/**
* Statement execution supports fallthrough retry policy (read exception).
*
* This test will ensure that the PHP driver supports the ability to
* provide any exception that occurs when executing statements. This test
* will ensure that a ReadTimeoutException occurs when a consistency level
* cannot be achieved.
*
* @test
* @ticket PHP-60
*
* @cassandra-version-2.0
*
* @expectedException \Cassandra\Exception\UnavailableException
* @expectedExceptionMessageRegExp |Cannot achieve consistency level .*|
*/
public function testFallThroughPolicyRead()
{
// Create the retry policy (RF = 3 with 1 node)
$policy = new RetryPolicy\Fallthrough();
// Iterate over each statement type
foreach (range(1, 3) as $statementType) {
// Determine if the statement type should be skipped
if ($statementType == self::BATCH_STATEMENT && version_compare(\Cassandra::CPP_DRIVER_VERSION, "2.2.3") < 0) {
if (Integration::isDebug()) {
fprintf(STDOUT, "Skipping Batch Statements in %s: Issue fixed in DataStax C/C++ v2.2.3" . PHP_EOL, $this->getName());
}
} else {
// Create an exception during read
$this->insert($statementType, $policy, 0, self::NUMBER_OF_INSERTS, \Cassandra::CONSISTENCY_ONE);
$this->assert($policy, 0, self::NUMBER_OF_INSERTS, \Cassandra::CONSISTENCY_ALL);
}
}
}
/**
* Page through the results while validating no memory leaks exists
*
* @param $start Starting memory value
* @return int Number of rows visited
*/
private function validatePageResults($rows)
{
// Get the starting memory usage
$start = memory_get_usage() / 1024;
if (Integration::isDebug() && Integration::isVerbose()) {
fprintf(STDOUT, "Start Usage: %dkb" . PHP_EOL, $start);
}
// Page over each result set and count the number of rows visited
$count = $rows->count();
while ($rows = $rows->nextPage()) {
if ($rows->count() != 0) {
$count += $rows->count();
if (Integration::isDebug() && Integration::isVerbose()) {
fprintf(STDOUT, "Page %d: Current memory usage is %dkb" . PHP_EOL, $count / 2, memory_get_usage() / 1024 - $start);
}
}
}
// Get the final memory usage (and apply a tolerance to compensate for GC)
$end = memory_get_usage() / 1024;
if (Integration::isDebug() && Integration::isVerbose()) {
fprintf(STDOUT, "End Usage: %dkb [%dkb]" . PHP_EOL, $end, $end - $start);
}
$difference = $end - $start - 20;
// 20KB tolerance
$this->assertLessThanOrEqual(0, $difference);
// Return the number of rows visited
return $count;
}