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annotate pkg/wfs/global.go @ 2634:49ce3c11ca72

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WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 13 Mar 2019 18:33:03 +0100
parents
children d7ef169fd0d3
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2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2019 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13
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14 package wfs
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15
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16 import (
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17 "io"
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18 "log"
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19 "os/exec"
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20 )
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21
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22 type (
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23 Downloader interface {
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24 Download(handler func(string, io.Reader) error) error
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25 }
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26
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27 GeoJSONDownloader []string
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28 GMLDownloader []string
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29 )
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30
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31 var GetFeatures = setup()
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32
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33 func setup() func(*Capabilities, string, string) (Downloader, error) {
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34 path, err := exec.LookPath("ogr2ogr")
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35 if err != nil {
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36 log.Println("info: ogr2ogr not installed. Using direct GeoJSON WFS download.")
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37 return GetFeaturesGeoJSON
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38 }
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39 log.Printf("info: ogr2ogr found at %s. Using GML WFS download.\n", path)
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40 return GetFeaturesGML
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41 }
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42
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43 func GetFeaturesGeoJSON(
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44 caps *Capabilities,
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45 featureTypeName string,
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46 sortBy string,
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47 ) (Downloader, error) {
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48 return nil, nil
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49 }
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50
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51 func GetFeaturesGML(
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52 caps *Capabilities,
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53 featureTypeName string,
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54 sortBy string,
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55 ) (Downloader, error) {
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56 return nil, nil
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57 }
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58
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59 func (gjd GeoJSONDownloader) Download(handler func(string, io.Reader)) error {
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60 // TODO: Implement, me!
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61 return nil
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62 }
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63
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64 func (gmd GMLDownloader) Download(handler func(string, io.Reader)) error {
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65 // TODO: Implement, me!
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66 return nil
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67 }