Mercurial > gemma
annotate pkg/controllers/printtemplates.go @ 2887:83acca8937de
client: importoverview: improved log style
author | Markus Kottlaender <markus@intevation.de> |
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date | Mon, 01 Apr 2019 18:53:53 +0200 |
parents | 1c8b8a4476af |
children | 813309225e35 |
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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 "bytes" |
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18 "database/sql" |
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19 "encoding/json" |
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20 "net/http" |
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21 "time" |
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22 |
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23 "github.com/gorilla/mux" |
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24 "github.com/jackc/pgx/pgtype" |
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25 |
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26 "gemma.intevation.de/gemma/pkg/models" |
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27 ) |
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28 |
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29 const maxPrintTemplateSize = 5 * 1024 * 1024 |
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30 |
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31 const ( |
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32 listPrintTemplatesSQL = ` |
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33 SELECT |
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34 template_name, |
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35 date_info, |
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36 country |
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37 FROM |
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38 users.templates |
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39 ORDER BY date_info DESC` |
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40 |
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41 hasPrintTemplateSQL = ` |
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42 SELECT true FROM users.templates WHERE template_name = $1` |
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43 |
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44 deletePrintTemplateSQL = ` |
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45 DELETE FROM users.templates WHERE template_name = $1` |
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46 |
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47 selectPrintTemplateSQL = ` |
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48 SELECT template_data FROM users.templates WHERE template_name = $1` |
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49 |
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50 insertPrintTemplateSQL = ` |
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51 INSERT INTO users.templates (template_name, template_data, country) |
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52 SELECT |
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53 $1, |
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54 $2, |
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55 CASE WHEN pg_has_role('sys_admin', 'MEMBER') THEN NULL |
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56 ELSE users.current_user_country() |
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57 END` |
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58 |
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59 updatePrintTemplateSQL = ` |
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60 UPDATE user.templates template_data = $2 WHERE template_name = $1` |
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61 ) |
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62 |
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63 func listPrintTemplates( |
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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 |
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69 type template struct { |
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70 Name string `json:"name"` |
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71 Time models.Time `json:"time"` |
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72 Country *string `json:"country,omitempty"` |
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73 } |
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74 |
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75 var rows *sql.Rows |
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76 if rows, err = conn.QueryContext(req.Context(), listPrintTemplatesSQL); err != nil { |
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77 return |
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78 } |
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79 defer rows.Close() |
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80 |
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81 templates := []*template{} |
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82 |
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83 for rows.Next() { |
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84 var tmpl template |
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85 var w time.Time |
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86 var country sql.NullString |
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87 if err = rows.Scan(&tmpl.Name, &w, &country); err != nil { |
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88 return |
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89 } |
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90 tmpl.Time = models.Time{w} |
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91 if country.Valid { |
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92 tmpl.Country = &country.String |
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93 } |
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94 templates = append(templates, &tmpl) |
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95 } |
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96 |
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97 jr = JSONResult{Result: templates} |
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98 return |
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99 } |
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100 |
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101 func fetchPrintTemplate( |
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102 _ interface{}, |
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103 req *http.Request, |
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104 conn *sql.Conn, |
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105 ) (jr JSONResult, err error) { |
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106 |
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107 ctx := req.Context() |
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108 name := mux.Vars(req)["name"] |
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109 |
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110 var data pgtype.Bytea |
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111 err = conn.QueryRowContext(ctx, selectPrintTemplateSQL, name).Scan(&data) |
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112 |
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113 switch { |
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114 case err == sql.ErrNoRows: |
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115 err = JSONError{ |
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116 Code: http.StatusNotFound, |
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117 Message: "No such template found", |
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118 } |
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119 return |
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120 case err != nil: |
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121 return |
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122 case data.Status != pgtype.Present: |
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123 err = JSONError{ |
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124 Code: http.StatusInternalServerError, |
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125 Message: "Unexpected return value from database query", |
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126 } |
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127 return |
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128 } |
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129 jr = JSONResult{Result: bytes.NewReader(data.Bytes)} |
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130 return |
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131 } |
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132 |
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133 func createPrintTemplate( |
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134 input interface{}, |
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135 req *http.Request, |
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136 conn *sql.Conn, |
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137 ) (jr JSONResult, err error) { |
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138 |
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139 ctx := req.Context() |
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140 name := mux.Vars(req)["name"] |
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141 in := input.(*json.RawMessage) |
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142 |
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143 if name == "" { |
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144 err = JSONError{ |
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145 Code: http.StatusBadRequest, |
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146 Message: "Template must have a none empty name", |
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147 } |
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148 return |
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149 } |
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150 if len(*in) == 0 { |
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151 err = JSONError{ |
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152 Code: http.StatusBadRequest, |
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153 Message: "Template must have a none empty template", |
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154 } |
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155 return |
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156 } |
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157 var tx *sql.Tx |
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158 if tx, err = conn.BeginTx(ctx, nil); err != nil { |
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159 return |
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160 } |
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161 defer tx.Rollback() |
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162 |
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163 var dummy bool |
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164 err = tx.QueryRowContext(ctx, hasPrintTemplateSQL, name).Scan(&dummy) |
