first commit

modules/ps_metrics/vendor/segmentio/analytics-php/lib/Segment.php

@@ -0,0 +1,154 @@
+<?php
+
+require_once __DIR__ . '/Segment/Client.php';
+
+class Segment {
+  private static $client;
+
+  /**
+   * Initializes the default client to use. Uses the libcurl consumer by default.
+   * @param  string $secret   your project's secret key
+   * @param  array  $options  passed straight to the client
+   */
+  public static function init($secret, $options = array()) {
+    self::assert($secret, "Segment::init() requires secret");
+    self::$client = new Segment_Client($secret, $options);
+  }
+
+  /**
+   * Tracks a user action
+   *
+   * @param  array $message
+   * @return boolean whether the track call succeeded
+   */
+  public static function track(array $message) {
+    self::checkClient();
+    $event = !empty($message["event"]);
+    self::assert($event, "Segment::track() expects an event");
+    self::validate($message, "track");
+
+    return self::$client->track($message);
+  }
+
+  /**
+   * Tags traits about the user.
+   *
+   * @param  array  $message
+   * @return boolean whether the identify call succeeded
+   */
+  public static function identify(array $message) {
+    self::checkClient();
+    $message["type"] = "identify";
+    self::validate($message, "identify");
+
+    return self::$client->identify($message);
+  }
+
+  /**
+   * Tags traits about the group.
+   *
+   * @param  array  $message
+   * @return boolean whether the group call succeeded
+   */
+  public static function group(array $message) {
+    self::checkClient();
+    $groupId = !empty($message['groupId']);
+    self::assert($groupId, "Segment::group() expects a groupId");    
+    self::validate($message, "group");
+
+    return self::$client->group($message);
+  }
+
+  /**
+   * Tracks a page view
+   *
+   * @param  array $message
+   * @return boolean whether the page call succeeded
+   */
+  public static function page(array $message) {
+    self::checkClient();
+    self::validate($message, "page");
+
+    return self::$client->page($message);
+  }
+
+  /**
+   * Tracks a screen view
+   *
+   * @param  array $message
+   * @return boolean whether the screen call succeeded
+   */
+  public static function screen(array $message) {
+    self::checkClient();
+    self::validate($message, "screen");
+
+    return self::$client->screen($message);
+  }
+
+  /**
+   * Aliases the user id from a temporary id to a permanent one
+   *
+   * @param  array $from      user id to alias from
+   * @return boolean whether the alias call succeeded
+   */
+  public static function alias(array $message) {
+    self::checkClient();
+    $userId = (array_key_exists('userId', $message) && strlen((string) $message['userId']) > 0);
+    $previousId = (array_key_exists('previousId', $message) && strlen((string) $message['previousId']) > 0);
+    self::assert($userId && $previousId, "Segment::alias() requires both userId and previousId");
+
+    return self::$client->alias($message);
+  }
+
+  /**
+   * Validate common properties.
+   *
+   * @param array $message
+   * @param string $type
+   */
+  public static function validate($message, $type){
+    $userId = (array_key_exists('userId', $message) && strlen((string) $message['userId']) > 0);
+    $anonId = !empty($message['anonymousId']);
+    self::assert($userId || $anonId, "Segment::${type}() requires userId or anonymousId");
+  }
+
+  /**
+   * Flush the client
+   */
+
+  public static function flush(){
+    self::checkClient();
+
+    return self::$client->flush();
+  }
+
+  /**
+   * Check the client.
+   *
+   * @throws Exception
+   */
+  private static function checkClient(){
+    if (null != self::$client) {
+      return;
+    }
+
+    throw new Exception("Segment::init() must be called before any other tracking method.");
+  }
+
+  /**
+   * Assert `value` or throw.
+   *
+   * @param array $value
+   * @param string $msg
+   * @throws Exception
+   */
+  private static function assert($value, $msg) {
+    if (!$value) {
+      throw new Exception($msg);
+    }
+  }
+}
+
+if (!function_exists('json_encode')) {
+  throw new Exception('Segment needs the JSON PHP extension.');
+}

