Mercurial > hg > egg-tcls
annotate fetch_weather.pl @ 399:a80de0130e45
fetch_weather: Support gzip encoded content in HTTP requests.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Fri, 06 Jan 2017 15:04:12 +0200 |
parents | 6419327df9e7 |
children | f69aff75d1e2 |
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381 | 1 #!/usr/bin/perl -w |
182 | 2 ########################################################################## |
3 # | |
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4 # Fetch Weather v0.7 by Matti 'ccr' Hamalainen <ccr@tnsp.org> |
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5 # (C) Copyright 2014-2016 Tecnic Software productions (TNSP) |
206 | 6 # This script is freely distributable under GNU GPL (version 2) license. |
182 | 7 # |
8 # Should be ran as a cronjob, and configured properly. | |
206 | 9 # */10 * * * * perl -w /absolute/path/to/fetch_weather.pl /path/to/configfile |
182 | 10 # |
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11 # Configuration file example is in fetch_weather.config |
182 | 12 # |
206 | 13 # Requires various Perl modules, in Debian the packages should be: |
14 # libwww-perl libxml-simple-perl libtimedate-perl | |
15 # | |
182 | 16 # |
17 ########################################################################## | |
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18 use strict; |
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19 use warnings; |
243 | 20 use utf8; |
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21 use LWP::UserAgent; |
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22 use HTTP::Message; |
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23 use HTML::Entities; |
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24 use Compress::Zlib; |
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25 use XML::Simple; |
189 | 26 use Date::Format; |
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27 use Date::Parse; |
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28 use Data::Dumper; |
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29 use File::Slurp; |
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30 use Text::CSV; |
166 | 31 |
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32 ### |
182 | 33 ### Configuration settings |
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34 ### |
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35 my %settings = ( |
166 | 36 "debug" => 0, |
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37 "opt_fmi" => 0, |
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38 "opt_tiehallinto" => 0, |
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39 "purge_threshold" => 60, |
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40 "fmi_api_key" => "", |
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41 "outfile" => "", |
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42 "tiehallinto_static_meta" => "tiehallinto.meta", |
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43 "http_user_agent" => "Mozilla/4.0 (compatible; MSIE 6.0; MSIE 5.5; Windows NT 6.0) Opera 10.63 [en]", |
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44 ); |
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45 |
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46 |
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47 ### |
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48 ### Helper functions |
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49 ### |
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50 sub mlog($) |
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51 { |
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52 print STDERR $_[0]; |
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53 } |
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54 |
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55 |
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56 sub fetch_http($) |
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57 { |
198 | 58 my $agent = LWP::UserAgent->new; |
59 $agent->agent($settings{"http_user_agent"}); | |
208
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60 $agent->timeout(20); |
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61 |
198 | 62 my $req = HTTP::Request->new(GET => $_[0]); |
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63 $req->header('Accept-Encoding' => scalar HTTP::Message::decodable()); |
339 | 64 |
198 | 65 return $agent->request($req); |
178
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66 } |
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67 |
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68 |
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69 sub str_trim($) |
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70 { |
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71 my $tmp = $_[0]; |
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72 $tmp =~ s/^\s*//; |
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73 $tmp =~ s/\s*$//; |
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74 return $tmp; |
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75 } |
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76 |
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77 |
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78 sub parse_timestamp($$) |
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79 { |
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80 my ($str, $offs) = @_; |
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81 if ($str =~ /^(\d+):(\d+)$/) |
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82 { |
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83 return $offs + (60 * 60 * $1) + ($2 * 60); |
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84 } |
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85 else |
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86 { |
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87 return $offs; |
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88 } |
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89 } |
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90 |
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91 |
194 | 92 sub format_time_gmt($) |
189 | 93 { |
94 # 2012-02-27T00:00:00Z | |
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95 return time2str("%Y-%m-%dT%TZ", $_[0], "UTC"); |
189 | 96 } |
97 | |
193 | 98 |
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99 ### |
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100 ### Helper functions |
178
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101 ### |
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102 |
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103 my %th_rain_states = |
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104 ( |
237 | 105 "Pouta" => "poutaa", |
106 "Heikko" => "heikkoa sadetta", | |
107 "Kohtalainen" => "kohtalaista sadetta", | |
108 "Voimakas" => "voimakasta sadetta", | |
212
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109 ); |
