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package lock_manager
import (
"testing"
"time"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/stretchr/testify/assert"
)
func TestAddServer(t *testing.T) {
r := NewLockRing(100 * time.Millisecond)
// Add servers
r.AddServer("localhost:8080")
r.AddServer("localhost:8081")
r.AddServer("localhost:8082")
r.AddServer("localhost:8083")
r.AddServer("localhost:8084")
// Verify all servers are present
servers := r.GetSnapshot()
assert.Equal(t, 5, len(servers))
assert.Contains(t, servers, pb.ServerAddress("localhost:8080"))
assert.Contains(t, servers, pb.ServerAddress("localhost:8081"))
assert.Contains(t, servers, pb.ServerAddress("localhost:8082"))
assert.Contains(t, servers, pb.ServerAddress("localhost:8083"))
assert.Contains(t, servers, pb.ServerAddress("localhost:8084"))
// Remove servers
r.RemoveServer("localhost:8084")
r.RemoveServer("localhost:8082")
r.RemoveServer("localhost:8080")
// Wait for all cleanup operations to complete
r.WaitForCleanup()
// Verify only 2 servers remain (localhost:8081 and localhost:8083)
servers = r.GetSnapshot()
assert.Equal(t, 2, len(servers))
assert.Contains(t, servers, pb.ServerAddress("localhost:8081"))
assert.Contains(t, servers, pb.ServerAddress("localhost:8083"))
// Verify cleanup has happened - wait for snapshot interval and check snapshots are compacted
time.Sleep(110 * time.Millisecond)
r.WaitForCleanup()
// Verify snapshot history is cleaned up properly (should have at most 2 snapshots after compaction)
snapshotCount := r.GetSnapshotCount()
assert.LessOrEqual(t, snapshotCount, 2, "Snapshot history should be compacted")
}
func TestLockRing(t *testing.T) {
r := NewLockRing(100 * time.Millisecond)
// Test initial snapshot
r.SetSnapshot([]pb.ServerAddress{"localhost:8080", "localhost:8081"})
assert.Equal(t, 1, r.GetSnapshotCount())
servers := r.GetSnapshot()
assert.Equal(t, 2, len(servers))
assert.Contains(t, servers, pb.ServerAddress("localhost:8080"))
assert.Contains(t, servers, pb.ServerAddress("localhost:8081"))
// Add another server
r.SetSnapshot([]pb.ServerAddress{"localhost:8080", "localhost:8081", "localhost:8082"})
assert.Equal(t, 2, r.GetSnapshotCount())
servers = r.GetSnapshot()
assert.Equal(t, 3, len(servers))
assert.Contains(t, servers, pb.ServerAddress("localhost:8082"))
// Wait for cleanup interval and add another server
time.Sleep(110 * time.Millisecond)
r.WaitForCleanup()
r.SetSnapshot([]pb.ServerAddress{"localhost:8080", "localhost:8081", "localhost:8082", "localhost:8083"})
assert.LessOrEqual(t, r.GetSnapshotCount(), 3)
servers = r.GetSnapshot()
assert.Equal(t, 4, len(servers))
assert.Contains(t, servers, pb.ServerAddress("localhost:8083"))
// Wait for cleanup and verify compaction
time.Sleep(110 * time.Millisecond)
r.WaitForCleanup()
assert.LessOrEqual(t, r.GetSnapshotCount(), 2, "Snapshots should be compacted")
// Add final server
r.SetSnapshot([]pb.ServerAddress{"localhost:8080", "localhost:8081", "localhost:8082", "localhost:8083", "localhost:8084"})
servers = r.GetSnapshot()
assert.Equal(t, 5, len(servers))
assert.Contains(t, servers, pb.ServerAddress("localhost:8084"))
assert.LessOrEqual(t, r.GetSnapshotCount(), 3)
}
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