246 lines
13 KiB
HTML
246 lines
13 KiB
HTML
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<h1><a name="template_helper_functions" id="template_helper_functions">Template Helper Functions</a></h1>
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<div class="level1">
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<p>
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Helper-Funktionen sind dazu gedacht, die Templates zu vereinfachen und Fehler abzufangen.
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</p>
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</div>
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<!-- SECTION "Template Helper Functions" [1-132] -->
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<h2><a name="rrddef" id="rrddef">rrd::def</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::def</strong> ( $vname, $rrdfile, $ds, [ $cf='AVERAGE' ] )
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</p>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">=</span> rrd<span class="sy0">::</span><span class="me2">def</span><span class="br0">(</span><span class="st_h">'var1'</span><span class="sy0">,</span> <span class="re0">$RRDFILE</span><span class="br0">[</span>0<span class="br0">]</span><span class="sy0">,</span> <span class="re0">$DS</span><span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span><span class="sy0">,</span> <span class="st_h">'MAX'</span><span class="br0">)</span><span class="sy0">;</span></pre>
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<p>
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<a href="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_data.en.html" class="urlextern" title="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_data.en.html" rel="nofollow">http://oss.oetiker.ch/rrdtool/doc/rrdgraph_data.en.html</a>
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</p>
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</div>
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<!-- SECTION "rrd::def" [133-351] -->
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<h2><a name="rrdcdef" id="rrdcdef">rrd::cdef</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::cdef</strong> ( $vname, $rpn, )
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</p>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">=</span> rrd<span class="sy0">::</span><span class="me2">cdef</span><span class="br0">(</span><span class="st_h">'var1_bits'</span><span class="sy0">,</span> <span class="st_h">'var1,8,*'</span> <span class="br0">)</span><span class="sy0">;</span></pre>
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<p>
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<a href="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_data.en.html" class="urlextern" title="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_data.en.html" rel="nofollow">http://oss.oetiker.ch/rrdtool/doc/rrdgraph_data.en.html</a>
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</p>
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</div>
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<!-- SECTION "rrd::cdef" [352-536] -->
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<h2><a name="rrdvdef" id="rrdvdef">rrd::vdef</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::vdef</strong> ( $vname, $rpn, )
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</p>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">=</span> rrd<span class="sy0">::</span><span class="me2">vdef</span><span class="br0">(</span><span class="st_h">'var1_avg'</span><span class="sy0">,</span> <span class="st_h">'var1,AVERAGE'</span> <span class="br0">)</span><span class="sy0">;</span></pre>
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<p>
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<a href="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_data.en.html" class="urlextern" title="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_data.en.html" rel="nofollow">http://oss.oetiker.ch/rrdtool/doc/rrdgraph_data.en.html</a>
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</p>
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</div>
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<!-- SECTION "rrd::vdef" [537-724] -->
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<h2><a name="rrdline_1-3" id="rrdline_1-3">rrd::line[1-3]</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::line[1-3]</strong> ( $vname, $color, [ $text ], [ $stack ] )
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</p>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">.=</span> rrd<span class="sy0">::</span><span class="me2">line1</span><span class="br0">(</span><span class="st_h">'var1'</span><span class="sy0">,</span> <span class="co2">#ff00ff );</span></pre>
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<p>
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Eine einfache Linie, ein Pixel breit, ohne Label-Text
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</p>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">.=</span> rrd<span class="sy0">::</span><span class="me2">line3</span><span class="br0">(</span><span class="st_h">'var1'</span><span class="sy0">,</span> <span class="st_h">'#ff00ff'</span><span class="sy0">,</span> <span class="st_h">'Load'</span> <span class="br0">)</span><span class="sy0">;</span></pre>
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<p>
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Eine Linie, drei Pixel breit, und dem Label “Load”
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</p>
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<p>
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<a href="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html" class="urlextern" title="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html" rel="nofollow">http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html</a>
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</p>
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</div>
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<!-- SECTION "rrd::line[1-3]" [725-1114] -->
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<h2><a name="rrdarea" id="rrdarea">rrd::area</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::area</strong> ( $vname, $color, [ $text ], [ $stack ] )
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</p>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">.=</span> rrd<span class="sy0">::</span><span class="me2">area</span><span class="br0">(</span><span class="st_h">'var1'</span><span class="sy0">,</span> <span class="st_h">'#ff00ff'</span><span class="sy0">,</span> <span class="st_h">'Load'</span> <span class="br0">)</span><span class="sy0">;</span></pre>
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<p>
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Eine Fläche mit dem Label “Load”
