/**
* Return an assoc. of timestamp/scalar pairs.
*
* @param string $type See Hashmark_Core::getValidScalarTypes() for options.
* @param mixed $minTime UNIX timestamp or strtotime() string.
* @param mixed $maxTime UNIX timestamp or strtotime() string.
* @param int $count Desired amount. Not guaranteed.
* @param boolean $uniqueTime Keep timestamps unique.
* @param boolean $uniqueValue Keep values unique.
* @param int $minValue Inclusive-minimum value. For 'decimal' type only.
* @param int $maxValue Inclusive-maximum value. For 'decimal' type only.
* @param boolean $sortByTime Sorts final set by time ascending.
*
* @return Array
*
* If $uniqueValue is true:
* Keys = UNIX timestamps; values = sample values.
* Else:
* Keys = '<time_id>=<UNIX timestamp>' strings; values = sample values.
*
* Time IDs prevent loss of duplicate times when we eventually array_combine()
* $randomTimes (as keys) with $randomValues.
*
* Client code can then list($time) = explode('=', $sample).
*/
function hashmark_random_samples($type, $minTime, $maxTime, $count, $uniqueTime = false, $uniqueValue = false, $minValue = null, $maxValue = null, $sortByTime = false)
{
// Hashmark_TestCase
require_once dirname(__FILE__) . '/../../../bootstrap.php';
if (is_string($minTime)) {
$minTime = strtotime($minTime);
}
if (is_string($maxTime)) {
$maxTime = strtotime($maxTime);
}
$now = time();
$minTimeDelta = $minTime - $now;
$maxTimeDelta = $maxTime - $now;
// Avoid infinite/slow while().
$maxPasses = 4 * $count;
$randomTimes = array();
$randomValues = array();
while ($count && $maxPasses) {
$t = $now + mt_rand($minTimeDelta, $maxTimeDelta);
if ($uniqueTime && isset($randomTimes[$t])) {
continue;
}
if ($uniqueTime) {
$randomTimes[$t] = 1;
} else {
$randomTimes[] = $t . '=' . uniqid(mt_rand(), true);
}
if ('string' == $type) {
$v = Hashmark_TestCase::randomString();
} else {
$v = Hashmark_TestCase::randomDecimal();
}
if (!is_null($minValue) && $v < $minValue) {
continue;
}
if (!is_null($maxValue) && $v > $maxValue) {
continue;
}
if ($uniqueValue && isset($randomValues[$v])) {
continue;
}
if ($uniqueValue) {
$randomValues[$v] = 1;
} else {
$randomValues[] = $v;
}
$count--;
$maxPasses--;
}
if ($uniqueTime) {
$randomTimes = array_keys($randomTimes);
}
if ($uniqueValue) {
$randomValues = array_keys($randomValues);
}
if ($sortByTime) {
sort($randomTimes);
}
return array_combine($randomTimes, $randomValues);
}
/**
* Resources needed for most tests.
*
* @return void
*/
protected function setUp()
{
parent::setUp();
$this->_partition = Hashmark::getModule('Partition', '', $this->_db);
$this->_core = Hashmark::getModule('Core', '', $this->_db);
$this->_mergeTablePrefix = Hashmark::getConfig('Partition', '', 'mergetable_prefix');
}
/**
* Resources needed for most tests.
*
* @return void
*/
protected function setUp()
{
parent::setUp();
$partition = Hashmark::getModule('Partition', '', $this->_db);
$this->_analyst = Hashmark::getModule('Analyst', 'BasicDecimal', $this->_db, $partition);
$this->_partition = Hashmark::getModule('Partition', '', $this->_db);
$this->_core = Hashmark::getModule('Core', '', $this->_db);
}
/**
* Resources needed for most tests.
*
* @return void
*/
protected function setUp()
{
parent::setUp();
$this->_core = Hashmark::getModule('Core', '', $this->_db);
}
