/**
* Tests mapAsString function
*/
public function testMapAsString()
{
$emptyMap = [];
$this->assertEquals('', Helper::mapAsString($emptyMap));
$mapNormal = ['name1' => 'value1', 'name2' => 'value2'];
$expected1 = 'name1.value1.name2.value2';
$expected2 = 'name1:value1:name2:value2';
$this->assertEquals($expected1, Helper::mapAsString($mapNormal));
$this->assertEquals($expected2, Helper::mapAsString($mapNormal, true, ':'));
$mapSanitize = ['name1' => 'should.be.sanitized', 'name2' => 'S@n1TiZ3.M*.Hard'];
$expected3 = 'name1.should_be_sanitized.name2.S_n1TiZ3_M_Hard';
$expected4 = 'name1:should.be.sanitized:name2:S@n1TiZ3.M*.Hard';
$this->assertEquals($expected3, Helper::mapAsString($mapSanitize));
$this->assertEquals($expected4, Helper::mapAsString($mapSanitize, false, ':'));
}
/**
* Formats metric to stats daemon format
* @see https://github.com/etsy/statsd/blob/master/docs/metric_types.md
*
* @param Metric $metric
* @param string $daemonType
* @return bool|string
*/
protected function process(Metric &$metric, $daemonType)
{
// If no value, nothing to add
$value = $metric->getValue();
if (!isset($value['value'])) {
return false;
}
$value = $value['value'];
$name = $metric->getName();
// Add tags to the beginning of the name
if ($metric->hasTags()) {
$name = Helper::mapAsString($metric->getTags()) . '.' . $name;
}
// Name with value and type
$result = $name . ':' . $value . '|' . $daemonType;
// Add sampling rate
if ($metric instanceof SamplingMetricInterface) {
if ($metric->getSampleRate() < 1.0) {
$result .= '|@' . $metric->getSampleRate();
}
}
return $result;
}
/**
* Sets metric name.
* The name will be sanitized using `Helper::sanitize` function.
*
* @param string $name
* @return $this
*/
public function setName($name)
{
$this->name = Helper::sanitize($name);
return $this;
}
