Mercurial > gemma

annotate pkg/wfs/download.go @ 2106:2b72f5e005aa

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
WFS imports: Write get GetFeature URLs into import log.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 04 Feb 2019 15:49:17 +0100
parents 8b7dee291488
children 86c88fc0ff5e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1689
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
1 // This is Free Software under GNU Affero General Public License v >= 3.0.Reader.
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
2 // without warranty, see README.md and license for details.
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
3 //
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
4 // SPDX-License-Identifier: AGPL-3.0-or-later
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
5 // License-Filename: LICENSES/AGPL-3.0.txt
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
6 //
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
7 // Copyright (C) 2018 by via donau
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
8 // – Österreichische Wasserstraßen-Gesellschaft mbH
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
9 // Software engineering by Intevation GmbH
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
10 //
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
11 // Author(s):
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
13
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
14 package wfs
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
15
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
16 import (
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
17 "bufio"
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
18 "encoding/xml"
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
19 "errors"
1614
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
20 "fmt"
1624
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
21 "io"
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
22 "log"
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
23 "net/http"
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
24 "net/url"
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
25 "strconv"
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
26
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
27 "golang.org/x/net/html/charset"
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
28 )
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
29
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
30 var (
1689
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
31 // ErrNoSuchFeatureType is returned when a feature is not supported.
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
32 ErrNoSuchFeatureType = errors.New("No such feature type")
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
33 // ErrGetFeatureNotSupported is returned when GetFeature is not supported.
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
34 ErrGetFeatureNotSupported = errors.New("GetFeature not supported")
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
35 // ErrMethodGetNotSupported is returned when the GET is not supported.
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
36 ErrMethodGetNotSupported = errors.New("GET not supported")
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
37 // ErrNoNumberMatchedFound is returned if feature count cannot be extracted.
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
38 ErrNoNumberMatchedFound = errors.New("No numberMatched attribute found")
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
39 // ErrOutputFormatNotSupported is returned if a output format is
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
40 // not supported.
1616
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
41 ErrOutputFormatNotSupported = errors.New("Output format not supported")
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
42 )
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
43
1689
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
44 // GetCapabilities downloads a capabilities document for a given URL.
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
45 func GetCapabilities(capURL string) (*Capabilities, error) {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
46
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
47 base, err := url.Parse(capURL)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
48 if err != nil {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
49 return nil, err
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
50 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
51 v := url.Values{}
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
52 v.Set("SERVICE", "WFS")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
53 v.Set("REQUEST", "GetCapabilities")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
54 v.Set("ACCEPTVERSIONS", "2.0.0,1.1.0,1.0.0")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
55 base.RawQuery = v.Encode()
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
56
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
57 baseURL := base.String()
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
58 resp, err := http.Get(baseURL)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
59 if err != nil {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
60 return nil, err
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
61 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
62 defer resp.Body.Close()
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
63 caps, err := ParseCapabilities(bufio.NewReader(resp.Body))
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
64 if err == nil {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
65 caps.BaseURL = baseURL
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
66 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
67 return caps, err
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
68 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
69
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
70 func numberFeaturesGET(u *url.URL, featureType, version string) (int, error) {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
71
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
72 v := url.Values{}
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
73 v.Set("SERVICE", "WFS")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
74 v.Set("REQUEST", "GetFeature")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
75 v.Set("resultType", "hits")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
76 v.Set("VERSION", version)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
77 v.Set("TYPENAMES", featureType)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
78
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
79 q := *u
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
80 q.RawQuery = v.Encode()
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
81
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
82 resp, err := http.Get(q.String())
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
83 if err != nil {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
84 return 0, err
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
85 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
86 defer resp.Body.Close()
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
87 dec := xml.NewDecoder(resp.Body)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
88 dec.CharsetReader = charset.NewReaderLabel
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
89
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
90 var result struct {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
91 NumberMatched *int `xml:"numberMatched,attr"`
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
92 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
93
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
94 if err := dec.Decode(&result); err != nil {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
95 return 0, err
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
96 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
97
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
98 if result.NumberMatched == nil {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
99 return 0, ErrNoNumberMatchedFound
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
100 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
101
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
102 return *result.NumberMatched, nil
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
103 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
104
1689
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
105 // GetFeaturesGET constructs a list of URLs to get features
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
106 // for a given feature type from a WFS servers.
