Mercurial > hg > egg-tcls
annotate fetch_weather.pl @ 410:5c97006c89e6
fetch_weather: Cleanups.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Sat, 07 Jan 2017 17:56:11 +0200 |
parents | b05da2077e44 |
children | fe47617e7251 |
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381 | 1 #!/usr/bin/perl -w |
182 | 2 ########################################################################## |
3 # | |
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4 # Fetch Weather v0.8 by Matti 'ccr' Hamalainen <ccr@tnsp.org> |
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5 # (C) Copyright 2014-2017 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 # |
186
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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 5.018; |
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19 use strict; |
380
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20 use warnings; |
243 | 21 use utf8; |
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22 use LWP::UserAgent; |
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23 use HTTP::Message; |
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24 use HTML::Entities; |
399
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25 use Compress::Zlib; |
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26 use XML::Simple; |
189 | 27 use Date::Format; |
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28 use Date::Parse; |
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29 use Data::Dumper; |
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30 use File::Slurper qw(read_text write_text); |
403
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31 use Text::CSV; |
166 | 32 |
400 | 33 |
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34 ### |
182 | 35 ### Configuration settings |
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36 ### |
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37 my %settings = ( |
166 | 38 "debug" => 0, |
164
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39 "opt_fmi" => 0, |
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40 "opt_tiehallinto" => 0, |
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41 "purge_threshold" => 60, |
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42 "fmi_api_key" => "", |
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43 "outfile" => "", |
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44 "tiehallinto_static_meta" => "tiehallinto.meta", |
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45 "http_user_agent" => "Mozilla/4.0 (compatible; MSIE 6.0; MSIE 5.5; Windows NT 6.0) Opera 10.63 [en]", |
164
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46 ); |
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47 |
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48 |
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49 ### |
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50 ### Helper functions |
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51 ### |
164
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52 sub mlog($) |
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53 { |
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54 print STDERR $_[0]; |
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55 } |
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56 |
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57 |
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58 sub fetch_http($) |
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59 { |
198 | 60 my $agent = LWP::UserAgent->new; |
61 $agent->agent($settings{"http_user_agent"}); | |
208
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62 $agent->timeout(20); |
178
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63 |
198 | 64 my $req = HTTP::Request->new(GET => $_[0]); |
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65 $req->header('Accept-Encoding' => scalar HTTP::Message::decodable()); |
339 | 66 |
406
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67 my $res = $agent->request($req); |
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68 return $res; |
178
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69 } |
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70 |
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71 |
382
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72 sub str_trim($) |
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73 { |
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74 my $tmp = $_[0]; |
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75 $tmp =~ s/^\s*//; |
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76 $tmp =~ s/\s*$//; |
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77 return $tmp; |
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78 } |
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79 |
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80 |
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81 sub parse_timestamp($$) |
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82 { |
196
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83 my ($str, $offs) = @_; |
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84 if ($str =~ /^(\d+):(\d+)$/) |
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85 { |
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86 return $offs + (60 * 60 * $1) + ($2 * 60); |
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87 } |
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88 else |
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89 { |
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90 return $offs; |
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91 } |
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92 } |
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93 |
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94 |
194 | 95 sub format_time_gmt($) |
189 | 96 { |
97 # 2012-02-27T00:00:00Z | |
199
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98 return time2str("%Y-%m-%dT%TZ", $_[0], "UTC"); |
189 | 99 } |
100 | |
193 | 101 |
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102 my %th_rain_states = |
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103 ( |
237 | 104 "Pouta" => "poutaa", |
105 "Heikko" => "heikkoa sadetta", | |
106 "Kohtalainen" => "kohtalaista sadetta", | |
107 "Voimakas" => "voimakasta sadetta", | |
212
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108 ); |
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109 |
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110 my $th_rain_states_k = join("|", map {quotemeta} sort { length($b)<=>length($a) } keys %th_rain_states); |
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111 |
242 | 112 sub translate_rain($) |
212
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113 { |
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114 my $tmp = $_[0]; |
237 | 115 $tmp =~ s/($th_rain_states_k)/$th_rain_states{$1}/igo; |
212
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116 return $tmp; |
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117 } |
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118 |
