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annotate pkg/imports/wx.go @ 1754:807569b08513

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Import queue: Auto acceptance is now a property of the import kind itself and is not configurable any more.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Thu, 10 Jan 2019 16:19:26 +0100
parents fb05027d93b6
children bb4348ac52ab
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rev   line source
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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 "bytes"
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18 "context"
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19 "database/sql"
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20 "encoding/binary"
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21 "encoding/json"
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22 "errors"
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23 "fmt"
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24 "io"
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25 "math"
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26 "strings"
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27 "time"
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28
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29 "gemma.intevation.de/gemma/pkg/common"
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30 "gemma.intevation.de/gemma/pkg/wfs"
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31 )
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32
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33 // WaterwayAxis is an import job to import
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34 // the waterway axes in form of line string geometries
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35 // and attribute data from a WFS service.
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36 type WaterwayAxis struct {
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37 // URL the GetCapabilities URL of the WFS service.
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38 URL string `json:"url"`
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39 // FeatureType selects the feature type of the WFS service.
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40 FeatureType string `json:"feature-type"`
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41 // SortBy works around misconfigured services to
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42 // establish a sort order to get the features.
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43 SortBy string `json:"sort-by"`
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44 }
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45
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46 // WXJobKind is the import queue type identifier.
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47 const WXJobKind JobKind = "wx"
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48
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49 type wxJobCreator struct{}
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50
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51 func init() {
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52 RegisterJobCreator(WXJobKind, wxJobCreator{})
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53 }
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54
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55 func (wxJobCreator) Description() string { return "waterway axis" }
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56
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57 func (wxJobCreator) AutoAccept() bool { return true }
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58
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59 func (wxJobCreator) Create(_ JobKind, data string) (Job, error) {
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60 wx := new(WaterwayAxis)
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61 if err := common.FromJSONString(data, wx); err != nil {
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62 return nil, err
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63 }
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64 return wx, nil
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65 }
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66
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67 func (wxJobCreator) Depends() []string {
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68 return []string{
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69 "waterway_axis",
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70 }
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71 }
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72
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73 // StageDone is a NOP for waterway axis imports.
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74 func (wxJobCreator) StageDone(context.Context, *sql.Tx, int64) error {
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75 return nil
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76 }
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77
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78 // CleanUp for waterway imports is a NOP.
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79 func (*WaterwayAxis) CleanUp() error { return nil }
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80
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81 type waterwayAxisProperties struct {
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82 ObjNam string `json:"hydro_objnam"`
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83 NObjNnm *string `json:"hydro_nobjnm"`
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84 }
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85
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86 type line [][]float64
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87
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88 const wkbLineString uint32 = 2
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89
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90 func (l line) asWKB() []byte {
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91
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92 size := 1 + 4 + 4 + len(l)*(2*8)
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93
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94 buf := bytes.NewBuffer(make([]byte, 0, size))
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95
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96 binary.Write(buf, binary.LittleEndian, wkbNDR)
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97 binary.Write(buf, binary.LittleEndian, wkbLineString)
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98 binary.Write(buf, binary.LittleEndian, uint32(len(l)))
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99
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100 for _, c := range l {
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101 var lat, lon float64
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102 if len(c) > 0 {
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103 lat = c[0]
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104 }
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105 if len(c) > 1 {
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106 lon = c[1]
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107 }
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108 binary.Write(buf, binary.LittleEndian, math.Float64bits(lat))
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109 binary.Write(buf, binary.LittleEndian, math.Float64bits(lon))
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110 }
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111
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112 return buf.Bytes()
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113 }
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114
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115 const (
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116 deleteWaterwayAxisSQL = `DELETE FROM waterway.waterway_axis`
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117 insertWaterwayAxisSQL = `
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118 INSERT INTO waterway.waterway_axis (wtwaxs, objnam, nobjnam)
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diff changeset
119 VALUES (
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120 ST_Transform(ST_GeomFromWKB($1, $2::integer), 4326)::geography,
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diff changeset
121 $3,
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diff changeset
122 $4
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diff changeset
123 )`
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parents: 1680
diff changeset
124 )
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diff changeset
125
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126 // Do executes the actual waterway exis import.
