win_iis_webapppool module, fixes and improvement (#20680)

* fixes and improvments for win_iis_webapppool module

* fixes following review feedback on win_iis_webapppool

* Fixed a too-long line in win_iis_webapppool documentation.

* Fixed trailing whitespace for pep8 compliance in documentation win_iis_webapppool.py

* fixed bracket bug

* module parameter attributes now populated.  Switched to hashtable for result object.  Removed remaining ; statement terminators.

* Remove example that was causing CI check failure

lib/ansible/modules/windows/win_iis_webapppool.ps1

@@ -20,42 +20,40 @@
 
 # WANT_JSON
 # POWERSHELL_COMMON
-
-$params = Parse-Args $args;
+$params = Parse-Args $args
 
 # Name parameter
-$name = Get-Attr $params "name" $FALSE;
-If ($name -eq $FALSE) {
-    Fail-Json (New-Object psobject) "missing required argument: name";
-}
+$name = Get-AnsibleParam -obj $params -name "name" -type "string" -failifempty $true
+
 
 # State parameter
-$state = Get-Attr $params "state" $FALSE;
-$valid_states = ('started', 'restarted', 'stopped', 'absent');
-If (($state -Ne $FALSE) -And ($state -NotIn $valid_states)) {
-  Fail-Json $result "state is '$state'; must be $($valid_states)"
-}
+$state = Get-AnsibleParam -obj $params -name "state" -default "present" -validateSet "started","restarted","stopped","absent"
 
 # Attributes parameter - Pipe separated list of attributes where
 # keys and values are separated by comma (paramA:valyeA|paramB:valueB)
 $attributes = @{};
 If (Get-Member -InputObject $params -Name attributes) {
   $params.attributes -split '\|' | foreach {
-    $key, $value = $_ -split "\:";
-    $attributes.Add($key, $value);
+    $key, $value = $_ -split "\:"
+    $attributes.Add($key, $value)
   }
 }
 
 # Ensure WebAdministration module is loaded
 if ((Get-Module "WebAdministration" -ErrorAction SilentlyContinue) -eq $NULL){
   Import-Module WebAdministration
+  $web_admin_dll_path = Join-Path $env:SystemRoot system32\inetsrv\Microsoft.Web.Administration.dll 
+  Add-Type -Path $web_admin_dll_path
+  $t = [Type]"Microsoft.Web.Administration.ApplicationPool"
 }
 
 # Result
-$result = New-Object psobject @{
+$result = @{
   changed = $FALSE
-  attributes = $attributes
-};
+#  attributes = $attributes
+}
+
+$result.attributes = $attributes
 
 # Get pool
 $pool = Get-Item IIS:\AppPools\$name
@@ -77,9 +75,15 @@ try {
   if($pool) {
     # Set properties
     $attributes.GetEnumerator() | foreach {
-      $newParameter = $_;
+      $newParameter = $_
       $currentParameter = Get-ItemProperty ("IIS:\AppPools\" + $name) $newParameter.Key
-      if(-not $currentParameter -or ($currentParameter.Value -as [String]) -ne $newParameter.Value) {
+      $currentParamVal = ""
+      try {
+        $currentParamVal = $currentParameter
+      } catch {
+        $currentParamVal = $currentParameter.Value
+      }
+      if(-not $currentParamVal -or ($currentParamVal -as [String]) -ne $newParameter.Value) {
         Set-ItemProperty ("IIS:\AppPools\" + $name) $newParameter.Key $newParameter.Value
         $result.changed = $TRUE
       }
@@ -90,17 +94,17 @@ try {
       Stop-WebAppPool -Name $name -ErrorAction Stop
       $result.changed = $TRUE
     }
-    if ((($state -eq 'started') -and ($pool.State -eq 'Stopped'))) {
+    if (($state -eq 'started') -and ($pool.State -eq 'Stopped')) {
       Start-WebAppPool -Name $name -ErrorAction Stop
       $result.changed = $TRUE
     }
     if ($state -eq 'restarted') {
-      switch ($pool.State)
-        { 
-          'Stopped' { Start-WebAppPool -Name $name -ErrorAction Stop }
-          default { Restart-WebAppPool -Name $name -ErrorAction Stop }
-        }
-      $result.changed = $TRUE   
+     switch ($pool.State)
+       { 
+         'Stopped' { Start-WebAppPool -Name $name -ErrorAction Stop }
+         default { Restart-WebAppPool -Name $name -ErrorAction Stop }
+       }
+     $result.changed = $TRUE   
     }
   }
 } catch {
@@ -114,10 +118,22 @@ if ($pool)
   $result.info = @{
     name = $pool.Name
     state = $pool.State
-    attributes =  New-Object psobject @{}
+    attributes =  @{}
   };
 
