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// Copyright 2019 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"context"
"io/ioutil"
"net"
"net/http"
"os"
"testing"
"time"
"github.com/dexon-foundation/dexon/common"
"github.com/dexon-foundation/dexon/rpc"
mockRPC "github.com/dexon-foundation/dexon/swarm/storage/mock/rpc"
)
// TestHTTP_InMemory tests in-memory global store that exposes
// HTTP server.
func TestHTTP_InMemory(t *testing.T) {
testHTTP(t, true)
}
// TestHTTP_Database tests global store with persisted database
// that exposes HTTP server.
func TestHTTP_Database(t *testing.T) {
dir, err := ioutil.TempDir("", "swarm-global-store-")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
// create a fresh global store
testHTTP(t, true, "--dir", dir)
// check if data saved by the previous global store instance
testHTTP(t, false, "--dir", dir)
}
// testWebsocket starts global store binary with HTTP server
// and validates that it can store and retrieve data.
// If put is false, no data will be stored, only retrieved,
// giving the possibility to check if data is present in the
// storage directory.
func testHTTP(t *testing.T, put bool, args ...string) {
addr := findFreeTCPAddress(t)
testCmd := runGlobalStore(t, append([]string{"http", "--addr", addr}, args...)...)
defer testCmd.Interrupt()
client, err := rpc.DialHTTP("http://" + addr)
if err != nil {
t.Fatal(err)
}
// wait until global store process is started as
// rpc.DialHTTP is actually not connecting
for i := 0; i < 1000; i++ {
_, err = http.DefaultClient.Get("http://" + addr)
if err == nil {
break
}
time.Sleep(10 * time.Millisecond)
}
if err != nil {
t.Fatal(err)
}
store := mockRPC.NewGlobalStore(client)
defer store.Close()
node := store.NewNodeStore(common.HexToAddress("123abc"))
wantKey := "key"
wantValue := "value"
if put {
err = node.Put([]byte(wantKey), []byte(wantValue))
if err != nil {
t.Fatal(err)
}
}
gotValue, err := node.Get([]byte(wantKey))
if err != nil {
t.Fatal(err)
}
if string(gotValue) != wantValue {
t.Errorf("got value %s for key %s, want %s", string(gotValue), wantKey, wantValue)
}
}
// TestWebsocket_InMemory tests in-memory global store that exposes
// WebSocket server.
func TestWebsocket_InMemory(t *testing.T) {
testWebsocket(t, true)
}
// TestWebsocket_Database tests global store with persisted database
// that exposes HTTP server.
func TestWebsocket_Database(t *testing.T) {
dir, err := ioutil.TempDir("", "swarm-global-store-")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
// create a fresh global store
testWebsocket(t, true, "--dir", dir)
// check if data saved by the previous global store instance
testWebsocket(t, false, "--dir", dir)
}
// testWebsocket starts global store binary with WebSocket server
// and validates that it can store and retrieve data.
// If put is false, no data will be stored, only retrieved,
// giving the possibility to check if data is present in the
// storage directory.
func testWebsocket(t *testing.T, put bool, args ...string) {
addr := findFreeTCPAddress(t)
testCmd := runGlobalStore(t, append([]string{"ws", "--addr", addr}, args...)...)
defer testCmd.Interrupt()
var client *rpc.Client
var err error
// wait until global store process is started
for i := 0; i < 1000; i++ {
client, err = rpc.DialWebsocket(context.Background(), "ws://"+addr, "")
if err == nil {
break
}
time.Sleep(10 * time.Millisecond)
}
if err != nil {
t.Fatal(err)
}
store := mockRPC.NewGlobalStore(client)
defer store.Close()
node := store.NewNodeStore(common.HexToAddress("123abc"))
wantKey := "key"
wantValue := "value"
if put {
err = node.Put([]byte(wantKey), []byte(wantValue))
if err != nil {
t.Fatal(err)
}
}
gotValue, err := node.Get([]byte(wantKey))
if err != nil {
t.Fatal(err)
}
if string(gotValue) != wantValue {
t.Errorf("got value %s for key %s, want %s", string(gotValue), wantKey, wantValue)
}
}
// findFreeTCPAddress returns a local address (IP:Port) to which
// global store can listen on.
func findFreeTCPAddress(t *testing.T) (addr string) {
t.Helper()
listener, err := net.Listen("tcp", "")
if err != nil {
t.Fatal(err)
}
defer listener.Close()
return listener.Addr().String()
}
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