/**
* Iterate through available read services and select the first with a ping
* that satisfies configured timeout restrictions (or the default)
*
* @return Apache_Solr_Service
*
* @throws Apache_Solr_NoServiceAvailableException If there are no read services that meet requirements
*/
protected function _selectReadService($forceSelect = false)
{
if (!$this->_currentReadService || !isset($this->_readableServices[$this->_currentReadService]) || $forceSelect) {
if ($this->_currentReadService && isset($this->_readableServices[$this->_currentReadService]) && $forceSelect) {
// we probably had a communication error, ping the current read service, remove it if it times out
if ($this->_readableServices[$this->_currentReadService]->ping($this->_readPingTimeout) === false) {
$this->removeReadService($this->_currentReadService);
}
}
if (count($this->_readableServices)) {
// select one of the read services at random
$ids = array_keys($this->_readableServices);
$id = $ids[rand(0, count($ids) - 1)];
$service = $this->_readableServices[$id];
if (is_array($service)) {
//convert the array definition to a client object
$service = new Apache_Solr_Service($service['host'], $service['port'], $service['path']);
$this->_readableServices[$id] = $service;
}
$service->setCreateDocuments($this->_createDocuments);
$this->_currentReadService = $id;
} else {
throw new Apache_Solr_NoServiceAvailableException('No read services were available');
}
}
return $this->_readableServices[$this->_currentReadService];
}
