diff options
| -rw-r--r-- | go.mod | 1 | ||||
| -rw-r--r-- | go.sum | 2 | ||||
| -rw-r--r-- | weed/command/scaffold.go | 2 | ||||
| -rw-r--r-- | weed/sequence/snowflake_sequencer.go | 43 | ||||
| -rw-r--r-- | weed/server/master_server.go | 8 |
5 files changed, 55 insertions, 1 deletions
@@ -13,6 +13,7 @@ require ( github.com/Shopify/sarama v1.23.1 github.com/aws/aws-sdk-go v1.34.30 github.com/buraksezer/consistent v0.0.0-20191006190839-693edf70fd72 + github.com/bwmarrin/snowflake v0.3.0 github.com/cespare/xxhash v1.1.0 github.com/chrislusf/raft v1.0.4 github.com/coreos/go-semver v0.3.0 // indirect @@ -141,6 +141,8 @@ github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 h1:DDGfHa7BWjL4Yn github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4= github.com/buraksezer/consistent v0.0.0-20191006190839-693edf70fd72 h1:fUmDBbSvv1uOzo/t8WaxZMVb7BxJ8JECo5lGoR9c5bA= github.com/buraksezer/consistent v0.0.0-20191006190839-693edf70fd72/go.mod h1:OEE5igu/CDjGegM1Jn6ZMo7R6LlV/JChAkjfQQIRLpg= +github.com/bwmarrin/snowflake v0.3.0 h1:xm67bEhkKh6ij1790JB83OujPR5CzNe8QuQqAgISZN0= +github.com/bwmarrin/snowflake v0.3.0/go.mod h1:NdZxfVWX+oR6y2K0o6qAYv6gIOP9rjG0/E9WsDpxqwE= github.com/casbin/casbin/v2 v2.1.2/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n9yuLkIJQ= github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM= github.com/census-instrumentation/opencensus-proto v0.2.0 h1:LzQXZOgg4CQfE6bFvXGM30YZL1WW/M337pXml+GrcZ4= diff --git a/weed/command/scaffold.go b/weed/command/scaffold.go index e990bb3ea..52b547563 100644 --- a/weed/command/scaffold.go +++ b/weed/command/scaffold.go @@ -506,7 +506,7 @@ default = "localhost:8888" # used by maintenance scripts if the scripts needs [master.sequencer] -type = "raft" # Choose [raft|etcd] type for storing the file id sequence +type = "raft" # Choose [raft|etcd|snowflake] type for storing the file id sequence # when sequencer.type = etcd, set listen client urls of etcd cluster that store file id sequence # example : http://127.0.0.1:2379,http://127.0.0.1:2389 sequencer_etcd_urls = "http://127.0.0.1:2379" diff --git a/weed/sequence/snowflake_sequencer.go b/weed/sequence/snowflake_sequencer.go new file mode 100644 index 000000000..d6479fc68 --- /dev/null +++ b/weed/sequence/snowflake_sequencer.go @@ -0,0 +1,43 @@ +package sequence + +import ( + "fmt" + "hash/fnv" + + "github.com/bwmarrin/snowflake" +) + +// a simple snowflake Sequencer +type SnowflakeSequencer struct { + node *snowflake.Node +} + +func NewSnowflakeSequencer(nodeid string) (*SnowflakeSequencer, error) { + node, err := snowflake.NewNode(int64(hash(nodeid) & 0x3ff)) + if err != nil { + fmt.Println(err) + return nil, err + } + + sequencer := &SnowflakeSequencer{node: node} + return sequencer, nil +} + +func hash(s string) uint32 { + h := fnv.New32a() + h.Write([]byte(s)) + return h.Sum32() +} + +func (m *SnowflakeSequencer) NextFileId(count uint64) uint64 { + return uint64(m.node.Generate().Int64()) +} + +// ignore setmax as we are snowflake +func (m *SnowflakeSequencer) SetMax(seenValue uint64) { +} + +// return a new id as no Peek is stored +func (m *SnowflakeSequencer) Peek() uint64 { + return uint64(m.node.Generate().Int64()) +} diff --git a/weed/server/master_server.go b/weed/server/master_server.go index 9404081b4..f5bad53fa 100644 --- a/weed/server/master_server.go +++ b/weed/server/master_server.go @@ -277,6 +277,14 @@ func (ms *MasterServer) createSequencer(option *MasterOption) sequence.Sequencer glog.Error(err) seq = nil } + case "snowflake": + var err error + glog.V(0).Infof("use a snowfalke seq id, nodeid %s:%d", option.Host, option.Port) + seq, err = sequence.NewSnowflakeSequencer(fmt.Sprintf("%s:%d", option.Host, option.Port)) + if err != nil { + glog.Error(err) + seq = nil + } default: seq = sequence.NewMemorySequencer() } |