Mercurial > gemma

annotate pkg/models/intservices.go @ 4995:4a816ecf70de wmst-config

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Added support for WMS-Time in configuring the GeoServer.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 06 Mar 2020 11:48:11 +0100
parents c64dba002726
children 5f47eeea988d
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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 // * 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 const DatabaseScheme = "waterway"
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29
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30 type (
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31 IntEntry struct {
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32 Schema string `json:"schema"`
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33 Name string `json:"name"`
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34 SQL *string `json:"sql"`
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35 KeyColumn *string `json:"keycolumn"`
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36 SRS *string `json:"srs"`
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37 Style bool `json:"style"`
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38 WMS bool `json:"wms"`
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39 WFS bool `json:"wfs"`
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40 WMSTAttribute *string `json:"wmst-attribute"`
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41 WMSTEndAttribute *string `json:"wmst-end-attribute"`
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42 }
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43
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44 LayerGroup struct {
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45 Name string `json:"name"`
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46 Layers []string `json:"layers"`
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47 }
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48
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49 IntServices struct {
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50 mu sync.Mutex
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51 entries []IntEntry
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52 layerGroups []LayerGroup
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53 }
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54 )
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55
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56 const (
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57 selectServicesSQL = `
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58 SELECT
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59 schema,
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60 name,
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61 view_def,
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62 key_column,
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63 auth_name || ':' || auth_srid,
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64 style IS NOT NULL,
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65 as_wms,
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66 as_wfs,
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67 wmst_attribute,
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68 wmst_end_attribute
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69 FROM sys_admin.published_services
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70 LEFT JOIN spatial_ref_sys USING (srid)
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71 WHERE schema = $1
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72 ORDER by name`
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73
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74 selectGroupedLayersSQL = `
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75 SELECT group_name, name
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76 FROM sys_admin.grouped_layers
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77 ORDER BY group_name, ord`
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78
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79 selectStyleSQL = `
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80 SELECT style
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81 FROM sys_admin.published_services
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82 WHERE name = $1 AND schema = $2`
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83
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84 updateStyleSQL = `
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85 UPDATE sys_admin.published_services
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86 SET style = $1
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87 WHERE name = $2 AND schema = $3`
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88 )
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89
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90 var InternalServices = &IntServices{}
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91
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92 func (e *IntEntry) LoadStyle() ([]byte, error) {
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93 var style []byte
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94 ctx := context.Background()
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95 err := auth.RunAs(ctx, "sys_admin",
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96 func(conn *sql.Conn) error {
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97 return conn.QueryRowContext(
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98 ctx,
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99 selectStyleSQL,
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100 e.Name, e.Schema).Scan(&style)
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101 })
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102 return style, err
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103 }
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104
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105 func UpdateInternalStyle(req *http.Request, name string, style []byte) error {
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106 return auth.RunAsSessionUser(req, func(conn *sql.Conn) error {
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107 _, err := conn.ExecContext(
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108 req.Context(), updateStyleSQL,
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109 style, name, DatabaseScheme)
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110 if err == nil {
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111 InternalServices.Invalidate()
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112 }
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113 return err
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114 })
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115 }
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116
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117 func (ps *IntServices) LayerGroups() []LayerGroup {
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118 ps.mu.Lock()
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119 defer ps.mu.Unlock()
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120
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121 if ps.entries == nil {
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122 if err := ps.load(); err != nil {
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123 log.Printf("error: %v\n", err)
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124 return nil
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125 }
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126 }
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127
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128 // To avoid races we simple make a deep copy.
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129 // As we don't have such many of them it light weight enough for now.
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130 groups := make([]LayerGroup, len(ps.layerGroups))
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131 for i := range groups {
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132 layers := make([]string, len(ps.layerGroups[i].Layers))
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133 copy(layers, ps.layerGroups[i].Layers)
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134 groups[i] = LayerGroup{Name: ps.layerGroups[i].Name, Layers: layers}
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135 }
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136 return groups
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137 }
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138
474
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139 func (ps *IntServices) Find(name string) (string, bool) {
469
788c87b99bae 465:a8e217119085 removed the mutex and the lazy loading from the internal publishing.
