Mercurial > gemma

annotate pkg/imports/dsr.go @ 4799:f32d086b5dbf

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Removed the mechanical touch of the last commit.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 25 Oct 2019 18:40:37 +0200
parents ca6a5f722471
children 4847ac70103a
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1 // without warranty, see README.md and license for details.
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2 //
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3 // SPDX-License-Identifier: AGPL-3.0-or-later
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4 // License-Filename: LICENSES/AGPL-3.0.txt
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5 //
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6 // Copyright (C) 2019 by via donau
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7 // – Österreichische Wasserstraßen-Gesellschaft mbH
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8 // Software engineering by Intevation GmbH
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9 //
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10 // Author(s):
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11 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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12 // * Sascha Wilde <wilde@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
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21 "gemma.intevation.de/gemma/pkg/common"
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22 "gemma.intevation.de/gemma/pkg/models"
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23 )
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24
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25 // DeleteSoundingResult is a Job to delete a sounding result from the database.
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26 type DeleteSoundingResult struct {
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27 BottleneckId string `json:"bottleneck-id"`
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28 Date models.Date `json:"date-info"`
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29 }
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30
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31 func (dsr *DeleteSoundingResult) Description() (string, error) {
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32 return dsr.BottleneckId + "|" + dsr.Date.Format(common.DateFormat), nil
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33 }
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34
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35 // DSRJobKind is the import queue type identifier.
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36 const DSRJobKind JobKind = "dsr"
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37
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38 type dsrJobCreator struct{}
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39
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40 func init() { RegisterJobCreator(DSRJobKind, dsrJobCreator{}) }
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41
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42 func (dsrJobCreator) Description() string { return "delete sounding result" }
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43
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44 func (dsrJobCreator) AutoAccept() bool { return false }
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45
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46 func (dsrJobCreator) Create() Job { return new(DeleteSoundingResult) }
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47
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48 func (dsrJobCreator) Depends() [2][]string {
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49 // Same as import.
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50 return srJobCreator{}.Depends()
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51 }
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52
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53 const (
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54 dsrFindSQL = `
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55 SELECT id FROM waterway.sounding_results
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56 WHERE bottleneck_id = $1
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57 AND date_info = $2
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58 AND staging_done
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59 `
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60 dsrStageDoneSQL = `
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61 DELETE FROM waterway.sounding_results
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62 WHERE id IN (
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63 SELECT key from import.track_imports
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64 WHERE import_id = $1 AND
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65 deletion AND
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66 relation = 'waterway.sounding_results'::regclass)`
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67 )
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68
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69 // StageDone finally removes the sounding result from the database.
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70 func (dsrJobCreator) StageDone(
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71 ctx context.Context,
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72 tx *sql.Tx,
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73 id int64,
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74 ) error {
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75 result, err := tx.ExecContext(ctx, dsrStageDoneSQL, id)
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76 if err != nil {
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77 return err
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78 }
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79 rows, err := result.RowsAffected()
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80 if err != nil {
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81 return err
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82 }
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83 if rows == 0 {
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84 return errors.New("Deletion failed. " +
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85 "Propably Data outside the area of responsibility." +
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86 "Or the data was already deleted by another user.")
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87 }
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88 return err
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89 }
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90
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91 // CleanUp of a sounding result delete import is a NOP.
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92 func (*DeleteSoundingResult) CleanUp() error { return nil }
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93
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94 // Do prepares the deletion of the sounding result.
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95 func (dsr *DeleteSoundingResult) Do(
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96 ctx context.Context,
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97 importID int64,
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98 conn *sql.Conn,
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99 feedback Feedback,
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100 ) (interface{}, error) {
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101
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102 tx, err := conn.BeginTx(ctx, nil)
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103 if err != nil {
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104 return nil, err
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105 }
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106 defer tx.Rollback()
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107
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108 feedback.Info("SR: bottleneck-id: %v, date-info: %v",
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109 dsr.BottleneckId, dsr.Date.Time)
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110
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111 var id int64
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112 if err := tx.QueryRowContext(ctx, dsrFindSQL,
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113 dsr.BottleneckId, dsr.Date.Time).Scan(&id); err != nil {
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114 return nil, err
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115 }
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116
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117 feedback.Info("Prepare deletion of sounding result with id %d", id)
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118
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119 if _, err := tx.ExecContext(
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120 ctx,
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121 trackImportDeletionSQL,
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122 importID,
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123 "waterway.sounding_results",
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124 id,
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125 true,
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126 ); err != nil {
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127 return nil, err
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128 }
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129
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130 if err := tx.Commit(); err != nil {
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131 return nil, err
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132 }
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133
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134 return dsr, nil
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135 }