working tests

db/accessor.go

@@ -5,14 +5,13 @@ import (
 )
 
 type Block struct {
-	pos coords.MapBlockCoords
-	data             []byte
-	mtime            int64
+	Pos coords.MapBlockCoords
+	Data             []byte
+	Mtime            int64
 }
 
 type DBAccessor interface {
 	Migrate() error
 	FindLatestBlocks(mintime int64, limit int) ([]Block, error)
-	FindBlocks(pos1, pos2 coords.MapBlockCoords) ([]Block, error)
-	CountBlocks(pos1, pos2 coords.MapBlockCoords) (int, error)
+	GetBlock(pos coords.MapBlockCoords) (*Block, error)
 }

db/sqlite.go

@@ -6,27 +6,26 @@ import (
 	"github.com/sirupsen/logrus"
 	"mapserver/coords"
 	"time"
-	"errors"
 )
 
 var log *logrus.Entry
 func init(){
-	log = logrus.WithFields(logrus.Fields{"prefix": "db/sqlite.Migrate"})
+	log = logrus.WithFields(logrus.Fields{"prefix": "db/sqlite"})
 }
 
 const migrateScript = `
-alter table blocks add mtime timestamp default NULL;
-update blocks set mtime = current_timestamp;
+alter table blocks add mtime integer default NULL;
+update blocks set mtime = strftime('%s', 'now');
 create index blocks_mtime on blocks(mtime);
 
 CREATE TRIGGER update_blocks_mtime_insert after insert on blocks for each row
 begin
-update blocks set mtime = current_timestamp where pos = new.pos;
+update blocks set mtime = strftime('%s', 'now') where pos = new.pos;
 end;
 
 CREATE TRIGGER update_blocks_mtime_update after update on blocks for each row
 begin
-update blocks set mtime = current_timestamp where pos = old.pos;
+update blocks set mtime = strftime('%s', 'now') where pos = old.pos;
 end;
 `
 
@@ -66,45 +65,45 @@ func (db *Sqlite3Accessor) Migrate() error {
 	return nil
 }
 
+func convertRows(pos int64, data []byte, mtime int64) Block {
+	c := coords.PlainToCoord(pos)
+	return Block{Pos:c, Data:data, Mtime:mtime}
+}
+
 func (db *Sqlite3Accessor) FindLatestBlocks(mintime int64, limit int) ([]Block, error) {
 	return make([]Block, 0), nil
 }
 
-func (db *Sqlite3Accessor) FindBlocks(pos1, pos2 coords.MapBlockCoords) ([]Block, error) {
-	return make([]Block, 0), nil
-}
-
-const countBlockQuery = `
-select count(*) from blocks b
-where b.pos >= ? and b.pos <= ?
+const getBlockQuery = `
+select pos,data,mtime from blocks b where b.pos = ?
 `
 
-func (db *Sqlite3Accessor) CountBlocks(pos1, pos2 coords.MapBlockCoords) (int, error) {
-	ppos1 := coords.CoordToPlain(pos1)
-	ppos2 := coords.CoordToPlain(pos2)
+func (db *Sqlite3Accessor) GetBlock(pos coords.MapBlockCoords) (*Block, error) {
+	ppos := coords.CoordToPlain(pos)
 
-	if ppos1 > ppos2 {
-		ppos1, ppos2 = ppos2, ppos1
-	}
-
-	rows, err := db.db.Query(countBlockQuery, ppos1, ppos2)
+	rows, err := db.db.Query(getBlockQuery, ppos)
 	if err != nil {
-		return 0, err
+		return nil, err
 	}
 
-	if !rows.Next() {
-		return 0, errors.New("No results")
-	}
+	if rows.Next() {
+		var pos int64
+		var data []byte
+		var mtime int64
 
-	var count int
-	err = rows.Scan(&count)
+		err = rows.Scan(&pos, &data, &mtime)
 		if err != nil {
-		return 0, err
+			return nil, err
 		}
 
-	return count, nil
+		mb := convertRows(pos, data, mtime)
+		return &mb, nil
+	}
+
+	return nil, nil
 }
 
+
 func NewSqliteAccessor(filename string) (*Sqlite3Accessor, error) {
 	db, err := sql.Open("sqlite3", filename + "?mode=ro")
 	if err != nil {

db/sqlite_test.go

@@ -112,16 +112,14 @@ func TestMigrateAndQuery(t *testing.T){
     panic(err)
   }
 
-  count, err := a.CountBlocks(
-    coords.NewMapBlockCoords(coords.MinCoord,coords.MinCoord,coords.MinCoord),
-    coords.NewMapBlockCoords(coords.MaxCoord,coords.MaxCoord,coords.MaxCoord))
+  block, err := a.GetBlock(coords.NewMapBlockCoords(0,0,0))
 
   if err != nil {
     panic(err)
   }
 
-  if count <= 0 {
-    t.Fatal("wrong count!")
+  if block == nil {
+    t.Fatal("no data")
   }
 
 }