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140 ps.mu.Lock()
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141 defer ps.mu.Unlock()
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142
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parents: 456
diff changeset
143 if ps.entries == nil {
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parents: 456
diff changeset
144 if err := ps.load(); err != nil {
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parents: 456
diff changeset
145 log.Printf("error: %v\n", err)
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146 return "", false
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147 }
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148 }
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149
456
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diff changeset
150 if ps.has(name) {
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151 return config.GeoServerURL() + "/" + name, true
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152 }
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153 return "", false
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154 }
441
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155
474
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156 func (ps *IntServices) has(service string) bool {
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157 var check func(*IntEntry) bool
456
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diff changeset
158 switch service {
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diff changeset
159 case "wms":
474
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160 check = func(e *IntEntry) bool { return e.WMS }
456
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161 case "wfs":
474
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162 check = func(e *IntEntry) bool { return e.WFS }
456
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diff changeset
163 default:
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164 return false
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165 }
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diff changeset
166 for i := range ps.entries {
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diff changeset
167 if check(&ps.entries[i]) {
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168 return true
441
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169 }
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170 }
456
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diff changeset
171 return false
441
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172 }
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173
474
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diff changeset
174 func (ps *IntServices) load() error {
446
659c04feb2dc Made use of sorted slice in external proxied services symmetric to published services.
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parents: 445
diff changeset
175 // make empty slice to prevent retry if slice is empty.
474
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diff changeset
176 ps.entries = []IntEntry{}
4935
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177 ps.layerGroups = []LayerGroup{}
1327
cabf4789e02b To make golint happier made context.Context to be the first argument of auth.RunAs.
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parents: 1288
diff changeset
178 ctx := context.Background()
4935
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179
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180 // Load the internal layers.
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181 entries := func(conn *sql.Conn) error {
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182 rows, err := conn.QueryContext(
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diff changeset
183 ctx, selectServicesSQL, DatabaseScheme)
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184 if err != nil {
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185 return err
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186 }
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diff changeset
187 defer rows.Close()
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diff changeset
188 for rows.Next() {
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189 var entry IntEntry
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diff changeset
190 if err := rows.Scan(
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diff changeset
191 &entry.Schema, &entry.Name,
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diff changeset
192 &entry.SQL, &entry.KeyColumn, &entry.SRS, &entry.Style,
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193 &entry.WMS, &entry.WFS,
4995
4a816ecf70de Added support for WMS-Time in configuring the GeoServer.
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parents: 4935
diff changeset
194 &entry.WMSTAttribute, &entry.WMSTEndAttribute,
4935
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diff changeset
195 ); err != nil {
441
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196 return err
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parents:
diff changeset
197 }
4935
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diff changeset
198 ps.entries = append(ps.entries, entry)
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199 }
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diff changeset
200 return rows.Err()
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diff changeset
201 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
202
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diff changeset
203 // Load the layer groups.
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diff changeset
204 groups := func(conn *sql.Conn) error {
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parents: 4918
diff changeset
205 rows, err := conn.QueryContext(ctx, selectGroupedLayersSQL)
c64dba002726 Load and prepare data models for layer groups. TODO: Feed config to GeoServer.
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parents: 4918
diff changeset
206 if err != nil {
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parents: 4918
diff changeset
207 return err
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diff changeset
208 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
209 defer rows.Close()
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parents: 4918
diff changeset
210
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parents: 4918
diff changeset
211 for rows.Next() {
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parents: 4918
diff changeset
212 var group, layer string
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parents: 4918
diff changeset
213 if err := rows.Scan(&group, &layer); err != nil {
c64dba002726 Load and prepare data models for layer groups. TODO: Feed config to GeoServer.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
214 return err
501
c10c76c92797 Use metamorphic database connections for auth.RunAs().
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 474
diff changeset
215 }
4935
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diff changeset
216 if n := len(ps.layerGroups); n > 0 && ps.layerGroups[n-1].Name == group {
c64dba002726 Load and prepare data models for layer groups. TODO: Feed config to GeoServer.
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parents: 4918
diff changeset
217 ps.layerGroups[n-1].Layers = append(ps.layerGroups[n-1].Layers, layer)
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parents: 4918
diff changeset
218 } else {
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diff changeset
219 ps.layerGroups = append(ps.layerGroups, LayerGroup{
c64dba002726 Load and prepare data models for layer groups. TODO: Feed config to GeoServer.
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parents: 4918
diff changeset
220 Name: group,
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parents: 4918
diff changeset
221 Layers: []string{layer},
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
222 })
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
223 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
224 }
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parents: 4918
diff changeset
225 return rows.Err()
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
226 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
227
c64dba002726 Load and prepare data models for layer groups. TODO: Feed config to GeoServer.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
228 return auth.RunAllAs(ctx, "sys_admin", entries, groups)
441
76a76691a298 Load the configuration of the published services from database.
