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PhabricatorBot.php
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Mon, Jul 15, 05:48

PhabricatorBot.php
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<?php
/**
* Simple IRC bot which runs as a Phabricator daemon. Although this bot is
* somewhat useful, it is also intended to serve as a demo of how to write
* "system agents" which communicate with Phabricator over Conduit, so you can
* script system interactions and integrate with other systems.
*
* NOTE: This is super janky and experimental right now.
*/
final class PhabricatorBot extends PhabricatorDaemon {
private $handlers;
private $conduit;
private $config;
private $pollFrequency;
private $protocolAdapter;
protected function run() {
$argv = $this->getArgv();
if (count($argv) !== 1) {
throw new Exception(
pht(
'Usage: %s %s',
__CLASS__,
'<json_config_file>'));
}
$json_raw = Filesystem::readFile($argv[0]);
try {
$config = phutil_json_decode($json_raw);
} catch (PhutilJSONParserException $ex) {
throw new PhutilProxyException(
pht("File '%s' is not valid JSON!", $argv[0]),
$ex);
}
$nick = idx($config, 'nick', 'phabot');
$handlers = idx($config, 'handlers', array());
$protocol_adapter_class = idx(
$config,
'protocol-adapter',
'PhabricatorIRCProtocolAdapter');
$this->pollFrequency = idx($config, 'poll-frequency', 1);
$this->config = $config;
foreach ($handlers as $handler) {
$obj = newv($handler, array($this));
$this->handlers[] = $obj;
}
$ca_bundle = idx($config, 'https.cabundle');
if ($ca_bundle) {
HTTPSFuture::setGlobalCABundleFromPath($ca_bundle);
}
$conduit_uri = idx($config, 'conduit.uri');
if ($conduit_uri) {
$conduit_token = idx($config, 'conduit.token');
// Normalize the path component of the URI so users can enter the
// domain without the "/api/" part.
$conduit_uri = new PhutilURI($conduit_uri);
$conduit_host = (string)$conduit_uri->setPath('/');
$conduit_uri = (string)$conduit_uri->setPath('/api/');
$conduit = new ConduitClient($conduit_uri);
if ($conduit_token) {
$conduit->setConduitToken($conduit_token);
} else {
$conduit_user = idx($config, 'conduit.user');
$conduit_cert = idx($config, 'conduit.cert');
$response = $conduit->callMethodSynchronous(
'conduit.connect',
array(
'client' => __CLASS__,
'clientVersion' => '1.0',
'clientDescription' => php_uname('n').':'.$nick,
'host' => $conduit_host,
'user' => $conduit_user,
'certificate' => $conduit_cert,
));
}
$this->conduit = $conduit;
}
// Instantiate Protocol Adapter, for now follow same technique as
// handler instantiation
$this->protocolAdapter = newv($protocol_adapter_class, array());
$this->protocolAdapter
->setConfig($this->config)
->connect();
$this->runLoop();
$this->protocolAdapter->disconnect();
}
public function getConfig($key, $default = null) {
return idx($this->config, $key, $default);
}
private function runLoop() {
do {
PhabricatorCaches::destroyRequestCache();
$this->stillWorking();
$messages = $this->protocolAdapter->getNextMessages($this->pollFrequency);
if (count($messages) > 0) {
foreach ($messages as $message) {
$this->routeMessage($message);
}
}
foreach ($this->handlers as $handler) {
$handler->runBackgroundTasks();
}
} while (!$this->shouldExit());
}
public function writeMessage(PhabricatorBotMessage $message) {
return $this->protocolAdapter->writeMessage($message);
}
private function routeMessage(PhabricatorBotMessage $message) {
$ignore = $this->getConfig('ignore');
if ($ignore) {
$sender = $message->getSender();
if ($sender && in_array($sender->getName(), $ignore)) {
return;
}
}
if ($message->getCommand() == 'LOG') {
$this->log('[LOG] '.$message->getBody());
}
foreach ($this->handlers as $handler) {
try {
$handler->receiveMessage($message);
} catch (Exception $ex) {
phlog($ex);
}
}
}
public function getAdapter() {
return $this->protocolAdapter;
}
public function getConduit() {
if (empty($this->conduit)) {
throw new Exception(
pht(
"This bot is not configured with a Conduit uplink. Set '%s' and ".
"'%s' in the configuration to connect.",
'conduit.uri',
'conduit.token'));
}
return $this->conduit;
}
}

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