Mercurial > gemma

annotate pkg/controllers/importqueue.go @ 1037:a04126989d91

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Added endpoint to delete job from import queue. This has no effect on running jobs. DELETE path: /api/imports/[0-9]+
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 24 Oct 2018 16:21:44 +0200
parents c0f5dedf5753
children 3d50f558870c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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 controllers
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15
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16 import (
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17 "database/sql"
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18 "fmt"
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19 "net/http"
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20 "strconv"
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21
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22 "gemma.intevation.de/gemma/pkg/models"
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23 "github.com/gorilla/mux"
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24 )
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25
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26 const (
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27 selectImportsUnpagedSQL = `
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28 SELECT
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29 id,
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30 state::varchar,
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31 enqueued,
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32 kind,
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33 username
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34 FROM waterway.imports
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35 ORDER BY id`
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36
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37 selectImportPagedSQL = selectImportsUnpagedSQL + `
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38 LIMIT $1 OFFSET $2`
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39
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40 selectHasImportSQL = `
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41 SELECT true FROM Waterway.imports WHERE id = $1`
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42
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43 selectHasNoRunningImportSQL = `
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44 SELECT true FROM Waterway.imports
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45 WHERE id = $1 AND state <> 'running'::waterway.import_state`
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46
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47 selectImportLogsSQL = `
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48 SELECT
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49 time,
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50 kind::varchar,
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51 msg
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52 FROM waterway.import_logs
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53 WHERE import_id = $1
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54 ORDER BY time`
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55
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56 deleteLogsSQL = `
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57 DELETE FROM waterway.import_logs WHERE import_id = $1`
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58
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59 deleteImportSQL = `
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60 DELETE FROM waterway.imports WHERE id = $1`
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61 )
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62
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63 func listImports(
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64 _ interface{},
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65 req *http.Request,
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66 conn *sql.Conn,
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67 ) (jr JSONResult, err error) {
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68 vars := mux.Vars(req)
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69
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70 off, of := vars["offset"]
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71 lim, lf := vars["limit"]
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72
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73 var rows *sql.Rows
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74
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75 if of && lf {
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76 offset, _ := strconv.ParseInt(off, 10, 64)
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77 limit, _ := strconv.ParseInt(lim, 10, 64)
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78 rows, err = conn.QueryContext(
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79 req.Context(), selectImportPagedSQL, limit, offset)
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80 } else {
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81 rows, err = conn.QueryContext(
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82 req.Context(), selectImportsUnpagedSQL)
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83 }
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84 if err != nil {
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85 return
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86 }
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87 defer rows.Close()
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88
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89 imports := make([]*models.Import, 0, 20)
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90
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91 for rows.Next() {
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92 var it models.Import
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93 if err = rows.Scan(
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94 &it.ID,
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95 &it.State,
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96 &it.Enqueued,
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97 &it.Kind,
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98 &it.User,
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99 ); err != nil {
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100 return
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101 }
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102 imports = append(imports, &it)
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103 }
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104
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105 if err = rows.Err(); err != nil {
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106 return
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107 }
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108
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109 jr = JSONResult{
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110 Result: struct {
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111 Imports []*models.Import `json:"imports"`
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112 }{
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113 Imports: imports,
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114 },
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115 }
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116 return
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117 }
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118
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119 func importLogs(
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120 _ interface{},
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121 req *http.Request,
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122 conn *sql.Conn,
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123 ) (jr JSONResult, err error) {
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124
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125 ctx := req.Context()
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126
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127 id, _ := strconv.ParseInt(mux.Vars(req)["id"], 10, 64)
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128
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129 // Check if he have such a import job first.
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130 var dummy bool
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131 err = conn.QueryRowContext(ctx, selectHasImportSQL, id).Scan(&dummy)
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132 switch {
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133 case err == sql.ErrNoRows:
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134 err = JSONError{
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135 Code: http.StatusNotFound,
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136 Message: fmt.Sprintf("Cannot find import #%d.", id),
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137 }
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138 return
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139 case err != nil:
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140 return
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141 }
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142
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143 // We have it -> generate log entries.
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144 var rows *sql.Rows
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145 rows, err = conn.QueryContext(ctx, selectImportLogsSQL, id)
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146 if err != nil {
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147 return
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148 }
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149 defer rows.Close()
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150
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151 entries := make([]*models.ImportLogEntry, 0, 10)
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152
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153 for rows.Next() {
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154 var entry models.ImportLogEntry
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155 if err = rows.Scan(&entry.Time, &entry.Kind, &entry.Message); err != nil {
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156 return
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157 }
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158 entries = append(entries, &entry)
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159 }
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160
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161 if err = rows.Err(); err != nil {
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162 return
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163 }
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164
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165 jr = JSONResult{
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166 Result: struct {
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167 Entries []*models.ImportLogEntry `json:"entries"`
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168 }{
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169 Entries: entries,
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170 },
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171 }
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172 return
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173 }
1037
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174
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175 func deleteImport(
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176 _ interface{},
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177 req *http.Request,
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178 conn *sql.Conn,
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179 ) (jr JSONResult, err error) {
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180
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181 ctx := req.Context()
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182 id, _ := strconv.ParseInt(mux.Vars(req)["id"], 10, 64)
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183
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184 var tx *sql.Tx
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185 tx, err = conn.BeginTx(ctx, nil)
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186 if err != nil {
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187 return
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188 }
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189 defer tx.Rollback()
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190
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191 // Check if he have such a import job first.
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192 var dummy bool
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193 err = tx.QueryRowContext(ctx, selectHasNoRunningImportSQL, id).Scan(&dummy)
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194 switch {
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195 case err == sql.ErrNoRows:
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196 err = JSONError{
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197 Code: http.StatusNotFound,
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198 Message: fmt.Sprintf("Cannot find import #%d.", id),
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199 }
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200 return
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201 case err != nil:
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202 return
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203 }
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204
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205 if _, err = tx.ExecContext(ctx, deleteLogsSQL, id); err != nil {
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206 return
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207 }
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208
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209 if _, err = tx.ExecContext(ctx, deleteImportSQL, id); err != nil {
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210 return
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211 }
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212
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213 if err = tx.Commit(); err != nil {
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214 return
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215 }
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216
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217 jr = JSONResult{Code: http.StatusNoContent}
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218
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219 return
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220 }