feat: add pebbledb

Makefile

@@ -39,6 +39,10 @@ test-badgerdb:
 	@go test $(PACKAGES) -tags badgerdb -v
 .PHONY: test-badgerdb
 
+test-pebble:
+	@echo "--> Running go test"
+	@go test $(PACKAGES) -tags pebbledb -v
+
 test-all:
 	@echo "--> Running go test"
 	@go test $(PACKAGES) -tags cleveldb,boltdb,rocksdb,grocksdb_clean_link,badgerdb -v
@@ -52,7 +56,7 @@ test-all-with-coverage:
 		-race \
 		-coverprofile=coverage.txt \
 		-covermode=atomic \
-		-tags=memdb,goleveldb,cleveldb,boltdb,rocksdb,grocksdb_clean_link,badgerdb \
+		-tags=memdb,goleveldb,cleveldb,boltdb,rocksdb,grocksdb_clean_link,badgerdb,pebbledb \
 		-v
 .PHONY: test-all-with-coverage
 

db.go

@@ -35,6 +35,11 @@ const (
 	RocksDBBackend BackendType = "rocksdb"
 
 	BadgerDBBackend BackendType = "badgerdb"
+
+	// PebbleDBDBBackend represents pebble (uses github.com/cockroachdb/pebble)
+	//   - EXPERIMENTAL
+	//   - use pebbledb build tag (go build -tags pebbledb)
+	PebbleDBBackend BackendType = "pebbledb"
 )
 
 type dbCreator func(name string, dir string) (DB, error)

go.mod

@@ -15,16 +15,37 @@ require (
 )
 
 require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
+	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
+	github.com/prometheus/client_golang v1.12.0 // indirect
+	github.com/prometheus/client_model v0.2.1-0.20210607210712-147c58e9608a // indirect
+	github.com/prometheus/common v0.32.1 // indirect
+	github.com/prometheus/procfs v0.7.3 // indirect
+	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
+)
+
+require (
+	github.com/DataDog/zstd v1.4.5 // indirect
 	github.com/cespare/xxhash v1.1.0 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/cockroachdb/errors v1.8.1 // indirect
+	github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f // indirect
+	github.com/cockroachdb/pebble v1.0.0
+	github.com/cockroachdb/redact v1.0.8 // indirect
+	github.com/cockroachdb/sentry-go v0.6.1-cockroachdb.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgraph-io/ristretto v0.0.3 // indirect
 	github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
-	github.com/klauspost/compress v1.12.3 // indirect
-	github.com/pkg/errors v0.8.1 // indirect
+	github.com/klauspost/compress v1.15.15 // indirect
+	github.com/kr/pretty v0.2.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	golang.org/x/exp v0.0.0-20200513190911-00229845015e // indirect
 	golang.org/x/net v0.18.0 // indirect
 	golang.org/x/sys v0.14.0 // indirect
 	golang.org/x/text v0.14.0 // indirect