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119 |
244 | 120 my %th_cloud_states = |
121 ( | |
122 0 => "selkeää", | |
247
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123 1 => "melkein selkeää", |
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124 2 => "verrattain selkeää", |
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125 3 => "verrattain selkeää", |
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126 4 => "puolipilvistä", |
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127 5 => "verrattain pilvistä", |
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128 6 => "verrattain pilvistä", |
244 | 129 7 => "melkein pilvistä", |
130 8 => "pilvistä", | |
131 ); | |
132 | |
133 sub translate_clouds($) | |
134 { | |
247
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135 return "" if ($_[0] eq "NaN" || $_[0] eq ""); |
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136 my $tmp = int($_[0]); |
244 | 137 foreach my $n (sort { $a <=> $b } keys %th_cloud_states) |
138 { | |
247
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139 return $th_cloud_states{$n}." (".$n."/8)" if ($tmp == $n); |
244 | 140 } |
141 return $tmp; | |
142 } | |
143 | |
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144 |
410 | 145 ### Return either data or if not defined, empty string |
228 | 146 sub plonk_data($) |
147 { | |
148 return defined($_[0]) ? $_[0] : ""; | |
149 } | |
150 | |
151 | |
410 | 152 ### Same as plonk_data() but also lowercase the data string |
237 | 153 sub plonk_data_lc($) |
154 { | |
155 return defined($_[0]) ? lc($_[0]) : ""; | |
156 } | |
157 | |
158 | |
158
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159 ### |
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160 ### Configuration handling |
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161 ### |
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162 sub opt_chk_bool($) |
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163 { |
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164 if (defined($settings{$_[0]})) |
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165 { |
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166 my $val = $settings{$_[0]}; |
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167 return ($val == 1 || $val eq "true" || $val eq "on" || $val eq "1"); |
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168 } |
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169 else |
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170 { |
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171 return 0; |
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172 } |
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173 } |
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174 |
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175 |
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176 sub opt_chk_valid($$) |
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177 { |
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178 if (defined($settings{$_[0]})) |
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179 { |
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180 my $val = $settings{$_[0]}; |
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181 return length($val) >= $_[1]; |
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182 } |
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183 else |
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184 { |
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185 return 0; |
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186 } |
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187 } |
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188 |
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189 |
324
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190 sub opt_get_int($) |
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191 { |
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192 if (defined($settings{$_[0]})) |
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193 { |
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194 return int($settings{$_[0]}); |
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195 } |
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196 else |
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197 { |
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198 return -1; |
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199 } |
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200 } |
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201 |
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202 |
164
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203 sub opt_get($) |
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204 { |
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205 if (defined($settings{$_[0]})) |
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206 { |
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207 return $settings{$_[0]}; |
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208 } |
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209 else |
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210 { |
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211 return undef; |
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212 } |
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213 } |
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214 |
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215 |
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216 sub opt_read_config($) |
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217 { |
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218 my $filename = $_[0]; |
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219 my $errors = 0; |
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220 my $line = 0; |
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221 |
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222 open(CONFFILE, "<", $filename) or die("Could not open configuration '".$filename."'!\n"); |
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223 while (<CONFFILE>) |
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224 { |
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225 $line++; |
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226 chomp; |
353 | 227 if (/(^\s*#|^\s*$)/) |
228 { | |
164
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229 # Ignore comments and empty lines |
353 | 230 } |
386 | 231 elsif (/^\s*\"?([a-zA-Z0-9_]+)\"?\s*=>?\s*(\d+),?\s*$/) |
232 { | |
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233 my $key = lc($1); |
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234 my $value = $2; |
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235 if (defined($settings{$key})) { |
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236 $settings{$key} = $value; |
353 | 237 } |
238 else | |
239 { | |
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240 mlog("[$filename:$line] Unknown setting '$key' = $value\n"); |
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241 $errors = 1; |
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242 } |