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</p>
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<p>
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<a href="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html" class="urlextern" title="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html" rel="nofollow">http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html</a>
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</p>
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</div>
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<!-- SECTION "rrd::area" [1115-1362] -->
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<h2><a name="rrdgprint" id="rrdgprint">rrd::gprint</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::gprint</strong> ( $vname, $cf, [ $text ] )
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</p>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">.=</span> rrd<span class="sy0">::</span><span class="me2">gprint</span><span class="br0">(</span><span class="st_h">'var1'</span><span class="sy0">,</span> <span class="st_h">'MAX'</span><span class="sy0">,</span> <span class="st_h">'%4.2lf %s Max'</span> <span class="br0">)</span><span class="sy0">;</span></pre>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">.=</span> rrd<span class="sy0">::</span><span class="me2">gprint</span><span class="br0">(</span><span class="st_h">'var1'</span><span class="sy0">,</span> <a href="http://www.php.net/array"><span class="kw3">array</span></a><span class="br0">(</span><span class="st_h">'MIN'</span><span class="sy0">,</span> <span class="st_h">'MAX'</span><span class="sy0">,</span> <span class="st_h">'AVERAGE'</span><span class="br0">)</span><span class="sy0">,</span> <span class="st_h">'%4.2lf %s'</span> <span class="br0">)</span><span class="sy0">;</span></pre>
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<p>
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Ist $cf ein Array, so wird automatisch eine Legende formatiert ausgegeben.
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</p>
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<p>
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<a href="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html" class="urlextern" title="http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html" rel="nofollow">http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html</a>
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</p>
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</div>
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<!-- SECTION "rrd::gprint" [1363-1743] -->
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<h2><a name="rrdcolor" id="rrdcolor">rrd::color</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::color</strong> ( $num [, $num ])
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</p>
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<p>
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Liefert eine Farbe aus der <acronym title="HyperText Markup Language">HTML</acronym>-Farbtabelle. Als zweites (optionales) Argument kann man einen Alpha-Wert angeben, der die Transparenz der Farbe festlegt.
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</p>
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<p>
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Beginnend mit PNP 0.6.18 akzeptiert die Funktion ein drittes Argument, das auf Farbschemadefinitionen in <code>config.php</code> verweist (oder in <code>config_local.php</code>, die bei Updates nicht überschrieben wird). Dort finden Sie das Array $scheme[], z.B.
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</p>
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<pre class="code">$scheme['Reds'] = array (...)</pre>
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<p>
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Im Template definieren Sie
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</p>
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<pre class="code">$schema = $this->config->scheme['Reds']
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...
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rrd:color ($key, '', $schema);</pre>
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<p>
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Aus diese Weise wählen Sie den Wert von $scheme['Reds'][$key]. Falls $key nicht innerhalb des Arrays liegt oder der Name nicht korrekt ist (<strong>case-sensitiv</strong>), dann wird die Standardpalette verwendet.
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</p>
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</div>
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<!-- SECTION "rrd::color" [1744-2569] -->
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<h2><a name="rrdgradient" id="rrdgradient">rrd::gradient</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::gradient</strong> ( $vname, [$start_color], [$end_color], [$label], [$steps], [$lower] )
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</p>
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<p>
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Erzeugt einen Farbverlauf von $start_color nach $end_color
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</p>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">.=</span> rrd<span class="sy0">::</span><span class="me2">gradient</span><span class="br0">(</span><span class="st_h">'var1'</span><span class="sy0">,</span> <span class="st_h">'#ff0000'</span><span class="sy0">,</span> <span class="st_h">'#ffff00'</span> <span class="br0">)</span><span class="sy0">;</span></pre>
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<p>
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<a href="/templates/gradient" class="wikilink1" title="templates:gradient">Beispiel</a>
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</p>
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</div>
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<!-- SECTION "rrd::gradient" [2570-2860] -->
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<h2><a name="rrdcut" id="rrdcut">rrd::cut</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::cut</strong> ( $text, $length )
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</p>
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<pre class="code php"><span class="re0">$label</span> <span class="sy0">=</span> rrd<span class="sy0">::</span><span class="me2">cut</span><span class="br0">(</span><span class="re0">$LABEL</span><span class="br0">[</span>0<span class="br0">]</span><span class="sy0">,</span> 18<span class="br0">)</span><span class="sy0">;</span></pre>
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<p>
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Schneidet einen Text auf eine gegebene Länge $length ab oder füllt wenn nötig auf $length auf.