1619
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
107 func GetFeaturesGET(
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
108 caps *Capabilities,
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
109 featureTypeName,
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
110 outputFormat string,
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
111 sortBy string,
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
112 ) ([]string, error) {
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
113
1614
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
114 feature := caps.FindFeatureType(featureTypeName)
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
115 if feature == nil {
1619
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
116 return nil, ErrNoSuchFeatureType
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
117 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
118 op := caps.FindOperation("GetFeature")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
119 if op == nil {
1619
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
120 return nil, ErrGetFeatureNotSupported
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
121 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
122
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
123 if op.DCP.HTTP.Get == nil {
1619
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
124 return nil, ErrMethodGetNotSupported
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
125 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
126
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
127 getRaw := op.DCP.HTTP.Get.HRef
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
128 getU, err := url.Parse(getRaw)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
129 if err != nil {
1619
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
130 return nil, err
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
131 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
132 // The URL could be relative so resolve against Capabilities URL.
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
133 if !getU.IsAbs() {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
134 base, err := url.Parse(caps.BaseURL)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
135 if err != nil {
1619
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
136 return nil, err
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
137 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
138 getU = getU.ResolveReference(base)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
139 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
140
1616
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
141 if !op.SupportsOutputFormat(outputFormat) {
1619
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
142 return nil, ErrOutputFormatNotSupported
1616
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
143 }
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
144
1689
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
145 wfsVersion := caps.HighestWFSVersion(WFS200)
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
146
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
147 featuresPerPage, supportsPaging := op.FeaturesPerPage()
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
148
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
149 var numFeatures int
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
150
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
151 if supportsPaging {
2096
8b7dee291488 WFS downloader: Harmonized logging.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1935
diff changeset
152 log.Printf("info: Paging supported with %d feature per page.\n",
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
153 featuresPerPage)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
154
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
155 if !op.SupportsHits() {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
156 supportsPaging = false
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
157 } else {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
158 numFeatures, err = numberFeaturesGET(getU, featureTypeName, wfsVersion)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
159 if err != nil {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
160 log.Printf("error: %v\n", err)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
161 supportsPaging = false
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
162 } else {
2096
8b7dee291488 WFS downloader: Harmonized logging.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1935
diff changeset
163 log.Printf("info: Number of features: %d\n", numFeatures)
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
164 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
165 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
166 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
167
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
168 var downloadURLs []string
1689
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
169 wfs2 := !versionIsLess(wfsVersion, WFS200)
1614
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
170
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
171 addNS := func(v url.Values) {
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
172 if len(feature.Namespaces) == 0 {
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
173 return
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
174 }
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
175 // Only use first namespace
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
176 ns := feature.Namespaces[0]
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
177 if wfs2 {
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
178 v.Set("NAMESPACES", fmt.Sprintf("(%s,%s)", ns.Space, ns.Local))
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
179 } else {
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
180 v.Set("NAMESPACE", fmt.Sprintf("(%s:%s)", ns.Space, ns.Local))
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
181 }
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
182 }
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
183
1616
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
184 addOutputFormat := func(v url.Values) {
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
185 if outputFormat != "" {
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
186 v.Set("outputFormat", outputFormat)
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
187 }
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
188 }
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
189
1619
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
190 addSortBy := func(v url.Values) {
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
191 if sortBy != "" {
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
192 v.Set("sortBy", sortBy)
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
193 }
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
194 }
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
195
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
196 if supportsPaging {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
197 pagedURL := func(ofs, count int) string {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
198 v := url.Values{}
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
199 v.Set("SERVICE", "WFS")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
200 v.Set("REQUEST", "GetFeature")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
201 v.Set("VERSION", wfsVersion)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
202 v.Set("startIndex", strconv.Itoa(ofs))
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
203 if wfs2 {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
204 v.Set("count", strconv.Itoa(count))
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
205 } else {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
206 v.Set("maxFeatures", strconv.Itoa(count))
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
207 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
208 v.Set("TYPENAMES", featureTypeName)
1614
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
209 addNS(v)
1616
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
210 addOutputFormat(v)
1619
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
211 addSortBy(v)
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
212 q := *getU
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
213 q.RawQuery = v.Encode()
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
214 return q.String()
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
215 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
216 if numFeatures <= featuresPerPage {
2096
8b7dee291488 WFS downloader: Harmonized logging.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1935
diff changeset
217 log.Println("info: All features can be fetched in one page.")
