {
+		for _, account := range wallet.Accounts() {
+			addresses = append(addresses, account.Address)
+		}
+	}
+	return addresses
+}
+
 // Find attempts to locate the wallet corresponding to a specific account. Since
 // accounts can be dynamically added to and removed from wallets, this method has
 // a linear runtime in the number of wallets.

internal/ethapi/api.go

@@ -190,13 +190,7 @@ func NewPublicAccountAPI(am *accounts.Manager) *PublicAccountAPI {
 
 // Accounts returns the collection of accounts this node manages
 func (s *PublicAccountAPI) Accounts() []common.Address {
-	addresses := make([]common.Address, 0) // return [] instead of nil if empty
-	for _, wallet := range s.am.Wallets() {
-		for _, account := range wallet.Accounts() {
-			addresses = append(addresses, account.Address)
-		}
-	}
-	return addresses
+	return s.am.AllAccounts()
 }
 
 // PrivateAccountAPI provides an API to access accounts managed by this node.
@@ -219,13 +213,7 @@ func NewPrivateAccountAPI(b Backend, nonceLock *AddrLocker) *PrivateAccountAPI {
 
 // ListAccounts will return a list of addresses for accounts this node manages.
 func (s *PrivateAccountAPI) ListAccounts() []common.Address {
-	addresses := make([]common.Address, 0) // return [] instead of nil if empty
-	for _, wallet := range s.am.Wallets() {
-		for _, account := range wallet.Accounts() {
-			addresses = append(addresses, account.Address)
-		}
-	}
-	return addresses
+	return s.am.AllAccounts()
 }
 
 // rawWallet is a JSON representation of an accounts.Wallet interface, with its