Current File : //proc/self/root/lib/python2.7/site-packages/ansible/modules/core/windows/async_wrapper.ps1
#!powershell
# This file is part of Ansible
#
# Copyright (c)2016, Matt Davis
#
# Ansible 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.
#
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
Param(
[string]$jid,
[int]$max_exec_time_sec,
[string]$module_path,
[string]$argfile_path,
[switch]$preserve_tmp
)
# WANT_JSON
# POWERSHELL_COMMON
Set-StrictMode -Version 2
$ErrorActionPreference = "Stop"
Function Start-Watchdog {
Param(
[string]$module_tempdir,
[string]$module_path,
[int]$max_exec_time_sec,
[string]$resultfile_path,
[string]$argfile_path,
[switch]$preserve_tmp,
[switch]$start_suspended
)
# BEGIN Ansible.Async native type definition
$native_process_util = @"
using Microsoft.Win32.SafeHandles;
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
namespace Ansible.Async {
public static class NativeProcessUtil
{
[DllImport("kernel32.dll", SetLastError=true, CharSet=CharSet.Unicode)]
public static extern bool CreateProcess(
string lpApplicationName,
string lpCommandLine,
IntPtr lpProcessAttributes,
IntPtr lpThreadAttributes,
bool bInheritHandles,
uint dwCreationFlags,
IntPtr lpEnvironment,
string lpCurrentDirectory,
[In] ref STARTUPINFO lpStartupInfo,
out PROCESS_INFORMATION lpProcessInformation);
[DllImport("kernel32.dll", SetLastError = true, CharSet=CharSet.Unicode)]
public static extern uint SearchPath (
string lpPath,
string lpFileName,
string lpExtension,
int nBufferLength,
[MarshalAs (UnmanagedType.LPTStr)]
StringBuilder lpBuffer,
out IntPtr lpFilePart);
public static string SearchPath(string findThis)
{
StringBuilder sbOut = new StringBuilder(1024);
IntPtr filePartOut;
if(SearchPath(null, findThis, null, sbOut.Capacity, sbOut, out filePartOut) == 0)
throw new FileNotFoundException("Couldn't locate " + findThis + " on path");
return sbOut.ToString();
}
[DllImport("kernel32.dll", SetLastError=true)]
static extern SafeFileHandle OpenThread(
ThreadAccessRights dwDesiredAccess,
bool bInheritHandle,
int dwThreadId);
[DllImport("kernel32.dll", SetLastError=true)]
static extern int ResumeThread(SafeHandle hThread);
public static void ResumeThreadById(int threadId)
{
var threadHandle = OpenThread(ThreadAccessRights.SUSPEND_RESUME, false, threadId);
if(threadHandle.IsInvalid)
throw new Exception(String.Format("Thread ID {0} is invalid ({1})", threadId, new Win32Exception(Marshal.GetLastWin32Error()).Message));
try
{
if(ResumeThread(threadHandle) == -1)
throw new Exception(String.Format("Thread ID {0} cannot be resumed ({1})", threadId, new Win32Exception(Marshal.GetLastWin32Error()).Message));
}
finally
{
threadHandle.Dispose();
}
}
public static void ResumeProcessById(int pid)
{
var proc = Process.GetProcessById(pid);
// wait for at least one suspended thread in the process (this handles possible slow startup race where primary thread of created-suspended process has not yet become runnable)
var retryCount = 0;
while(!proc.Threads.OfType<ProcessThread>().Any(t=>t.ThreadState == System.Diagnostics.ThreadState.Wait && t.WaitReason == ThreadWaitReason.Suspended))
{
proc.Refresh();
Thread.Sleep(50);
if (retryCount > 100)
throw new InvalidOperationException(String.Format("No threads were suspended in target PID {0} after 5s", pid));
}
foreach(var thread in proc.Threads.OfType<ProcessThread>().Where(t => t.ThreadState == System.Diagnostics.ThreadState.Wait && t.WaitReason == ThreadWaitReason.Suspended))
ResumeThreadById(thread.Id);
