xenadmin/XenAdmin/Wizards/NewSRWizard_Pages/FibreChannelProbeParsing.cs

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using System.Collections.Generic;
using System.Xml;
using XenAPI;

namespace XenAdmin.Wizards.NewSRWizard_Pages
{
    class FibreChannelProbeParsing
    {
        internal static List<FibreChannelDevice> ProcessXML(string p)
        {
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(p);

            var devices = new List<FibreChannelDevice>();

            foreach (XmlNode device in doc.GetElementsByTagName("BlockDevice"))
            {
                var dev = ParseDevice(device);
                devices.Add(dev);
            }
            return devices;
        }

        private static FibreChannelDevice ParseDevice(XmlNode device)
        {
            string vendor = "";
            long size = 0;
            string serial = "";
            string path = "";
            string scsiid = "";
            string adapter = "";
            string channel = "";
            string id = "";
            string lun = "";
            string name_label = "";
            string name_description = "";
            bool pool_metadata_detected = false;
            string eth = "";

            foreach (XmlNode node in device.ChildNodes)
            {
                if (node.Name.ToLowerInvariant() == "vendor")
                    vendor = node.InnerText.Trim();
                if (node.Name.ToLowerInvariant() == "size")
                    size = ParseSizeWithUnits(node.InnerText.Trim());
                if (node.Name.ToLowerInvariant() == "serial")
                    serial = node.InnerText.Trim();
                if (node.Name.ToLowerInvariant() == "path")
                    path = node.InnerText.Trim();
                if (node.Name.ToLowerInvariant() == "scsiid")
                    scsiid = node.InnerText.Trim();
                if (node.Name.ToLowerInvariant() == "adapter")
                    adapter = node.InnerText.Trim();
                if (node.Name.ToLowerInvariant() == "channel")
                    channel = node.InnerText.Trim();
                if (node.Name.ToLowerInvariant() == "id")
                    id = node.InnerText.Trim();
                if (node.Name.ToLowerInvariant() == "lun")
                    lun = node.InnerText.Trim();
                if (node.Name.ToLowerInvariant() == "name_label")
                    name_label = node.InnerText.Trim();
                if (node.Name.ToLowerInvariant() == "name_description")
                    name_description = node.InnerText.Trim();
                if (node.Name.ToLowerInvariant() == "pool_metadata_detected")
                    pool_metadata_detected = bool.Parse(node.InnerText.Trim());
                if (node.Name.ToLowerInvariant() == "eth")
                    eth = node.InnerText.Trim();
            }

            return new FibreChannelDevice(serial, path, vendor, size, 
                scsiid, adapter, channel, id, lun, name_label, name_description, pool_metadata_detected, eth);
        }

        /// <summary>
        /// Sometimes, the XML that is returned contains units.  I think that we're not doing this in
        /// Miami GA.
        /// </summary>
        private static long ParseSizeWithUnits(string p)
        {
            p = p.ToLowerInvariant();

            if (p.Contains("kb"))
            {
                return long.Parse(p.Replace("kb", "")) * Util.BINARY_KILO;
            }
            else if (p.Contains("mb"))
            {
                return long.Parse(p.Replace("mb", "")) * Util.BINARY_MEGA;
            }
            else if (p.Contains("gb"))
            {
                return long.Parse(p.Replace("gb", "")) * Util.BINARY_GIGA;
            }
            else
            {
                return long.Parse(p);
            }
        }

        internal static List<FibreChannelDevice> ProcessProbeExtResult(List<Probe_result> probeExtResult)
        {
            var devices = new List<FibreChannelDevice>();

            foreach (var probeResult in probeExtResult)
            {
                var vendor = probeResult.extra_info.ContainsKey("vendor") ? probeResult.extra_info["vendor"] :"";
                long size; 
                if (!probeResult.extra_info.ContainsKey("size") || !long.TryParse(probeResult.extra_info["size"], out size))
                    size = 0;
                var serial = probeResult.extra_info.ContainsKey("serial") ? probeResult.extra_info["serial"] : "";
                var path = probeResult.extra_info.ContainsKey("path") ? probeResult.extra_info["path"] : "";
                var scsiid = probeResult.configuration.ContainsKey("ScsiId") ? probeResult.configuration["ScsiId"] : "";
                var adapter = probeResult.extra_info.ContainsKey("adapter") ? probeResult.extra_info["adapter"] : "";
                var channel = probeResult.extra_info.ContainsKey("channel") ? probeResult.extra_info["channel"] : "";
                var id = probeResult.extra_info.ContainsKey("id") ? probeResult.extra_info["id"] : "";
                var lun = probeResult.extra_info.ContainsKey("lun") ? probeResult.extra_info["lun"] : "";
                var name_label = "";
                var name_description = "";
                var pool_metadata_detected = false;
                var eth = "";

                devices.Add(new FibreChannelDevice(serial, path, vendor, size, scsiid, adapter, channel, id, lun, name_label, name_description, pool_metadata_detected, eth));

            }

            return devices;
        }
    }
}