Mercurial > gemma

annotate pkg/imports/wx.go @ 2187:7c83b5277c1c

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Import queue: Removed boilerplate code to deserialize jobs from JSON by making it part of the import queue.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 11 Feb 2019 18:35:01 +0100
parents b868cb653c4d
children 02505fcff63c
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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) 2018 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 imports
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15
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16 import (
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17 "context"
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18 "database/sql"
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19 "encoding/json"
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20 "errors"
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21 "fmt"
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22 "io"
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23 "time"
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24
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25 "gemma.intevation.de/gemma/pkg/wfs"
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26 )
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27
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28 // WaterwayAxis is an import job to import
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29 // the waterway axes in form of line string geometries
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30 // and attribute data from a WFS service.
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31 type WaterwayAxis struct {
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32 // URL the GetCapabilities URL of the WFS service.
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33 URL string `json:"url"`
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34 // FeatureType selects the feature type of the WFS service.
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35 FeatureType string `json:"feature-type"`
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36 // SortBy works around misconfigured services to
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37 // establish a sort order to get the features.
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38 SortBy string `json:"sort-by"`
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39 }
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40
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41 // WXJobKind is the import queue type identifier.
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42 const WXJobKind JobKind = "wx"
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43
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44 type wxJobCreator struct{}
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45
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46 func init() {
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47 RegisterJobCreator(WXJobKind, wxJobCreator{})
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48 }
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49
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50 func (wxJobCreator) Description() string { return "waterway axis" }
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51
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52 func (wxJobCreator) AutoAccept() bool { return true }
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53
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54 func (wxJobCreator) Create() Job { return new(WaterwayAxis) }
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55
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56 func (wxJobCreator) Depends() []string {
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57 return []string{
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58 "waterway_axis",
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59 }
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60 }
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61
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62 // StageDone is a NOP for waterway axis imports.
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63 func (wxJobCreator) StageDone(context.Context, *sql.Tx, int64) error {
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64 return nil
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65 }
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66
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67 // CleanUp for waterway axis imports is a NOP.
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68 func (*WaterwayAxis) CleanUp() error { return nil }
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69
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70 type waterwayAxisProperties struct {
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71 ObjNam string `json:"hydro_objnam"`
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72 NObjNnm *string `json:"hydro_nobjnm"`
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73 }
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74
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75 const (
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76 deleteWaterwayAxisSQL = `
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77 WITH resp AS (
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78 SELECT best_utm(area::geometry) AS t,
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79 ST_Transform(area::geometry, best_utm(area::geometry)) AS a
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80 FROM users.responsibility_areas
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81 WHERE country = users.current_user_country()
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82 )
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83 DELETE FROM waterway.waterway_axis
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84 WHERE ST_Covers(
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85 (SELECT a FROM resp),
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86 ST_Transform(wtwaxs::geometry, (SELECT t FROM resp)))
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87 `
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88
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89 insertWaterwayAxisSQL = `
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90 WITH resp AS (
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91 SELECT best_utm(area::geometry) AS t,
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92 ST_Transform(area::geometry, best_utm(area::geometry)) AS a
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93 FROM users.responsibility_areas
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94 WHERE country = users.current_user_country()
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95 )
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96 INSERT INTO waterway.waterway_axis (wtwaxs, objnam, nobjnam)
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97 SELECT ST_Transform(clipped.geom, 4326)::geography, $3, $4 FROM (
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98 SELECT (ST_Dump(
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99 ST_Intersection(
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100 (SELECT a FROM resp),
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101 ST_Transform(
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102 ST_GeomFromWKB($1, $2::integer),
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103 (SELECT t FROM resp)
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104 )
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105 )
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106 )).geom AS geom
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107 ) AS clipped
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108 WHERE clipped.geom IS NOT NULL
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109 `
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110 )
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111
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112 // Do executes the actual waterway axis import.
