xenadmin/XenModel/ServerDBs/SimulatorWebStream.cs
Mihaela Stoica bd36a85bff CP-4816: Initial commit to git repo
Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
2013-06-24 12:41:48 +01:00

336 lines
9.8 KiB
C#

/* Copyright (c) Citrix Systems Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* * Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
using XenAPI;
using XenAdmin.ServerDBs.FakeAPI;
namespace XenAdmin.ServerDBs
{
public class SimulatorWebStream : Stream
{
// might be null
private SimulatorWebProxy simProxy;
private Uri Url;
private long position;
private long Start;
private bool CycleResponse = true;
private string HttpResponse = " \n";
public SimulatorWebStream(Uri url, IWebProxy proxy)
{
simProxy = proxy as SimulatorWebProxy;
Url = url;
}
public override bool CanRead
{
get { return true; }
}
public override bool CanSeek
{
get { return false; }
}
public override bool CanWrite
{
get { return true; }
}
public override void Flush()
{
}
public override long Length
{
get
{
return HttpResponse.Length;
}
}
public override long Position
{
get
{
return position;
}
set
{
position = value;
}
}
public override int Read(byte[] buffer, int offset, int count)
{
for (int i = offset; i < count; i++)
{
if (position >= HttpResponse.Length)
{
if (CycleResponse)
position = Start;
else
{
buffer[i] = unchecked((byte)-1);
return i - offset;
}
}
buffer[i] = (byte)HttpResponse[(int)position++];
}
return count;
}
public override long Seek(long offset, SeekOrigin origin)
{
position += offset;
return position;
}
public override void SetLength(long value)
{
}
public override void Write(byte[] buffer, int offset, int count)
{
StringBuilder builder = new StringBuilder();
for (int i = offset; i < count; i++)
builder.Append((char)buffer[i]);
ParseHttpHeader(builder.ToString());
}
private void ParseHttpHeader(string header)
{
string[] cmds = header.Split(' ');
if (cmds.Length < 1)
return;
switch (cmds[0])
{
case "PUT":
case "GET":
case "CONNECT":
break;
default:
return;
}
if (cmds.Length < 2)
return;
string[] param = cmds[1].Split('?');
if (param.Length < 1)
return;
Dictionary<string, string> query = param.Length > 1 ? ParseQuery(param[1]) : new Dictionary<string, string>();
Position = 0;
Start = 0;
CycleResponse = false;
switch (param[0])
{
case "/pool_patch_upload":
CycleResponse = true;
HttpResponse = "HTTP 200 simulator\n \n";
PoolPatchUpload(query);
break;
case "/rrd_updates":
string host_ref = HostRef();
string uuid = (string)simProxy.proxy.db.GetValue("host", host_ref, "uuid");
HttpResponse = string.Format(@"HTTP 200 simulator
<xport>
<meta>
<start>0</start>
<step>5</step>
<end>0</end>
<rows>1</rows>
<columns>1</columns>
<legend>
<entry>AVERAGE:host:{0}:cpu0</entry>
</legend>
</meta>
<data>
<row>
<t>{1}</t>
<v>{2}</v>
</row>
</data>
</xport>", uuid, (long)(new TimeSpan(DateTime.Now.Ticks - new DateTime(1970, 1, 1).Ticks).TotalSeconds), CpuStatsForHost(host_ref));
break;
case "/console":
StringBuilder response = GetConsoleResponse();
if (response != null)
{
CycleResponse = true;
Start = response.Length;
response.Append(WriteFlag(false));
HttpResponse = response.ToString();
}
else
{
HttpResponse = " \n";
}
break;
case "/host_backup":
HttpResponse = "HTTP 200 simulator\n \n" + header;
break;
default:
//Support for export
if (param[0].StartsWith("/%3Fsession_id="))
{
HttpResponse = GetVMExportResponse();
}
else
HttpResponse = " \n";
break;
}
}
protected virtual string GetVMExportResponse()
{
return null;
}
protected virtual StringBuilder GetConsoleResponse()
{
return null;
}
protected string WriteCard32(int p)
{
byte[] bytes = BitConverter.GetBytes(p);
Array.Reverse(bytes);
StringBuilder builder = new StringBuilder();
foreach (byte b in bytes)
{
builder.Append((char)b);
}
return builder.ToString();
}
protected string WriteCard16(short p)
{
byte[] bytes = BitConverter.GetBytes(p);
Array.Reverse(bytes);
StringBuilder builder = new StringBuilder();
foreach (byte b in bytes)
{
builder.Append((char)b);
}
return builder.ToString();
}
protected string WriteCard8(byte p)
{
return ((char)p).ToString();
}
protected string WriteFlag(bool p)
{
return p ? ((char)1).ToString() : ((char)0).ToString();
}
protected string WriteString(string p)
{
return string.Format("{0}{1}", WriteCard32(p.Length), p);
}
private string HostRef()
{
return simProxy.proxy.db.ObjectWithFieldValue("host", "address", Url.Host);
}
Random rand = new Random();
private double CpuStatsForHost(string host_ref)
{
switch (host_ref)
{
// hack for ExpectedResults search test
case "OpaqueRef:d3a48ddc-8261-33df-64b2-1309e98b395d":
return rand.Next(0, 49)/100d;
case "OpaqueRef:83b5a7dc-4eae-ba93-f9ca-53ef5a664814":
return rand.Next(50, 100)/100d;
default:
return rand.Next(0, 100)/100d;
}
}
private void PoolPatchUpload(Dictionary<string, string> query)
{
string task_ref = query["task_id"];
string session_id = query["session_id"];
Proxy_Task task = simProxy.proxy.GetTask(task_ref);
Proxy_Pool_patch patch = new Proxy_Pool_patch();
patch.after_apply_guidance = new string[] { "unknown" };
patch.name_label = "fake-patch";
patch.name_description = "";
patch.size = "0";
patch.uuid = Guid.NewGuid().ToString();
patch.version = "1.0";
task.result = new fakePool_Patch(simProxy.proxy).create(session_id, patch).Value;
task.finished = DateTime.Now;
task.status = "success";
}
private Dictionary<string, string> ParseQuery(string query)
{
Dictionary<string, string> dict = new Dictionary<string, string>();
foreach (string q in query.Split('&'))
{
string[] var = q.Split('=');
dict[var[0]] = var[1];
}
return dict;
}
}
}