Speed up tests by skipping pings (#11642)

* Mock fping for module tests, there is no need.
Removes some wait time.

* fixup some rrd disabling code

* oops

LibreNMS/Fping.php

@@ -0,0 +1,91 @@
+<?php
+/**
+ * Fping.php
+ *
+ * -Description-
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @package    LibreNMS
+ * @link       http://librenms.org
+ * @copyright  2020 Tony Murray
+ * @author     Tony Murray <murraytony@gmail.com>
+ */
+
+namespace LibreNMS;
+
+use Log;
+use Symfony\Component\Process\Process;
+
+class Fping
+{
+    /**
+     * Run fping against a hostname/ip in count mode and collect stats.
+     *
+     * @param string $host
+     * @param int $count (min 1)
+     * @param int $interval (min 20)
+     * @param int $timeout (not more than $interval)
+     * @param string $address_family ipv4 or ipv6
+     * @return array
+     */
+    public function ping($host, $count = 3, $interval = 1000, $timeout = 500, $address_family = 'ipv4')
+    {
+        // Default to ipv4
+        $fping_name = $address_family == 'ipv6' ? 'fping6' : 'fping';
+        $interval = max($interval, 20);
+
+        // build the command
+        $cmd = [
+            Config::get($fping_name, $fping_name),
+            '-e',
+            '-q',
+            '-c',
+            max($count, 1),
+            '-p',
+            $interval,
+            '-t',
+            max($timeout, $interval),
+            $host
+        ];
+
+        $process = app()->make(Process::class, ['command' => $cmd]);
+        Log::debug('[FPING] ' . $process->getCommandLine() . PHP_EOL);
+        $process->run();
+        $output = $process->getErrorOutput();
+
+        preg_match('#= (\d+)/(\d+)/(\d+)%(, min/avg/max = ([\d.]+)/([\d.]+)/([\d.]+))?$#', $output, $parsed);
+        [, $xmt, $rcv, $loss, , $min, $avg, $max] = array_pad($parsed, 8, 0);
+
+        if ($loss < 0) {
+            $xmt = 1;
+            $rcv = 1;
+            $loss = 100;
+        }
+
+        $response = [
+            'xmt'  => (int)$xmt,
+            'rcv'  => (int)$rcv,
+            'loss' => (int)$loss,
+            'min'  => (float)$min,
+            'max'  => (float)$max,
+            'avg'  => (float)$avg,
+            'dup'  => substr_count($output, 'duplicate'),
+            'exitcode' => $process->getExitCode(),
+        ];
+        Log::debug('response: ', $response);
+
+        return $response;
+    }
+}