load filer conf and match by prefix

weed/filer/filer_conf.go

@@ -0,0 +1,48 @@
+package filer
+
+import (
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/golang/protobuf/proto"
+	"github.com/viant/ptrie"
+)
+
+type FilerConf struct {
+	rules ptrie.Trie
+}
+
+func NewFilerConf(data []byte) (fc *FilerConf) {
+	fc = &FilerConf{
+		rules: ptrie.New(),
+	}
+
+	conf := &filer_pb.FilerConf{}
+	err := proto.UnmarshalText(string(data), conf)
+	if err != nil {
+		glog.Errorf("unable to parse filer conf: %v", err)
+		return
+	}
+
+	fc.doLoadConf(conf)
+	return fc
+}
+
+func (fc *FilerConf) doLoadConf(conf *filer_pb.FilerConf) {
+	for _, location := range conf.Locations {
+		err := fc.rules.Put([]byte(location.LocationPrefix), location)
+		if err != nil {
+			glog.Errorf("put location prefix: %v", err)
+		}
+	}
+}
+
+func (fc *FilerConf) MatchStorageRule(path string) (pathConf *filer_pb.FilerConf_PathConf){
+	fc.rules.MatchPrefix([]byte(path), func(key []byte, value interface{}) bool {
+		pathConf = value.(*filer_pb.FilerConf_PathConf)
+		return true
+	})
+	if pathConf == nil {
+		return &filer_pb.FilerConf_PathConf{}
+	}
+	return pathConf
+}

weed/filer/filer_conf_test.go

@@ -0,0 +1,31 @@
+package filer
+
+import (
+	"testing"
+
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/stretchr/testify/assert"
+	"github.com/viant/ptrie"
+)
+
+func TestFilerConf(t *testing.T) {
+
+	fc := &FilerConf{
+		rules: ptrie.New(),
+	}
+	conf := &filer_pb.FilerConf{Locations: []*filer_pb.FilerConf_PathConf{
+		{
+			LocationPrefix: "/buckets/abc",
+			Collection:     "abc",
+		},
+		{
+			LocationPrefix: "/buckets/abcd",
+			Collection:     "abcd",
+		},
+	}}
+	fc.doLoadConf(conf)
+
+	assert.Equal(t, "abc", fc.MatchStorageRule("/buckets/abc/jasdf").Collection)
+	assert.Equal(t, "abcd", fc.MatchStorageRule("/buckets/abcd/jasdf").Collection)
+
+}