1 files changed, 313 insertions, 0 deletions
diff --git a/p2p/discover/database_test.go b/p2p/discover/database_test.go
new file mode 100644
index 000000000..f327cf73b
--- /dev/null
+++ b/p2p/discover/database_test.go
@@ -0,0 +1,313 @@
+package discover
+
+import (
+	"bytes"
+	"io/ioutil"
+	"net"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+var nodeDBKeyTests = []struct {
+	id    NodeID
+	field string
+	key   []byte
+}{
+	{
+		id:    NodeID{},
+		field: "version",
+		key:   []byte{0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e}, // field
+	},
+	{
+		id:    MustHexID("0x1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
+		field: ":discover",
+		key: []byte{0x6e, 0x3a, // prefix
+			0x1d, 0xd9, 0xd6, 0x5c, 0x45, 0x52, 0xb5, 0xeb, // node id
+			0x43, 0xd5, 0xad, 0x55, 0xa2, 0xee, 0x3f, 0x56, //
+			0xc6, 0xcb, 0xc1, 0xc6, 0x4a, 0x5c, 0x8d, 0x65, //
+			0x9f, 0x51, 0xfc, 0xd5, 0x1b, 0xac, 0xe2, 0x43, //
+			0x51, 0x23, 0x2b, 0x8d, 0x78, 0x21, 0x61, 0x7d, //
+			0x2b, 0x29, 0xb5, 0x4b, 0x81, 0xcd, 0xef, 0xb9, //
+			0xb3, 0xe9, 0xc3, 0x7d, 0x7f, 0xd5, 0xf6, 0x32, //
+			0x70, 0xbc, 0xc9, 0xe1, 0xa6, 0xf6, 0xa4, 0x39, //
+			0x3a, 0x64, 0x69, 0x73, 0x63, 0x6f, 0x76, 0x65, 0x72, // field
+		},
+	},
+}
+
+func TestNodeDBKeys(t *testing.T) {
+	for i, tt := range nodeDBKeyTests {
+		if key := makeKey(tt.id, tt.field); !bytes.Equal(key, tt.key) {
+			t.Errorf("make test %d: key mismatch: have 0x%x, want 0x%x", i, key, tt.key)
+		}
+		id, field := splitKey(tt.key)
+		if !bytes.Equal(id[:], tt.id[:]) {
+			t.Errorf("split test %d: id mismatch: have 0x%x, want 0x%x", i, id, tt.id)
+		}
+		if field != tt.field {
+			t.Errorf("split test %d: field mismatch: have 0x%x, want 0x%x", i, field, tt.field)
+		}
+	}
+}
+
+var nodeDBInt64Tests = []struct {
+	key   []byte
+	value int64
+}{
+	{key: []byte{0x01}, value: 1},
+	{key: []byte{0x02}, value: 2},
+	{key: []byte{0x03}, value: 3},
+}
+
+func TestNodeDBInt64(t *testing.T) {
+	db, _ := newNodeDB("", Version)
+	defer db.close()
+
+	tests := nodeDBInt64Tests
+	for i := 0; i < len(tests); i++ {
+		// Insert the next value
+		if err := db.storeInt64(tests[i].key, tests[i].value); err != nil {
+			t.Errorf("test %d: failed to store value: %v", i, err)
+		}
+		// Check all existing and non existing values
+		for j := 0; j < len(tests); j++ {
+			num := db.fetchInt64(tests[j].key)
+			switch {
+			case j <= i && num != tests[j].value:
+				t.Errorf("test %d, item %d: value mismatch: have %v, want %v", i, j, num, tests[j].value)
+			case j > i && num != 0:
+				t.Errorf("test %d, item %d: value mismatch: have %v, want %v", i, j, num, 0)
+			}
+		}
+	}
+}
+
+func TestNodeDBFetchStore(t *testing.T) {
+	node := &Node{
+		ID:      MustHexID("0x1dd9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
+		IP:      net.IP([]byte{192, 168, 0, 1}),
+		TCPPort: 30303,
+	}
+	inst := time.Now()
+
+	db, _ := newNodeDB("", Version)
+	defer db.close()
+
+	// Check fetch/store operations on a node ping object
+	if stored := db.lastPing(node.ID); stored.Unix() != 0 {
+		t.Errorf("ping: non-existing object: %v", stored)
+	}
+	if err := db.updateLastPing(node.ID, inst); err != nil {
+		t.Errorf("ping: failed to update: %v", err)
+	}
