commit 20085e6d9a66257770009345d9aaa54ee3c2d1fd Author: eson <9673575+githubcontent@user.noreply.gitee.com> Date: Fri Jul 28 19:04:21 2023 +0800 走 diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ff7ba64 --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +debug_test* + +__debug_* + +fusenrender \ No newline at end of file diff --git a/config.go b/config.go new file mode 100644 index 0000000..1352fe2 --- /dev/null +++ b/config.go @@ -0,0 +1,52 @@ +package fusenrender + +import ( + "fmt" + "io/fs" + "os" + "path/filepath" + "strings" + + "gopkg.in/yaml.v3" +) + +type ConfigServer struct { + ServerID string `yaml:"serverid"` + Host string `yaml:"host"` + Port int `yaml:"port"` +} + +func (cfg *ConfigServer) Address() string { + return fmt.Sprintf("%s:%d", cfg.Host, cfg.Port) +} + +func (cfg *ConfigServer) AddressWith(p int) string { + return fmt.Sprintf("%s:%d", cfg.Host, p) +} + +func LoadConfig(etcpath string) (*ConfigServer, error) { + f, err := os.Open(etcpath) + if err != nil { + return nil, err + } + cfg := ConfigServer{} + err = yaml.NewDecoder(f).Decode(&cfg) + return &cfg, err +} + +func LoadAllConfig(etcpath string) (result []*ConfigServer) { + + filepath.WalkDir(etcpath, func(path string, d fs.DirEntry, err error) error { + if strings.HasSuffix(d.Name(), ".yaml") { + cfg, err := LoadConfig(path) + if err != nil { + panic(err) + } + result = append(result, cfg) + } + + return nil + }) + + return result +} diff --git a/etc/etc_a.yaml b/etc/etc_a.yaml new file mode 100644 index 0000000..d36bbd2 --- /dev/null +++ b/etc/etc_a.yaml @@ -0,0 +1,3 @@ +serverid: "a" +host: "localhost" +port: 5050 diff --git a/etc/etc_b.yaml b/etc/etc_b.yaml new file mode 100644 index 0000000..75cce8a --- /dev/null +++ b/etc/etc_b.yaml @@ -0,0 +1,3 @@ +serverid: "b" +host: "localhost" +port: 5051 diff --git a/etc/etc_c.yaml b/etc/etc_c.yaml new file mode 100644 index 0000000..f128bb8 --- /dev/null +++ b/etc/etc_c.yaml @@ -0,0 +1,3 @@ +serverid: "c" +host: "localhost" +port: 5052 diff --git a/fsm.go b/fsm.go new file mode 100644 index 0000000..6d184ed --- /dev/null +++ b/fsm.go @@ -0,0 +1,202 @@ +package fusenrender + +import ( + "encoding/json" + "fmt" + "io" + "log" + "sync" + "time" + + "github.com/dgraph-io/badger/v3" + "github.com/hashicorp/raft" +) + +type FsmQueue struct { + mu sync.Mutex + queue *Queue + ra *raft.Raft +} + +func NewQueueFSM(datapath string) *FsmQueue { + q, err := NewQueue(datapath) + if err != nil { + panic(err) + } + return &FsmQueue{ + queue: q, + } +} + +const ( + Enqueue raft.LogType = 20 + Dequeue raft.LogType = 21 +) + +func (q *FsmQueue) Put(item *QueueItem) error { + data, err := item.Encode() + if err != nil { + return err + } + return q.PutJsonString(data) +} + +func (q *FsmQueue) PutJsonString(item []byte) error { + future := q.ra.ApplyLog(raft.Log{ + Type: Enqueue, + Data: item, + }, time.Second*15) + + if future.Error() != nil { + return future.Error() + } + + resp := future.Response() + + if resp == nil { + return nil + } + + return resp.(error) +} + +func (q *FsmQueue) Pop(group string) (*QueueItem, error) { + ierr := q.ra.ApplyLog(raft.Log{ + Type: Dequeue, + Data: []byte(group), + }, time.Second*15) + + if ierr.Error() != nil { + return nil, ierr.Error() + } + + switch v := ierr.Response().(type) { + case error: + return nil, v + case *QueueItem: + return v, nil + default: + return nil, fmt.Errorf("unknown %v", v) + } +} + +func (q *FsmQueue) Apply(log *raft.Log) interface{} { + q.mu.Lock() + defer q.mu.Unlock() + + task := &ApplyTask{} + if err := json.Unmarshal(log.Data, task); err != nil { + return err + } + + switch task.Name { + case "enqueue": + return q.queue.Enqueue(task.Data.(*QueueItem)) + case "dequeue": + // log.Data 传入group + item, err := q.queue.Dequeue(string(task.Data.