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110 |
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111 my $th_rain_states_k = join("|", map {quotemeta} sort { length($b)<=>length($a) } keys %th_rain_states); |
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112 |
242 | 113 sub translate_rain($) |
212
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114 { |
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115 my $tmp = $_[0]; |
237 | 116 $tmp =~ s/($th_rain_states_k)/$th_rain_states{$1}/igo; |
212
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117 return $tmp; |
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118 } |
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119 |
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120 |
244 | 121 my %th_cloud_states = |
122 ( | |
123 0 => "selkeää", | |
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124 1 => "melkein selkeää", |
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125 2 => "verrattain selkeää", |
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126 3 => "verrattain selkeää", |
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127 4 => "puolipilvistä", |
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128 5 => "verrattain pilvistä", |
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129 6 => "verrattain pilvistä", |
244 | 130 7 => "melkein pilvistä", |
131 8 => "pilvistä", | |
132 ); | |
133 | |
134 sub translate_clouds($) | |
135 { | |
247
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136 return "" if ($_[0] eq "NaN" || $_[0] eq ""); |
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137 my $tmp = int($_[0]); |
244 | 138 foreach my $n (sort { $a <=> $b } keys %th_cloud_states) |
139 { | |
247
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140 return $th_cloud_states{$n}." (".$n."/8)" if ($tmp == $n); |
244 | 141 } |
142 return $tmp; | |
143 } | |
144 | |
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145 |
228 | 146 sub plonk_data($) |
147 { | |
148 return defined($_[0]) ? $_[0] : ""; | |
149 } | |
150 | |
151 | |
237 | 152 sub plonk_data_lc($) |
153 { | |
154 return defined($_[0]) ? lc($_[0]) : ""; | |
155 } | |
156 | |
157 | |
158
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158 ### |
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159 ### Configuration handling |
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160 ### |
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161 sub opt_chk_bool($) |
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162 { |
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163 if (defined($settings{$_[0]})) |
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164 { |
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165 my $val = $settings{$_[0]}; |
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166 return ($val == 1 || $val eq "true" || $val eq "on" || $val eq "1"); |
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167 } |
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168 else |
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169 { |
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170 return 0; |
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171 } |
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172 } |
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173 |
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174 |
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175 sub opt_chk_valid($$) |
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176 { |
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177 if (defined($settings{$_[0]})) |
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178 { |
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179 my $val = $settings{$_[0]}; |
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180 return length($val) >= $_[1]; |
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181 } |
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182 else |
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183 { |
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184 return 0; |
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185 } |
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186 } |
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187 |
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188 |
324
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189 sub opt_get_int($) |
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190 { |
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191 if (defined($settings{$_[0]})) |
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192 { |
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193 return int($settings{$_[0]}); |
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194 } |
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195 else |
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196 { |
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197 return -1; |
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198 } |
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199 } |
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200 |
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201 |
164
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202 sub opt_get($) |
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203 { |
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204 if (defined($settings{$_[0]})) |
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205 { |
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206 return $settings{$_[0]}; |
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207 } |
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208 else |
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209 { |
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210 return undef; |
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211 } |
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212 } |
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213 |
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214 |
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215 sub opt_read_config($) |
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216 { |
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217 my $filename = $_[0]; |
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218 my $errors = 0; |
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219 my $line = 0; |
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220 |
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221 open(CONFFILE, "<", $filename) or die("Could not open configuration '".$filename."'!\n"); |
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222 while (<CONFFILE>) |
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223 { |
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224 $line++; |
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225 chomp; |
353 | 226 if (/(^\s*#|^\s*$)/) |
227 { | |
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228 # Ignore comments and empty lines |
