seaweedfs/weed/filer/configuration.go

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package filer
import (
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/util"
"os"
"reflect"
"strings"
)
var (
Stores []FilerStore
)
func (f *Filer) LoadConfiguration(config *util.ViperProxy) (isFresh bool) {
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validateOneEnabledStore(config)
// load configuration for default filer store
hasDefaultStoreConfigured := false
for _, store := range Stores {
if config.GetBool(store.GetName() + ".enabled") {
store = reflect.New(reflect.ValueOf(store).Elem().Type()).Interface().(FilerStore)
if err := store.Initialize(config, store.GetName()+"."); err != nil {
glog.Fatalf("failed to initialize store for %s: %+v", store.GetName(), err)
}
isFresh = f.SetStore(store)
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glog.V(0).Infof("configured filer store to %s", store.GetName())
hasDefaultStoreConfigured = true
break
}
}
if !hasDefaultStoreConfigured {
println()
println("Supported filer stores are:")
for _, store := range Stores {
println(" " + store.GetName())
}
os.Exit(-1)
}
// load path-specific filer store here
// f.Store.AddPathSpecificStore(path, store)
storeNames := make(map[string]FilerStore)
for _, store := range Stores {
storeNames[store.GetName()] = store
}
allKeys := config.AllKeys()
for _, key := range allKeys {
if !strings.HasSuffix(key, ".enabled") {
continue
}
key = key[:len(key)-len(".enabled")]
if !strings.Contains(key, ".") {
continue
}
parts := strings.Split(key, ".")
storeName, storeId := parts[0], parts[1]
store, found := storeNames[storeName]
if !found {
continue
}
if !config.GetBool(key + ".enabled") {
continue
}
store = reflect.New(reflect.ValueOf(store).Elem().Type()).Interface().(FilerStore)
if err := store.Initialize(config, key+"."); err != nil {
glog.Fatalf("Failed to initialize store for %s: %+v", key, err)
}
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location := config.GetString(key + ".location")
if location == "" {
glog.Errorf("path-specific filer store needs %s", key+".location")
os.Exit(-1)
}
f.Store.AddPathSpecificStore(location, storeId, store)
glog.V(0).Infof("configure filer %s for %s", store.GetName(), location)
}
return
}
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func validateOneEnabledStore(config *util.ViperProxy) {
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enabledStore := ""
for _, store := range Stores {
if config.GetBool(store.GetName() + ".enabled") {
if enabledStore == "" {
enabledStore = store.GetName()
} else {
glog.Fatalf("Filer store is enabled for both %s and %s", enabledStore, store.GetName())
}
}
}
}