function exec_ec2_query($creds, $ec2_api_action)
{
$query_time = time();
// Define query string keys/values
$http_query_params = array('Action' => $ec2_api_action, 'AWSAccessKeyId' => $creds['access_key'], 'Timestamp' => gmdate('Y-m-d\\TH:i:s\\Z'), 'Version' => '2010-06-15', 'SignatureVersion' => 2, 'SignatureMethod' => 'HmacSHA256');
// Note that for "DescribeImages" we are filtering for AMI images for which the "self account"
// has implicit (i.e. is the owner of the image) or explicit permission.
if ($ec2_api_action == "DescribeImages") {
//$http_query_params['Owner.1'] = "self" ;
//$http_query_params['Owner.2'] = "explicit" ;
$http_query_params['Owner'] = "self";
}
// Note that for "DescribeSpotPriceHistory" we need to provide the start time and end time
// for the spot price. If we do not (the times are optional), then we get a long, long, long
// dataset for the spot price - i.e. the spotprice history will begin from whatever is
// the oldest cached/stored in the Amazon API system.
// Consequently, we request the price within the last 1 hour.
if ($ec2_api_action == "DescribeSpotPriceHistory") {
$http_query_params['StartTime'] = gmdate('Y-m-d\\TH:i:s\\Z', mktime() - 30);
$http_query_params['EndTime'] = gmdate('Y-m-d\\TH:i:s\\Z', mktime());
}
// EC2 API requires the query parameters to be
// sorted in "natural order" and then URL encoded
uksort($http_query_params, 'strnatcmp');
$query_string = '';
foreach ($http_query_params as $key => $val) {
$query_string .= "&{$key}=" . rawurlencode($val);
}
$query_string = substr($query_string, 1);
// Formulate the HTTP query string
$http_get_string = "GET\n" . "{$creds['aws_endpoint']}\n" . "/\n" . $query_string;
// Generate base64-encoded RFC 2104-compliant HMAC-SHA256
// signature with Secret Key using PHP 5's native
// hash_hmac function.
$http_query_params['Signature'] = base64_encode(hash_hmac('sha256', $http_get_string, $creds['secret_key'], true));
// simple GET request to EC2 Query API with regular URL
// encoded query string
$http_request = "https://{$creds['aws_endpoint']}/?" . http_build_query($http_query_params);
debug_output(__FILE__ . ':' . __FUNCTION__ . ':' . __LINE__ . ':' . "HTTP request sent to EC2 for {$ec2_api_action} = {$http_request}");
$http_request_result = file_get_contents($http_request);
// Check for errors in HTTPS GET operation
if (is_null($http_request_result) or empty($http_request_result)) {
write_to_log_file("Error: HTTP result from EC2 was either null/empty or errors encountered\n");
write_to_log_file("HTTP Result : {$http_request_result}\n");
exit;
}
// The result from EC2 EC2 is in XML format - so convert it to an XML object.
$xml_object = simplexml_load_string($http_request_result);
// Since every successful query to the EC2 API will have a
// "RequestId" returned, check for that first.
$requestId = $xml_object->requestId;
if (is_null($requestId) or empty($requestId)) {
write_to_log_file(STDERR, "Error: EC2 requestId was either null or empty\n");
exit;
}
return $xml_object;
}
$shard_info .= $shard['_id'] . ' = ' . $shard['host'] . ' || ';
}
write_to_data_file($zabbix_name, "shard_info", $shard_info);
$collection = $mongo_connection->selectDB('config')->selectCollection('databases');
$cursor = $collection->find();
$db_array = iterator_to_array($cursor);
$db_info = '';
foreach ($db_array as $db) {
if ($db['partitioned']) {
$partitioned = 'yes';
} else {
$partitioned = 'no';
}
$db_info .= $db['_id'] . ' : ' . 'partitioned = ' . $partitioned . ', primary = ' . $db['primary'] . ' || ';
}
write_to_data_file($zabbix_name, "db_info", $db_info);
}
//-------------------------------------------------------------------------//
// Get data collection end time (we will use this to compute the total data collection time)
$end_time = time();
$data_collection_time = $end_time - $start_time;
write_to_data_file($zabbix_name, "mongoDB_plugin_data_collection_time", $data_collection_time);
write_to_data_file($zabbix_name, "mongoDB_plugin_version", $command_version);
write_to_data_file($zabbix_name, "mongoDB_plugin_checksum", $md5_checksum_string);
fclose($data_file_handle);
exec("zabbix_sender -vv -z {$zabbix_server} -p {$zabbix_server_port} -i {$data_file_name} 2>&1", $log_file_data);
foreach ($log_file_data as $log_line) {
write_to_log_file("{$log_line}\n");
}
fclose($log_file_handle);
exit;
//-------------------------------------------------------------------------//
$zabbix_name = $options['z'];
// Remove spaces from zabbix name for file data and log file creation
$file_base_name = str_replace(' ', '_', $zabbix_name);
$zabbix_server = $options['H'] ? $options['H'] : '127.0.0.1';
$zabbix_server_port = $options['P'] ? $options['P'] : '10051';
$debug_mode = isset($options['D']);
$ssl = isset($options['ssl']);
if ($ssl && !MONGO_SUPPORTS_SSL) {
echo "WARNING: --ssl option is specified, but we will not use it, because the PHP Mongo extension does not support SSL!\n";
$ssl = false;
}
$data_lines = array();
$md5_checksum_string = md5_file($argv[0]);
if ($debug_mode) {
write_to_log_file("version {$command_version}");
}
//-------------------------------------------------------------------------//
//-------------------------------------------------------------------------//
function write_to_log($output_line)
{
global $command_name;
fprintf(STDERR, "%s: %s\n", $command_name, $output_line);
}
//-------------------------------------------------------------------------//
//-------------------------------------------------------------------------//
function write_to_data_lines($zabbix_name, $key, $value)
{
global $data_lines;
// Only if we have a value do we want to record this metric
if (isset($value) && $value !== '') {
