Mercurial > gemma
annotate pkg/imports/bn.go @ 2248:cce158db02b0
Input area as multipolygons to generate area from stretch
Doing so is more resilient against invalid geometries and gives
more plausible results if tributaries are involved (i.e. does not
include the adjacent area of the tributary in the result).
author | Tom Gottfried <tom@intevation.de> |
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date | Wed, 13 Feb 2019 16:48:52 +0100 |
parents | 3437ceee1529 |
children | cfc523c70e90 |
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 "context" |
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18 "database/sql" |
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19 "errors" |
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20 "regexp" |
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21 "strconv" |
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22 "time" |
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23 |
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24 "gemma.intevation.de/gemma/pkg/soap/ifbn" |
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25 ) |
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26 |
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27 // Bottleneck is an import job to import |
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28 // bottlenecks from an IFBN SOAP service. |
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29 type Bottleneck struct { |
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30 // URL is the URL of the SOAP service. |
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31 URL string `json:"url"` |
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32 // Insecure indicates if HTTPS traffic |
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33 // should validate certificates or not. |
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34 Insecure bool `json:"insecure"` |
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35 } |
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36 |
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37 // BNJobKind is the import queue type identifier. |
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38 const BNJobKind JobKind = "bn" |
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39 |
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40 const ( |
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41 hasBottleneckSQL = ` |
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42 SELECT true FROM waterway.bottlenecks WHERE bottleneck_id = $1` |
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43 |
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44 insertBottleneckSQL = ` |
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45 INSERT INTO waterway.bottlenecks ( |
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46 bottleneck_id, |
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47 fk_g_fid, |
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48 objnam, |
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49 nobjnm, |
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50 stretch, |
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51 area, |
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52 rb, |
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53 lb, |
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54 responsible_country, |
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55 revisiting_time, |
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56 limiting, |
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57 date_info, |
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58 source_organization |
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59 ) VALUES( |
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60 $1, |
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61 isrs_fromText($2), |
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62 $3, |
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63 $4, |
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64 isrsrange(isrs_fromText($5), isrs_fromText($6)), |
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65 ISRSrange_area( |
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66 isrsrange(isrs_fromText($5), isrs_fromText($6)), |
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67 (SELECT ST_Collect(CAST(area AS geometry)) |
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68 FROM waterway.waterway_area)), |
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69 $7, |
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70 $8, |
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71 $9, |
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72 $10, |
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73 $11, |
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74 $12, |
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75 $13 |
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76 ) |
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77 RETURNING id` |
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78 ) |
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79 |
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80 type bnJobCreator struct{} |
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81 |
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82 func init() { |
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83 RegisterJobCreator(BNJobKind, bnJobCreator{}) |
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84 } |
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85 |
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86 func (bnJobCreator) Description() string { return "bottlenecks" } |
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87 |
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88 func (bnJobCreator) AutoAccept() bool { return false } |
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89 |
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90 func (bnJobCreator) Create() Job { return new(Bottleneck) } |
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91 |
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92 func (bnJobCreator) Depends() []string { |
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93 return []string{ |
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94 "gauges", |
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95 "bottlenecks", |
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96 } |
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97 } |
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98 |
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99 const ( |
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100 bnStageDoneSQL = ` |
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101 UPDATE waterway.bottlenecks SET staging_done = true |
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102 WHERE id IN ( |
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103 SELECT key from import.track_imports |
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104 WHERE import_id = $1 AND |
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105 relation = 'waterway.bottlenecks'::regclass)` |
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106 ) |
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107 |
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108 // StageDone moves the imported bottleneck out of the staging area. |
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109 func (bnJobCreator) StageDone( |
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110 ctx context.Context, |
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111 tx *sql.Tx, |
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112 id int64, |
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113 ) error { |
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114 _, err := tx.ExecContext(ctx, bnStageDoneSQL, id) |
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115 return err |
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116 } |
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117 |
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118 // CleanUp of a bottleneck import is a NOP. |
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119 func (*Bottleneck) CleanUp() error { return nil } |
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120 |
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121 var rblbRe = regexp.MustCompile(`(..)_(..)`) |
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122 |
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123 func splitRBLB(s string) (string, string) { |
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124 m := rblbRe.FindStringSubmatch(s) |
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125 if len(m) == 0 { |
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126 return "", "" |
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127 } |
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128 return m[1], m[2] |
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129 } |
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130 |
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131 func revisitingTime(s string) int { |
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132 v, err := strconv.Atoi(s) |
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133 if err != nil { |
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134 v = 0 |
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135 } |
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136 return v |
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137 } |
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138 |
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139 // Do executes the actual bottleneck import. |
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140 func (bn *Bottleneck) Do( |
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141 ctx context.Context, |
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142 importID int64, |
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143 conn *sql.Conn, |
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144 feedback Feedback, |
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145 ) (interface{}, error) { |