(string))) + if err != nil { + return err + } + return item + default: + return fmt.Errorf("unknown type: %v", log.Type) + } +} + +type QueueSnapshot struct { + Items []*QueueItem +} + +// Persist writes the snapshot to the provided sink. +func (snapshot *QueueSnapshot) Persist(sink raft.SnapshotSink) error { + // The example has been simplified. In a production environment, you would + // need to handle this operation with more care. + return nil +} + +// Release is invoked when the Raft instance is finished with the snapshot. +func (snapshot *QueueSnapshot) Release() { + // Normally you would put any cleanup here. +} + +// Snapshot 返回队列快照 +func (fsm *FsmQueue) Snapshot() (raft.FSMSnapshot, error) { + + var items []*QueueItem + + // 使用 Badger 读取所有队列项 + fsm.queue.db.View(func(txn *badger.Txn) error { + opts := badger.DefaultIteratorOptions + opts.PrefetchValues = false // 只需要key + + it := txn.NewIterator(opts) + defer it.Close() + + for it.Rewind(); it.Valid(); it.Next() { + + err := it.Item().Value(func(val []byte) error { + item := &QueueItem{} + err := json.Unmarshal(val, item) + if err != nil { + return err + } + items = append(items, item) + return nil + }) + if err != nil { + log.Println(err) + } + + } + + return nil + }) + + snapshot := &QueueSnapshot{Items: items} + return snapshot, nil + +} + +// Restore 恢复队列状态 +func (fsm *FsmQueue) Restore(rc io.ReadCloser) error { + + snapshot := &QueueSnapshot{} + if err := json.NewDecoder(rc).Decode(snapshot); err != nil { + return err + } + + // 用快照数据重建队列 + fsm.queue.db.Update(func(txn *badger.Txn) error { + for _, item := range snapshot.Items { + + val, err := item.Encode() + if err != nil { + log.Println(err) + continue + } + + if err := txn.Set(fsm.queue.GetKey(item), val); err != nil { + return err + } + } + return nil + }) + + return nil +} + +func waitForCluster(ra *raft.Raft) { + ticker := time.NewTicker(500 * time.Millisecond) + defer ticker.Stop() + + for range ticker.C { + state := ra.State() + if state == raft.Leader || state == raft.Follower { + log.Println("Raft cluster is running") + return + } else { + log.Println("Still waiting for the cluster to start...") + } + } +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..c6df0b0 --- /dev/null +++ b/go.mod @@ -0,0 +1,35 @@ +module fusenrender + +go 1.20 + +require ( + github.com/dgraph-io/badger/v3 v3.2103.5 + github.com/hashicorp/raft v1.5.0 +) + +require ( + github.com/armon/go-metrics v0.4.1 // indirect + github.com/cespare/xxhash v1.1.0 // indirect + github.com/cespare/xxhash/v2 v2.1.2 // indirect + github.com/dgraph-io/ristretto v0.1.1 // indirect + github.com/dustin/go-humanize v1.0.0 // indirect + github.com/fatih/color v1.13.0 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect + github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 // indirect + github.com/golang/protobuf v1.3.2 // indirect + github.com/golang/snappy v0.0.3 // indirect + github.com/google/flatbuffers v1.12.1 // indirect + github.com/hashicorp/go-hclog v1.5.0 // indirect + github.com/hashicorp/go-immutable-radix v1.0.0 // indirect + github.com/hashicorp/go-msgpack v0.5.5 // indirect + github.com/hashicorp/golang-lru v0.5.0 // indirect + github.com/klauspost/compress v1.12.3 // indirect + github.com/mattn/go-colorable v0.1.12 // indirect + github.com/mattn/go-isatty v0.0.14 // indirect + github.com/pkg/errors v0.9.1 // indirect + go.opencensus.io v0.22.5 // indirect + golang.org/x/net v0.7.0 // indirect + golang.org/x/sys v0.5.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..0ef38c8 --- /dev/null +++ b/go.sum @@ -0,0 +1,240 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ= +github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE= +github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU= +github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= 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h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko= +github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc= +github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE= +github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/circonus-labs/circonus-gometrics