353 | 229 } |
386 | 230 elsif (/^\s*\"?([a-zA-Z0-9_]+)\"?\s*=>?\s*(\d+),?\s*$/) |
231 { | |
164
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232 my $key = lc($1); |
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233 my $value = $2; |
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234 if (defined($settings{$key})) { |
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235 $settings{$key} = $value; |
353 | 236 } |
237 else | |
238 { | |
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239 mlog("[$filename:$line] Unknown setting '$key' = $value\n"); |
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240 $errors = 1; |
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241 } |
353 | 242 } |
386 | 243 elsif (/^\s*\"?([a-zA-Z0-9_]+)\"?\s*=>?\s*\"(.*?)\",?\s*$/) |
244 { | |
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245 my $key = lc($1); |
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246 my $value = $2; |
353 | 247 if (defined($settings{$key})) |
248 { | |
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249 $settings{$key} = $value; |
353 | 250 } |
251 else | |
252 { | |
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253 mlog("[$filename:$line] Unknown setting '$key' = '$value'\n"); |
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254 $errors = 1; |
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255 } |
353 | 256 } |
257 else | |
258 { | |
164
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259 mlog("[$filename:$line] Syntax error: $_\n"); |
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260 $errors = 1; |
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261 } |
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262 } |
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263 close(CONFFILE); |
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264 return $errors; |
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265 } |
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266 |
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267 |
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268 ### |
158
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269 ### Main program begins |
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270 ### |
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271 my $weatherdata = {}; |
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272 |
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273 die( |
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274 "Weather Fetch v0.7 by ccr/TNSP <ccr\@tnsp.org>\n". |
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275 "Usage: $0 <config file>\n" |
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276 ) unless scalar(@ARGV) >= 1; |
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277 |
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278 my $cfgfile = shift; |
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279 opt_read_config($cfgfile) == 0 or die("Errors while parsing configuration file '".$cfgfile."'.\n"); |
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280 |
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281 |
178
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282 ### |
354
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283 ### Load already cached data |
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284 ### |
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285 if (opt_chk_valid("outfile", 1)) |
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286 { |
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287 my $str = read_file(opt_get("outfile"), binmode => ':utf8', err_mode => 'quiet'); |
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288 if (defined($str)) |
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289 { |
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290 foreach my $line (split(/\s*\n\s*/, $str)) |
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291 { |
367
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292 my @mtmp = split(/\|/, $line, -1); |
356
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293 if (scalar(\@mtmp) >= 3) |
354
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294 { |
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295 $weatherdata->{shift @mtmp} = \@mtmp; |
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296 } |
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297 } |
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298 print STDERR scalar(keys %$weatherdata)." old records reloaded.\n" if (opt_get_int("debug") > 0); |
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299 } |
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300 } |
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301 |
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302 |
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303 ### |
338
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304 ### Fetch Tiehallinto data |
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305 ### |
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306 if (opt_chk_bool("opt_tiehallinto")) |
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307 { |
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308 my $uri = "http://tie.digitraffic.fi/sujuvuus/ws/roadWeather"; |
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309 my $res = fetch_http($uri); |
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310 if ($res->code >= 200 && $res->code <= 201) |
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311 { |
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312 my $xml = XMLin($res->decoded_content); |
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313 |
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314 if (!defined($xml->{"soap:Body"}) || !defined($xml->{"soap:Body"}{"RoadWeatherResponse"})) |
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315 { |
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316 print STDERR "ERROR: SOAP call result did not contain required data.\n"; |
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317 print STDERR $res->decoded_content."\n\n"; |
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318 } |
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319 else |
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320 { |
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321 my $data = $xml->{"soap:Body"}{"RoadWeatherResponse"}; |
349
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322 print STDERR "Checking Tiehallinto response from ".$uri."\n" if (opt_get_int("debug") > 0); |
338
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323 |
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324 # Check if we need to update the static meta data |
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325 my $meta_file = opt_get("tiehallinto_static_meta"); |
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326 my $fetch_meta = (-e $meta_file) ? 0 : 1; |
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327 |