+	if stored := db.lastPing(node.ID); stored.Unix() != inst.Unix() {
+		t.Errorf("ping: value mismatch: have %v, want %v", stored, inst)
+	}
+	// Check fetch/store operations on a node pong object
+	if stored := db.lastPong(node.ID); stored.Unix() != 0 {
+		t.Errorf("pong: non-existing object: %v", stored)
+	}
+	if err := db.updateLastPong(node.ID, inst); err != nil {
+		t.Errorf("pong: failed to update: %v", err)
+	}
+	if stored := db.lastPong(node.ID); stored.Unix() != inst.Unix() {
+		t.Errorf("pong: value mismatch: have %v, want %v", stored, inst)
+	}
+	// Check fetch/store operations on an actual node object
+	if stored := db.node(node.ID); stored != nil {
+		t.Errorf("node: non-existing object: %v", stored)
+	}
+	if err := db.updateNode(node); err != nil {
+		t.Errorf("node: failed to update: %v", err)
+	}
+	if stored := db.node(node.ID); stored == nil {
+		t.Errorf("node: not found")
+	} else if !bytes.Equal(stored.ID[:], node.ID[:]) || !stored.IP.Equal(node.IP) || stored.TCPPort != node.TCPPort {
+		t.Errorf("node: data mismatch: have %v, want %v", stored, node)
+	}
+}
+
+var nodeDBSeedQueryNodes = []struct {
+	node Node
+	pong time.Time
+}{
+	{
+		node: Node{
+			ID: MustHexID("0x01d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
+			IP: []byte{127, 0, 0, 1},
+		},
+		pong: time.Now().Add(-2 * time.Second),
+	},
+	{
+		node: Node{
+			ID: MustHexID("0x02d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
+			IP: []byte{127, 0, 0, 2},
+		},
+		pong: time.Now().Add(-3 * time.Second),
+	},
+	{
+		node: Node{
+			ID: MustHexID("0x03d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
+			IP: []byte{127, 0, 0, 3},
+		},
+		pong: time.Now().Add(-1 * time.Second),
+	},
+}
+
+func TestNodeDBSeedQuery(t *testing.T) {
+	db, _ := newNodeDB("", Version)
+	defer db.close()
+
+	// Insert a batch of nodes for querying
+	for i, seed := range nodeDBSeedQueryNodes {
+		if err := db.updateNode(&seed.node); err != nil {
+			t.Fatalf("node %d: failed to insert: %v", i, err)
+		}
+	}
+	// Retrieve the entire batch and check for duplicates
+	seeds := db.querySeeds(2 * len(nodeDBSeedQueryNodes))
+	if len(seeds) != len(nodeDBSeedQueryNodes) {
+		t.Errorf("seed count mismatch: have %v, want %v", len(seeds), len(nodeDBSeedQueryNodes))
+	}
+	have := make(map[NodeID]struct{})
+	for _, seed := range seeds {
+		have[seed.ID] = struct{}{}
+	}
+	want := make(map[NodeID]struct{})
+	for _, seed := range nodeDBSeedQueryNodes {
+		want[seed.node.ID] = struct{}{}
+	}
+	for id, _ := range have {
+		if _, ok := want[id]; !ok {
+			t.Errorf("extra seed: %v", id)
+		}
+	}
+	for id, _ := range want {
+		if _, ok := have[id]; !ok {
+			t.Errorf("missing seed: %v", id)
+		}
+	}
+	// Make sure the next batch is empty (seed EOF)
+	seeds = db.querySeeds(2 * len(nodeDBSeedQueryNodes))
+	if len(seeds) != 0 {
+		t.Errorf("seed count mismatch: have %v, want %v", len(seeds), 0)
+	}
+}
+
+func TestNodeDBSeedQueryContinuation(t *testing.T) {
+	db, _ := newNodeDB("", Version)
+	defer db.close()
+
+	// Insert a batch of nodes for querying
+	for i, seed := range nodeDBSeedQueryNodes {
+		if err := db.updateNode(&seed.node); err != nil {
+			t.Fatalf("node %d: failed to insert: %v", i, err)
+		}
+	}
+	// Iteratively retrieve the batch, checking for an empty batch on reset