353 | 243 } |
386 | 244 elsif (/^\s*\"?([a-zA-Z0-9_]+)\"?\s*=>?\s*\"(.*?)\",?\s*$/) |
245 { | |
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246 my $key = lc($1); |
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247 my $value = $2; |
353 | 248 if (defined($settings{$key})) |
249 { | |
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250 $settings{$key} = $value; |
353 | 251 } |
252 else | |
253 { | |
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254 mlog("[$filename:$line] Unknown setting '$key' = '$value'\n"); |
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255 $errors = 1; |
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256 } |
353 | 257 } |
258 else | |
259 { | |
164
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260 mlog("[$filename:$line] Syntax error: $_\n"); |
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261 $errors = 1; |
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262 } |
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263 } |
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264 close(CONFFILE); |
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265 return $errors; |
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266 } |
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267 |
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268 |
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269 ### |
158
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270 ### Main program begins |
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271 ### |
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272 my $weatherdata = {}; |
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273 |
164
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274 die( |
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275 "Weather Fetch v0.8 by ccr/TNSP <ccr\@tnsp.org>\n". |
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276 "Usage: $0 <config file> [force]\n" |
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277 ) unless scalar(@ARGV) >= 1; |
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278 |
178
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279 my $cfgfile = shift; |
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280 opt_read_config($cfgfile) == 0 or die("Errors while parsing configuration file '".$cfgfile."'.\n"); |
405
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281 my $force_update = scalar(@ARGV) >= 1 && (shift eq "force"); |
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282 |
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283 |
178
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284 ### |
354
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285 ### Load already cached data |
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286 ### |
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287 if (opt_chk_valid("outfile", 1)) |
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288 { |
402
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289 my $str = read_text(opt_get("outfile")); |
354
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290 if (defined($str)) |
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291 { |
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292 foreach my $line (split(/\s*\n\s*/, $str)) |
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293 { |
367
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294 my @mtmp = split(/\|/, $line, -1); |
356
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295 if (scalar(\@mtmp) >= 3) |
354
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296 { |
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297 $weatherdata->{shift @mtmp} = \@mtmp; |
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298 } |
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299 } |
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300 print STDERR scalar(keys %$weatherdata)." old records reloaded.\n" if (opt_get_int("debug") > 0); |
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301 } |
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302 } |
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303 |
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304 |
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305 ### |
338
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306 ### Fetch Tiehallinto data |
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307 ### |
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308 if (opt_chk_bool("opt_tiehallinto")) |
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309 { |
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310 my $uri = "http://tie.digitraffic.fi/sujuvuus/ws/roadWeather"; |
406
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311 print STDERR "Fetching Tiehallinto road weather data from ".$uri."\n" if (opt_get_int("debug") > 0); |
338
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312 my $res = fetch_http($uri); |
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313 if ($res->code >= 200 && $res->code <= 201) |
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314 { |
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315 my $xml = XMLin($res->decoded_content); |
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316 |
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317 if (!defined($xml->{"soap:Body"}) || !defined($xml->{"soap:Body"}{"RoadWeatherResponse"})) |
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318 { |
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319 print STDERR "ERROR: SOAP call result did not contain required data.\n"; |
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320 print STDERR $res->decoded_content."\n\n"; |
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321 } |
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322 else |
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323 { |
406
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324 # Parse the XML |
338
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325 my $data = $xml->{"soap:Body"}{"RoadWeatherResponse"}; |
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326 |
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327 # Check if we need to update the static meta data |
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328 my $meta_file = opt_get("tiehallinto_static_meta"); |
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329 my $fetch_meta = (-e $meta_file) ? 0 : 1; |
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330 |
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331 if (defined($data->{"laststaticdataupdate"})) |
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332 { |
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333 # Compare metadata cache file modification timestamp to info in XML |
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334 my $tmp1 = str2time($data->{"laststaticdataupdate"}); |
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335 my $tmp2 = (-e $meta_file) ? (stat($meta_file))[9] : -1; |
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336 $fetch_meta = 1 unless ($tmp1 < $tmp2); |
