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annotate pkg/models/intservices.go @ 4935:c64dba002726 fairway-marks-import

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Load and prepare data models for layer groups. TODO: Feed config to GeoServer.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 16 Feb 2020 15:16:22 +0100
parents 4a9a1e323e11
children 4a816ecf70de
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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 }
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41
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42 LayerGroup struct {
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43 Name string `json:"name"`
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44 Layers []string `json:"layers"`
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45 }
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46
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47 IntServices struct {
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48 mu sync.Mutex
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49 entries []IntEntry
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50 layerGroups []LayerGroup
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51 }
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52 )
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53
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54 const (
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55 selectServicesSQL = `
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56 SELECT schema, name,
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57 view_def, key_column, auth_name || ':' || auth_srid,
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58 style IS NOT NULL, as_wms, as_wfs
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59 FROM sys_admin.published_services
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60 LEFT JOIN spatial_ref_sys USING (srid)
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61 WHERE schema = $1
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62 ORDER by name`
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63
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64 selectGroupedLayersSQL = `
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65 SELECT group_name, name
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66 FROM sys_admin.grouped_layers
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67 ORDER BY group_name, ord`
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68
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69 selectStyleSQL = `
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70 SELECT style
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71 FROM sys_admin.published_services
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72 WHERE name = $1 AND schema = $2`
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73
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74 updateStyleSQL = `
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75 UPDATE sys_admin.published_services
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76 SET style = $1
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77 WHERE name = $2 AND schema = $3`
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78 )
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79
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80 var InternalServices = &IntServices{}
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81
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82 func (e *IntEntry) LoadStyle() ([]byte, error) {
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83 var style []byte
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84 ctx := context.Background()
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85 err := auth.RunAs(ctx, "sys_admin",
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86 func(conn *sql.Conn) error {
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87 return conn.QueryRowContext(
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88 ctx,
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89 selectStyleSQL,
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90 e.Name, e.Schema).Scan(&style)
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91 })
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92 return style, err
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93 }
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94
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95 func UpdateInternalStyle(req *http.Request, name string, style []byte) error {
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96 return auth.RunAsSessionUser(req, func(conn *sql.Conn) error {
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97 _, err := conn.ExecContext(
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98 req.Context(), updateStyleSQL,
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99 style, name, DatabaseScheme)
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100 if err == nil {
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101 InternalServices.Invalidate()
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102 }
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103 return err
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104 })
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105 }
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106
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107 func (ps *IntServices) LayerGroups() []LayerGroup {
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108 ps.mu.Lock()
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109 defer ps.mu.Unlock()
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110
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111 if ps.entries == nil {
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112 if err := ps.load(); err != nil {
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113 log.Printf("error: %v\n", err)
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114 return nil
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115 }
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116 }
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117
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118 // To avoid races we simple make a deep copy.
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119 // As we don't have such many of them it light weight enough for now.
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120 groups := make([]LayerGroup, len(ps.layerGroups))
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diff changeset
121 for i := range groups {
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122 layers := make([]string, len(ps.layerGroups[i].Layers))
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parents: 4918
diff changeset
123 copy(layers, ps.layerGroups[i].Layers)
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diff changeset
124 groups[i] = LayerGroup{Name: ps.layerGroups[i].Name, Layers: layers}
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parents: 4918
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125 }
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diff changeset
126 return groups
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127 }
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diff changeset
128
474
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parents: 473
diff changeset
129 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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parents: 456
diff changeset
130 ps.mu.Lock()
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parents: 456
diff changeset
131 defer ps.mu.Unlock()
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parents: 456
diff changeset
132
788c87b99bae 465:a8e217119085 removed the mutex and the lazy loading from the internal publishing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 456
diff changeset
133 if ps.entries == nil {
788c87b99bae 465:a8e217119085 removed the mutex and the lazy loading from the internal publishing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 456
diff changeset
134 if err := ps.load(); err != nil {
788c87b99bae 465:a8e217119085 removed the mutex and the lazy loading from the internal publishing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 456
diff changeset
135 log.Printf("error: %v\n", err)
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parents: 456
diff changeset
136 return "", false
788c87b99bae 465:a8e217119085 removed the mutex and the lazy loading from the internal publishing.
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parents: 456
diff changeset
137 }
788c87b99bae 465:a8e217119085 removed the mutex and the lazy loading from the internal publishing.
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parents: 456
diff changeset
138 }
788c87b99bae 465:a8e217119085 removed the mutex and the lazy loading from the internal publishing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 456
diff changeset
139
456
a8e217119085 Fixed internal proxy resolution.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 446
diff changeset
140 if ps.has(name) {
a8e217119085 Fixed internal proxy resolution.
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parents: 446
diff changeset
141 return config.GeoServerURL() + "/" + name, true
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parents: 446
diff changeset
142 }
a8e217119085 Fixed internal proxy resolution.
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parents: 446
diff changeset
143 return "", false
a8e217119085 Fixed internal proxy resolution.
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parents: 446
diff changeset
144 }
441
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145
474
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diff changeset
146 func (ps *IntServices) has(service string) bool {
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parents: 473
diff changeset
147 var check func(*IntEntry) bool
456
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parents: 446
diff changeset
148 switch service {
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parents: 446
diff changeset
149 case "wms":
474
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diff changeset
150 check = func(e *IntEntry) bool { return e.WMS }
456
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parents: 446
diff changeset
151 case "wfs":
474
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diff changeset
152 check = func(e *IntEntry) bool { return e.WFS }
456
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parents: 446
diff changeset
153 default:
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parents: 446
diff changeset
154 return false
a8e217119085 Fixed internal proxy resolution.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 446
diff changeset
155 }
a8e217119085 Fixed internal proxy resolution.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 446
diff changeset
156 for i := range ps.entries {
a8e217119085 Fixed internal proxy resolution.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 446
diff changeset
157 if check(&ps.entries[i]) {
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parents: 446
diff changeset
158 return true
441
76a76691a298 Load the configuration of the published services from database.
