Mercurial > gemma

annotate pkg/imports/dsr.go @ 4852:046a07a33b19

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Fixed the golint issues of the imports package.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 19 Nov 2019 16:08:55 +0100
parents 4847ac70103a
children 427f87ac96d6
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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 // Description gives a short info about relevant facts of this import.
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32 func (dsr *DeleteSoundingResult) Description() (string, error) {
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33 return dsr.BottleneckID + "|" + dsr.Date.Format(common.DateFormat), nil
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34 }
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35
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36 // DSRJobKind is the import queue type identifier.
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37 const DSRJobKind JobKind = "dsr"
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38
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39 type dsrJobCreator struct{}
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40
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41 func init() { RegisterJobCreator(DSRJobKind, dsrJobCreator{}) }
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42
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43 func (dsrJobCreator) Description() string { return "delete sounding result" }
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44
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45 func (dsrJobCreator) AutoAccept() bool { return false }
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46
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47 func (dsrJobCreator) Create() Job { return new(DeleteSoundingResult) }
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48
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49 func (dsrJobCreator) Depends() [2][]string {
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50 // Same as import.
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51 return srJobCreator{}.Depends()
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52 }
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53
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54 const (
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55 dsrFindSQL = `
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56 SELECT id FROM waterway.sounding_results
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57 WHERE bottleneck_id = $1
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58 AND date_info = $2
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59 AND staging_done
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60 `
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61 dsrStageDoneSQL = `
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62 DELETE FROM waterway.sounding_results
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63 WHERE id IN (
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64 SELECT key from import.track_imports
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65 WHERE import_id = $1 AND
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66 deletion AND
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67 relation = 'waterway.sounding_results'::regclass)`
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68 )
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69
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70 // StageDone finally removes the sounding result from the database.
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71 func (dsrJobCreator) StageDone(
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72 ctx context.Context,
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73 tx *sql.Tx,
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74 id int64,
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75 ) error {
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76 result, err := tx.ExecContext(ctx, dsrStageDoneSQL, id)
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77 if err != nil {
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78 return err
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79 }
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80 rows, err := result.RowsAffected()
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81 if err != nil {
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82 return err
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83 }
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84 if rows == 0 {
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85 return errors.New("deletion failed. " +
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86 "Propably Data outside the area of responsibility." +
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87 "Or the data was already deleted by another user")
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88 }
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89 return err
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90 }
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91
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92 // CleanUp of a sounding result delete import is a NOP.
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93 func (*DeleteSoundingResult) CleanUp() error { return nil }
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94
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95 // Do prepares the deletion of the sounding result.
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96 func (dsr *DeleteSoundingResult) Do(
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97 ctx context.Context,
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98 importID int64,
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99 conn *sql.Conn,
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100 feedback Feedback,
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101 ) (interface{}, error) {
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102
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103 tx, err := conn.BeginTx(ctx, nil)
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104 if err != nil {
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105 return nil, err
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106 }
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107 defer tx.Rollback()
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108
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109 feedback.Info("SR: bottleneck-id: %v, date-info: %v",
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110 dsr.BottleneckID, dsr.Date.Time)
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111
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112 var id int64
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113 if err := tx.QueryRowContext(ctx, dsrFindSQL,
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114 dsr.BottleneckID, dsr.Date.Time).Scan(&id); err != nil {
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115 return nil, err
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116 }
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117
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118 feedback.Info("Prepare deletion of sounding result with id %d", id)
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119
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120 if _, err := tx.ExecContext(
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121 ctx,
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122 trackImportDeletionSQL,
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123 importID,
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124 "waterway.sounding_results",
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125 id,
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126 true,
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127 ); err != nil {
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128 return nil, err
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129 }
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130
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131 if err := tx.Commit(); err != nil {
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132 return nil, err
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133 }
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134
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135 return dsr, nil
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136 }