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165 |
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166 switch { |
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167 case err == sql.ErrNoRows: |
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168 // This is fine. |
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169 case err != nil: |
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170 return |
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171 default: |
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172 err = JSONError{ |
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173 Code: http.StatusBadRequest, |
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174 Message: "A template with this name already exists", |
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175 } |
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176 return |
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177 } |
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178 data := pgtype.Bytea{Bytes: *in, Status: pgtype.Present} |
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179 |
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180 if _, err = tx.ExecContext(ctx, insertPrintTemplateSQL, name, &data); err != nil { |
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181 return |
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182 } |
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183 |
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184 if err = tx.Commit(); err != nil { |
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185 return |
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186 } |
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187 jr = JSONResult{ |
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188 Code: http.StatusCreated, |
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189 Result: map[string]string{ |
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190 "created": name, |
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191 }, |
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192 } |
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193 return |
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194 } |
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195 |
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196 func deletePrintTemplate( |
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197 _ interface{}, |
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198 req *http.Request, |
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199 conn *sql.Conn, |
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200 ) (jr JSONResult, err error) { |
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201 |
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202 ctx := req.Context() |
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203 name := mux.Vars(req)["name"] |
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204 |
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205 var tx *sql.Tx |
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206 if tx, err = conn.BeginTx(ctx, nil); err != nil { |
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207 return |
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208 } |
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209 defer tx.Rollback() |
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210 |
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211 var dummy bool |
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212 err = tx.QueryRowContext(ctx, hasPrintTemplateSQL, name).Scan(&dummy) |
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213 |
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214 switch { |
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215 case err == sql.ErrNoRows: |
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216 err = JSONError{ |
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217 Code: http.StatusNotFound, |
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218 Message: "No such template found", |
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219 } |
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220 return |
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221 case err != nil: |
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222 return |
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223 case !dummy: |
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224 err = JSONError{ |
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225 Code: http.StatusInternalServerError, |
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226 Message: "Unexpected return value from database query", |
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227 } |
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228 return |
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229 } |
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230 |
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231 if _, err = tx.ExecContext(ctx, deletePrintTemplateSQL, name); err != nil { |
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232 return |
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233 } |
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234 |
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235 if err = tx.Commit(); err != nil { |
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236 return |
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237 } |
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238 |
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239 jr = JSONResult{ |
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240 Result: map[string]string{ |
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241 "deleted": name, |
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242 }, |
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243 } |
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244 |
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245 return |
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246 } |
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247 |
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248 func updatePrintTemplate( |
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249 input interface{}, |
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250 req *http.Request, |
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251 conn *sql.Conn, |
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252 ) (jr JSONResult, err error) { |
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253 |
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254 ctx := req.Context() |
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255 name := mux.Vars(req)["name"] |
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256 in := input.(*json.RawMessage) |
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257 |
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258 if name == "" { |
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259 err = JSONError{ |
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260 Code: http.StatusBadRequest, |
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261 Message: "Template must have a none empty name", |
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262 } |
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263 return |
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264 } |
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265 if len(*in) == 0 { |
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266 err = JSONError{ |
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267 Code: http.StatusBadRequest, |
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268 Message: "Template must have a none empty template", |
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269 } |
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270 return |
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271 } |
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272 var tx *sql.Tx |
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273 if tx, err = conn.BeginTx(ctx, nil); err != nil { |
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274 return |
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275 } |
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276 defer tx.Rollback() |
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277 |
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278 var dummy bool |
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279 err = tx.QueryRowContext(ctx, hasPrintTemplateSQL, name).Scan(&dummy) |
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280 |
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281 switch { |
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282 case err == sql.ErrNoRows: |
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283 err = JSONError{ |
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284 Code: http.StatusNotFound, |
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285 Message: "No such template found", |
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286 } |
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287 return |
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288 case err != nil: |
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289 return |
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290 case !dummy: |
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291 err = JSONError{ |
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292 Code: http.StatusInternalServerError, |
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293 Message: "Unexpected return value from database query", |
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294 } |
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295 return |
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296 } |
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297 data := pgtype.Bytea{Bytes: *in, Status: pgtype.Present} |
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298 |
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299 if _, err = tx.ExecContext(ctx, updatePrintTemplateSQL, name, &data); err != nil { |
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300 return |
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301 } |
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302 |
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303 if err = tx.Commit(); err != nil { |
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304 return |
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305 } |
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306 |
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307 jr = JSONResult{ |
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308 Code: http.StatusOK, |
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309 Result: map[string]string{ |
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310 "updated": name, |
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311 }, |
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312 } |
2148
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313 return |
4057a1f15174
Print templates: Forget to add controller file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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