Mercurial > gemma

annotate pkg/wfs/global.go @ 4166:04876d865528

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Made 'golint' and 'staticcheck' happy with wfs package.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 05 Aug 2019 14:35:54 +0200
parents 2b6f73c30016
children 16259efa828f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
1 // This is Free Software under GNU Affero General Public License v >= 3.0
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
2 // without warranty, see README.md and license for details.
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
3 //
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
4 // SPDX-License-Identifier: AGPL-3.0-or-later
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
5 // License-Filename: LICENSES/AGPL-3.0.txt
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
6 //
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
7 // Copyright (C) 2019 by via donau
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
8 // – Österreichische Wasserstraßen-Gesellschaft mbH
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
9 // Software engineering by Intevation GmbH
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
10 //
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
11 // Author(s):
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
13
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
14 package wfs
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
15
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
16 import (
2711
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
17 "bufio"
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
18 "errors"
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
19 "fmt"
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
20 "io"
2711
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
21 "io/ioutil"
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
22 "log"
2711
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
23 "os"
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
24 "os/exec"
2711
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
25 "path/filepath"
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
26
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
27 "gemma.intevation.de/gemma/pkg/config"
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
28 )
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
29
2702
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
30 var (
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
31 // FormatGeoJSON is a list of MIME types of
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
32 // GeoJSON documents.
2702
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
33 FormatGeoJSON = []string{"geojson", "application/json"}
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
34 // FormatGML is a list of MIME types
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
35 // GML documents.
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
36 FormatGML = []string{
2711
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
37 "application/gml+xml; version=3.2",
2702
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
38 "gml2", "gml3", "gml32",
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
39 "text/xml; subtype=gml/2.1.2",
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
40 "text/xml; subtype=gml/3.1.1",
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
41 "text/xml; subtype=gml/3.2",
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
42 }
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
43 )
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
44
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
45 type (
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
46 // Downloader abstracts the idea of a download function for WFS.
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
47 Downloader interface {
2719
2b6f73c30016 WFS downloader: Add BasicAuth support for downloading. TODO: Use it.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2711
diff changeset
48 Download(user, password string, handler func(string, io.Reader) error) error
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
49 }
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
50
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
51 // GeoJSONDownloader is a Downloader for GeoJSON.
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
52 GeoJSONDownloader []string
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
53 // GMLDownloader is a Downloader for GML.
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
54 GMLDownloader []string
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
55 )
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
56
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
57 // GetFeatures is the default Downloader in this Gemma server.
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
58 var GetFeatures = setup()
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
59
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
60 func setup() func(*Capabilities, string, string) (Downloader, error) {
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
61 path, err := exec.LookPath("ogr2ogr")
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
62 if err != nil {
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
63 log.Println("info: ogr2ogr not installed. Using direct GeoJSON WFS download.")
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
64 return getFeaturesGeoJSON
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
65 }
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
66 log.Printf("info: ogr2ogr found at %s. Using GML WFS download.\n", path)
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
67 return getFeaturesGML
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
68 }
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
69
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
70 func getFeaturesGeoJSON(
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
71 caps *Capabilities,
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
72 featureTypeName string,
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
73 sortBy string,
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
74 ) (Downloader, error) {
2702
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
75 urls, err := GetFeaturesGET(
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
76 caps,
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
77 featureTypeName,
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
78 FormatGeoJSON,
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
79 sortBy)
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
80 return GeoJSONDownloader(urls), err
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
81 }
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
82
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
83 func getFeaturesGML(
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
84 caps *Capabilities,
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
85 featureTypeName string,
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
86 sortBy string,
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
87 ) (Downloader, error) {
2702
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
88 urls, err := GetFeaturesGET(
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
89 caps,
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
90 featureTypeName,
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
91 FormatGML,
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
92 sortBy)
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
93 return GMLDownloader(urls), err
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
94 }
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
95
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
96 // Download is the GeoJSON implementation of the Downloader.
2719
2b6f73c30016 WFS downloader: Add BasicAuth support for downloading. TODO: Use it.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2711
diff changeset
97 func (gjd GeoJSONDownloader) Download(user, password string, handler func(string, io.Reader) error) error {
2b6f73c30016 WFS downloader: Add BasicAuth support for downloading. TODO: Use it.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2711
diff changeset
98 return DownloadURLs(user, password, []string(gjd), handler)
2702
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
99 }
d7ef169fd0d3 WFS downloader: More on downloading GML. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2634
diff changeset
100
2711
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
101 func places(n int) int {
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
102 places := 1
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
103 if n < 0 {
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
104 places++
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
105 n = -n
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
106 }
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
107 for value := 10; n >= value; value *= 10 {
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
108 places++
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
109 }
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
110 return places
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
111 }
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
112
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
113 // Download is GML implementaion of the Downloader.
2719
2b6f73c30016 WFS downloader: Add BasicAuth support for downloading. TODO: Use it.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2711
diff changeset
114 func (gmd GMLDownloader) Download(user, password string, handler func(string, io.Reader) error) error {
2711
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
115
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
116 if len(gmd) == 0 {
4166
04876d865528 Made 'golint' and 'staticcheck' happy with wfs package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2719
diff changeset
117 return errors.New("nothing to download")
2711
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
118 }
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
119
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
120 tmpDir := config.TmpDir()
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
121 dlDir, err := ioutil.TempDir(tmpDir, "wfs-downloads")
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
122 if err != nil {
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
123 return err
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
124 }
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
125 defer os.RemoveAll(dlDir)
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
126 digits := places(len(gmd))
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
127
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
128 var files []string
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
129
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
130 for i, url := range gmd {
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
131 fname := filepath.Join(dlDir, fmt.Sprintf("%0*d.gml", digits, i))
2719
2b6f73c30016 WFS downloader: Add BasicAuth support for downloading. TODO: Use it.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2711
diff changeset
132 if err := downloadURL(user, password, url, func(_ string, r io.Reader) error {
2711
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
133 f, err := os.Create(fname)
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
134 if err != nil {
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
135 return err
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
136 }
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
137 if _, err = io.Copy(f, r); err != nil {
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
138 f.Close()
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
139 return err
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
140 }
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
141 return f.Close()
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
142 }); err != nil {
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
143 return err
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
144 }
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
145 files = append(files, fname)
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
146 }
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
147
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
148 out := filepath.Join(dlDir, "out.geojson")
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
149
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
150 cmd := exec.Command("ogr2ogr", append([]string{"-f", "GeoJSON", out}, files...)...)
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
151
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
152 msg, err := cmd.CombinedOutput()
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
153 if err != nil {
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
154 return fmt.Errorf("ogr2ogr failed: %s", msg)
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
155 }
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
156
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
157 in, err := os.Open(out)
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
158 if err != nil {
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
159 return err
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
160 }
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
161 defer in.Close()
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
162
3956de9b6b32 WFS downloader: Implemented GML download to file, ogr2ogr to GeoJSON.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2702
diff changeset
163 return handler(gmd[0], bufio.NewReader(in))
2634
49ce3c11ca72 WFS downloads: Started with GML based downloads based on installation of ogr2ogr.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
164 }