}
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct STARTUPINFO
{
public Int32 cb;
public string lpReserved;
public string lpDesktop;
public string lpTitle;
public Int32 dwX;
public Int32 dwY;
public Int32 dwXSize;
public Int32 dwYSize;
public Int32 dwXCountChars;
public Int32 dwYCountChars;
public Int32 dwFillAttribute;
public Int32 dwFlags;
public Int16 wShowWindow;
public Int16 cbReserved2;
public IntPtr lpReserved2;
public IntPtr hStdInput;
public IntPtr hStdOutput;
public IntPtr hStdError;
}
[StructLayout(LayoutKind.Sequential)]
public struct PROCESS_INFORMATION
{
public IntPtr hProcess;
public IntPtr hThread;
public int dwProcessId;
public int dwThreadId;
}
[Flags]
enum ThreadAccessRights : uint
{
SUSPEND_RESUME = 0x0002
}
}
"@ # END Ansible.Async native type definition
Add-Type -TypeDefinition $native_process_util
$watchdog_script = {
Set-StrictMode -Version 2
$ErrorActionPreference = "Stop"
Function Log {
Param(
[string]$msg
)
If(Get-Variable -Name log_path -ErrorAction SilentlyContinue) {
Add-Content $log_path $msg
}
}
Add-Type -AssemblyName System.Web.Extensions
# -EncodedCommand won't allow us to pass args, so they have to be templated into the script
$jsonargs = @"
<<JSONARGS>>
"@
Function Deserialize-Json {
Param(
[Parameter(ValueFromPipeline=$true)]
[string]$json
)
# FUTURE: move this into module_utils/powershell.ps1 and use for everything (sidestep PSCustomObject issues)
# FUTURE: won't work w/ Nano Server/.NET Core- fallback to DataContractJsonSerializer (which can't handle dicts on .NET 4.0)
Log "Deserializing:`n$json"
$jss = New-Object System.Web.Script.Serialization.JavaScriptSerializer
return $jss.DeserializeObject($json)
}
Function Write-Result {
[hashtable]$result,
[string]$resultfile_path
$result | ConvertTo-Json | Set-Content -Path $resultfile_path
}
Function Exec-Module {
Param(
[string]$module_tempdir,
[string]$module_path,
[int]$max_exec_time_sec,
[string]$resultfile_path,
[string]$argfile_path,
[switch]$preserve_tmp
)
Log "in watchdog exec"
Try
{
Log "deserializing existing resultfile args"
# read in existing resultsfile to merge w/ module output (it should be written by the time we're unsuspended and running)
$result = Get-Content $resultfile_path -Raw | Deserialize-Json
Log "deserialized result is $($result | Out-String)"
Log "creating runspace"
$rs = [runspacefactory]::CreateRunspace()
$rs.Open()
$rs.SessionStateProxy.Path.SetLocation($module_tempdir) | Out-Null
Log "creating Powershell object"
$job = [powershell]::Create()
$job.Runspace = $rs
Log "adding scripts"
if($module_path.EndsWith(".ps1")) {
$job.AddScript($module_path) | Out-Null
}
else {
$job.AddCommand($module_path) | Out-Null
$job.AddArgument($argfile_path) | Out-Null
}
Log "job BeginInvoke()"
$job_asyncresult = $job.BeginInvoke()
Log "waiting $max_exec_time_sec seconds for job to complete"
$signaled = $job_asyncresult.AsyncWaitHandle.WaitOne($max_exec_time_sec * 1000)
$result["finished"] = 1
If($job_asyncresult.IsCompleted) {
Log "job completed, calling EndInvoke()"
$job_output = $job.EndInvoke($job_asyncresult)
$job_error = $job.Streams.Error
Log "raw module stdout: \r\n$job_output"
If($job_error) {
Log "raw module stderr: \r\n$job_error"
}
# write success/output/error to result object
# TODO: cleanse leading/trailing junk
Try {
$module_result = Deserialize-Json $job_output
# TODO: check for conflicting keys
$result = $result + $module_result
}
Catch {
$excep = $_
$result.failed = $true
$result.msg = "failed to parse module output: $excep"