modules/ps_metrics/vendor/segmentio/analytics-php/lib/Segment/Client.php

@@ -0,0 +1,265 @@
+<?php
+
+require_once(__DIR__ . '/Consumer.php');
+require_once(__DIR__ . '/QueueConsumer.php');
+require_once(__DIR__ . '/Consumer/File.php');
+require_once(__DIR__ . '/Consumer/ForkCurl.php');
+require_once(__DIR__ . '/Consumer/LibCurl.php');
+require_once(__DIR__ . '/Consumer/Socket.php');
+require_once(__DIR__ . '/Version.php');
+
+class Segment_Client {
+  protected $consumer;
+
+  /**
+   * Create a new analytics object with your app's secret
+   * key
+   *
+   * @param string $secret
+   * @param array  $options array of consumer options [optional]
+   * @param string Consumer constructor to use, libcurl by default.
+   *
+   */
+  public function __construct($secret, $options = array()) {
+
+    $consumers = array(
+        "socket"     => "Segment_Consumer_Socket",
+        "file"       => "Segment_Consumer_File",
+        "fork_curl"  => "Segment_Consumer_ForkCurl",
+        "lib_curl"   => "Segment_Consumer_LibCurl"
+    );
+    // Use our socket libcurl by default
+    $consumer_type = isset($options["consumer"]) ? $options["consumer"] :
+                                                   "lib_curl";
+
+    if (!array_key_exists($consumer_type, $consumers) && class_exists($consumer_type)) {
+        if (!is_subclass_of($consumer_type, Segment_Consumer::class)) {
+            throw new Exception('Consumers must extend the Segment_Consumer abstract class');
+        }
+        // Try to resolve it by class name
+        $this->consumer  = new $consumer_type($secret, $options);
+        return;
+    }
+
+    $Consumer = $consumers[$consumer_type];
+
+    $this->consumer = new $Consumer($secret, $options);
+  }
+
+  public function __destruct() {
+    $this->consumer->__destruct();
+  }
+
+  /**
+   * Tracks a user action
+   *
+   * @param  array $message
+   * @return [boolean] whether the track call succeeded
+   */
+  public function track(array $message) {
+    $message = $this->message($message, "properties");
+    $message["type"] = "track";
+
+    return $this->consumer->track($message);
+  }
+
+  /**
+   * Tags traits about the user.
+   *
+   * @param  [array] $message
+   * @return [boolean] whether the track call succeeded
+   */
+  public function identify(array $message) {
+    $message = $this->message($message, "traits");
+    $message["type"] = "identify";
+
+    return $this->consumer->identify($message);
+  }
+
+  /**
+   * Tags traits about the group.
+   *
+   * @param  [array] $message
+   * @return [boolean] whether the group call succeeded
+   */
+  public function group(array $message) {
+    $message = $this->message($message, "traits");
+    $message["type"] = "group";
+
+    return $this->consumer->group($message);
+  }
+
+  /**
+   * Tracks a page view.
+   *
+   * @param  [array] $message
+   * @return [boolean] whether the page call succeeded
+   */
+  public function page(array $message) {
+    $message = $this->message($message, "properties");
+    $message["type"] = "page";
+
+    return $this->consumer->page($message);
+  }
+
+  /**
+   * Tracks a screen view.
+   *
+   * @param  [array] $message
+   * @return [boolean] whether the screen call succeeded
+   */
+  public function screen(array $message) {
+    $message = $this->message($message, "properties");
+    $message["type"] = "screen";
+
+    return $this->consumer->screen($message);
+  }
+
+  /**
+   * Aliases from one user id to another
+   *
+   * @param  array $message
+   * @return boolean whether the alias call succeeded
