/**
* Update a milestone's fields.
*
* @param int $id
* @param string $name
* @param mixed $when UNIX timestamp or DATETIME string.
* @return boolean True on success.
* @throws Exception On query error.
*/
public function updateMilestone($id, $name, $when)
{
$when = Hashmark_Util::toDatetime($when);
$sql = "UPDATE {$this->_dbName}`milestones` " . 'SET `name` = ?, ' . '`when` = ? ' . 'WHERE `id` = ?';
$stmt = $this->_db->query($sql, array($name, $when, $id));
return 1 == $stmt->rowCount();
}
$scalarFields = array('type' => HASHMARK_DUMP_RANDOMSAMPLES_TYPE, 'name' => Hashmark_Util::randomSha1());
$sql = 'INSERT IGNORE INTO `scalars` ' . '(`id`, `type`) ' . 'VALUES (' . $scalarId++ . ', \'' . HASHMARK_DUMP_RANDOMSAMPLES_TYPE . "');\n";
file_put_contents(HASHMARK_DUMP_RANDOMSAMPLES_FILE, $sql);
$scalarSampleCnt = array();
$createdTables = array();
// Chunk random samples into sets to avoid memory limit.
$scalarSampleCnt = 0;
while ($scalarSampleCnt < HASHMARK_DUMP_RANDOMSAMPLES_COUNT) {
// Last parameter will sort $samples by date ascending.
$samples = hashmark_random_samples(HASHMARK_DUMP_RANDOMSAMPLES_TYPE, HASHMARK_DUMP_RANDOMSAMPLES_STARTDATE, HASHMARK_DUMP_RANDOMSAMPLES_ENDDATE, min(HASHMARK_DUMP_RANDOMSAMPLES_RANDOM_SET_MAX, HASHMARK_DUMP_RANDOMSAMPLES_COUNT - $scalarSampleCnt), false, false, null, null, true);
$scalarSampleCnt += count($samples);
$buffer = '';
$bufferSize = 0;
foreach ($samples as $timeData => $value) {
list($time) = explode('=', $timeData);
$sampleDate = Hashmark_Util::toDatetime($time);
if ('string' == HASHMARK_DUMP_RANDOMSAMPLES_TYPE) {
$value = $partition->escape($value);
}
// Create partitions as needed based on sample date.
$tableName = $partition->getIntervalTableName($scalarId, $sampleDate);
if (!isset($createdTables[$tableName])) {
$createdTables[$tableName] = 1;
$buffer .= "CREATE TABLE IF NOT EXISTS `{$tableName}` {$tableDef} AUTO_INCREMENT=1;\n";
$bufferSize++;
}
$buffer .= "INSERT INTO `{$tableName}` " . '(`value`, `end`) ' . "VALUES ('{$value}', '{$sampleDate}');\n";
$bufferSize++;
if ($bufferSize > HASHMARK_DUMP_RANDOMSAMPLES_SQL_BUFFER_MAX) {
file_put_contents(HASHMARK_DUMP_RANDOMSAMPLES_FILE, $buffer, FILE_APPEND);
$buffer = '';
/**
* Add new row to `samples` and update `scalars` statistics.
*
* @param int $scalarId
* @param string $value
* @param mixed $end UNIX timestamp or DATETIME string.
* @return boolean True on success.
* @throws Exception On query error.
*/
public function createSample($scalarId, $value, $end)
{
$end = Hashmark_Util::toDatetime($end);
// `sample_count` seeds AUTO_INCREMENT `id` values in sample partitions
$sql = "UPDATE {$this->_dbName}`scalars` " . 'SET `value` = ?, ' . '`last_agent_change` = ?, ' . '`sample_count` = `sample_count` + 1 ' . 'WHERE `id` = ?';
$this->_db->query($sql, array($value, $end, $scalarId));
$sql = 'INSERT INTO ~samples ' . '(`value`, `end`) ' . 'VALUES (?, ?)';
// queryAtDate() instead of queryCurrent() so unit tests can
// create backdated samples.
$bind = array($value, $end);
$stmt = $this->queryAtDate($scalarId, $sql, $end, $bind);
return 1 == $stmt->rowCount();
}