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parents:
diff changeset
229 }
442
fc37e7072022 Moved some models used in controllers to to model package because they may be needed elsewhere (e.g. GeoServer config).
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parents: 441
diff changeset
230
474
11d80120ed3d Renamed published services to internal services to be more symmetrical to external services.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 473
diff changeset
231 func (ps *IntServices) Invalidate() {
442
fc37e7072022 Moved some models used in controllers to to model package because they may be needed elsewhere (e.g. GeoServer config).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 441
diff changeset
232 ps.mu.Lock()
fc37e7072022 Moved some models used in controllers to to model package because they may be needed elsewhere (e.g. GeoServer config).
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parents: 441
diff changeset
233 ps.entries = nil
4935
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diff changeset
234 ps.layerGroups = nil
442
fc37e7072022 Moved some models used in controllers to to model package because they may be needed elsewhere (e.g. GeoServer config).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 441
diff changeset
235 ps.mu.Unlock()
fc37e7072022 Moved some models used in controllers to to model package because they may be needed elsewhere (e.g. GeoServer config).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 441
diff changeset
236 }
444
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
237
915
2ebf677fc2e1 Load style data only on demand to not waste menory.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 913
diff changeset
238 func InternalAll(IntEntry) bool { return true }
2ebf677fc2e1 Load style data only on demand to not waste menory.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 913
diff changeset
239 func IntWMS(entry IntEntry) bool { return entry.WMS }
2ebf677fc2e1 Load style data only on demand to not waste menory.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 913
diff changeset
240 func IntWFS(entry IntEntry) bool { return entry.WFS }
4606
dfe9cde6a20c Reflect database model changes for SQL views in backend
Tom Gottfried <tom@intevation.de>
parents: 1327
diff changeset
241 func IntSQLView(entry IntEntry) bool { return entry.SQL != nil }
915
2ebf677fc2e1 Load style data only on demand to not waste menory.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 913
diff changeset
242 func IntWithStyle(entry IntEntry) bool { return entry.Style }
444
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
243
871
f0b6852c14d1 More on uploading styles to gemma.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 634
diff changeset
244 func IntByName(name string) func(IntEntry) bool {
f0b6852c14d1 More on uploading styles to gemma.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 634
diff changeset
245 return func(entry IntEntry) bool { return entry.Name == name }
f0b6852c14d1 More on uploading styles to gemma.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 634
diff changeset
246 }
f0b6852c14d1 More on uploading styles to gemma.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 634
diff changeset
247
913
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
248 func IntAnd(accept ...func(IntEntry) bool) func(IntEntry) bool {
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
249 return func(entry IntEntry) bool {
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
250 for _, a := range accept {
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
251 if !a(entry) {
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
252 return false
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
253 }
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
254 }
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
255 return true
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
256 }
871
f0b6852c14d1 More on uploading styles to gemma.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 634
diff changeset
257 }
f0b6852c14d1 More on uploading styles to gemma.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 634
diff changeset
258
474
11d80120ed3d Renamed published services to internal services to be more symmetrical to external services.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 473
diff changeset
259 func (ps *IntServices) Filter(accept func(IntEntry) bool) []IntEntry {
444
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
260 ps.mu.Lock()
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
261 defer ps.mu.Unlock()
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
262 if ps.entries == nil {
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
263 if err := ps.load(); err != nil {
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
264 log.Printf("error: %v\n", err)
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
265 return nil
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
266 }
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
267 }
474
11d80120ed3d Renamed published services to internal services to be more symmetrical to external services.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 473
diff changeset
268 pe := make([]IntEntry, 0, len(ps.entries))
445
37742dd72fdb Use a sorted slice for published layers to get rid of extra sorting.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 444
diff changeset
269 for _, e := range ps.entries {
37742dd72fdb Use a sorted slice for published layers to get rid of extra sorting.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 444
diff changeset
270 if accept(e) {
37742dd72fdb Use a sorted slice for published layers to get rid of extra sorting.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 444
diff changeset
271 pe = append(pe, e)
444
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
272 }
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
273 }
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
274
445
37742dd72fdb Use a sorted slice for published layers to get rid of extra sorting.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 444
diff changeset
275 return pe
444
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
276 }