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127 func (wx *WaterwayAxis) Do(
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diff changeset
128 ctx context.Context,
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129 importID int64,
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130 conn *sql.Conn,
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131 feedback Feedback,
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diff changeset
132 ) (interface{}, error) {
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133
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134 start := time.Now()
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135
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136 feedback.Info("Import waterway axis")
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137
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diff changeset
138 feedback.Info("Loading capabilities from %s", wx.URL)
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139 caps, err := wfs.GetCapabilities(wx.URL)
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140 if err != nil {
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141 feedback.Error("Loading capabilities failed: %v", err)
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142 return nil, err
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143 }
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144
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145 ft := caps.FindFeatureType(wx.FeatureType)
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146 if ft == nil {
1682
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147 return nil, fmt.Errorf("Unknown feature type '%s'", wx.FeatureType)
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148 }
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149
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150 feedback.Info("Found feature type '%s", wx.FeatureType)
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151
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152 epsg, err := wfs.CRSToEPSG(ft.DefaultCRS)
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153 if err != nil {
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154 feedback.Error("Unsupported CRS name '%s'", ft.DefaultCRS)
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155 return nil, err
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156 }
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157
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diff changeset
158 if wx.SortBy != "" {
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diff changeset
159 feedback.Info("Features will be sorted by '%s'", wx.SortBy)
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160 }
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diff changeset
161
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diff changeset
162 urls, err := wfs.GetFeaturesGET(
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163 caps, wx.FeatureType, "application/json", wx.SortBy)
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164 if err != nil {
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diff changeset
165 feedback.Error("Cannot create GetFeature URLs. %v", err)
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166 return nil, err
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167 }
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168
1681
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diff changeset
169 tx, err := conn.BeginTx(ctx, nil)
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diff changeset
170 if err != nil {
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diff changeset
171 return nil, err
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diff changeset
172 }
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diff changeset
173 defer tx.Rollback()
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diff changeset
174
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diff changeset
175 insertStmt, err := tx.PrepareContext(ctx, insertWaterwayAxisSQL)
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diff changeset
176 if err != nil {
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parents: 1680
diff changeset
177 return nil, err
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diff changeset
178 }
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diff changeset
179 defer insertStmt.Close()
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diff changeset
180
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diff changeset
181 // Delete the old features.
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diff changeset
182 if _, err := tx.ExecContext(ctx, deleteWaterwayAxisSQL); err != nil {
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diff changeset
183 return nil, err
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diff changeset
184 }
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diff changeset
185
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diff changeset
186 var (
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diff changeset
187 unsupportedTypes = map[string]int{}
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diff changeset
188 missingProperties int
de8089944b19 Waterway axis import: Started extracting properties from the features.
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diff changeset
189 badProperties int
1681
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diff changeset
190 features int
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
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diff changeset
191 )
1679
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diff changeset
192
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diff changeset
193 if err := wfs.DownloadURLs(urls, func(r io.Reader) error {
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diff changeset
194 rfc, err := wfs.ParseRawFeatureCollection(r)
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diff changeset
195 if err != nil {
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diff changeset
196 return err
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parents: 1677
diff changeset
197 }
1681
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parents: 1680
diff changeset
198 if rfc.CRS != nil {
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parents: 1680
diff changeset
199 crsName := rfc.CRS.Properties.Name
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diff changeset
200 if epsg, err = wfs.CRSToEPSG(crsName); err != nil {
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parents: 1680
diff changeset
201 feedback.Error("Unsupported CRS: %d", crsName)
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parents: 1680
diff changeset
202 return err
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parents: 1680
diff changeset
203 }
1679
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diff changeset
204 }
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parents: 1677
diff changeset
205
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diff changeset
206 // No features -> ignore.