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146 |
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147 fetch := func(feedback Feedback) ([]*ifbn.BottleNeckType, error) { |
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148 client := ifbn.NewIBottleneckService(bn.URL, bn.Insecure, nil) |
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149 |
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150 req := &ifbn.Export_bn_by_isrs{} |
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151 |
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152 resp, err := client.Export_bn_by_isrs(req) |
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153 if err != nil { |
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154 return nil, err |
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155 } |
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156 |
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157 if resp.Export_bn_by_isrsResult == nil { |
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158 return nil, errors.New("no Bottlenecks found") |
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159 } |
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160 |
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161 return resp.Export_bn_by_isrsResult.BottleNeckType, nil |
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162 } |
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163 |
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164 return storeBottlenecks(ctx, fetch, importID, conn, feedback) |
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165 } |
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166 |
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167 func storeBottlenecks( |
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168 ctx context.Context, |
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169 fetch func(Feedback) ([]*ifbn.BottleNeckType, error), |
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170 importID int64, |
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171 conn *sql.Conn, |
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172 feedback Feedback, |
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173 ) (interface{}, error) { |
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174 start := time.Now() |
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175 |
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176 bns, err := fetch(feedback) |
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177 if err != nil { |
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178 return nil, err |
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179 } |
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180 |
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181 feedback.Info("Found %d bottlenecks for import", len(bns)) |
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182 |
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183 tx, err := conn.BeginTx(ctx, nil) |
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184 if err != nil { |
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185 return nil, err |
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186 } |
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187 defer tx.Rollback() |
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188 |
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189 var hasStmt, insertStmt, trackStmt *sql.Stmt |
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190 |
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191 for _, x := range []struct { |
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192 sql string |
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193 stmt **sql.Stmt |
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194 }{ |
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195 {hasBottleneckSQL, &hasStmt}, |
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196 {insertBottleneckSQL, &insertStmt}, |
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197 {trackImportSQL, &trackStmt}, |
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198 } { |
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199 var err error |
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200 if *x.stmt, err = tx.PrepareContext(ctx, x.sql); err != nil { |
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201 return nil, err |
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202 } |
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203 defer (*x.stmt).Close() |
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204 } |
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205 |
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206 var nids []string |
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207 |
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208 nextBN: |
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209 for _, bn := range bns { |
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210 |
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211 var found bool |
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212 err := hasStmt.QueryRowContext(ctx, bn.Bottleneck_id).Scan(&found) |
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213 switch { |
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214 case err == sql.ErrNoRows: |
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215 // This is good. |
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216 case err != nil: |
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217 return nil, err |
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218 case found: |
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219 // TODO: Deep comparison database vs. SOAP. |
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220 continue nextBN |
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221 } |
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222 |
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223 rb, lb := splitRBLB(bn.Rb_lb) |
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224 |
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225 var limiting, country string |
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226 |
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227 if bn.Limiting_factor != nil { |
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228 limiting = string(*bn.Limiting_factor) |
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229 } |
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230 |
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231 if bn.Responsible_country != nil { |
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232 country = string(*bn.Responsible_country) |
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233 } |
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234 |
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235 var nid int64 |
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236 |
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237 err = insertStmt.QueryRowContext( |
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238 ctx, |
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239 bn.Bottleneck_id, |
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240 bn.Fk_g_fid, |
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241 bn.OBJNAM, |
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242 bn.NOBJNM, |
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243 bn.From_ISRS, bn.To_ISRS, |
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244 rb, |
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245 lb, |
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246 country, |
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247 revisitingTime(bn.Revisiting_time), |
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248 limiting, |
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249 bn.Date_Info, |
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250 bn.Source, |
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251 ).Scan(&nid) |
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252 if err != nil { |
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253 return nil, err |
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254 } |
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255 nids = append(nids, bn.Bottleneck_id) |
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256 if _, err := trackStmt.ExecContext( |
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257 ctx, importID, "waterway.bottlenecks", nid, |
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258 ); err != nil { |
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259 return nil, err |
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260 } |
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261 feedback.Info("Inserted '%s' into database", bn.OBJNAM) |
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262 } |
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263 if len(nids) == 0 { |
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264 return nil, UnchangedError("No new bottlenecks found") |
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265 } |
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266 |
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267 feedback.Info("Storing %d bottlenecks took %s", len(nids), time.Since(start)) |
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268 if err := tx.Commit(); err != nil { |
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269 return nil, err |
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270 } |
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271 feedback.Info("Import of bottlenecks was successful") |
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272 summary := struct { |
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273 Bottlenecks []string `json:"bottlenecks"` |
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274 }{ |
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275 Bottlenecks: nids, |
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276 } |
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277 return &summary, nil |
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278 } |