Mercurial > gemma

annotate pkg/controllers/system.go @ 3302:ec6163c6687d

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'Historicise' gauges on import Gauge data sets will be updated or a new version will be inserted depending on temporal validity and a timestamp marking the last update in the RIS-Index of a data set. The trigger on date_info is removed because the value is actually an attribut coming from the RIS-Index. Gauge measurements and predictions are associated to the version with matching temporal validity. Bottlenecks are always associated to the actual version of the gauge, although this might change as soon as bottlenecks are 'historicised', too.
author Tom Gottfried <tom@intevation.de>
date Thu, 16 May 2019 18:41:43 +0200
parents 8a4fb02ee60a
children a688a478e35f
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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 Wilde <sascha.wilde@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 "fmt"
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20 "io/ioutil"
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21 "net/http"
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22 "strings"
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23
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24 "gemma.intevation.de/gemma/pkg/config"
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25 "gemma.intevation.de/gemma/pkg/models"
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26 "github.com/gorilla/mux"
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27 )
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28
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29 const (
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30 getFeatureColourSQL = `SELECT r,g,b,a
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31 FROM systemconf.feature_colours
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32 WHERE feature_name = $1 AND style_attr = $2`
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33 setFeatureColourSQL = `UPDATE systemconf.feature_colours
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34 SET (r, g, b, a) = ($3, $4, $5, $6)
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35 WHERE feature_name = $1 AND style_attr = $2`
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36 )
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37
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38 // System status end points
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39
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40 func showSystemLog(
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41 _ interface{}, req *http.Request,
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42 _ *sql.Conn,
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43 ) (jr JSONResult, err error) {
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44
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45 serviceName := mux.Vars(req)["service"]
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46 fileName := mux.Vars(req)["file"]
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47
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48 // The following check is currently most likely unnecessary as I wasn't
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49 // able to inject a verbatim '/' via the middleware, but better be on
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50 // the safe site...
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51 if strings.Contains(fileName, "/") {
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52 err = JSONError{http.StatusBadRequest,
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53 "error: no slashes allowed in file name"}
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54 return
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55 }
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56
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57 var path string
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58
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59 switch serviceName {
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60 case "apache2", "postgresql":
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61 path = "/var/log/" + serviceName + "/" + fileName
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62 default:
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63 err = JSONError{http.StatusBadRequest,
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64 "error: invalid service: " + serviceName}
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65 return
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66 }
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67
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68 var txt []byte
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69
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70 if txt, err = ioutil.ReadFile(path); err != nil {
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71 return
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72 }
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73
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74 jr = JSONResult{
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75 Result: struct {
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76 Path string `json:"path"`
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77 Content string `json:"content"`
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78 }{path, string(txt)},
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79 }
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80 return
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81 }
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82
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83 func getSystemConfig(
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84 _ interface{}, req *http.Request,
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85 _ *sql.Conn,
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86 ) (jr JSONResult, err error) {
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87
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88 cfg := config.PublishedConfig()
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89 if cfg == "" {
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90 jr = JSONResult{Result: strings.NewReader("{}")}
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91 return
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92 }
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93
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94 var data []byte
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95 if data, err = ioutil.ReadFile(cfg); err != nil {
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96 return
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97 }
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98
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99 jr = JSONResult{Result: bytes.NewReader(data)}
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100 return
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101 }
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102
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103 // Map/Feature style end points
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104
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105 func getFeatureStyle(
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106 _ interface{},
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107 req *http.Request,
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108 db *sql.Conn,
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109 ) (jr JSONResult, err error) {
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110
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111 feature := mux.Vars(req)["feature"]
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112 attr := mux.Vars(req)["attr"]
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113
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114 c := models.Colour{}
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115 err = db.QueryRowContext(
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116 req.Context(),
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117 getFeatureColourSQL,
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118 feature, attr,
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119 ).Scan(&c.R, &c.G, &c.B, &c.A)
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120
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121 switch {
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122 case err == sql.ErrNoRows:
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123 err = JSONError{
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124 Code: http.StatusNotFound,
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125 Message: "Requestes style not found.",
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126 }
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127 return
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128 case err != nil:
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129 return
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130 }
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131
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132 jr.Result = &struct {
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133 Colour models.Colour `json:"colour"`
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134 Code string `json:"code"`
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135 }{c, fmt.Sprintf("rgba(%d, %d, %d, %g)", c.R, c.G, c.B, c.A)}
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136 return
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137 }
846
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138
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139 func setFeatureStyle(
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140 input interface{},
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141 req *http.Request,
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142 db *sql.Conn,
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143 ) (jr JSONResult, err error) {
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144
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145 feature := mux.Vars(req)["feature"]
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146 attr := mux.Vars(req)["attr"]
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147
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148 c := input.(*models.Colour)
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149 if !c.IsValid() {
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150 err = JSONError{http.StatusBadRequest, "error: invalid colours"}
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151 return
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152 }
846
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153
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154 var res sql.Result
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155 res, err = db.ExecContext(
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156 req.Context(),
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157 setFeatureColourSQL,
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158 feature, attr,
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159 c.R, c.G, c.B, c.A)
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160
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161 if err != nil {
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162 return
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163 }
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164
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165 if n, err2 := res.RowsAffected(); err2 == nil && n == 0 {
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166 err = JSONError{
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167 Code: http.StatusNotFound,
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168 Message: "Requestes style not found.",
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169 }
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170 return
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171 }
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172
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173 jr = JSONResult{
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174 Code: http.StatusCreated,
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175 Result: struct {
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176 Result string `json:"result"`
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177 }{"success"},
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178 }
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179 return
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180 }