tidb: remove tidb dependencies. (pingcap#1068)

* tidb: remove tidb dependencies.

Define multiple main packages for different storage engine, remove `tidb` dependencies.

* *: register store in tidb-server/main.go

tidb-server/main.go

@@ -23,21 +23,28 @@ import (
 	"time"
 
 	"github.com/ngaut/log"
+	"github.com/pingcap/ticlient"
 	"github.com/pingcap/tidb"
 	"github.com/pingcap/tidb/metric"
+	"github.com/pingcap/tidb/store/hbase"
+	"github.com/pingcap/tidb/store/localstore/boltdb"
 	"github.com/pingcap/tidb/tidb-server/server"
 	"github.com/pingcap/tidb/util/printer"
 )
 
 var (
-	store     = flag.String("store", "goleveldb", "registered store name, [hbase, memory, goleveldb, boltdb]")
+	store     = flag.String("store", "goleveldb", "registered store name, [memory, goleveldb, hbase, boltdb, tikv]")
 	storePath = flag.String("path", "/tmp/tidb", "tidb storage path")
 	logLevel  = flag.String("L", "debug", "log level: info, debug, warn, error, fatal")
 	port      = flag.String("P", "4000", "mp server port")
 	lease     = flag.Int("lease", 1, "schema lease seconds, very dangerous to change only if you know what you do")
 )
 
 func main() {
+	tidb.RegisterStore("hbase", hbasekv.Driver{})
+	tidb.RegisterLocalStore("boltdb", boltdb.Driver{})
+	tidb.RegisterStore("tikv", ticlient.Driver{})
+
 	metric.RunMetric(3 * time.Second)
 	printer.PrintTiDBInfo()
 	runtime.GOMAXPROCS(runtime.NumCPU())

tidb.go

@@ -29,7 +29,6 @@ import (
 
 	"github.com/juju/errors"
 	"github.com/ngaut/log"
-	"github.com/pingcap/ticlient"
 	"github.com/pingcap/tidb/ast"
 	"github.com/pingcap/tidb/context"
 	"github.com/pingcap/tidb/domain"
@@ -38,23 +37,17 @@ import (
 	"github.com/pingcap/tidb/parser"
 	"github.com/pingcap/tidb/sessionctx/autocommit"
 	"github.com/pingcap/tidb/sessionctx/variable"
-	"github.com/pingcap/tidb/store/hbase"
 	"github.com/pingcap/tidb/store/localstore"
-	"github.com/pingcap/tidb/store/localstore/boltdb"
 	"github.com/pingcap/tidb/store/localstore/engine"
 	"github.com/pingcap/tidb/store/localstore/goleveldb"
 	"github.com/pingcap/tidb/util/types"
 )
 
 // Engine prefix name
 const (
-	EngineGoLevelDBMemory     = "memory://"
-	EngineGoLevelDBPersistent = "goleveldb://"
-	EngineBoltDB              = "boltdb://"
-	EngineHBase               = "hbase://"
-	EngineTiKV                = "tikv://"
-	defaultMaxRetries         = 30
-	retrySleepInterval        = 500 * time.Millisecond
+	EngineGoLevelDBMemory = "memory://"
+	defaultMaxRetries     = 30
+	retrySleepInterval    = 500 * time.Millisecond
 )
 
 type domainMap struct {
@@ -288,10 +281,6 @@ func init() {
 	// Register default memory and goleveldb storage
 	RegisterLocalStore("memory", goleveldb.MemoryDriver{})
 	RegisterLocalStore("goleveldb", goleveldb.Driver{})
-	RegisterLocalStore("boltdb", boltdb.Driver{})
-	RegisterStore("hbase", hbasekv.Driver{})
-	RegisterStore("tikv", ticlient.Driver{})
-
 	// start pprof handlers
 	if EnablePprof {
 		go http.ListenAndServe(PprofAddr, nil)