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
218 downloadURLs = []string{pagedURL(0, numFeatures)}
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
219 } else {
2096
8b7dee291488 WFS downloader: Harmonized logging.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1935
diff changeset
220 log.Println("info: Features need to be downloaded in pages.")
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
221 for pos := 0; pos < numFeatures; {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
222 var count int
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
223 if rest := numFeatures - pos; rest >= numFeatures {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
224 count = numFeatures
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
225 } else {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
226 count = rest
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
227 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
228 downloadURLs = append(downloadURLs, pagedURL(pos, count))
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
229 pos += count
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
230 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
231 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
232 } else { // No paging support.
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
233 v := url.Values{}
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
234 v.Set("SERVICE", "WFS")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
235 v.Set("REQUEST", "GetFeature")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
236 v.Set("VERSION", wfsVersion)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
237 v.Set("TYPENAMES", featureTypeName)
1614
efc409e330a6 WFS downloader: Propagate namespaces of feature type into GetFeature request.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1608
diff changeset
238 addNS(v)
1616
f59550310143 WFS downloader: Support different feature output formats.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
239 addOutputFormat(v)
1619
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
240 addSortBy(v)
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
241 q := *getU
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
242 q.RawQuery = v.Encode()
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
243 downloadURLs = []string{q.String()}
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
244 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
245
1619
3093bab05c81 WFS downloader: Dump features to stdout for testing purposes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1616
diff changeset
246 return downloadURLs, nil
1608
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
247 }
1624
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
248
2106
2b72f5e005aa WFS imports: Write get GetFeature URLs into import log.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2096
diff changeset
249 func downloadURL(url string, handler func(string, io.Reader) error) error {
1624
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
250 resp, err := http.Get(url)
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
251 if err != nil {
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
252 return err
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
253 }
1626
92da44ba610c WFS downloader: Parse into raw feature collections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1624
diff changeset
254 if resp.StatusCode < 200 || resp.StatusCode > 299 {
92da44ba610c WFS downloader: Parse into raw feature collections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1624
diff changeset
255 return fmt.Errorf("Invalid HTTP status code: %d (%s)",
92da44ba610c WFS downloader: Parse into raw feature collections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1624
diff changeset
256 resp.StatusCode, resp.Status)
92da44ba610c WFS downloader: Parse into raw feature collections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1624
diff changeset
257 }
1624
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
258 defer resp.Body.Close()
2106
2b72f5e005aa WFS imports: Write get GetFeature URLs into import log.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2096
diff changeset
259 return handler(url, resp.Body)
1624
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
260 }
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
261
1689
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
262 // DownloadURLs does the actual GetFeature requests downloads
6caf5cd6249e WFS: Made golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1626
diff changeset
263 // and hands the resulting io.Readers over to the given handler.
2106
2b72f5e005aa WFS imports: Write get GetFeature URLs into import log.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2096
diff changeset
264 func DownloadURLs(urls []string, handler func(string, io.Reader) error) error {
1624
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
265 for _, url := range urls {
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
266 if err := downloadURL(url, handler); err != nil {
1935
73f9e15d0384 WFS downloader: die correctly if an error was detected when downloading features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1689
diff changeset
267 return err
1624
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
268 }
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
269 }
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
270 return nil
943823d03d50 WFS downloader: Started with mapping return features to Go structs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1619
diff changeset
271 }