+   */
+  public function alias(array $message) {
+    $message = $this->message($message);
+    $message["type"] = "alias";
+
+    return $this->consumer->alias($message);
+  }
+
+  /**
+   * Flush any async consumers
+   * @return boolean true if flushed successfully
+   */
+  public function flush() {
+    if (method_exists($this->consumer, 'flush')) {
+      return $this->consumer->flush();
+    }
+
+    return true;
+  }
+
+    /**
+     * @return Segment_Consumer
+     */
+    public function getConsumer() {
+      return $this->consumer;
+    }
+
+
+  /**
+   * Formats a timestamp by making sure it is set
+   * and converting it to iso8601.
+   *
+   * The timestamp can be time in seconds `time()` or `microtime(true)`.
+   * any other input is considered an error and the method will return a new date.
+   *
+   * Note: php's date() "u" format (for microseconds) has a bug in it
+   * it always shows `.000` for microseconds since `date()` only accepts
+   * ints, so we have to construct the date ourselves if microtime is passed.
+   *
+   * @param  ts $timestamp - time in seconds (time())
+   */
+  private function formatTime($ts) {
+    // time()
+    if (null == $ts || !$ts) {
+      $ts = time();
+    }
+    if (false !== filter_var($ts, FILTER_VALIDATE_INT)) {
+      return date("c", (int) $ts);
+    }
+
+    // anything else try to strtotime the date.
+    if (false === filter_var($ts, FILTER_VALIDATE_FLOAT)) {
+      if (is_string($ts)) {
+        return date("c", strtotime($ts));
+      }
+  
+      return date("c");
+    }
+
+    // fix for floatval casting in send.php
+    $parts = explode(".", (string)$ts);
+    if (!isset($parts[1])) {
+      return date("c", (int)$parts[0]);
+    }
+
+    // microtime(true)
+    $sec = $parts[0];
+    $usec = $parts[1];
+    $fmt = sprintf("Y-m-d\TH:i:s.%sP", $usec);
+
+    return date($fmt, (int)$sec);
+  }
+
+  /**
+   * Add common fields to the given `message`
+   *
+   * @param array $msg
+   * @param string $def
+   * @return array
+   */
+
+  private function message($msg, $def = ""){
+    if ($def && !isset($msg[$def])) {
+      $msg[$def] = array();
+    }
+    if ($def && empty($msg[$def])) {
+      $msg[$def] = (object)$msg[$def];
+    }
+
+    if (!isset($msg["context"])) {
+      $msg["context"] = array();
+    }
+    $msg["context"] = array_merge($this->getDefaultContext(), $msg["context"]);
+
+    if (!isset($msg["timestamp"])) {
+      $msg["timestamp"] = null;
+    }
+    $msg["timestamp"] = $this->formatTime($msg["timestamp"]);
+
+    if (!isset($msg["messageId"])) {
+      $msg["messageId"] = self::messageId();
+    }
+
+    return $msg;
+  }
+
+  /**
+   * Generate a random messageId.
+   *
+   * https://gist.github.com/dahnielson/508447#file-uuid-php-L74
+   *
+   * @return string
+   */
+
+  private static function messageId(){
+    return sprintf("%04x%04x-%04x-%04x-%04x-%04x%04x%04x",
+      mt_rand(0, 0xffff),
+      mt_rand(0, 0xffff),
+      mt_rand(0, 0xffff),
+      mt_rand(0, 0x0fff) | 0x4000,
+      mt_rand(0, 0x3fff) | 0x8000,
+      mt_rand(0, 0xffff),
+      mt_rand(0, 0xffff),
+      mt_rand(0, 0xffff)
+    );
+  }
+
+  /**
+   * Add the segment.io context to the request
+   * @return array additional context
+   */
+  private function getDefaultContext() {
+    global $SEGMENT_VERSION;
+
+    return array(
+      "library" => array(
+        "name" => "analytics-php",
+        "version" => $SEGMENT_VERSION,
+        "consumer" => $this->consumer->getConsumer()
+      )
+    );
+  }
+}

