dbtile

package

v0.0.0-...-0f2305d Latest Latest Go to latest Published: May 25, 2018 License: MIT Imports: 11 Imported by: 0

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Repository

github.com/tristangio/go-mbtiles-server

Links

Open Source Insights

Documentation ¶

Index ¶

func CloseDb()
func DbGet1Tile(z int64, x int64, y int64) (int, []byte, error)
func GetTile(x int64, y int64, z int64, XYZtoEPSG bool) (tile []byte, httpCode int, err error)
func InitDb(sqliteFile string) error
func InitMeta()
func WriteHTTPAnswer(w http.ResponseWriter, r *http.Request, route string, XYZtoEPSG bool)
type DbMap
- func DbGet1TileDetail(z int64, x int64, y int64) (int, *DbMap, error)
type DbMapMeta
- func DbGetMeta() (int, *DbMapMeta, error)
type MapMeta

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func CloseDb ¶

func CloseDb()

CloseDb close connection to remote database Should be called in main with defer keyword

func DbGet1Tile ¶

func DbGet1Tile(z int64, x int64, y int64) (int, []byte, error)

DbGet1Tile get tile data (only pbf image)

func GetTile ¶

func GetTile(x int64, y int64, z int64, XYZtoEPSG bool) (tile []byte, httpCode int, err error)

GetTile Get 1 tile according to x,y,z and XYZtoEPSG conversion

func InitDb ¶

func InitDb(sqliteFile string) error

InitDb connection to remote database

func InitMeta ¶

func InitMeta()

InitMeta init meta attribute : This is necessary to init values used to generate etags and last-modified header

func WriteHTTPAnswer ¶

func WriteHTTPAnswer(w http.ResponseWriter, r *http.Request, route string, XYZtoEPSG bool)

WriteHTTPAnswer http answer to a tile request

Types ¶

type DbMap ¶

type DbMap struct {
	ZoomLevel  int64  `db:"zoom_level" json:"zoom_level"`
	TileColumn int64  `db:"tile_column" json:"tile_column"`
	TileRow    int64  `db:"tile_row" json:"tile_row"`
	TileID     string `db:"tile_id" json:"tile_id"`
	TileData   []byte `db:"tile_data" json:"tile_data,omitempty"` //NOTE: the []byte will be base64 encoded by JSON Marshall (nice)
}

DbMap is map struct that match SQL select

func DbGet1TileDetail ¶

func DbGet1TileDetail(z int64, x int64, y int64) (int, *DbMap, error)

DbGet1TileDetail get tile image + data by x/y coordinate and z zoom level

type DbMapMeta ¶

type DbMapMeta struct {
	Center    string `db:"center" json:"center"`
	Bounds    string `db:"bounds" json:"bounds"`
	Maxzoom   string `db:"maxzoom" json:"maxzoom"`
	Minzoom   string `db:"minzoom" json:"minzoom"`
	Mtime     string `db:"mtime" json:"mtime"`
	MaskLevel string `db:"maskLevel" json:"masklevel"`
	Format    string `db:"format" json:"format"`
	Filesize  string `db:"filesize" json:"filesize"`
	Type      string `db:"type" json:"type"`
}

DbMapMeta Metadata info

func DbGetMeta ¶

func DbGetMeta() (int, *DbMapMeta, error)

DbGetMeta get metadata Note: metadata are not mandatory and can not exist in an mtile sqlite file, so this function maxbe useless

type MapMeta ¶

type MapMeta struct {
	Maxzoom      int64  `json:"maxzoom"`
	Minzoom      int64  `json:"minzoom"`
	EtagPrefix   string `json:"etagprefix"`
	LastModified string `json:"lastmodified"`
}

MapMeta base Metadat info

Source Files ¶

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