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337 } |
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338 |
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339 # Fetch or read the cache |
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340 my $meta_str; |
404
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341 if ($fetch_meta || $force_update) |
338
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342 { |
377
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343 my $uri = "https://raw.githubusercontent.com/finnishtransportagency/metadata/master/csv/meta_rws_stations.csv"; |
406
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344 print STDERR "Fetching Tiehallinto static meta data from $uri\n" if (opt_get_int("debug") > 1); |
338
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345 my $res = fetch_http($uri); |
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346 die("Failed to fetch $uri data.\n") unless ($res->code <= 200 && $res->code <= 201); |
339 | 347 |
338
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348 print STDERR "Storing to cache '$meta_file'.\n" if (opt_get_int("debug") > 0); |
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349 $meta_str = $res->decoded_content; |
402
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350 write_text($meta_file, $meta_str, "utf8"); |
338
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351 } |
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352 else |
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353 { |
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354 print STDERR "Using CACHED Tiehallinto static meta data from '$meta_file'.\n" if (opt_get_int("debug") > 0); |
406
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355 $meta_str = read_text($meta_file, "utf-8"); |
338
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356 } |
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357 |
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358 # Parse the data .. |
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359 my $meta_data = {}; |
387
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360 # my $csv = Text::CSV->new({blank_is_undef => 1, decode_utf8 => 1, sep_char => ";"}); |
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361 my $csv = Text::CSV->new({blank_is_undef => 1, sep_char => ";"}); |
343
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362 die("Failed to instantiate Text::CSV object?\n") unless defined($csv); |
398 | 363 |
338
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364 foreach my $line (split(/\s*\n\s*/, $meta_str)) |
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365 { |
343
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366 if (defined($line) && $csv->parse($line)) |
338
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367 { |
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368 my @fields = $csv->fields(); |
363
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369 if (scalar(@fields) > 1) |
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370 { |
377
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371 $$meta_data{$fields[0]} = \@fields; |
363
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372 } |
338
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373 } |
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374 } |
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375 |
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376 # Parse XML and combine with the station meta data |
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377 if (defined($data->{"roadweatherdata"})) |
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378 { |
349
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379 my $nrecords = 0; |
338
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380 foreach my $wdata (@{$data->{"roadweatherdata"}{"roadweather"}}) |
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381 { |
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382 my $wid = $wdata->{"stationid"}; |
392
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|
383 if (defined($meta_data->{$wid}) && defined($meta_data->{$wid}[2]) && $meta_data->{$wid}[2] ne "") |
338
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384 { |
349
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385 $nrecords++; |
379
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|
386 $weatherdata->{$meta_data->{$wid}[2]} = |
338
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387 [ |
343
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388 1, |
338
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389 str2time(plonk_data($wdata->{"measurementtime"}{"utc"})), |
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390 plonk_data($wdata->{"airtemperature1"}), |
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391 |
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392 plonk_data($wdata->{"humidity"}), |
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393 plonk_data($wdata->{"averagewindspeed"}), |
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394 ]; |
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395 } |
377
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396 else |
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397 { |
397
799320c3386e
Change "Station ID #" not defined?" to a debug message.
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diff
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|
398 print STDERR "Station ID #".$wid." not defined?\n" if (opt_get_int("debug") > 0); |
400 | 399 #.Dumper($meta_data->{$wid}); |
377
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400 } |
338
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401 } |
349
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402 print STDERR $nrecords." records from Tiehallinto.\n" if (opt_get_int("debug") > 0); |
338
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403 } |
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404 else |
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405 { |
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406 print STDERR "ERROR: Invalid (or unsupported) road weather data blob.\n"; |
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407 print STDERR $res->decoded_content."\n\n"; |
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408 } |
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409 } |
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410 } |
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411 } |
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412 |
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413 |
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414 ### |
158
db2b1f74d994
Initial import of weather data fetching backend, written in Perl.
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|
415 ### Fetch FMI data |
178
9b8ec700ede4
Clean up the weather data parser backend a bit.
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diff
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|
416 ### |
164
d5a0e4248f3e
weather: Implement configuration file support for weather fetcher backend.