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328 if (defined($data->{"laststaticdataupdate"})) |
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329 { |
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330 # Compare metadata cache file modification timestamp to info in XML |
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331 my $tmp1 = str2time($data->{"laststaticdataupdate"}); |
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332 my $tmp2 = (-e $meta_file) ? (stat($meta_file))[9] : -1; |
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333 $fetch_meta = 1 unless ($tmp1 < $tmp2); |
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334 } |
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335 |
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336 # Fetch or read the cache |
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337 my $meta_str; |
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338 if ($fetch_meta) |
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339 { |
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340 print STDERR "Fetching Tiehallinto static meta data.\n" if (opt_get_int("debug") > 0); |
377
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341 my $uri = "https://raw.githubusercontent.com/finnishtransportagency/metadata/master/csv/meta_rws_stations.csv"; |
338
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342 my $res = fetch_http($uri); |
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343 die("Failed to fetch $uri data.\n") unless ($res->code <= 200 && $res->code <= 201); |
339 | 344 |
338
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345 print STDERR "Storing to cache '$meta_file'.\n" if (opt_get_int("debug") > 0); |
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346 $meta_str = $res->decoded_content; |
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347 write_file($meta_file, {binmode => ':utf8'}, $meta_str); |
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348 } |
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349 else |
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350 { |
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351 print STDERR "Using CACHED Tiehallinto static meta data from '$meta_file'.\n" if (opt_get_int("debug") > 0); |
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352 $meta_str = read_file($meta_file, binmode => ':utf8'); |
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353 } |
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354 |
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355 # Parse the data .. |
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356 my $meta_data = {}; |
387
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357 # my $csv = Text::CSV->new({blank_is_undef => 1, decode_utf8 => 1, sep_char => ";"}); |
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358 my $csv = Text::CSV->new({blank_is_undef => 1, sep_char => ";"}); |
343
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359 die("Failed to instantiate Text::CSV object?\n") unless defined($csv); |
398 | 360 |
338
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361 foreach my $line (split(/\s*\n\s*/, $meta_str)) |
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362 { |
343
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363 if (defined($line) && $csv->parse($line)) |
338
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364 { |
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365 my @fields = $csv->fields(); |
363
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366 if (scalar(@fields) > 1) |
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367 { |
377
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368 $$meta_data{$fields[0]} = \@fields; |
363
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369 } |
338
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370 } |
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371 } |
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372 |
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373 # Parse XML and combine with the station meta data |
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374 if (defined($data->{"roadweatherdata"})) |
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375 { |
349
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376 my $nrecords = 0; |
338
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377 foreach my $wdata (@{$data->{"roadweatherdata"}{"roadweather"}}) |
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378 { |
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379 my $wid = $wdata->{"stationid"}; |
392
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380 if (defined($meta_data->{$wid}) && defined($meta_data->{$wid}[2]) && $meta_data->{$wid}[2] ne "") |
338
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381 { |
349
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382 $nrecords++; |
379
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383 $weatherdata->{$meta_data->{$wid}[2]} = |
338
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384 [ |
343
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385 1, |
338
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386 str2time(plonk_data($wdata->{"measurementtime"}{"utc"})), |
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387 plonk_data($wdata->{"airtemperature1"}), |
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388 |
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389 plonk_data($wdata->{"humidity"}), |
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390 plonk_data($wdata->{"averagewindspeed"}), |
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391 ]; |
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392 } |
377
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393 else |
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394 { |
397
799320c3386e
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395 print STDERR "Station ID #".$wid." not defined?\n" if (opt_get_int("debug") > 0); |
377
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396 } |
338
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397 } |
349
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398 print STDERR $nrecords." records from Tiehallinto.\n" if (opt_get_int("debug") > 0); |
338
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399 } |
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400 else |
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401 { |
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402 print STDERR "ERROR: Invalid (or unsupported) road weather data blob.\n"; |
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403 print STDERR $res->decoded_content."\n\n"; |
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404 } |
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405 } |
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406 } |
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407 } |
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408 |
