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package pub_balancer
import (
"fmt"
cmap "github.com/orcaman/concurrent-map/v2"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"github.com/stretchr/testify/assert"
"testing"
)
func Test_allocateOneBroker(t *testing.T) {
brokers := cmap.New[*BrokerStats]()
brokers.SetIfAbsent("localhost:17777", &BrokerStats{
TopicPartitionCount: 0,
CpuUsagePercent: 0,
})
tests := []struct {
name string
args args
wantAssignments []*mq_pb.BrokerPartitionAssignment
}{
{
name: "test only one broker",
args: args{
brokers: brokers,
partitionCount: 1,
},
wantAssignments: []*mq_pb.BrokerPartitionAssignment{
{
LeaderBroker: "localhost:17777",
Partition: &mq_pb.Partition{
RingSize: MaxPartitionCount,
RangeStart: 0,
RangeStop: MaxPartitionCount,
},
},
},
},
}
testThem(t, tests)
}
type args struct {
brokers cmap.ConcurrentMap[string, *BrokerStats]
partitionCount int32
}
func testThem(t *testing.T, tests []struct {
name string
args args
wantAssignments []*mq_pb.BrokerPartitionAssignment
}) {
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
gotAssignments := AllocateTopicPartitions(tt.args.brokers, tt.args.partitionCount)
assert.Equal(t, len(tt.wantAssignments), len(gotAssignments))
for i, gotAssignment := range gotAssignments {
assert.Equal(t, tt.wantAssignments[i].LeaderBroker, gotAssignment.LeaderBroker)
assert.Equal(t, tt.wantAssignments[i].Partition.RangeStart, gotAssignment.Partition.RangeStart)
assert.Equal(t, tt.wantAssignments[i].Partition.RangeStop, gotAssignment.Partition.RangeStop)
assert.Equal(t, tt.wantAssignments[i].Partition.RingSize, gotAssignment.Partition.RingSize)
}
})
}
}
func TestEnsureAssignmentsToActiveBrokersX(t *testing.T) {
type args struct {
activeBrokers cmap.ConcurrentMap[string, *BrokerStats]
followerCount int
assignments []*mq_pb.BrokerPartitionAssignment
}
activeBrokers := cmap.New[*BrokerStats]()
activeBrokers.SetIfAbsent("localhost:1", &BrokerStats{})
activeBrokers.SetIfAbsent("localhost:2", &BrokerStats{})
activeBrokers.SetIfAbsent("localhost:3", &BrokerStats{})
activeBrokers.SetIfAbsent("localhost:4", &BrokerStats{})
activeBrokers.SetIfAbsent("localhost:5", &BrokerStats{})
activeBrokers.SetIfAbsent("localhost:6", &BrokerStats{})
lowActiveBrokers := cmap.New[*BrokerStats]()
lowActiveBrokers.SetIfAbsent("localhost:1", &BrokerStats{})
lowActiveBrokers.SetIfAbsent("localhost:2", &BrokerStats{})
singleActiveBroker := cmap.New[*BrokerStats]()
singleActiveBroker.SetIfAbsent("localhost:1", &BrokerStats{})
tests := []struct {
name string
args args
hasChanges bool
}{
{
name: "test empty leader",
args: args{
activeBrokers: activeBrokers,
followerCount: 1,
assignments: []*mq_pb.BrokerPartitionAssignment{
{
LeaderBroker: "",
Partition: &mq_pb.Partition{},
FollowerBroker: "localhost:2",
},
},
},
hasChanges: true,
},
{
name: "test empty follower",
args: args{
activeBrokers: activeBrokers,
followerCount: 1,
assignments: []*mq_pb.BrokerPartitionAssignment{
{
LeaderBroker: "localhost:1",
Partition: &mq_pb.Partition{},
FollowerBroker: "",
},
},
},
hasChanges: true,
},
{
name: "test dead follower",
args: args{
activeBrokers: activeBrokers,
followerCount: 1,
assignments: []*mq_pb.BrokerPartitionAssignment{
{
LeaderBroker: "localhost:1",
Partition: &mq_pb.Partition{},
FollowerBroker: "localhost:200",
},
},
},
hasChanges: true,
},
{
name: "test dead leader and follower",
args: args{
activeBrokers: activeBrokers,
followerCount: 1,
assignments: []*mq_pb.BrokerPartitionAssignment{
{
LeaderBroker: "localhost:100",
Partition: &mq_pb.Partition{},
FollowerBroker: "localhost:200",
},
},
},
hasChanges: true,
},
{
name: "test low active brokers",
args: args{
activeBrokers: lowActiveBrokers,
followerCount: 3,
assignments: []*mq_pb.BrokerPartitionAssignment{
{
LeaderBroker: "localhost:1",
Partition: &mq_pb.Partition{},
FollowerBroker: "localhost:2",
},
},
},
hasChanges: false,
},
{
name: "test low active brokers with one follower",
args: args{
activeBrokers: lowActiveBrokers,
followerCount: 1,
assignments: []*mq_pb.BrokerPartitionAssignment{
{
LeaderBroker: "localhost:1",
Partition: &mq_pb.Partition{},
},
},
},
hasChanges: true,
},
{
name: "test single active broker",
args: args{
activeBrokers: singleActiveBroker,
followerCount: 3,
assignments: []*mq_pb.BrokerPartitionAssignment{
{
LeaderBroker: "localhost:1",
Partition: &mq_pb.Partition{},
FollowerBroker: "localhost:2",
},
},
},
hasChanges: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
fmt.Printf("%v before %v\n", tt.name, tt.args.assignments)
hasChanges := EnsureAssignmentsToActiveBrokers(tt.args.activeBrokers, tt.args.followerCount, tt.args.assignments)
assert.Equalf(t, tt.hasChanges, hasChanges, "EnsureAssignmentsToActiveBrokers(%v, %v, %v)", tt.args.activeBrokers, tt.args.followerCount, tt.args.assignments)
fmt.Printf("%v after %v\n", tt.name, tt.args.assignments)
})
}
}
|