+	for i := 0; i < len(nodeDBSeedQueryNodes); i++ {
+		if seeds := db.querySeeds(1); len(seeds) != 1 {
+			t.Errorf("1st iteration %d: seed count mismatch: have %v, want %v", i, len(seeds), 1)
+		}
+	}
+	if seeds := db.querySeeds(1); len(seeds) != 0 {
+		t.Errorf("reset: seed count mismatch: have %v, want %v", len(seeds), 0)
+	}
+	for i := 0; i < len(nodeDBSeedQueryNodes); i++ {
+		if seeds := db.querySeeds(1); len(seeds) != 1 {
+			t.Errorf("2nd iteration %d: seed count mismatch: have %v, want %v", i, len(seeds), 1)
+		}
+	}
+}
+
+func TestNodeDBPersistency(t *testing.T) {
+	root, err := ioutil.TempDir("", "nodedb-")
+	if err != nil {
+		t.Fatalf("failed to create temporary data folder: %v", err)
+	}
+	defer os.RemoveAll(root)
+
+	var (
+		testKey = []byte("somekey")
+		testInt = int64(314)
+	)
+
+	// Create a persistent database and store some values
+	db, err := newNodeDB(filepath.Join("root", "database"), Version)
+	if err != nil {
+		t.Fatalf("failed to create persistent database: %v", err)
+	}
+	if err := db.storeInt64(testKey, testInt); err != nil {
+		t.Fatalf("failed to store value: %v.", err)
+	}
+	db.close()
+
+	// Reopen the database and check the value
+	db, err = newNodeDB(filepath.Join("root", "database"), Version)
+	if err != nil {
+		t.Fatalf("failed to open persistent database: %v", err)
+	}
+	if val := db.fetchInt64(testKey); val != testInt {
+		t.Fatalf("value mismatch: have %v, want %v", val, testInt)
+	}
+	db.close()
+
+	// Change the database version and check flush
+	db, err = newNodeDB(filepath.Join("root", "database"), Version+1)
+	if err != nil {
+		t.Fatalf("failed to open persistent database: %v", err)
+	}
+	if val := db.fetchInt64(testKey); val != 0 {
+		t.Fatalf("value mismatch: have %v, want %v", val, 0)
+	}
+	db.close()
+}
+
+var nodeDBExpirationNodes = []struct {
+	node Node
+	pong time.Time
+	exp  bool
+}{
+	{
+		node: Node{
+			ID: MustHexID("0x01d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
+			IP: []byte{127, 0, 0, 1},
+		},
+		pong: time.Now().Add(-nodeDBNodeExpiration + time.Minute),
+		exp:  false,
+	}, {
+		node: Node{
+			ID: MustHexID("0x02d9d65c4552b5eb43d5ad55a2ee3f56c6cbc1c64a5c8d659f51fcd51bace24351232b8d7821617d2b29b54b81cdefb9b3e9c37d7fd5f63270bcc9e1a6f6a439"),
+			IP: []byte{127, 0, 0, 2},
+		},
+		pong: time.Now().Add(-nodeDBNodeExpiration - time.Minute),
+		exp:  true,
+	},
+}
+
+func TestNodeDBExpiration(t *testing.T) {
+	db, _ := newNodeDB("", Version)
+	defer db.close()
+
+	// Add all the test nodes and set their last pong time
+	for i, seed := range nodeDBExpirationNodes {
+		if err := db.updateNode(&seed.node); err != nil {
+			t.Fatalf("node %d: failed to insert: %v", i, err)
+		}
+		if err := db.updateLastPong(seed.node.ID, seed.pong); err != nil {
+			t.Fatalf("node %d: failed to update pong: %v", i, err)
+		}
+	}
+	// Expire some of them, and check the rest
+	if err := db.expireNodes(); err != nil {
+		t.Fatalf("failed to expire nodes: %v", err)
+	}
+	for i, seed := range nodeDBExpirationNodes {
+		node := db.node(seed.node.ID)
+		if (node == nil && !seed.exp) || (node != nil && seed.exp) {
+			t.Errorf("node %d: expiration mismatch: have %v, want %v", i, node, seed.exp)
+		}
+	}
+}