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409 |
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410 ### |
158
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411 ### Fetch FMI data |
178
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412 ### |
164
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413 if (opt_chk_bool("opt_fmi")) |
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414 { |
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415 die("FMI data scrape enabled, but no API key set.\n") unless opt_chk_valid("fmi_api_key", 10); |
238
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416 my @fmitems = ("temperature", "humidity", "windspeedms", "totalcloudcover"); |
158
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417 |
189 | 418 my $uri = "http://data.fmi.fi/fmi-apikey/".opt_get("fmi_api_key"). |
419 "/wfs?request=getFeature&storedquery_id=fmi::observations::weather::". | |
420 "multipointcoverage". | |
421 # "timevaluepair". | |
194 | 422 "&starttime=".format_time_gmt(time() - 10*60)."&endtime=".format_time_gmt(time()). |
238
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423 "¶meters=".join(",", @fmitems)."&maxlocations=100&bbox=19,59,32,75"; |
164
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424 |
324
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425 print STDERR "FMI URI: ".$uri."\n" if (opt_get_int("debug") > 0); |
189 | 426 |
427 my $res = fetch_http($uri); | |
164
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428 if ($res->code >= 200 && $res->code <= 201) |
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429 { |
170
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430 my $xml = XMLin($res->decoded_content); |
169
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431 my $time_base = time(); |
339 | 432 |
208
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433 if (defined($xml->{"wfs:member"}{"omso:GridSeriesObservation"})) |
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434 { |
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435 my $fdata = $xml->{"wfs:member"}{"omso:GridSeriesObservation"}; |
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436 my $fshit = $fdata->{"om:result"}{"gmlcov:MultiPointCoverage"}; |
378
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437 |
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438 my @position_lines = split(/\n/, $fshit->{"gml:domainSet"}{"gmlcov:SimpleMultiPoint"}{"gmlcov:positions"}); |
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439 my @data_lines = split(/\n/, $fshit->{"gml:rangeSet"}{"gml:DataBlock"}{"gml:doubleOrNilReasonTupleList"}); |
208
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440 my @farray = (); |
169
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441 |
378
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442 if (scalar(@position_lines) == scalar(@data_lines)) |
169
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443 { |
378
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444 for (my $nline = 0; $nline < scalar(@position_lines); $nline++) |
208
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445 { |
382
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446 my $dline = str_trim($data_lines[$nline]); |
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447 my $pline = str_trim($position_lines[$nline]); |
378
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448 |
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449 my @fmatches = ($dline =~ /\s*([\+\-]?\d+\.\d*|NaN)\s*/ig); |
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450 if (scalar(@fmatches) != scalar(@fmitems)) |
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451 { |
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452 print STDERR "Not enough items in scalar line #".$nline." (". |
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453 scalar(@fmatches). " vs ".scalar(@fmitems)."): ".$dline."\n"; |
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454 } |
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455 else |
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456 { |
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457 my $vtmp = {}; |
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458 for (my $fni = 0; $fni < scalar(@fmitems); $fni++) |
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459 { |
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460 $$vtmp{$fmitems[$fni]} = $fmatches[$fni] if (lc($fmatches[$fni]) ne "nan"); |
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461 } |
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462 if ($pline =~ /^\s*([\+\-]?\d+\.\d*)\s+([\+\-]?\d+\.\d*)\s+(\d+)\s*$/) |
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463 { |
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464 $$vtmp{"lat"} = $1; |
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465 $$vtmp{"long"} = $2; |
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466 $$vtmp{"time"} = $3; |
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467 push(@farray, $vtmp); |
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468 } |
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469 else |
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470 { |
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471 print STDERR "Data mismatch #".$nline.": ".$pline."\n"; |
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472 } |
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473 } |
208
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474 } |
169
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475 } |
378
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476 else |
169
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477 { |
384 | 478 print STDERR "Position and data line counts do not match.\n"; |
378
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479 goto skip_it; |
189 | 480 } |
208
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481 # XXX Hashify the array into lat/long keys |
339 | 482 |
208
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483 # This is horrible :S |
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484 my $fcrap = $fdata->{"om:featureOfInterest"}{"sams:SF_SpatialSamplingFeature"}{"sams:shape"}{"gml:MultiPoint"}{"gml:pointMember"}; |
352
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485 my $nrecords = 0; |
228 | 486 foreach my $xnode (@{$fcrap}) |
189 | 487 { |
228 | 488 my $floc = $xnode->{"gml:Point"}; |
208
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489 if ($floc->{"gml:pos"} =~ /^\s*([\+\-]?\d+\.\d*)\s+([\+\-]?\d+\.\d*)\s*$/) |
189 | 490 { |
208
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491 my ($flat, $flong) = ($1, $2); |
349
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492 |
208
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|
493 # Should use a hash - |
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|
494 foreach my $flol (@farray) |
189 | 495 { |
383
1ba1191da15d
fetch_weather: Check for empty station name.