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417 if (opt_chk_bool("opt_fmi")) |
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418 { |
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419 die("FMI data scrape enabled, but no API key set.\n") unless opt_chk_valid("fmi_api_key", 10); |
238
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420 my @fmitems = ("temperature", "humidity", "windspeedms", "totalcloudcover"); |
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421 |
189 | 422 my $uri = "http://data.fmi.fi/fmi-apikey/".opt_get("fmi_api_key"). |
423 "/wfs?request=getFeature&storedquery_id=fmi::observations::weather::". | |
424 "multipointcoverage". | |
425 # "timevaluepair". | |
194 | 426 "&starttime=".format_time_gmt(time() - 10*60)."&endtime=".format_time_gmt(time()). |
238
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427 "¶meters=".join(",", @fmitems)."&maxlocations=100&bbox=19,59,32,75"; |
164
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428 |
324
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429 print STDERR "FMI URI: ".$uri."\n" if (opt_get_int("debug") > 0); |
189 | 430 |
431 my $res = fetch_http($uri); | |
164
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432 if ($res->code >= 200 && $res->code <= 201) |
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433 { |
170
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434 my $xml = XMLin($res->decoded_content); |
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435 my $time_base = time(); |
339 | 436 |
208
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437 if (defined($xml->{"wfs:member"}{"omso:GridSeriesObservation"})) |
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438 { |
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439 my $fdata = $xml->{"wfs:member"}{"omso:GridSeriesObservation"}; |
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440 my $fshit = $fdata->{"om:result"}{"gmlcov:MultiPointCoverage"}; |
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441 |
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442 my @position_lines = split(/\n/, $fshit->{"gml:domainSet"}{"gmlcov:SimpleMultiPoint"}{"gmlcov:positions"}); |
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443 my @data_lines = split(/\n/, $fshit->{"gml:rangeSet"}{"gml:DataBlock"}{"gml:doubleOrNilReasonTupleList"}); |
208
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444 my @farray = (); |
169
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445 |
378
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446 if (scalar(@position_lines) == scalar(@data_lines)) |
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447 { |
378
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448 for (my $nline = 0; $nline < scalar(@position_lines); $nline++) |
208
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449 { |
382
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450 my $dline = str_trim($data_lines[$nline]); |
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451 my $pline = str_trim($position_lines[$nline]); |
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452 |
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453 my @fmatches = ($dline =~ /\s*([\+\-]?\d+\.\d*|NaN)\s*/ig); |
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454 if (scalar(@fmatches) != scalar(@fmitems)) |
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455 { |
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456 print STDERR "Not enough items in scalar line #".$nline." (". |
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457 scalar(@fmatches). " vs ".scalar(@fmitems)."): ".$dline."\n"; |
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458 } |
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459 else |
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460 { |
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461 my $vtmp = {}; |
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462 for (my $fni = 0; $fni < scalar(@fmitems); $fni++) |
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463 { |
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464 $$vtmp{$fmitems[$fni]} = $fmatches[$fni] if (lc($fmatches[$fni]) ne "nan"); |
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465 } |
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466 if ($pline =~ /^\s*([\+\-]?\d+\.\d*)\s+([\+\-]?\d+\.\d*)\s+(\d+)\s*$/) |
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467 { |
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468 $$vtmp{"lat"} = $1; |
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469 $$vtmp{"long"} = $2; |
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470 $$vtmp{"time"} = $3; |
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471 push(@farray, $vtmp); |
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472 } |
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473 else |
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474 { |
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475 print STDERR "Data mismatch #".$nline.": ".$pline."\n"; |
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476 } |
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477 } |
208
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478 } |
169
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479 } |
378
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480 else |
169
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481 { |
384 | 482 print STDERR "Position and data line counts do not match.\n"; |
378
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483 goto skip_it; |
189 | 484 } |
208
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485 # XXX Hashify the array into lat/long keys |
339 | 486 |
208
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487 # This is horrible :S |
352
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488 my $nrecords = 0; |
410 | 489 foreach my $xnode (@{$fdata->{"om:featureOfInterest"}{"sams:SF_SpatialSamplingFeature"}{"sams:shape"}{"gml:MultiPoint"}{"gml:pointMember"}}) |
189 | 490 { |
228 | 491 my $floc = $xnode->{"gml:Point"}; |
208