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113 func (wx *WaterwayAxis) Do(
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114 ctx context.Context,
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115 importID int64,
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116 conn *sql.Conn,
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117 feedback Feedback,
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118 ) (interface{}, error) {
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119
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diff changeset
120 start := time.Now()
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diff changeset
121
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parents: 1677
diff changeset
122 feedback.Info("Import waterway axis")
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parents: 1677
diff changeset
123
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parents: 1677
diff changeset
124 feedback.Info("Loading capabilities from %s", wx.URL)
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parents: 1677
diff changeset
125 caps, err := wfs.GetCapabilities(wx.URL)
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
126 if err != nil {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
127 feedback.Error("Loading capabilities failed: %v", err)
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parents: 1677
diff changeset
128 return nil, err
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parents: 1677
diff changeset
129 }
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parents: 1677
diff changeset
130
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parents: 1677
diff changeset
131 ft := caps.FindFeatureType(wx.FeatureType)
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parents: 1677
diff changeset
132 if ft == nil {
1682
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parents: 1681
diff changeset
133 return nil, fmt.Errorf("Unknown feature type '%s'", wx.FeatureType)
1679
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parents: 1677
diff changeset
134 }
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parents: 1677
diff changeset
135
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fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
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parents: 1696
diff changeset
136 feedback.Info("Found feature type '%s", wx.FeatureType)
fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
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parents: 1696
diff changeset
137
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parents: 1680
diff changeset
138 epsg, err := wfs.CRSToEPSG(ft.DefaultCRS)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
139 if err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
140 feedback.Error("Unsupported CRS name '%s'", ft.DefaultCRS)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
141 return nil, err
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parents: 1680
diff changeset
142 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
143
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fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
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parents: 1696
diff changeset
144 if wx.SortBy != "" {
fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
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parents: 1696
diff changeset
145 feedback.Info("Features will be sorted by '%s'", wx.SortBy)
fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1696
diff changeset
146 }
fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
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parents: 1696
diff changeset
147
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diff changeset
148 urls, err := wfs.GetFeaturesGET(
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parents: 1677
diff changeset
149 caps, wx.FeatureType, "application/json", wx.SortBy)
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parents: 1677
diff changeset
150 if err != nil {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
151 feedback.Error("Cannot create GetFeature URLs. %v", err)
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parents: 1677
diff changeset
152 return nil, err
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parents: 1677
diff changeset
153 }
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parents: 1677
diff changeset
154
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
155 tx, err := conn.BeginTx(ctx, nil)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
156 if err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
157 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
158 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
159 defer tx.Rollback()
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
160
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
161 insertStmt, err := tx.PrepareContext(ctx, insertWaterwayAxisSQL)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
162 if err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
163 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
164 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
165 defer insertStmt.Close()
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
166
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
167 // Delete the old features.
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
168 if _, err := tx.ExecContext(ctx, deleteWaterwayAxisSQL); err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
169 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
170 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
171
1680
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parents: 1679
diff changeset
172 var (
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parents: 1764
diff changeset
173 unsupported = stringCounter{}
1680
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parents: 1679
diff changeset
174 missingProperties int
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
175 badProperties int
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
176 features int
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
177 )
1679
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parents: 1677
diff changeset
178
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2b72f5e005aa WFS imports: Write get GetFeature URLs into import log.
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parents: 1828
diff changeset
179 if err := wfs.DownloadURLs(urls, func(url string, r io.Reader) error {
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parents: 1828
diff changeset
180 feedback.Info("Get features from: '%s'", url)
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parents: 1677
diff changeset
181 rfc, err := wfs.ParseRawFeatureCollection(r)
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parents: 1677
diff changeset
182 if err != nil {
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parents: 1754
diff changeset
183 return fmt.Errorf("parsing GetFeature document failed: %v", err)
1679
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parents: 1677
diff changeset
184 }
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
185 if rfc.CRS != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
186 crsName := rfc.CRS.Properties.Name
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
187 if epsg, err = wfs.CRSToEPSG(crsName); err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
188 feedback.Error("Unsupported CRS: %d", crsName)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
189 return err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
190 }
1679
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
191 }
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parents: 1677
diff changeset
192
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
193 // No features -> ignore.