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|
496 if ($flol->{"lat"} == $flat && $flol->{"long"} == $flong && |
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497 $floc->{"gml:name"} ne "") |
208
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498 { |
349
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|
499 $nrecords++; |
208
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500 $weatherdata->{$floc->{"gml:name"}} = |
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501 [ |
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502 1, |
228 | 503 plonk_data($flol->{"time"}), |
237 | 504 plonk_data($flol->{"temperature"}), |
238
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505 |
228 | 506 plonk_data($flol->{"humidity"}), |
237 | 507 plonk_data($flol->{"windspeedms"}), |
244 | 508 translate_clouds(plonk_data($flol->{"totalcloudcover"})), |
208
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|
509 ]; |
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510 } |
189 | 511 } |
512 } | |
169
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513 } |
352
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diff
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514 print STDERR $nrecords." records from FMI.\n" if (opt_get_int("debug") > 0); |
353 | 515 } |
516 else | |
517 { | |
208
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518 # defined |
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519 print STDERR "Invalid XML received:\n"; |
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520 print STDERR $res->decoded_content."\n\n"; |
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521 } |
353 | 522 } |
523 else | |
524 { | |
208
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525 print STDERR "Error fetching FMI XML: ".$res->status_line."\n"; |
164
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526 } |
158
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Initial import of weather data fetching backend, written in Perl.
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|
527 } |
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|
528 |
164
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529 |
375
c303ddc0a683
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530 ### Skip here if the FMI shit fails due to broken data |
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531 skip_it: |
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532 |
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533 |
178
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|
534 ### |
394
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|
535 ### Purge too old entries |
371
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|
536 ### |
394
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diff
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|
537 if (opt_chk_valid("purge_threshold", 1)) |
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|
538 { |
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|
539 my $purge = opt_get_int("purge_threshold"); |
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|
540 if ($purge > 0) |
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|
541 { |
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|
542 my $wqtime = time(); |
395
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fetch_weather: Make purge_threshold output some information when debugging.
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394
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|
543 my $nold = scalar(keys %$weatherdata); |
373
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371
diff
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|
544 |
394
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|
545 foreach my $key (keys %$weatherdata) |
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|
546 { |
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|
547 if ($wqtime - $weatherdata->{$key}[1] > (60 * $purge)) |
315f31e4f964
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|
548 { |
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|
549 delete $$weatherdata{$key}; |
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550 } |
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551 } |
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552 |
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553 my $nnew = scalar(keys %$weatherdata); |
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554 print STDERR "Purged data older than ".$purge." minutes, ".$nold." -> ".$nnew." = ".($nold - $nnew)." removed.\n" if (opt_get_int("debug") > 0); |
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555 } |
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556 } |
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557 |
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558 |
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559 ### |
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560 ### Output |
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561 ### |
353 | 562 if (opt_chk_valid("outfile", 1)) |
563 { | |
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564 print STDERR "Dumping data to output file '".opt_get("outfile")."'\n" if (opt_get_int("debug") > 0); |
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565 close(STDOUT); |
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566 open(STDOUT, '>', opt_get("outfile")) or die("Could not open output file '".opt_get("outfile")."': $!\n"); |
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567 } |
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568 |
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569 binmode STDOUT, ':encoding(utf-8)'; |
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570 |
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571 foreach my $key (sort { $a cmp $b } keys %$weatherdata) |
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572 { |
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573 print STDOUT $key."|".join("|", @{$weatherdata->{$key}})."\n"; |
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574 } |
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575 |
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576 close(STDOUT); |