[WIP] Badger datastore

package.json

@@ -465,10 +465,10 @@
       "version": "1.1.11"
     },
     {
-      "author": "whyrusleeping",
-      "hash": "QmWRCn8vruNAzHx8i6SAXinuheRitKEGu8c7m26stKvsYx",
-      "name": "go-testutil",
-      "version": "1.1.11"
+      "author": "magik6k",
+      "hash": "QmRh9Udeo8qCe4XKCSA2NUunTZbFvbc5d44E5wTZPFf3Fg",
+      "name": "go-ds-badger",
+      "version": "0.2.1"
     }
   ],
   "gxVersion": "0.10.0",

repo/config/profile.go

@@ -41,4 +41,16 @@ var ConfigProfiles = map[string]func(*Config) error{
 		c.Discovery.MDNS.Enabled = false
 		return nil
 	},
+	"badgerds": func(c *Config) error {
+		c.Datastore.Spec = map[string]interface{}{
+			"type":   "measure",
+			"prefix": "badger.datastore",
+			"child": map[string]interface{}{
+				"type":       "badgerds",
+				"path":       "badgerds",
+				"syncWrites": true,
+			},
+		}
+		return nil
+	},
 }

repo/fsrepo/datastores.go

@@ -4,16 +4,20 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"os"
 	"path/filepath"
 	"sort"
 
 	repo "github.com/ipfs/go-ipfs/repo"
 
-	levelds "gx/ipfs/QmPdvXuXWAR6gtxxqZw42RtSADMwz4ijVmYHGS542b6cMz/go-ds-leveldb"
 	measure "gx/ipfs/QmSb95iHExSSb47zpmyn5CyY5PZidVWSjyKyDqgYQrnKor/go-ds-measure"
 	flatfs "gx/ipfs/QmUTshC2PP4ZDqkrFfDU4JGJFMWjYnunxPgkQ6ZCA2hGqh/go-ds-flatfs"
+
 	ds "gx/ipfs/QmVSase1JP7cq9QkPT46oNwdp9pT6kBkG3oqS14y3QcZjG/go-datastore"
 	mount "gx/ipfs/QmVSase1JP7cq9QkPT46oNwdp9pT6kBkG3oqS14y3QcZjG/go-datastore/syncmount"
+
+	levelds "gx/ipfs/QmPdvXuXWAR6gtxxqZw42RtSADMwz4ijVmYHGS542b6cMz/go-ds-leveldb"
+	badgerds "gx/ipfs/QmRh9Udeo8qCe4XKCSA2NUunTZbFvbc5d44E5wTZPFf3Fg/go-ds-badger"
 	ldbopts "gx/ipfs/QmbBhyDKsY4mbY6xsKt3qu9Y7FPvMJ6qbD8AMjYYvPRw1g/goleveldb/leveldb/opt"
 )
 
@@ -55,12 +59,13 @@ var datastores map[string]ConfigFromMap
 
 func init() {
 	datastores = map[string]ConfigFromMap{
-		"mount":   MountDatastoreConfig,
-		"flatfs":  FlatfsDatastoreConfig,
-		"levelds": LeveldsDatastoreConfig,
-		"mem":     MemDatastoreConfig,
-		"log":     LogDatastoreConfig,
-		"measure": MeasureDatastoreConfig,
+		"mount":    MountDatastoreConfig,
+		"flatfs":   FlatfsDatastoreConfig,
+		"levelds":  LeveldsDatastoreConfig,
+		"badgerds": BadgerdsDatastoreConfig,
+		"mem":      MemDatastoreConfig,
+		"log":      LogDatastoreConfig,
+		"measure":  MeasureDatastoreConfig,
 	}
 }
 
@@ -333,3 +338,57 @@ func (c measureDatastoreConfig) Create(path string) (repo.Datastore, error) {
 	}
 	return measure.New(c.prefix, child), nil
 }
+
+type badgerdsDatastoreConfig struct {
+	path       string
+	syncWrites bool
+}
+
+// BadgerdsDatastoreConfig returns a configuration stub for a badger datastore
+// from the given parameters
+func BadgerdsDatastoreConfig(params map[string]interface{}) (DatastoreConfig, error) {
+	var c badgerdsDatastoreConfig
+	var ok bool
+
+	c.path, ok = params["path"].(string)
+	if !ok {
+		return nil, fmt.Errorf("'path' field is missing or not string")
+	}
+
+	sw, ok := params["syncWrites"]
+	if !ok {
+		c.syncWrites = true
+	} else {
+		if swb, ok := sw.(bool); ok {
+			c.syncWrites = swb
+		} else {
+			return nil, fmt.Errorf("'syncWrites' field was not a boolean")
+		}
+	}
+
+	return &c, nil
+}
+
+func (c *badgerdsDatastoreConfig) DiskSpec() DiskSpec {
+	return map[string]interface{}{
+		"type": "badgerds",
+		"path": c.path,
+	}
+}
+
+func (c *badgerdsDatastoreConfig) Create(path string) (repo.Datastore, error) {
+	p := c.path
+	if !filepath.IsAbs(p) {
+		p = filepath.Join(path, p)
+	}
+
+	err := os.MkdirAll(p, 0755)
+	if err != nil {
+		return nil, err
+	}
+
+	defopts := badgerds.DefaultOptions
+	defopts.SyncWrites = c.syncWrites
+
+	return badgerds.NewDatastore(p, &defopts)
+}