modules/ps_metrics/vendor/segmentio/analytics-php/lib/Segment/Consumer.php

@@ -0,0 +1,100 @@
+<?php
+abstract class Segment_Consumer {
+  protected $type = "Consumer";
+
+  protected $options;
+  protected $secret;
+
+  /**
+   * Store our secret and options as part of this consumer
+   * @param string $secret
+   * @param array  $options
+   */
+  public function __construct($secret, $options = array()) {
+    $this->secret = $secret;
+    $this->options = $options;
+  }
+
+  /**
+   * Tracks a user action
+   *
+   * @param  array  $message
+   * @return boolean whether the track call succeeded
+   */
+  abstract public function track(array $message);
+
+  /**
+   * Tags traits about the user.
+   *
+   * @param  array  $message
+   * @return boolean whether the identify call succeeded
+   */
+  abstract public function identify(array $message);
+
+  /**
+   * Tags traits about the group.
+   *
+   * @param  array  $message
+   * @return boolean whether the group call succeeded
+   */
+  abstract public function group(array $message);
+
+  /**
+   * Tracks a page view.
+   *
+   * @param  array  $message
+   * @return boolean whether the page call succeeded
+   */
+  abstract public function page(array $message);
+
+  /**
+   * Tracks a screen view.
+   *
+   * @param  array  $message
+   * @return boolean whether the group call succeeded
+   */
+  abstract public function screen(array $message);
+
+  /**
+   * Aliases from one user id to another
+   *
+   * @param  array $message
+   * @return boolean whether the alias call succeeded
+   */
+  abstract public function alias(array $message);
+
+  /**
+   * Check whether debug mode is enabled
+   * @return boolean
+   */
+  protected function debug() {
+    return isset($this->options["debug"]) ? $this->options["debug"] : false;
+  }
+
+  /**
+   * Check whether we should connect to the API using SSL. This is enabled by
+   * default with connections which make batching requests. For connections
+   * which can save on round-trip times, you may disable it.
+   * @return boolean
+   */
+  protected function ssl() {
+    return isset($this->options["ssl"]) ? $this->options["ssl"] : true;
+  }
+
+  /**
+   * On an error, try and call the error handler, if debugging output to
+   * error_log as well.
+   * @param  string $code
+   * @param  string $msg
+   */
+  protected function handleError($code, $msg) {
+    if (isset($this->options['error_handler'])) {
+      $handler = $this->options['error_handler'];
+      $handler($code, $msg);
+    }
+
+    if ($this->debug()) {
+      error_log("[Analytics][" . $this->type . "] " . $msg);
+    }
+  }
+}