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492 if ($floc->{"gml:pos"} =~ /^\s*([\+\-]?\d+\.\d*)\s+([\+\-]?\d+\.\d*)\s*$/) |
189 | 493 { |
208
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494 my ($flat, $flong) = ($1, $2); |
349
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|
495 |
208
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496 # Should use a hash - |
410 | 497 foreach my $frec (@farray) |
189 | 498 { |
410 | 499 if ($frec->{"lat"} == $flat && $frec->{"long"} == $flong && |
383
1ba1191da15d
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|
500 $floc->{"gml:name"} ne "") |
208
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501 { |
349
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502 $nrecords++; |
208
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503 $weatherdata->{$floc->{"gml:name"}} = |
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504 [ |
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505 1, |
410 | 506 |
507 plonk_data($frec->{"time"}), | |
508 plonk_data($frec->{"temperature"}), | |
238
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509 |
410 | 510 plonk_data($frec->{"humidity"}), |
511 plonk_data($frec->{"windspeedms"}), | |
512 translate_clouds(plonk_data($frec->{"totalcloudcover"})), | |
208
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513 ]; |
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514 } |
189 | 515 } |
516 } | |
169
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517 } |
352
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518 print STDERR $nrecords." records from FMI.\n" if (opt_get_int("debug") > 0); |
353 | 519 } |
520 else | |
521 { | |
208
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522 # defined |
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523 print STDERR "Invalid XML received:\n"; |
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524 print STDERR $res->decoded_content."\n\n"; |
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525 } |
353 | 526 } |
527 else | |
528 { | |
208
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529 print STDERR "Error fetching FMI XML: ".$res->status_line."\n"; |
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530 } |
158
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|
531 } |
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532 |
164
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533 |
375
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534 ### Skip here if the FMI shit fails due to broken data |
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535 skip_it: |
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536 |
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537 |
178
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|
538 ### |
394
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|
539 ### Purge too old entries |
371
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|
540 ### |
394
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|
541 if (opt_chk_valid("purge_threshold", 1)) |
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542 { |
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543 my $purge = opt_get_int("purge_threshold"); |
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544 if ($purge > 0) |
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545 { |
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|
546 my $wqtime = time(); |
395
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diff
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|
547 my $nold = scalar(keys %$weatherdata); |
373
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548 |
394
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|
549 foreach my $key (keys %$weatherdata) |
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550 { |
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|
551 if ($wqtime - $weatherdata->{$key}[1] > (60 * $purge)) |
315f31e4f964
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552 { |
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|
553 delete $$weatherdata{$key}; |
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554 } |
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555 } |
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556 |
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557 my $nnew = scalar(keys %$weatherdata); |
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558 print STDERR "Purged data older than ".$purge." minutes, ".$nold." -> ".$nnew." = ".($nold - $nnew)." removed.\n" if (opt_get_int("debug") > 0); |
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559 } |
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560 } |
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561 |
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562 |
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563 ### |
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564 ### Output |
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565 ### |
353 | 566 if (opt_chk_valid("outfile", 1)) |
567 { | |
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568 print STDERR "Dumping data to output file '".opt_get("outfile")."'\n" if (opt_get_int("debug") > 0); |
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569 close(STDOUT); |
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570 open(STDOUT, '>', opt_get("outfile")) or die("Could not open output file '".opt_get("outfile")."': $!\n"); |
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571 } |
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572 |
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573 binmode STDOUT, ':encoding(utf-8)'; |
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574 |
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575 foreach my $key (sort { $a cmp $b } keys %$weatherdata) |
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576 { |
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577 print STDOUT $key."|".join("|", @{$weatherdata->{$key}})."\n"; |
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578 } |
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579 |
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580 close(STDOUT); |