add script to discover installed jdk

jdk.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python2.7
+# -*- coding: UTF-8 -*-
+
+import re
+import json
+import subprocess
+
+from collections import defaultdict
+
+
+def fetch_java_version():
+    lines = []
+
+    cmd = "java -version"
+    args = cmd.split(" ")
+
+    try:
+        proc = subprocess.check_output(args, stderr=subprocess.STDOUT)
+        proc = proc.splitlines()
+        for line in proc:
+            lines.append(line.rstrip())
+
+    except Exception:
+        raise
+
+    return lines
+
+
+def get_vendor_version():
+    lines = fetch_java_version()
+    line = lines[1].lower()
+    vendor = (line.split()[0]).lower()
+
+    if vendor == "openjdk" and "zulu" in line:
+        exp_jdk = re.compile("(\d(\.\d+){1,}_\d+)")
+        exp_zulu = re.compile("zulu (\d(\.\d+){1,})")
+
+        vendor = "zulu"
+        version = "%s-jdk%s" % (exp_zulu.search(line).group(1), exp_jdk.search(line).group())
+    else:
+        exp = re.compile("(\d(\.\d+){1,})")
+        version = exp.search(line).group()
+
+    return (vendor, version)
+
+
+def main():
+    result = defaultdict(dict)
+
+    try:
+        vendor, version = get_vendor_version()
+        result.update(vendor=vendor)
+        result.update(version=version)
+        result.update(error=False)
+    except Exception as e:
+        result.update(error=True)
+        result.update(message=e.strerror)
+
+    print json.dumps(result)
+
+
+if __name__ == "__main__":
+    main()