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parents: 1677
diff changeset
207 if rfc.Features == nil {
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diff changeset
208 return nil
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parents: 1677
diff changeset
209 }
1680
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diff changeset
210
1683
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parents: 1682
diff changeset
211 feedback.Info("Using EPSG: %d", epsg)
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parents: 1682
diff changeset
212
1679
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parents: 1677
diff changeset
213 for _, feature := range rfc.Features {
1681
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parents: 1680
diff changeset
214 if feature.Properties == nil || feature.Geometry.Coordinates == nil {
1680
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parents: 1679
diff changeset
215 missingProperties++
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
216 continue
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
217 }
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parents: 1679
diff changeset
218
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
219 var props waterwayAxisProperties
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parents: 1679
diff changeset
220
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
221 if err := json.Unmarshal(*feature.Properties, &props); err != nil {
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
222 badProperties++
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
223 continue
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
224 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
225
1681
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parents: 1680
diff changeset
226 var nobjnam sql.NullString
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parents: 1680
diff changeset
227 if props.NObjNnm != nil {
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parents: 1680
diff changeset
228 nobjnam = sql.NullString{String: *props.NObjNnm, Valid: true}
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parents: 1680
diff changeset
229 }
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
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diff changeset
230
1679
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diff changeset
231 switch feature.Geometry.Type {
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diff changeset
232 case "LineString":
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233 var l line
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234 if err := json.Unmarshal(*feature.Geometry.Coordinates, &l); err != nil {
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235 return err
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236 }
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diff changeset
237 if _, err := insertStmt.ExecContext(
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diff changeset
238 ctx,
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239 l.asWKB(),
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240 epsg,
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diff changeset
241 props.ObjNam,
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242 nobjnam,
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parents: 1680
diff changeset
243 ); err != nil {
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244 return err
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245 }
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diff changeset
246 features++
1679
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247 case "MultiLineString":
1681
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248 var ls []line
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249 if err := json.Unmarshal(*feature.Geometry.Coordinates, &ls); err != nil {
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parents: 1680
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250 return err
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parents: 1680
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251 }
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252 for _, l := range ls {
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diff changeset
253 if _, err := insertStmt.ExecContext(
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parents: 1680
diff changeset
254 ctx,
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parents: 1680
diff changeset
255 l.asWKB(),
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parents: 1680
diff changeset
256 epsg,
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parents: 1680
diff changeset
257 props.ObjNam,
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parents: 1680
diff changeset
258 nobjnam,
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parents: 1680
diff changeset
259 ); err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
260 return err
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parents: 1680
diff changeset
261 }
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parents: 1680
diff changeset
262 features++
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parents: 1680
diff changeset
263 }
1679
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parents: 1677
diff changeset
264 default:
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
265 unsupportedTypes[feature.Geometry.Type]++
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parents: 1677
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266 }
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parents: 1677
diff changeset
267 }
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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diff changeset
268 return nil
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parents: 1677
diff changeset
269 }); 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
270 feedback.Error("Downloading features failed: %v", err)
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
271 return nil, err
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
272 }
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
273
1681
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parents: 1680
diff changeset
274 if features == 0 {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
275 err := errors.New("No features found")
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parents: 1680
diff changeset
276 feedback.Error("%v", err)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
277 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
278 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
279
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
280 if badProperties > 0 {
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
281 feedback.Warn("Bad properties: %d", badProperties)
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
282 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
283
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
284 if missingProperties > 0 {
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
285 feedback.Warn("Missing properties: %d", missingProperties)
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
286 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
287
1679
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parents: 1677
diff changeset
288 if len(unsupportedTypes) != 0 {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
289 var b strings.Builder
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
290 for t, c := range unsupportedTypes {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
291 if b.Len() > 0 {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
292 b.WriteString(", ")
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
293 }
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
294 b.WriteString(fmt.Sprintf("%s: %d", t, c))
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
295 }
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
296 feedback.Warn("Unsupported types found: %s", b.String())
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
297 }
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
298
1681
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
299 if err = tx.Commit(); 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
300 feedback.Info("Storing %d features took %s",
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
301 features, time.Since(start))
1679
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
302 }
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
303
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
304 return nil, err
1675
8fec3887c7e5 Waterway axis import: Added stub.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
305 }