/**
* Runs chef client on the servers that match the query storing command output in the given file.
*
* @param string $query The chef query to specify what servers to update.
* @param string $progressFile The filename to send the knife output to.
* @param array $options Additional options for knife ssh. For example: ['-groups' => 'foo']
* @param array $chefOptions Additional options for chef client. For example: ['--override-runlist' => 'role[foo]']
* @return void
*/
public function updateServers($query, $progressFile = null, array $options = [], array $chefOptions = [])
{
$instanceIdUrl = 'http://169.254.169.254/latest/meta-data/instance-id';
$chefOptions = array_merge($chefOptions, ['--json-attributes' => '/etc/chef/first-boot.json']);
$chefCommand = \Hiatus\addArguments("sudo chef-client -N `curl {$instanceIdUrl}`", $chefOptions);
$options = array_merge($options, $this->_chefClientParameters(), $this->_ec2SshParameters(), [$query, $chefCommand]);
$command = \Hiatus\addArguments("{$this->_baseKnifeCommand} ssh", $options);
if ($progressFile !== null) {
\Hiatus\execX("{$command} >" . escapeshellarg($progressFile) . ' 2>&1 &');
} else {
passthru($command);
}
}
/**
* Executes the /tmp/userScript on the docker image given.
*
* @param array $image An image specification. The image must be fully prepared and have an executeCommand to provide what command/interpreter
* to use to kick off the user's script.
* @return array The result of executing the user's script, including
* int exitStatus The exit status of the user's script
* string output The stdout of the user's script
* string stderr The stderr of the user's script
*/
function execute(array $image)
{
$tagName = $image['tagName'];
$executeCommand = $image['executeCommand'];
file_put_contents('php://stderr', "Executing script on docker image {$tagName}\n");
list($containerId) = \Hiatus\execX('docker -H tcp://localhost:4243 run -d', [$tagName, $executeCommand, '/tmp/userScript']);
$containerId = trim($containerId);
list($exitStatus) = \Hiatus\execX('docker -H tcp://localhost:4243 wait', [$containerId], 10);
$exitStatus = trim($exitStatus);
$exitStatus = is_numeric($exitStatus) ? (int) $exitStatus : null;
$output = dockerRequest('containers/' . urlencode($containerId) . '/attach?logs=1&stdout=1', 'POST');
$stderr = dockerRequest('containers/' . urlencode($containerId) . '/attach?logs=1&stderr=1', 'POST');
dockerRequest('containers/' . urlencode($containerId), 'DELETE');
return ['exitStatus' => $exitStatus, 'output' => $output, 'stderr' => $stderr];
}