add shell command to list all collections

weed/wdclient/masterclient_collection.go

@@ -0,0 +1,23 @@
+package wdclient
+
+import (
+	"context"
+	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
+)
+
+func (mc *MasterClient) CollectionDelete(ctx context.Context, collection string) error {
+	return withMasterClient(ctx, mc.currentMaster, mc.grpcDialOption, func(ctx context.Context, client master_pb.SeaweedClient) error {
+		_, err := client.CollectionDelete(ctx, &master_pb.CollectionDeleteRequest{
+			Name: collection,
+		})
+		return err
+	})
+}
+
+func (mc *MasterClient) CollectionList(ctx context.Context) (resp *master_pb.CollectionListResponse, err error) {
+	err = withMasterClient(ctx, mc.currentMaster, mc.grpcDialOption, func(ctx context.Context, client master_pb.SeaweedClient) error {
+		resp, err = client.CollectionList(ctx, &master_pb.CollectionListRequest{})
+		return err
+	})
+	return
+}