v2.3.1+incompatible/go.mod h1:nmEj6Dob7S7YxXgwXpfOuvO54S+tGdZdw9fuRZt25Ag= +github.com/circonus-labs/circonusllhist v0.1.3/go.mod h1:kMXHVDlOchFAehlya5ePtbp5jckzBHf4XRpQvBOLI+I= +github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= +github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= +github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk= +github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk= +github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/dgraph-io/badger/v3 v3.2103.5 h1:ylPa6qzbjYRQMU6jokoj4wzcaweHylt//CH0AKt0akg= +github.com/dgraph-io/badger/v3 v3.2103.5/go.mod h1:4MPiseMeDQ3FNCYwRbbcBOGJLf5jsE0PPFzRiKjtcdw= +github.com/dgraph-io/ristretto v0.1.1 h1:6CWw5tJNgpegArSHpNHJKldNeq03FQCwYvfMVWajOK8= +github.com/dgraph-io/ristretto v0.1.1/go.mod h1:S1GPSBCYCIhmVNfcth17y2zZtQT6wzkzgwUve0VDWWA= +github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 h1:tdlZCpZ/P9DhczCTSixgIKmwPv6+wP5DGjqLYw5SUiA= +github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod 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v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/main.go b/main.go new file mode 100644 index 0000000..c13e9d3 --- /dev/null +++ b/main.go @@ -0,0 +1,88 @@ +package fusenrender + +import ( + "fmt" + "log" + "net" + "os" + "time" + + "github.com/hashicorp/raft" +) + +func main() { + +} + +func StartNode(ServerID string, RaftBind string, serverconfigs []*ConfigServer) *FsmQueue { + fsm := NewQueueFSM(fmt.Sprintf("/tmp/fusenrender/%s", ServerID)) + var retainSnapshotCount = 2 + // var ServerID string = "fs1" + // var RaftBind string = "localhost:5500" + var RaftDir string = fmt.Sprintf("/tmp/raftdir/%s", ServerID) + + // Setup Raft configuration. + config := raft.DefaultConfig() + config.LocalID = raft.ServerID(ServerID) + + // Setup Raft communication. + addr, err := net.ResolveTCPAddr("tcp", RaftBind) + if err != nil { + panic(err) + } + transport, err := raft.NewTCPTransport(RaftBind, addr, 3, 30*time.Second, os.Stderr) + if err != nil { + panic(err) + } + + // Create the snapshot store. This allows the Raft to truncate the log. + snapshots, err := raft.NewFileSnapshotStore(RaftDir, retainSnapshotCount, os.Stderr) + if err != nil { + panic(fmt.Errorf("file snapshot store: %s", err)) + } + + // Create the log store and stable store. + logStore := raft.NewInmemStore() + stableStore := raft.NewInmemStore() + + // Create the Raft system. + fsm.ra, err = raft.NewRaft(config, fsm, logStore, stableStore, snapshots, transport) + if err != nil { + panic(err) + } + + var dup map[string]bool = make(map[string]bool) + var rserver []raft.Server = []raft.Server{ + { + Suffrage: raft.Voter, + ID: config.LocalID, + Address: transport.LocalAddr(), + }, + } + dup[string(config.LocalID)] = true + + for _, cfg := range serverconfigs { + + if _, ok := dup[cfg.ServerID]; !ok { + dup[cfg.ServerID] = true + rserver = append(rserver, raft.Server{ + Suffrage: raft.Voter, + ID: raft.ServerID(cfg.ServerID), + Address: raft.ServerAddress(cfg.Address()), + }) + } + } + + configuration := raft.Configuration{ + Servers: rserver, + } + + fu := fsm.ra.BootstrapCluster(configuration) + if err := fu.Error(); err != nil { + log.Println(err) + } + + waitForCluster(fsm.ra) + + return fsm +} diff --git a/main_test.go b/main_test.go new file mode 100644 index 0000000..bd649c4 --- /dev/null +++ b/main_test.go @@ -0,0 +1,7 @@ +package fusenrender + +import "testing" + +func TestMain(t *testing.T) { + main() +} diff --git a/queue.go b/queue.go new file mode 100644 index 0000000..6f31e5a --- /dev/null +++ b/queue.go @@ -0,0 +1,99 @@ +package fusenrender + +import ( + "encoding/json" + "fmt" + "log" + "time" + + "github.com/dgraph-io/badger/v3" +) + +type ApplyTask struct { + Name string `json:"name"` + Data any `json:"data"` +} + +type QueueItem struct { + Group