add php-getpods source and containerfile

php-getpods/Containerfile

@@ -0,0 +1,3 @@
+FROM registry.redhat.io/ubi8/php-74:latest
+COPY index.php /opt/app-root/src
+CMD /usr/libexec/s2i/run

php-getpods/index.php

@@ -0,0 +1,86 @@
+<p>Hello, world!</p>
+<ul>
+<li/>Hostname is <?= getenv('HOSTNAME') ?> (<?= $_ENV["HOSTNAME"] ?>)
+<li/>Server name is <?= getenv('SERVER_NAME') ?> (<?= $_ENV["SERVER_NAME"] ?>)
+<li/>Namespace is <?= getenv('NAMESPACE') ?> (<?= $_ENV["NAMESPACE"] ?>)
+<li/>Service account name is <?= getenv('ACCOUNT_NAME') ?> (<?= $_ENV["ACCOUNT_NAME"] ?>)
+<li/>Service name is <?= getenv('SERVICE_NAME') ?> (<?= $_ENV["SERVICE_NAME"] ?>)
+<li/>Pod name is <?= getenv('POD_NAME') ?> (<?= $_ENV["POD_NAME"] ?>)
+<li/>Pod IP is <?= getenv('POD_IP') ?> (<?= $_ENV["POD_IP"] ?>)
+<li/>Application label is <code>app=<?= getenv('APP_LABEL') ?></code> (<?= $_ENV["APP_LABEL"] ?>)
+</ul>
+<?php
+	$tfile = "/token/token";
+	if (isset($_ENV['TOKEN_FILE'])) {
+		$tfile = $_ENV['TOKEN_FILE'];
+	}
+	if (!file_exists($tfile)) {
+	    print("<p>Can not read the token file. Exiting.</p>\n");
+	    exit();
+	}
+
+	$token = file_get_contents($tfile);;
+	print("<p>Using token <code>" . $token . "</code>.</p>\n");
+
+	$errors = 0;
+	if (!isset($_ENV["NAMESPACE"])) {
+		print("<p>Namespace variable not set (NAMESPACE).</p>\n");
+		$errors++;
+	}
+	if (!isset($_ENV["APP_LABEL"])) {
+		print("<p>App label variable not set (APP_LABEL).</p>\n");
+		$errors++;
+	}
+	if ($errors == 0) {
+		$cs = curl_init("https://kubernetes.default/api/v1/namespaces/" . $_ENV["NAMESPACE"] . "/pods?labelSelector=app=" . $_ENV["APP_LABEL"]);
+		curl_setopt($cs, CURLOPT_SSL_VERIFYPEER, false);
+		curl_setopt($cs, CURLOPT_RETURNTRANSFER, true);
+		curl_setopt($cs, CURLOPT_HTTPHEADER, [
+			"Authorization: Bearer " . $token,
+			"Accept: application/json"
+			]);
+		$response = curl_exec($cs);
+
+		print("<p>Got pod list response:<p>\n");
+?><code>
+<?= $response ?>
+</code>
+<?php
+	} else {
+		print("<p>Skipping pod list due to errors.</p>\n");
+	}
+	$errors = 0;
+	if (!isset($_ENV["NAMESPACE"])) {
+		print("<p>Namespace variable not set (NAMESPACE).</p>\n");
+		$errors++;
+	}
+	if (!isset($_ENV["SERVICE_NAME"])) {
+		print("<p>Service name variable not set (SERVICE_NAME).</p>\n");
+		$errors++;
+	}
+	if ($errors == 0) {
+		$cs = curl_init("https://kubernetes.default/api/v1/namespaces/" . $_ENV["NAMESPACE"] . "/endpoints/" . $_ENV["SERVICE_NAME"]);
+		curl_setopt($cs, CURLOPT_SSL_VERIFYPEER, false);
+		curl_setopt($cs, CURLOPT_RETURNTRANSFER, true);
+		curl_setopt($cs, CURLOPT_HTTPHEADER, [
+			"Authorization: Bearer " . $token,
+			"Accept: application/json"
+			]);
+		$response = curl_exec($cs);
+		print("<p>Got endpoint list response:<p>\n");
+?><code>
+<?= $response ?>
+</code>
+<?php
+		$dnsrec = dns_get_record($_ENV["SERVICE_NAME"] . "." . $_ENV["NAMESPACE"] . ".svc.cluster.local", DNS_A);
+		if ($dnsrec) {
+			print("<p>Got dns query response:<p>\n<code>\n");
+			var_dump($dnsrec);
+			print("\n</code>\n");
+		} else {
+			print("<p>Could not look up DNS record for service.</p>\n");
+		}
+	} else {
+		print("<p>Skipping service test due to errors.</p>\n");
+	}
+?>