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Diese Funktion ist hilfreich, wenn die Legende ausgerichtet werden soll, aber die Länge des Labels nicht bekannt ist.
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</p>
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</div>
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<!-- SECTION "rrd::cut" [2861-3195] -->
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<h2><a name="rrdticker" id="rrdticker">rrd::ticker</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::ticker</strong> ( $vname, $warning, $critical, [$fraction], [$opacity], [$color_OK], [$color_WARN], [$color_CRIT] )
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</p>
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<p>
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Erzeugt einen farbigen Balken am oberen Rand des Graphen, der je nach OK, WARNING & CRITICAL unterschiedliche Farben annimmt
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</p>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">.=</span> rrd<span class="sy0">::</span><span class="me2">ticker</span><span class="br0">(</span> <span class="st0">"var1"</span><span class="sy0">,</span> <span class="re0">$WARN</span><span class="br0">[</span>0<span class="br0">]</span><span class="sy0">,</span> <span class="re0">$CRIT</span><span class="br0">[</span>0<span class="br0">]</span> <span class="br0">)</span><span class="sy0">;</span></pre>
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<p>
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<a href="/templates/ticker" class="wikilink1" title="templates:ticker">Beispiel</a>
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</p>
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</div>
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<!-- SECTION "rrd::ticker" [3196-3572] -->
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<h2><a name="rrdalerter" id="rrdalerter">rrd::alerter</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::alerter</strong> ( $vname, $label, $warning, $critical, [$opacity], [$unit], [$color_OK], [$color_WARN], [$color_CRIT], [$line_col] )
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</p>
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<p>
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Erzeugt Areas, die entsprechend der Werte OK, WARNING & CRITICAL unterschiedliche Farben annehmen
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</p>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">.=</span> rrd<span class="sy0">::</span><span class="me2">alerter</span><span class="br0">(</span> <span class="st0">"var1"</span><span class="sy0">,</span> <span class="re0">$LABEL</span><span class="br0">[</span>0<span class="br0">]</span><span class="sy0">,</span> <span class="re0">$WARN</span><span class="br0">[</span>0<span class="br0">]</span><span class="sy0">,</span> <span class="re0">$CRIT</span><span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span><span class="sy0">,</span> <span class="st0">"FF"</span><span class="sy0">,</span> <span class="re0">$UNIT</span><span class="br0">[</span>0<span class="br0">]</span> <span class="br0">)</span><span class="sy0">;</span></pre>
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<p>
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<a href="/templates/alerter" class="wikilink1" title="templates:alerter">Beispiel</a>
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</p>
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</div>
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<!-- SECTION "rrd::alerter" [3573-3970] -->
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<h2><a name="rrdalerter_gr" id="rrdalerter_gr">rrd::alerter_gr</a></h2>
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<div class="level2">
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<p>
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string <strong>rrd::alerter_gr</strong> ( $vname, $label, $warning, $critical, [$opacity], [$unit], [$color_OK], [$color_WARN], [$color_CRIT], [$line_col], [$start_color] )
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</p>
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<p>
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Erzeugt Gradienten, die entsprechend der Werte OK, WARNING & CRITICAL unterschiedliche Farben annehmen
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</p>
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<pre class="code php"><span class="re0">$def</span> <span class="sy0">.=</span> rrd<span class="sy0">::</span><span class="me2">alerter_gr</span><span class="br0">(</span> <span class="st0">"var1"</span><span class="sy0">,</span> <span class="re0">$LABEL</span><span class="br0">[</span>0<span class="br0">]</span><span class="sy0">,</span> <span class="re0">$WARN</span><span class="br0">[</span>0<span class="br0">]</span><span class="sy0">,</span> <span class="re0">$CRIT</span><span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span><span class="sy0">,</span> <span class="st0">"FF"</span><span class="sy0">,</span> <span class="re0">$UNIT</span><span class="br0">[</span>0<span class="br0">]</span> <span class="br0">)</span><span class="sy0">;</span></pre>
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<p>
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<a href="/templates/alerter_gr" class="wikilink1" title="templates:alerter_gr">Beispiel</a>
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</p>
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</div>
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<!-- SECTION "rrd::alerter_gr" [3971-] -->
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