string `json:"group"` // 组名 + Priority uint32 `json:"priority"` // 处理的优先级 + CreateAt time.Time `json:"create_at"` // 创建时间 统一utc + Data any `json:"data"` // 操作的数据结构 +} + +func (item *QueueItem) Encode() ([]byte, error) { + val, err := json.Marshal(item) + if err != nil { + return nil, err + } + return val, nil +} + +type Queue struct { + db *badger.DB +} + +func NewQueue(datapath string) (*Queue, error) { + + opts := badger.DefaultOptions(datapath) + + db, err := badger.Open(opts) + if err != nil { + return nil, err + } + + return &Queue{ + db: db, + }, nil + +} + +func (q *Queue) GetKey(item *QueueItem) []byte { + return []byte(fmt.Sprintf("%s_%d_%d", item.Group, -item.Priority, item.CreateAt.UTC().Unix())) +} + +func (q *Queue) Enqueue(item *QueueItem) error { + // Badger存储 + + val, err := json.Marshal(item) + if err != nil { + return err + } + + err = q.db.Update(func(txn *badger.Txn) error { + return txn.Set([]byte(q.GetKey(item)), val) + }) + + return err +} + +func (q *Queue) Dequeue(group string) (*QueueItem, error) { + + var item *QueueItem + prefix := []byte(fmt.Sprintf("%s_", group)) + + err := q.db.Update(func(txn *badger.Txn) error { + + it := txn.NewIterator(badger.DefaultIteratorOptions) + defer it.Close() + + it.Seek(prefix) + if !it.ValidForPrefix(prefix) { + return nil + } + + itemKey := it.Item().Key() + err := it.Item().Value(func(val []byte) error { + item := &QueueItem{} + return json.Unmarshal(val, item) + }) + if err != nil { + log.Println(err) + } + + return txn.Delete(itemKey) + + }) + + return item, err +} diff --git a/queue_test.go b/queue_test.go new file mode 100644 index 0000000..addb3fe --- /dev/null +++ b/queue_test.go @@ -0,0 +1,34 @@ +package fusenrender + +import ( + "log" + "testing" + "time" +) + +func TestQueue(t *testing.T) { + q, err := NewQueue("/tmp/fusenrender") + if err != nil { + panic(err) + } + + group := "fusen" + + q.Enqueue(&QueueItem{ + Group: group, + Priority: 1, + CreateAt: time.Now(), + Data: nil, + }) + + q.Enqueue(&QueueItem{ + Group: group, + Priority: 2, + CreateAt: time.Now(), + Data: nil, + }) + + log.Println(q.Dequeue(group)) + log.Println(q.Dequeue(group)) + log.Println(q.Dequeue(group)) +} diff --git a/start_test.go b/start_test.go new file mode 100644 index 0000000..ca0797a --- /dev/null +++ b/start_test.go @@ -0,0 +1,91 @@ +package fusenrender_test + +import ( + "fusenrender" + "log" + "testing" + "time" +) + +func TestStartNodeA(t *testing.T) { + svc, err := fusenrender.LoadConfig("etc/etc_a.yaml") + if err != nil { + panic(err) + } + + item := &fusenrender.QueueItem{ + Group: "test", + Priority: uint32(1), + CreateAt: time.Now(), + Data: "a", + } + + a := fusenrender.StartNode(svc.ServerID, svc.Address(), fusenrender.LoadAllConfig("etc")) + + ticker := time.NewTicker(2 * time.Second) + defer ticker.Stop() + + for range ticker.C { + // 每2秒执行一次 + err := a.Put(item) + if err != nil { + log.Println(err) + } + } + + select {} +} + +func TestStartNodeB(t *testing.T) { + svc, err := fusenrender.LoadConfig("etc/etc_b.yaml") + if err != nil { + panic(err) + } + + item := &fusenrender.QueueItem{ + Group: "test", + Priority: uint32(1), + CreateAt: time.Now(), + Data: "b", + } + + b := fusenrender.StartNode(svc.ServerID, svc.Address(), fusenrender.LoadAllConfig("etc")) + ticker := time.NewTicker(2 * time.Second) + defer ticker.Stop() + + for range ticker.C { + // 每2秒执行一次 + err := b.Put(item) + if err != nil { + log.Println(err) + } + } + + select {} + +} + +func TestStartNodeC(t *testing.T) { + + svc, err := fusenrender.LoadConfig("etc/etc_c.yaml") + if err != nil { + panic(err) + } + + c := fusenrender.StartNode(svc.ServerID, svc.Address(), fusenrender.LoadAllConfig("etc")) + + ticker := time.NewTicker(2 * time.Second) + defer ticker.Stop() + + for range ticker.C { + item, err := c.Pop("test") + if err != nil { + panic(err) + } + log.Println(item) + + if item == nil { + log.Println("empty") + } + } +}