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parents: 1677
diff changeset
194 if rfc.Features == nil {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
195 return nil
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parents: 1677
diff changeset
196 }
1680
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
197
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509e8728e846 Fixed pre-calculated size of 2D WKB line strings.
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parents: 1682
diff changeset
198 feedback.Info("Using EPSG: %d", epsg)
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parents: 1682
diff changeset
199
1679
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parents: 1677
diff changeset
200 for _, feature := range rfc.Features {
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
201 if feature.Properties == nil || feature.Geometry.Coordinates == nil {
1680
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parents: 1679
diff changeset
202 missingProperties++
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
203 continue
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
204 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
205
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
206 var props waterwayAxisProperties
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
207
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
208 if err := json.Unmarshal(*feature.Properties, &props); err != nil {
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
209 badProperties++
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
210 continue
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
211 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
212
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
213 var nobjnam sql.NullString
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
214 if props.NObjNnm != nil {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
215 nobjnam = sql.NullString{String: *props.NObjNnm, Valid: true}
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
216 }
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
217
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parents: 1677
diff changeset
218 switch feature.Geometry.Type {
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parents: 1677
diff changeset
219 case "LineString":
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parents: 1764
diff changeset
220 var l lineSlice
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
221 if err := json.Unmarshal(*feature.Geometry.Coordinates, &l); err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
222 return err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
223 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
224 if _, err := insertStmt.ExecContext(
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
225 ctx,
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
226 l.asWKB(),
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
227 epsg,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
228 props.ObjNam,
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
229 nobjnam,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
230 ); err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
231 return err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
232 }
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233 features++
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234 case "MultiLineString":
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235 var ls []lineSlice
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236 if err := json.Unmarshal(*feature.Geometry.Coordinates, &ls); err != nil {
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237 return err
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238 }
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239 for _, l := range ls {
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240 if _, err := insertStmt.ExecContext(
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241 ctx,
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242 l.asWKB(),
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243 epsg,
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244 props.ObjNam,
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245 nobjnam,
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246 ); err != nil {
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parents: 1680
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247 return err
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parents: 1680
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248 }
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parents: 1680
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249 features++
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parents: 1680
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250 }
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251 default:
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252 unsupported[feature.Geometry.Type]++
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253 }
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parents: 1677
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254 }
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255 return nil
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parents: 1677
diff changeset
256 }); err != nil {
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257 return nil, err
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parents: 1677
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258 }
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259
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260 if badProperties > 0 {
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261 feedback.Warn("Bad properties: %d", badProperties)
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262 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
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263
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parents: 1679
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264 if missingProperties > 0 {
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parents: 1679
diff changeset
265 feedback.Warn("Missing properties: %d", missingProperties)
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parents: 1679
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266 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
267
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diff changeset
268 if len(unsupported) != 0 {
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diff changeset
269 feedback.Warn("Unsupported types found: %s", unsupported)
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parents: 1677
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270 }
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parents: 1677
diff changeset
271
1828
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parents: 1796
diff changeset
272 if features == 0 {
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parents: 1796
diff changeset
273 err := errors.New("No features found")
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parents: 1796
diff changeset
274 feedback.Error("%v", err)
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parents: 1796
diff changeset
275 return nil, err
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parents: 1796
diff changeset
276 }
1ecfcf46e4da Waterway area/axis: Be more informative if features are bad.
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parents: 1796
diff changeset
277
1681
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parents: 1680
diff changeset
278 if err = tx.Commit(); err == nil {
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parents: 1680
diff changeset
279 feedback.Info("Storing %d features took %s",
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parents: 1680
diff changeset
280 features, time.Since(start))
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parents: 1677
diff changeset
281 }
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
282
1681
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parents: 1680
diff changeset
283 return nil, err
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parents:
diff changeset
284 }