sds_types.go

package main

import (
	"encoding/binary"
	"io"
	"math"
)

type Zminzmax struct {
	Zmin float64
	Zmax float64
}

type rdsRequest struct {
	TileRequest                                            bool
	FileFormat                                             string
	FileName                                               string
	FileType, FileSubsize                                  int
	FileXSize, FileYSize                                   int
	FileDataSize                                           float64
	FileDataOffset                                         int
	TileXSize, TileYSize, DecXMode, DecYMode, TileX, TileY int
	DecX, DecY                                             int
	Zset                                                   bool
	Subsize                                                int
	SubsizeSet                                             bool
	Transform                                              string
	ColorMap                                               string
	Reader                                                 io.ReadSeeker
	Cxmode                                                 string
	CxmodeSet                                              bool
	OutputFmt                                              string
	Outxsize                                               int     `json:"outxsize"`
	Outysize                                               int     `json:"outysize"`
	Outzsize                                               int     `json:"outzsize"`
	Zmin                                                   float64 `json:"zmin"`
	Zmax                                                   float64 `json:"zmax"`
	Filexstart                                             float64 `json:"filexstart"`
	Filexdelta                                             float64 `json:"filexdelta"`
	Fileystart                                             float64 `json:"fileystart"`
	Fileydelta                                             float64 `json:"fileydelta"`
	Xstart                                                 int     `json:"xstart"`
	Xsize                                                  int     `json:"xsize"`
	Ystart                                                 int     `json:"ystart"`
	Ysize                                                  int     `json:"ysize"`
	X1, X2, Y1, Y2                                         int
}

func (request *rdsRequest) computeYSize() {
	request.FileYSize = int(float64(request.FileDataSize)/bytesPerAtomMap[string(request.FileFormat[1])]) / (request.FileXSize)
	if string(request.FileFormat[0]) == "C" {
		request.FileYSize = request.FileYSize / 2
	}
}

func (request *rdsRequest) computeTileSizes() {
	request.DecX = decimationLookup[request.DecXMode]
	request.DecY = decimationLookup[request.DecYMode]

	request.Xstart = request.TileX * request.TileXSize * request.DecX
	request.Ystart = request.TileY * request.TileYSize * request.DecY
	request.Xsize = int(request.TileXSize * request.DecX)
	request.Ysize = int(request.TileYSize * request.DecY)
	request.Outxsize = request.TileXSize
	request.Outysize = request.TileYSize
}
func (request *rdsRequest) computeRequestSizes() {
	request.Ystart = int(math.Min(float64(request.Y1), float64(request.Y2)))
	request.Xstart = int(math.Min(float64(request.X1), float64(request.X2)))
	request.Xsize = int(math.Abs(float64(request.X2) - float64(request.X1)))
	request.Ysize = int(math.Abs(float64(request.Y2) - float64(request.Y1)))
}

func (request *rdsRequest) processBlueFileHeader() {

	var bluefileheader BlueHeader
	binary.Read(request.Reader, binary.LittleEndian, &bluefileheader)

	request.FileFormat = string(bluefileheader.Format[:])
	request.FileType = int(bluefileheader.File_type)
	request.FileXSize = int(bluefileheader.Subsize)
	request.Filexstart = bluefileheader.Xstart
	request.Filexdelta = bluefileheader.Xdelta
	request.Fileystart = bluefileheader.Ystart
	request.Fileydelta = bluefileheader.Ydelta
	request.FileDataOffset = int(bluefileheader.Data_start)
	request.FileDataSize = bluefileheader.Data_size

}

var zminzmaxFileMap map[string]Zminzmax

var decimationLookup = map[int]int{
	1:  1,
	2:  2,
	3:  4,
	4:  8,
	5:  16,
	6:  32,
	7:  64,
	8:  128,
	9:  256,
	10: 512,
}

var bytesPerAtomMap = map[string]float64{
	"P": .125,
	"B": 1,
	"I": 2,
	"L": 4,
	"F": 4,
	"D": 8,
}

type Location struct {
	LocationName   string `json:"locationName"`
	LocationType   string `json:"locationType"`
	Path           string `json:"path,omitempty"`
	MinioBucket    string `json:"minioBucket,omitempty"`
	Location       string `json:"location,omitempty"`
	MinioAccessKey string `json:"minioAccessKey,omitempty"`
	MinioSecretKey string `json:"minioSecretKey,omitempty"`
	MinioUseSSL    bool   `json:"minioUseSSL,omitempty"`
}

// Configuration Struct for Configuraion File
type Configuration struct {
	Port             int        `json:"port"`
	CacheLocation    string     `json:"cacheLocation"`
	Logfile          string     `json:"logfile"`
	CacheMaxBytes    int64      `json:"cacheMaxBytes"`
	CheckCacheEvery  int        `json:"checkCacheEvery"`
	MaxBytesZminZmax int        `json:"maxBytesZminZmax"`
	LocationDetails  []Location `json:"locationDetails"`
}

type fileMetaData struct {
	Outxsize   int     `json:"outxsize"`
	Outysize   int     `json:"outysize"`
	Outzsize   int     `json:"outzsize"`
	Zmin       float64 `json:"zmin"`
	Zmax       float64 `json:"zmax"`
	Filexstart float64 `json:"filexstart"`
	Filexdelta float64 `json:"filexdelta"`
	Fileystart float64 `json:"fileystart"`
	Fileydelta float64 `json:"fileydelta"`
	Xstart     int     `json:"xstart"`
	Xsize      int     `json:"xsize"`
	Ystart     int     `json:"ystart"`
	Ysize      int     `json:"ysize"`
}