Mercurial > gemma

annotate pkg/models/intservices.go @ 634:0c79068c46b7

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Removed unreachable code.
author Sascha L. Teichmann <teichmann@intevation.de>
date Wed, 12 Sep 2018 19:53:10 +0200
parents ac325d191009
children f0b6852c14d1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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1 package models
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2
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3 import (
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4 "context"
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5 "database/sql"
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6 "log"
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7 "sync"
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8
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9 "gemma.intevation.de/gemma/pkg/auth"
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10 "gemma.intevation.de/gemma/pkg/config"
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11 )
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12
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13 type IntEntry struct {
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14 Name string `json:"name"`
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15 Style sql.NullString `json:"-"` // This should be done separately.
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16 WMS bool `json:"wms"`
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17 WFS bool `json:"wfs"`
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18 }
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19
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20 type IntServices struct {
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21 entries []IntEntry
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22 mu sync.Mutex
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23 }
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24
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25 const selectPublishedServices = `SELECT relname, style, as_wms, as_wfs
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26 FROM sys_admin.published_services JOIN pg_class ON name = oid ORDER by relname`
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27
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28 var InternalServices = &IntServices{}
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29
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30 func (ps *IntServices) Find(name string) (string, bool) {
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31 ps.mu.Lock()
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32 defer ps.mu.Unlock()
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34 if ps.entries == nil {
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35 if err := ps.load(); err != nil {
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36 log.Printf("error: %v\n", err)
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37 return "", false
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38 }
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39 }
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40
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41 if ps.has(name) {
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42 return config.GeoServerURL() + "/" + name, true
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43 }
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44 return "", false
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45 }
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46
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47 func (ps *IntServices) has(service string) bool {
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48 var check func(*IntEntry) bool
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49 switch service {
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50 case "wms":
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51 check = func(e *IntEntry) bool { return e.WMS }
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52 case "wfs":
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53 check = func(e *IntEntry) bool { return e.WFS }
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54 default:
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55 return false
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56 }
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57 for i := range ps.entries {
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58 if check(&ps.entries[i]) {
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59 return true
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60 }
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61 }
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62 return false
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63 }
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64
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65 func (ps *IntServices) load() error {
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66 // make empty slice to prevent retry if slice is empty.
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67 ps.entries = []IntEntry{}
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68 return auth.RunAs("sys_admin", context.Background(),
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69 func(conn *sql.Conn) error {
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70 rows, err := conn.QueryContext(
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71 context.Background(), selectPublishedServices)
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72 if err != nil {
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73 return err
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74 }
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75 defer rows.Close()
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76 for rows.Next() {
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77 var entry IntEntry
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78 if err := rows.Scan(
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79 &entry.Name, &entry.Style,
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80 &entry.WMS, &entry.WFS,
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81 ); err != nil {
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82 return err
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83 }
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84 ps.entries = append(ps.entries, entry)
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85 }
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86 return rows.Err()
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87 })
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88 }
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89
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90 func (ps *IntServices) Invalidate() {
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91 ps.mu.Lock()
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92 ps.entries = nil
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93 ps.mu.Unlock()
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94 }
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95
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96 func InternalAll(IntEntry) bool { return true }
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97 func IntWMS(entry IntEntry) bool { return entry.WMS }
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98 func IntWFS(entry IntEntry) bool { return entry.WFS }
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99
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100 func (ps *IntServices) Filter(accept func(IntEntry) bool) []IntEntry {
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101 ps.mu.Lock()
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102 defer ps.mu.Unlock()
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103 if ps.entries == nil {
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104 if err := ps.load(); err != nil {
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105 log.Printf("error: %v\n", err)
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106 return nil
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107 }
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108 }
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109 pe := make([]IntEntry, 0, len(ps.entries))
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110 for _, e := range ps.entries {
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111 if accept(e) {
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112 pe = append(pe, e)
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113 }
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114 }
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115
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116 return pe
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117 }