modules/ps_metrics/vendor/segmentio/analytics-php/lib/Segment/Consumer/File.php

@@ -0,0 +1,120 @@
+<?php
+
+class Segment_Consumer_File extends Segment_Consumer {
+  protected $type = "File";
+
+  private $file_handle;
+
+  /**
+   * The file consumer writes track and identify calls to a file.
+   * @param string $secret
+   * @param array  $options
+   *     string "filename" - where to log the analytics calls
+   */
+  public function __construct($secret, $options = array()) {
+    if (!isset($options["filename"])) {
+      $options["filename"] = sys_get_temp_dir() . DIRECTORY_SEPARATOR . "analytics.log";
+    }
+
+    parent::__construct($secret, $options);
+
+    try {
+      $this->file_handle = fopen($options["filename"], "a");
+      if (isset($options["filepermissions"])) {
+          chmod($options["filename"], $options["filepermissions"]);
+      } else {
+          chmod($options["filename"], 0777);
+      }
+    } catch (Exception $e) {
+      $this->handleError($e->getCode(), $e->getMessage());
+    }
+  }
+
+  public function __destruct() {
+    if ($this->file_handle &&
+        "Unknown" != get_resource_type($this->file_handle)) {
+      fclose($this->file_handle);
+    }
+  }
+
+  //define getter method for consumer type
+  public function getConsumer() {
+    return $this->type;
+  }
+
+  /**
+   * Tracks a user action
+   *
+   * @param  array $message
+   * @return [boolean] whether the track call succeeded
+   */
+  public function track(array $message) {
+    return $this->write($message);
+  }
+
+  /**
+   * Tags traits about the user.
+   *
+   * @param  array $message
+   * @return [boolean] whether the identify call succeeded
+   */
+  public function identify(array $message) {
+    return $this->write($message);
+  }
+
+  /**
+   * Tags traits about the group.
+   *
+   * @param  array $message
+   * @return [boolean] whether the group call succeeded
+   */
+  public function group(array $message) {
+    return $this->write($message);
+  }
+
+  /**
+   * Tracks a page view.
+   *
+   * @param  array $message
+   * @return [boolean] whether the page call succeeded
+   */
+  public function page(array $message) {
+    return $this->write($message);
+  }
+
+  /**
+   * Tracks a screen view.
+   *
+   * @param  array $message
+   * @return [boolean] whether the screen call succeeded
+   */
+  public function screen(array $message) {
+    return $this->write($message);
+  }
+
+  /**
+   * Aliases from one user id to another
+   *
+   * @param  array $message
+   * @return boolean whether the alias call succeeded
+   */
+  public function alias(array $message) {
+    return $this->write($message);
+  }
+
+  /**
+   * Writes the API call to a file as line-delimited json
+   * @param  [array]   $body post body content.
+   * @return [boolean] whether the request succeeded
+   */
+  private function write($body) {
+    if (!$this->file_handle) {
+      return false;
+    }
+
+      $content = json_encode($body);
+    $content.= "\n";
+
+    return fwrite($this->file_handle, $content) == strlen($content);
+  }
+}

modules/ps_metrics/vendor/segmentio/analytics-php/lib/Segment/Consumer/ForkCurl.php

@@ -0,0 +1,100 @@
+<?php
+
+class Segment_Consumer_ForkCurl extends Segment_QueueConsumer {
+  protected $type = "ForkCurl";
+
+  /**
+   * Creates a new queued fork consumer which queues fork and identify
+   * calls before adding them to
+   * @param string $secret
+   * @param array  $options
+   *     boolean  "debug" - whether to use debug output, wait for response.
+   *     number   "max_queue_size" - the max size of messages to enqueue
+   *     number   "flush_at" - how many messages to send in a single request
+   */
+  public function __construct($secret, $options = array()) {
+    parent::__construct($secret, $options);
+  }
+
+  //define getter method for consumer type
+  public function getConsumer() {
+    return $this->type;
+  }
+
+  /**
+   * Make an async request to our API. Fork a curl process, immediately send
+   * to the API. If debug is enabled, we wait for the response.
+   * @param  array   $messages array of all the messages to send
+   * @return boolean whether the request succeeded
+   */
+  public function flushBatch($messages) {
+    $body = $this->payload($messages);
+    $payload = json_encode($body);
+
+    // Escape for shell usage.
+    $payload = escapeshellarg($payload);
+    $secret = escapeshellarg($this->secret);
+
+    $protocol = $this->ssl() ? "https://" : "http://";
+    if ($this->host) {
+      $host = $this->host;
+    } else {
+      $host = "api.segment.io";
+    }
+    $path = "/v1/batch";
+    $url = $protocol . $host . $path;
+
+    $cmd = "curl -u ${secret}: -X POST -H 'Content-Type: application/json'";
+    
+    $tmpfname = "";
+    if ($this->compress_request) {
+      // Compress request to file
+      $tmpfname = tempnam("/tmp", "forkcurl_");
+      $cmd2 = "echo " . $payload . " | gzip > " . $tmpfname;
+      exec($cmd2, $output, $exit);
+
+      if (0 != $exit) {
+        $this->handleError($exit, $output);
+        return false;
+      }
+
+      $cmd.= " -H 'Content-Encoding: gzip'";
+
+      $cmd.= " --data-binary '@" . $tmpfname . "'";
+    } else {
+      $cmd.= " -d " . $payload;
+    }
+    
+    $cmd.= " '" . $url . "'";
+
+    // Verify message size is below than 32KB
+    if (strlen($payload) >= 32 * 1024) {
+      $msg = "Message size is larger than 32KB";
+      error_log("[Analytics][" . $this->type . "] " . $msg);
+
+      return false;
+    }
+
+    // Send user agent in the form of {library_name}/{library_version} as per RFC 7231.
+    $library = $messages[0]['context']['library'];
+    $libName = $library['name'];
+    $libVersion = $library['version'];
+    $cmd.= " -H 'User-Agent: ${libName}/${libVersion}'";
+
+    if (!$this->debug()) {
+      $cmd .= " > /dev/null 2>&1 &";
+    }
+
+    exec($cmd, $output, $exit);
+
+    if (0 != $exit) {
+      $this->handleError($exit, $output);
+    }
+
+    if ($tmpfname != "") {
+      unlink($tmpfname);
+    }
+
+    return 0 == $exit;
+  }
+}

