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annotate pkg/models/intservices.go @ 1327:cabf4789e02b

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To make golint happier made context.Context to be the first argument of auth.RunAs.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 25 Nov 2018 15:56:07 +0100
parents 9f7dc950ffd2
children dfe9cde6a20c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1017
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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 // * Tom Gottfried <tom.gottfried@intevation.de>
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14
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15 package models
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16
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17 import (
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18 "context"
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19 "database/sql"
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20 "log"
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21 "net/http"
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22 "sync"
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23
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24 "gemma.intevation.de/gemma/pkg/auth"
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25 "gemma.intevation.de/gemma/pkg/config"
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26 )
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27
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28 type IntEntry struct {
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29 Name string `json:"name"`
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30 Style bool `json:"style"`
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31 WMS bool `json:"wms"`
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32 WFS bool `json:"wfs"`
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33 }
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34
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35 type IntServices struct {
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36 entries []IntEntry
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37 mu sync.Mutex
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38 }
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39
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40 const (
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41 selectServicesSQL = `
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42 SELECT relname, style IS NOT NULL, as_wms, as_wfs
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43 FROM sys_admin.published_services
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44 JOIN pg_class ON name = oid ORDER by relname`
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45
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46 selectStyleSQL = `
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47 SELECT XMLSERIALIZE(DOCUMENT style AS text)
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48 FROM sys_admin.published_services
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49 JOIN pg_class ON name = oid
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50 WHERE relname = $1`
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51
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52 updateStyleSQL = `
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53 UPDATE sys_admin.published_services
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54 SET style = XMLPARSE(DOCUMENT $1)
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55 WHERE name IN (SELECT oid FROM pg_class WHERE relname = $2)`
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56 )
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57
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58 var InternalServices = &IntServices{}
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59
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60 func (e *IntEntry) LoadStyle() (string, error) {
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61 var style string
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62 ctx := context.Background()
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63 err := auth.RunAs(ctx, "sys_admin",
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64 func(conn *sql.Conn) error {
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65 return conn.QueryRowContext(
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66 ctx,
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67 selectStyleSQL,
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68 e.Name).Scan(&style)
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69 })
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70 return style, err
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71 }
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72
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73 func UpdateInternalStyle(req *http.Request, name, style string) error {
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74 return auth.RunAsSessionUser(req, func(conn *sql.Conn) error {
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75 _, err := conn.ExecContext(
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76 req.Context(), updateStyleSQL,
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77 style, name)
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78 if err == nil {
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79 InternalServices.Invalidate()
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80 }
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81 return err
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82 })
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83 }
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84
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85 func (ps *IntServices) Find(name string) (string, bool) {
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86 ps.mu.Lock()
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87 defer ps.mu.Unlock()
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88
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89 if ps.entries == nil {
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90 if err := ps.load(); err != nil {
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91 log.Printf("error: %v\n", err)
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92 return "", false
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93 }
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94 }
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95
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96 if ps.has(name) {
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97 return config.GeoServerURL() + "/" + name, true
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98 }
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99 return "", false
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100 }
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101
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102 func (ps *IntServices) has(service string) bool {
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103 var check func(*IntEntry) bool
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104 switch service {
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105 case "wms":
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106 check = func(e *IntEntry) bool { return e.WMS }
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107 case "wfs":
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108 check = func(e *IntEntry) bool { return e.WFS }
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109 default:
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110 return false
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111 }
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112 for i := range ps.entries {
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113 if check(&ps.entries[i]) {
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114 return true
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115 }
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116 }
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117 return false
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118 }
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119
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120 func (ps *IntServices) load() error {
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121 // make empty slice to prevent retry if slice is empty.
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122 ps.entries = []IntEntry{}
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123 ctx := context.Background()
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124 return auth.RunAs(ctx, "sys_admin",
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125 func(conn *sql.Conn) error {
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126 rows, err := conn.QueryContext(
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127 ctx, selectServicesSQL)
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128 if err != nil {
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129 return err
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130 }
501
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131 defer rows.Close()
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132 for rows.Next() {
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133 var entry IntEntry
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134 if err := rows.Scan(
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135 &entry.Name, &entry.Style,
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ac325d191009 Ficxed typo when scanning WMS.
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136 &entry.WMS, &entry.WFS,
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137 ); err != nil {
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138 return err
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139 }
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140 ps.entries = append(ps.entries, entry)
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141 }
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142 return rows.Err()
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143 })
441
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144 }
442
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145
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146 func (ps *IntServices) Invalidate() {
442
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147 ps.mu.Lock()
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148 ps.entries = nil
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149 ps.mu.Unlock()
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150 }
444
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151
915
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152 func InternalAll(IntEntry) bool { return true }
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153 func IntWMS(entry IntEntry) bool { return entry.WMS }
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154 func IntWFS(entry IntEntry) bool { return entry.WFS }
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155 func IntWithStyle(entry IntEntry) bool { return entry.Style }
444
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156
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157 func IntByName(name string) func(IntEntry) bool {
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158 return func(entry IntEntry) bool { return entry.Name == name }
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159 }
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160
913
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diff changeset
161 func IntAnd(accept ...func(IntEntry) bool) func(IntEntry) bool {
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diff changeset
162 return func(entry IntEntry) bool {
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163 for _, a := range accept {
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diff changeset
164 if !a(entry) {
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165 return false
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166 }
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167 }
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168 return true
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169 }
871
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170 }
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diff changeset
171
474
11d80120ed3d Renamed published services to internal services to be more symmetrical to external services.
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diff changeset
172 func (ps *IntServices) Filter(accept func(IntEntry) bool) []IntEntry {
444
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diff changeset
173 ps.mu.Lock()
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parents: 442
diff changeset
174 defer ps.mu.Unlock()
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parents: 442
diff changeset
175 if ps.entries == nil {
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parents: 442
diff changeset
176 if err := ps.load(); err != nil {
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parents: 442
diff changeset
177 log.Printf("error: %v\n", err)
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diff changeset
178 return nil
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diff changeset
179 }
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parents: 442
diff changeset
180 }
474
11d80120ed3d Renamed published services to internal services to be more symmetrical to external services.
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parents: 473
diff changeset
181 pe := make([]IntEntry, 0, len(ps.entries))
445
37742dd72fdb Use a sorted slice for published layers to get rid of extra sorting.
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parents: 444
diff changeset
182 for _, e := range ps.entries {
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parents: 444
diff changeset
183 if accept(e) {
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parents: 444
diff changeset
184 pe = append(pe, e)
444
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diff changeset
185 }
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parents: 442
diff changeset
186 }
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parents: 442
diff changeset
187
445
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parents: 444
diff changeset
188 return pe
444
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parents: 442
diff changeset
189 }