mirror of
https://github.com/hanzoai/s3.git
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zooqueen
dd74d3e6d6
hanzoai/s3 was an AGPL-3.0 MinIO fork whose network-copyleft blocks embedding
and reselling as a managed service. Replace it wholesale with a fork of
SeaweedFS (github.com/seaweedfs/seaweedfs, Apache-2.0, Go) which ships a
built-in S3 gateway + Filer.
- License: AGPL-3.0 -> Apache-2.0 (upstream LICENSE kept verbatim, incl.
"Copyright 2025 Chris Lu"); NOTICE added crediting SeaweedFS. No AGPL/BUSL/
SSPL/GPL or enterprise ("ee") files remain.
- Module: go.mod path set to github.com/hanzoai/s3 with a self-replace
(replace github.com/seaweedfs/seaweedfs => ./) so the ~1800 internal Go files
keep their upstream import paths with zero churn. Internal identifiers and
import paths are intentionally NOT renamed.
- CLI rebrand: the binary is built as `s3` (was `weed`); root usage, per-command
help/usage/flag strings, shell autocomplete program name, and the product name
in CLI output now read "Hanzo S3" / `s3`. Users never see `weed`.
(e.g. `s3 server`, `s3 filer`, `s3 master`, `s3 volume`, `s3 s3`, `s3 mount`.)
- Build: `make` (or `go build -o s3 ./weed`) builds the `s3` binary green;
`cmd/weed-db` and `cmd/weed-sql` also build; `go vet ./weed/command/` clean.
- README/LLM.md rewritten for Hanzo S3; AGENTS.md/CLAUDE.md symlinks preserved.
- Dropped a 33MB prebuilt Mach-O `stress` binary upstream had committed; `.gitignore`
updated to ignore the `s3` build output.
103 lines
3.9 KiB
Go
103 lines
3.9 KiB
Go
package pub_balancer
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import (
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cmap "github.com/orcaman/concurrent-map/v2"
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"github.com/seaweedfs/seaweedfs/weed/mq/topic"
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"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
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)
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const (
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MaxPartitionCount = 8 * 9 * 5 * 7 //2520
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LockBrokerBalancer = "broker_balancer"
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)
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// PubBalancer collects stats from all brokers.
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//
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// When publishers wants to create topics, it picks brokers to assign the topic partitions.
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// When consumers wants to subscribe topics, it tells which brokers are serving the topic partitions.
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//
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// When a partition needs to be split or merged, or a partition needs to be moved to another broker,
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// the balancer will let the broker tell the consumer instance to stop processing the partition.
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// The existing consumer instance will flush the internal state, and then stop processing.
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// Then the balancer will tell the brokers to start sending new messages in the new/moved partition to the consumer instances.
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//
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// Failover to standby consumer instances:
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//
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// A consumer group can have min and max number of consumer instances.
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// For consumer instances joined after the max number, they will be in standby mode.
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//
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// When a consumer instance is down, the broker will notice this and inform the balancer.
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// The balancer will then tell the broker to send the partition to another standby consumer instance.
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type PubBalancer struct {
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Brokers cmap.ConcurrentMap[string, *BrokerStats] // key: broker address
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// Collected from all brokers when they connect to the broker leader
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TopicToBrokers cmap.ConcurrentMap[string, *PartitionSlotToBrokerList] // key: topic name
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OnPartitionChange func(topic *schema_pb.Topic, assignments []*mq_pb.BrokerPartitionAssignment)
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}
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func NewPubBalancer() *PubBalancer {
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return &PubBalancer{
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Brokers: cmap.New[*BrokerStats](),
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TopicToBrokers: cmap.New[*PartitionSlotToBrokerList](),
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}
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}
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func (balancer *PubBalancer) AddBroker(broker string) (brokerStats *BrokerStats) {
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var found bool
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brokerStats, found = balancer.Brokers.Get(broker)
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if !found {
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brokerStats = NewBrokerStats()
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if !balancer.Brokers.SetIfAbsent(broker, brokerStats) {
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brokerStats, _ = balancer.Brokers.Get(broker)
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}
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}
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balancer.onPubAddBroker(broker, brokerStats)
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return brokerStats
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}
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func (balancer *PubBalancer) RemoveBroker(broker string, stats *BrokerStats) {
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balancer.Brokers.Remove(broker)
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// update TopicToBrokers
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for _, topic := range stats.Topics {
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partitionSlotToBrokerList, found := balancer.TopicToBrokers.Get(topic.String())
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if !found {
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continue
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}
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pickedBroker := pickBrokers(balancer.Brokers, 1)
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if len(pickedBroker) == 0 {
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partitionSlotToBrokerList.RemoveBroker(broker)
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} else {
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partitionSlotToBrokerList.ReplaceBroker(broker, pickedBroker[0])
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}
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}
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balancer.onPubRemoveBroker(broker, stats)
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}
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func (balancer *PubBalancer) OnBrokerStatsUpdated(broker string, brokerStats *BrokerStats, receivedStats *mq_pb.BrokerStats) {
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brokerStats.UpdateStats(receivedStats)
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// update TopicToBrokers
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for _, topicPartitionStats := range receivedStats.Stats {
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topicKey := topic.FromPbTopic(topicPartitionStats.Topic).String()
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partition := topicPartitionStats.Partition
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partitionSlotToBrokerList, found := balancer.TopicToBrokers.Get(topicKey)
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if !found {
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partitionSlotToBrokerList = NewPartitionSlotToBrokerList(MaxPartitionCount)
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if !balancer.TopicToBrokers.SetIfAbsent(topicKey, partitionSlotToBrokerList) {
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partitionSlotToBrokerList, _ = balancer.TopicToBrokers.Get(topicKey)
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}
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}
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partitionSlotToBrokerList.AddBroker(partition, broker, topicPartitionStats.Follower)
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}
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}
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// OnPubAddBroker is called when a broker is added for a publisher coordinator
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func (balancer *PubBalancer) onPubAddBroker(broker string, brokerStats *BrokerStats) {
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}
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// OnPubRemoveBroker is called when a broker is removed for a publisher coordinator
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func (balancer *PubBalancer) onPubRemoveBroker(broker string, brokerStats *BrokerStats) {
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}
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