modules/ps_metrics/vendor/segmentio/analytics-php/lib/Segment/Consumer/LibCurl.php

@@ -0,0 +1,114 @@
+<?php
+
+class Segment_Consumer_LibCurl extends Segment_QueueConsumer {
+  protected $type = "LibCurl";
+
+  /**
+   * Creates a new queued libcurl consumer
+   * @param string $secret
+   * @param array  $options
+   *     boolean  "debug" - whether to use debug output, wait for response.
+   *     number   "max_queue_size" - the max size of messages to enqueue
+   *     number   "flush_at" - how many messages to send in a single request
+   */
+  public function __construct($secret, $options = array()) {
+    parent::__construct($secret, $options);
+  }
+
+  //define getter method for consumer type
+  public function getConsumer() {
+    return $this->type;
+  }
+
+  /**
+   * Make a sync request to our API. If debug is
+   * enabled, we wait for the response
+   * and retry once to diminish impact on performance.
+   * @param  array   $messages array of all the messages to send
+   * @return boolean whether the request succeeded
+   */
+  public function flushBatch($messages) {
+    $body = $this->payload($messages);
+    $payload = json_encode($body);
+    $secret = $this->secret;
+
+    if ($this->compress_request) {
+      $payload = gzencode($payload);
+    }
+
+    $protocol = $this->ssl() ? "https://" : "http://";
+    if ($this->host) {
+      $host = $this->host;
+    } else {
+      $host = "api.segment.io";
+    }
+    $path = "/v1/batch";
+    $url = $protocol . $host . $path;
+
+    $backoff = 100;     // Set initial waiting time to 100ms
+
+    while ($backoff < $this->maximum_backoff_duration) {
+      $start_time = microtime(true);
+
+      // open connection
+      $ch = curl_init();
+
+      // set the url, number of POST vars, POST data
+      curl_setopt($ch, CURLOPT_USERPWD, $secret . ':');
+      curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
+
+      // set variables for headers
+      $header = array();
+      $header[] = 'Content-Type: application/json';
+
+      if ($this->compress_request) {
+        $header[] = 'Content-Encoding: gzip';
+      }
+
+      // Send user agent in the form of {library_name}/{library_version} as per RFC 7231.
+      $library = $messages[0]['context']['library'];
+      $libName = $library['name'];
+      $libVersion = $library['version'];
+      $header[] = "User-Agent: ${libName}/${libVersion}";
+
+      curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
+      curl_setopt($ch, CURLOPT_URL, $url);
+      curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+
+      // retry failed requests just once to diminish impact on performance
+      $responseContent = curl_exec($ch);
+
+      $err = curl_error($ch);
+      if ($err) {
+        $this->handleError(curl_errno($ch), $err);
+        return;
+      }
+
+      $responseCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+
+      //close connection
+      curl_close($ch);
+
+      $elapsed_time = microtime(true) - $start_time;
+
+      if (200 != $responseCode) {
+        // log error
+        $this->handleError($responseCode, $responseContent);
+
+        if (($responseCode >= 500 && $responseCode <= 600) || 429 == $responseCode) {
+          // If status code is greater than 500 and less than 600, it indicates server error
+          // Error code 429 indicates rate limited.
+          // Retry uploading in these cases.
+          usleep($backoff * 1000);
+          $backoff *= 2;
+        } elseif ($responseCode >= 400) {
+          break;
+        }
+      } else {
+        break;  // no error
+      }
+    }
+
+    return $responseCode;
+  }
+}

modules/ps_metrics/vendor/segmentio/analytics-php/lib/Segment/Consumer/Socket.php