}
# TODO: determine success/fail, or always include stderr if nonempty?
Write-Result $result $resultfile_path
Log "wrote output to $resultfile_path"
}
Else {
$job.Stop()
# write timeout to result object
$result.failed = $true
$result.msg = "timed out waiting for module completion"
Write-Result $result $resultfile_path
Log "wrote timeout to $resultfile_path"
}
$rs.Close() | Out-Null
}
Catch {
$excep = $_
$result = @{failed=$true; msg="module execution failed: $($excep.ToString())`n$($excep.InvocationInfo.PositionMessage)"}
Write-Result $result $resultfile_path
}
Finally
{
If(-not $preserve_tmp -and $module_tempdir -imatch "-tmp-") {
Try {
Log "deleting tempdir, cwd is $(Get-Location)"
Set-Location $env:USERPROFILE
$res = Remove-Item $module_tempdir -recurse 2>&1
Log "delete output was $res"
}
Catch {
$excep = $_
Log "error deleting tempdir: $excep"
}
}
Else {
Log "skipping tempdir deletion"
}
}
}
Try {
Log "deserializing args"
# deserialize the JSON args that should've been templated in before execution
$ext_args = Deserialize-Json $jsonargs
Log "exec module"
Exec-Module @ext_args
Log "exec done"
}
Catch {
$excep = $_
Log $excep
}
}
$bp = [hashtable] $MyInvocation.BoundParameters
# convert switch types to bool so they'll serialize as simple bools
$bp["preserve_tmp"] = [bool]$bp["preserve_tmp"]
$bp["start_suspended"] = [bool]$bp["start_suspended"]
# serialize this function's args to JSON so we can template them verbatim into the script(block)
$jsonargs = $bp | ConvertTo-Json
$raw_script = $watchdog_script.ToString()
$raw_script = $raw_script.Replace("<<JSONARGS>>", $jsonargs)
$encoded_command = [Convert]::ToBase64String([System.Text.Encoding]::Unicode.GetBytes($raw_script))
# FUTURE: create under new job to ensure all children die on exit?
# FUTURE: move these flags into C# enum
# start process suspended + breakaway so we can record the watchdog pid without worrying about a completion race
Set-Variable CREATE_BREAKAWAY_FROM_JOB -Value ([uint32]0x01000000) -Option Constant
Set-Variable CREATE_SUSPENDED -Value ([uint32]0x00000004) -Option Constant
Set-Variable CREATE_UNICODE_ENVIRONMENT -Value ([uint32]0x000000400) -Option Constant
Set-Variable CREATE_NEW_CONSOLE -Value ([uint32]0x00000010) -Option Constant
$pstartup_flags = $CREATE_BREAKAWAY_FROM_JOB -bor $CREATE_UNICODE_ENVIRONMENT -bor $CREATE_NEW_CONSOLE
If($start_suspended) {
$pstartup_flags = $pstartup_flags -bor $CREATE_SUSPENDED
}
# execute the dynamic watchdog as a breakway process, which will in turn exec the module
$si = New-Object Ansible.Async.STARTUPINFO
$si.cb = [System.Runtime.InteropServices.Marshal]::SizeOf([type][Ansible.Async.STARTUPINFO])
$pi = New-Object Ansible.Async.PROCESS_INFORMATION
# FUTURE: direct cmdline CreateProcess path lookup fails- this works but is sub-optimal
$exec_cmd = [Ansible.Async.NativeProcessUtil]::SearchPath("powershell.exe")
$exec_args = "`"$exec_cmd`" -NoProfile -ExecutionPolicy Bypass -EncodedCommand $encoded_command"
If(-not [Ansible.Async.NativeProcessUtil]::CreateProcess($exec_cmd, $exec_args, [IntPtr]::Zero, [IntPtr]::Zero, $false, $pstartup_flags, [IntPtr]::Zero, $env:windir, [ref]$si, [ref]$pi)) {
#throw New-Object System.ComponentModel.Win32Exception
throw "create bang $([System.Runtime.InteropServices.Marshal]::GetLastWin32Error())"
}
$watchdog_pid = $pi.dwProcessId
return $watchdog_pid
}
$local_jid = $jid + "." + $pid
$results_path = [System.IO.Path]::Combine($env:LOCALAPPDATA, ".ansible_async", $local_jid)
[System.IO.Directory]::CreateDirectory([System.IO.Path]::GetDirectoryName($results_path)) | Out-Null
$watchdog_args = @{
module_tempdir=$([System.IO.Path]::GetDirectoryName($module_path));
module_path=$module_path;
max_exec_time_sec=$max_exec_time_sec;
resultfile_path=$results_path;
argfile_path=$argfile_path;
start_suspended=$true;
}
If($preserve_tmp) {
$watchdog_args["preserve_tmp"] = $true
}
# start watchdog/module-exec
$watchdog_pid = Start-Watchdog @watchdog_args
# populate initial results before we resume the process to avoid result race
$result = @{
started=1;
finished=0;
results_file=$results_path;
ansible_job_id=$local_jid;
_suppress_tmpdir_delete=$true;
ansible_async_watchdog_pid=$watchdog_pid
}
$result_json = ConvertTo-Json $result
Set-Content $results_path -Value $result_json
[Ansible.Async.NativeProcessUtil]::ResumeProcessById($watchdog_pid)
return $result_json
Mini Shell