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parents:
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159 }
76a76691a298 Load the configuration of the published services from database.
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parents:
diff changeset
160 }
456
a8e217119085 Fixed internal proxy resolution.
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parents: 446
diff changeset
161 return false
441
76a76691a298 Load the configuration of the published services from database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
162 }
76a76691a298 Load the configuration of the published services from database.
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parents:
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163
474
11d80120ed3d Renamed published services to internal services to be more symmetrical to external services.
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parents: 473
diff changeset
164 func (ps *IntServices) load() error {
446
659c04feb2dc Made use of sorted slice in external proxied services symmetric to published services.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 445
diff changeset
165 // make empty slice to prevent retry if slice is empty.
474
11d80120ed3d Renamed published services to internal services to be more symmetrical to external services.
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parents: 473
diff changeset
166 ps.entries = []IntEntry{}
4935
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parents: 4918
diff changeset
167 ps.layerGroups = []LayerGroup{}
1327
cabf4789e02b To make golint happier made context.Context to be the first argument of auth.RunAs.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1288
diff changeset
168 ctx := context.Background()
4935
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169
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170 // Load the internal layers.
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diff changeset
171 entries := func(conn *sql.Conn) error {
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parents: 4918
diff changeset
172 rows, err := conn.QueryContext(
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
173 ctx, selectServicesSQL, DatabaseScheme)
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parents: 4918
diff changeset
174 if err != nil {
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parents: 4918
diff changeset
175 return err
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
176 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
177 defer rows.Close()
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parents: 4918
diff changeset
178 for rows.Next() {
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parents: 4918
diff changeset
179 var entry IntEntry
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parents: 4918
diff changeset
180 if err := rows.Scan(
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
181 &entry.Schema, &entry.Name,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
182 &entry.SQL, &entry.KeyColumn, &entry.SRS, &entry.Style,
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parents: 4918
diff changeset
183 &entry.WMS, &entry.WFS,
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parents: 4918
diff changeset
184 ); err != nil {
441
76a76691a298 Load the configuration of the published services from database.
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parents:
diff changeset
185 return err
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parents:
diff changeset
186 }
4935
c64dba002726 Load and prepare data models for layer groups. TODO: Feed config to GeoServer.
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diff changeset
187 ps.entries = append(ps.entries, entry)
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parents: 4918
diff changeset
188 }
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parents: 4918
diff changeset
189 return rows.Err()
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parents: 4918
diff changeset
190 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
191
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parents: 4918
diff changeset
192 // Load the layer groups.
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parents: 4918
diff changeset
193 groups := func(conn *sql.Conn) error {
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parents: 4918
diff changeset
194 rows, err := conn.QueryContext(ctx, selectGroupedLayersSQL)
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parents: 4918
diff changeset
195 if err != nil {
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parents: 4918
diff changeset
196 return err
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parents: 4918
diff changeset
197 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
198 defer rows.Close()
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
199
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
200 for rows.Next() {
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parents: 4918
diff changeset
201 var group, layer string
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parents: 4918
diff changeset
202 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
203 return err
501
c10c76c92797 Use metamorphic database connections for auth.RunAs().
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 474
diff changeset
204 }
4935
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parents: 4918
diff changeset
205 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.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
206 ps.layerGroups[n-1].Layers = append(ps.layerGroups[n-1].Layers, layer)
c64dba002726 Load and prepare data models for layer groups. TODO: Feed config to GeoServer.
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parents: 4918
diff changeset
207 } else {
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parents: 4918
diff changeset
208 ps.layerGroups = append(ps.layerGroups, LayerGroup{
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parents: 4918
diff changeset
209 Name: group,
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
210 Layers: []string{layer},
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4918
diff changeset
211 })
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
212 }
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
213 }
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 rows.Err()
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
215 }
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
216
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
217 return auth.RunAllAs(ctx, "sys_admin", entries, groups)
441
76a76691a298 Load the configuration of the published services from database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
218 }
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
219
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
220 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
221 ps.mu.Lock()
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
222 ps.entries = nil
4935
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parents: 4918
diff changeset
223 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
224 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
225 }
444
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
226
915
2ebf677fc2e1 Load style data only on demand to not waste menory.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 913
diff changeset
227 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
228 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
229 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
230 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
231 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
232
871
f0b6852c14d1 More on uploading styles to gemma.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 634
diff changeset
233 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
234 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
235 }
f0b6852c14d1 More on uploading styles to gemma.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 634
diff changeset
236
913
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
237 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
238 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
239 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
240 if !a(entry) {
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
241 return false
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
242 }
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
243 }
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
244 return true
876d1f5433be Started with direct applying style after modification via controller. WIP.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 877
diff changeset
245 }
871
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
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
248 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
249 ps.mu.Lock()
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
250 defer ps.mu.Unlock()
c315885825e5 Publish WFS layers on GeoServer from database configuration.
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parents: 442
diff changeset
251 if ps.entries == nil {
c315885825e5 Publish WFS layers on GeoServer from database configuration.
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parents: 442
diff changeset
252 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
253 log.Printf("error: %v\n", err)
c315885825e5 Publish WFS layers on GeoServer from database configuration.
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parents: 442
diff changeset
254 return nil
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
255 }
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
256 }
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
257 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
258 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
259 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
260 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
261 }
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
262 }
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
263
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
264 return pe
444
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
265 }