@@ -0,0 +1,226 @@
+<?php
+
+class Segment_Consumer_Socket extends Segment_QueueConsumer {
+  protected $type = "Socket";
+  private $socket_failed;
+
+  /**
+   * Creates a new socket consumer for dispatching async requests immediately
+   * @param string $secret
+   * @param array  $options
+   *     number   "timeout" - the timeout for connecting
+   *     function "error_handler" - function called back on errors.
+   *     boolean  "debug" - whether to use debug output, wait for response.
+   */
+  public function __construct($secret, $options = array()) {
+    if (!isset($options["timeout"])) {
+      $options["timeout"] = 5;
+    }
+
+    if (!isset($options["host"])) {
+      $options["host"] = "api.segment.io";
+    }
+
+    parent::__construct($secret, $options);
+  }
+
+  //define getter method for consumer type
+  public function getConsumer() {
+    return $this->type;
+  }
+
+  public function flushBatch($batch) {
+    $socket = $this->createSocket();
+
+    if (!$socket) {
+      return;
+    }
+
+    $payload = $this->payload($batch);
+    $payload = json_encode($payload);
+
+    $body = $this->createBody($this->options["host"], $payload);
+    if (false === $body) {
+      return false;
+    }
+
+    return $this->makeRequest($socket, $body);
+  }
+
+  private function createSocket() {
+    if ($this->socket_failed) {
+      return false;
+    }
+
+    $protocol = $this->ssl() ? "ssl" : "tcp";
+    $host = $this->options["host"];
+    $port = $this->ssl() ? 443 : 80;
+    $timeout = $this->options["timeout"];
+
+    try {
+      // Open our socket to the API Server.
+      // Since we're try catch'ing prevent PHP logs.
+      $socket = @pfsockopen(
+        $protocol . "://" . $host,
+        $port,
+        $errno,
+        $errstr,
+        $timeout
+      );
+
+      // If we couldn't open the socket, handle the error.
+      if (false === $socket) {
+        $this->handleError($errno, $errstr);
+        $this->socket_failed = true;
+
+        return false;
+      }
+
+      return $socket;
+    } catch (Exception $e) {
+      $this->handleError($e->getCode(), $e->getMessage());
+      $this->socket_failed = true;
+
+      return false;
+    }
+  }
+
+  /**
+   * Attempt to write the request to the socket, wait for response if debug
+   * mode is enabled.
+   * @param  stream  $socket the handle for the socket
+   * @param  string  $req    request body
+   * @param  boolean $retry
+   * @return boolean $success
+   */
+  private function makeRequest($socket, $req, $retry = true) {
+    $bytes_written = 0;
+    $bytes_total = strlen($req);
+    $closed = false;
+    $success = true;
+
+    // Retries with exponential backoff until success
+    $backoff = 100;   // Set initial waiting time to 100ms
+
+    while (true) {
+      // Send request to server
+      while (!$closed && $bytes_written < $bytes_total) {
+        try {
+          // Since we're try catch'ing prevent PHP logs.
+          $written = @fwrite($socket, substr($req, $bytes_written));
+        } catch (Exception $e) {
+          $this->handleError($e->getCode(), $e->getMessage());
+          $closed = true;
+        }
+        if (!isset($written) || !$written) {
+          $closed = true;
+        } else {
+          $bytes_written += $written;
+        }
+      }
+
+      // Get response for request
+      $statusCode = 0;
+      $errorMessage = "";
+
+      if (!$closed) {
+        $res = $this->parseResponse(fread($socket, 2048));
+        $statusCode = (int)$res["status"];
+        $errorMessage = $res["message"];
+      }
+      fclose($socket);
+
+      // If status code is 200, return true
+      if (200 == $statusCode) {
+        return true;
+      }
+
+      // If status code is greater than 500 and less than 600, it indicates server error
+      // Error code 429 indicates rate limited.
+      // Retry uploading in these cases.
+      if (($statusCode >= 500 && $statusCode <= 600) || 429 == $statusCode || 0 == $statusCode) {
+        if ($backoff >= $this->maximum_backoff_duration) {
+          break;
+        }
+
+        usleep($backoff * 1000);
+      } elseif ($statusCode >= 400) {
+        if ($this->debug()) {
+          $this->handleError($res["status"], $res["message"]);
+        }
+
+        break;
+      }
+
+      // Retry uploading...
+      $backoff *= 2;
+      $socket = $this->createSocket();
+    }
+
+    return $success;
+  }
+
+  /**
+   * Create the body to send as the post request.
+   * @param  string $host
+   * @param  string $content
+   * @return string body
+   */
+  private function createBody($host, $content) {
+    $req = "";
+    $req.= "POST /v1/batch HTTP/1.1\r\n";
+    $req.= "Host: " . $host . "\r\n";
+    $req.= "Content-Type: application/json\r\n";
+    $req.= "Authorization: Basic " . base64_encode($this->secret . ":") . "\r\n";
+    $req.= "Accept: application/json\r\n";
+
+    // Send user agent in the form of {library_name}/{library_version} as per RFC 7231.
+    $content_json = json_decode($content, true);
+    $library = $content_json['batch'][0]['context']['library'];
+    $libName = $library['name'];
+    $libVersion = $library['version'];
+    $req.= "User-Agent: ${libName}/${libVersion}\r\n";
+
+    // Compress content if compress_request is true
+    if ($this->compress_request) {
+      $content = gzencode($content);
+
+      $req.= "Content-Encoding: gzip\r\n";
+    }
+
+    $req.= "Content-length: " . strlen($content) . "\r\n";
+    $req.= "\r\n";
+    $req.= $content;
+
+    // Verify message size is below than 32KB
+    if (strlen($req) >= 32 * 1024) {
+      $msg = "Message size is larger than 32KB";
+      error_log("[Analytics][" . $this->type . "] " . $msg);
+
+      return false;
+    }
+
+    return $req;
+  }
+
+  /**
+   * Parse our response from the server, check header and body.
+   * @param  string $res
+   * @return array
+   *     string $status  HTTP code, e.g. "200"
+   *     string $message JSON response from the api
+   */
+  private function parseResponse($res) {
+    $contents = explode("\n", $res);
+
+    // Response comes back as HTTP/1.1 200 OK
+    // Final line contains HTTP response.
+    $status = explode(" ", $contents[0], 3);
+    $result = $contents[count($contents) - 1];
+
+    return array(
+      "status"  => isset($status[1]) ? $status[1] : null,
+      "message" => $result
+    );
+  }
+}

