sqlite tile db

tiledb/accessor.go

@@ -14,5 +14,5 @@ type Tile struct {
 type DBAccessor interface {
 	Migrate() error
 	GetTile(layerId int, pos coords.TileCoords) (*Tile, error)
-	SetTile(pos coords.TileCoords, tile *Tile) error
+	SetTile(tile *Tile) error
 }

tiledb/sqlite.go

@@ -1,11 +1,11 @@
 package tiledb
 
 import (
-  "database/sql"
-  _ "github.com/mattn/go-sqlite3"
-  "github.com/sirupsen/logrus"
-  "mapserver/coords"
-  "time"
+	"database/sql"
+	_ "github.com/mattn/go-sqlite3"
+	"github.com/sirupsen/logrus"
+	"mapserver/coords"
+	"time"
 )
 
 const migrateScript = `
@@ -26,17 +26,17 @@ type Sqlite3Accessor struct {
 }
 
 func (db *Sqlite3Accessor) Migrate() error {
-		log.WithFields(logrus.Fields{"filename": db.filename}).Info("Migrating database")
-		start := time.Now()
-		_, err := db.db.Exec(migrateScript)
-		if err != nil {
-			return err
-		}
-		t := time.Now()
-		elapsed := t.Sub(start)
-		log.WithFields(logrus.Fields{"elapsed": elapsed}).Info("Migration completed")
+	log.WithFields(logrus.Fields{"filename": db.filename}).Info("Migrating database")
+	start := time.Now()
+	_, err := db.db.Exec(migrateScript)
+	if err != nil {
+		return err
+	}
+	t := time.Now()
+	elapsed := t.Sub(start)
+	log.WithFields(logrus.Fields{"elapsed": elapsed}).Info("Migration completed")
 
-  	return nil
+	return nil
 }
 
 const getTileQuery = `
@@ -48,39 +48,46 @@ and t.zoom = ?
 `
 
 func (db *Sqlite3Accessor) GetTile(layerId int, pos coords.TileCoords) (*Tile, error) {
-  rows, err := db.db.Query(getTileQuery, layerId, pos.X, pos.Y, pos.Zoom)
-  if err != nil {
-    return nil, err
-  }
+	rows, err := db.db.Query(getTileQuery, layerId, pos.X, pos.Y, pos.Zoom)
+	if err != nil {
+		return nil, err
+	}
 
-  if rows.Next() {
-    var data []byte
-    var mtime int64
+	if rows.Next() {
+		var data []byte
+		var mtime int64
 
-    err = rows.Scan(&data, &mtime)
-    if err != nil {
-      return nil, err
-    }
+		err = rows.Scan(&data, &mtime)
+		if err != nil {
+			return nil, err
+		}
 
-    if data == nil {
-      return nil, nil
-    }
+		if data == nil {
+			return nil, nil
+		}
 
-    mb := Tile{
-      Pos: pos,
-      LayerId: layerId,
-      Data: data,
-      Mtime: mtime,
-    }
+		mb := Tile{
+			Pos:     pos,
+			LayerId: layerId,
+			Data:    data,
+			Mtime:   mtime,
+		}
 
-    return &mb, nil
-  }
+		return &mb, nil
+	}
 
-  return nil, nil
+	return nil, nil
 }
 
-func (db *Sqlite3Accessor) SetTile(pos coords.TileCoords, tile *Tile) error {
-  return nil
+const setTileQuery = `
+insert into tiles(x,y,zoom,layerid,data,mtime)
+values(?, ?, ?, ?, ?, ?)
+on conflict replace
+`
+
+func (db *Sqlite3Accessor) SetTile(tile *Tile) error {
+	_, err := db.db.Query(setTileQuery, tile.Pos.X, tile.Pos.Y, tile.Pos.Zoom, tile.LayerId, tile.Data, tile.Mtime)
+	return err
 }
 
 func NewSqliteAccessor(filename string) (*Sqlite3Accessor, error) {

tiledb/sqlite_test.go

@@ -2,9 +2,9 @@ package tiledb
 
 import (
 	"io/ioutil"
+	"mapserver/coords"
 	"os"
 	"testing"
-	"mapserver/coords"
 )
 
 func TestMigrate(t *testing.T) {
@@ -24,11 +24,18 @@ func TestMigrate(t *testing.T) {
 		panic(err)
 	}
 
-	pos := coords.NewTileCoords(0,0,13)
+	pos := coords.NewTileCoords(0, 0, 13)
 	_, err = db.GetTile(0, pos)
 	if err != nil {
 		panic(err)
 	}
 
+	data := []byte{}
+	tile := Tile{LayerId: 0, Pos: pos, Data: data}
+	err = db.SetTile(&tile)
+
+	if err != nil {
+		panic(err)
+	}
 
 }