modules/ps_metrics/vendor/segmentio/analytics-php/lib/Segment/Consumer/index.php

@@ -0,0 +1,11 @@
+<?php
+
+header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
+header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
+
+header("Cache-Control: no-store, no-cache, must-revalidate");
+header("Cache-Control: post-check=0, pre-check=0", false);
+header("Pragma: no-cache");
+
+header("Location: ../");
+exit;

modules/ps_metrics/vendor/segmentio/analytics-php/lib/Segment/QueueConsumer.php

@@ -0,0 +1,214 @@
+<?php
+
+abstract class Segment_QueueConsumer extends Segment_Consumer {
+  protected $type = "QueueConsumer";
+
+  protected $queue;
+  protected $max_queue_size = 10000;
+  protected $max_queue_size_bytes = 33554432; //32M
+
+  protected $flush_at = 100;
+  protected $max_batch_size_bytes = 512000; //500kb
+  protected $max_item_size_bytes = 32000; // 32kb
+  protected $maximum_backoff_duration = 10000;    // Set maximum waiting limit to 10s
+  protected $host = "";
+  protected $compress_request = false;
+
+  protected $flush_interval_in_mills = 10000; //frequency in milliseconds to send data, default 10
+
+  /**
+   * Store our secret and options as part of this consumer
+   * @param string $secret
+   * @param array  $options
+   */
+  public function __construct($secret, $options = array()) {
+    parent::__construct($secret, $options);
+
+    if (isset($options["max_queue_size"])) {
+      $this->max_queue_size = $options["max_queue_size"];
+    }
+
+    if (isset($options["batch_size"])) {
+      if($options["batch_size"] < 1) {
+        $msg = "Batch Size must not be less than 1";
+        error_log("[Analytics][" . $this->type . "] " . $msg);
+      } else {
+        $msg = "WARNING: batch_size option to be depricated soon, please use new option flush_at";
+        error_log("[Analytics][" . $this->type . "] " . $msg);
+        $this->flush_at = $options["batch_size"];
+      }
+    }
+
+    if (isset($options["flush_at"])) {
+      if($options["flush_at"] < 1) {
+        $msg = "Flush at Size must not be less than 1";
+        error_log("[Analytics][" . $this->type . "] " . $msg);
+      } else {
+        $this->flush_at = $options["flush_at"];
+      }
+    }    
+
+    if (isset($options["host"])) {
+      $this->host = $options["host"];
+    }
+
+    if (isset($options["compress_request"])) {
+      $this->compress_request = json_decode($options["compress_request"]);
+    }
+
+    if (isset($options["flush_interval"])) {
+      if($options["flush_interval"] < 1000) {
+        $msg = "Flush interval must not be less than 1 second";
+        error_log("[Analytics][" . $this->type . "] " . $msg);
+      } else {
+        $this->flush_interval_in_mills = $options["flush_interval"];
+      }
+    }
+    
+    $this->queue = array();
+  }
+
+  public function __destruct() {
+    // Flush our queue on destruction
+    $this->flush();
+  }
+
+  /**
+   * Tracks a user action
+   *
+   * @param  array  $message
+   * @return boolean whether the track call succeeded
+   */
+  public function track(array $message) {
+    return $this->enqueue($message);
+  }
+
+  /**
+   * Tags traits about the user.
+   *
+   * @param  array  $message
+   * @return boolean whether the identify call succeeded
+   */
+  public function identify(array $message) {
+    return $this->enqueue($message);
+  }
+
+  /**
+   * Tags traits about the group.
+   *
+   * @param  array  $message
+   * @return boolean whether the group call succeeded
+   */
+  public function group(array $message) {
+    return $this->enqueue($message);
+  }
+
+  /**
+   * Tracks a page view.
+   *
+   * @param  array  $message
+   * @return boolean whether the page call succeeded
+   */
+  public function page(array $message) {
+    return $this->enqueue($message);
+  }
+
+  /**
+   * Tracks a screen view.
+   *
+   * @param  array  $message
+   * @return boolean whether the screen call succeeded
+   */
+  public function screen(array $message) {
+    return $this->enqueue($message);
+  }
+
+  /**
+   * Aliases from one user id to another
+   *
+   * @param  array $message
+   * @return boolean whether the alias call succeeded
+   */
+  public function alias(array $message) {
+    return $this->enqueue($message);
+  }
+
+  /**
+   * Flushes our queue of messages by batching them to the server
+   */
+  public function flush() {
+    $count = count($this->queue);
+    $success = true;
+
+    while ($count > 0 && $success) {
+
+      $batch = array_splice($this->queue, 0, min($this->flush_at, $count));
+
+      if (mb_strlen(serialize($batch), '8bit') >= $this->max_batch_size_bytes) {
+          $msg = "Batch size is larger than 500KB";
+          error_log("[Analytics][" . $this->type . "] " . $msg);
+
+          return false;
+      }
+
+      $success = $this->flushBatch($batch);
+
+      $count = count($this->queue);
+
+      if($count > 0)
+        usleep($this->flush_interval_in_mills * 1000);
+    }
+
+    return $success;
+  }
+
+  /**
+   * Adds an item to our queue.
+   * @param  mixed   $item
+   * @return boolean whether call has succeeded
+   */
+  protected function enqueue($item) {
+    $count = count($this->queue);
+
+    if ($count > $this->max_queue_size) {
+      return false;
+    }
+
+    if (mb_strlen(serialize((array)$this->queue), '8bit') >= $this->max_queue_size_bytes) {
+        $msg = "Queue size is larger than 32MB";
+        error_log("[Analytics][" . $this->type . "] " . $msg);
+
+      return false;
+    }
+
+    if (mb_strlen(json_encode($item), '8bit') >= $this->max_item_size_bytes) {
+        $msg = "Item size is larger than 32KB";
+        error_log("[Analytics][" . $this->type . "] " . $msg);
+
+        return false;
+    }
+
+    $count = array_push($this->queue, $item);
+ 
+
+    if ($count >= $this->flush_at) {
+      return $this->flush(); // return ->flush() result: true on success
+    }
+
+    return true;
+  }
+
+  /**
+   * Given a batch of messages the method returns
+   * a valid payload.
+   *
+   * @param {Array} $batch
+   * @return {Array}
+   */
+  protected function payload($batch){
+    return array(
+      "batch" => $batch,
+      "sentAt" => date("c"),
+    );
+  }
+}

modules/ps_metrics/vendor/segmentio/analytics-php/lib/Segment/Version.php

@@ -0,0 +1,3 @@
+<?php
+global $SEGMENT_VERSION;
+$SEGMENT_VERSION = "1.8.0";

modules/ps_metrics/vendor/segmentio/analytics-php/lib/Segment/index.php

@@ -0,0 +1,11 @@
+<?php
+
+header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
+header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
+
+header("Cache-Control: no-store, no-cache, must-revalidate");
+header("Cache-Control: post-check=0, pre-check=0", false);
+header("Pragma: no-cache");
+
+header("Location: ../");
+exit;

modules/ps_metrics/vendor/segmentio/analytics-php/lib/index.php

@@ -0,0 +1,11 @@
+<?php
+
+header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
+header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
+
+header("Cache-Control: no-store, no-cache, must-revalidate");
+header("Cache-Control: post-check=0, pre-check=0", false);
+header("Pragma: no-cache");
+
+header("Location: ../");
+exit;