-  $pool.Attributes | ForEach { $result.info.attributes.Add($_.Name, $_.Value)};
+  $pool.Attributes | ForEach {
+     # lookup name if enum
+     if ($_.Schema.Type -eq 'enum') {
+        $propertyName = $_.Name.Substring(0,1).ToUpper() + $_.Name.Substring(1)
+        $enum = [Microsoft.Web.Administration.ApplicationPool].GetProperty($propertyName).PropertyType.FullName
+        $enum_names = [Enum]::GetNames($enum)
+        $result.info.attributes.Add($_.Name, $enum_names[$_.Value])
+     } else {
+        $result.info.attributes.Add($_.Name, $_.Value);
+     }
+  }
+
 }
 
 Exit-Json $result
+

lib/ansible/modules/windows/win_iis_webapppool.py

@@ -18,22 +18,22 @@
 # You should have received a copy of the GNU General Public License
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 
-
 ANSIBLE_METADATA = {'status': ['preview'],
                     'supported_by': 'community',
                     'version': '1.0'}
 
+
 DOCUMENTATION = r'''
 ---
 module: win_iis_webapppool
 version_added: "2.0"
-short_description: Configures a IIS Web Application Pool.
+short_description: Configures an IIS Web Application Pool.
 description:
-     - Creates, Removes and configures a IIS Web Application Pool
+     - Creates, Removes and configures an IIS Web Application Pool
 options:
   name:
     description:
-      - Names of application pool
+      - Name of application pool
     required: true
     default: null
     aliases: []
@@ -47,51 +47,107 @@ options:
       - restarted
     required: false
     default: null
-    aliases: []
   attributes:
     description:
-      - Application Pool attributes from string where attributes are separated by a pipe and attribute name/values by colon Ex. "foo:1|bar:2"
+      - Application Pool attributes from string where attributes are separated by a pipe and attribute name/values by colon Ex. "foo:1|bar:2".
+      - The following attributes may only have the following names.
+      - managedPipelineMode may be either "Integrated" or  "Classic".
+      - startMode may be either "OnDemand" or  "AlwaysRunning".
+      - state may be one of "Starting", "Started", "Stopping", "Stopped", "Unknown".
+        Use the C(state) module parameter to modify, states shown are reflect the possible runtime values.
     required: false
     default: null
-    aliases: []
 author: Henrik Wallström
 '''
 
 EXAMPLES = r'''
-- name: Return information about an existing application pool
+- name: return information about an existing application pool
   win_iis_webapppool:
     name: DefaultAppPool
 
-- name: Ensure AppPool is started
+- name: Create a new application pool in 'Started' state
   win_iis_webapppool:
     name: AppPool
     state: started
 
-- name: Ensure AppPool is stopped
+- name: Stop an application pool
   win_iis_webapppool:
     name: AppPool
     state: stopped
 
-- name: Restart AppPool
+- name: Restart an application pool
   win_iis_webapppool:
     name: AppPool
     state: restart
 
-- name: Change application pool attributes without touching state
+- name: Changes application pool attributes without touching state
   win_iis_webapppool:
     name: AppPool
-    attributes: managedRuntimeVersion:v4.0|autoStart:false
+    attributes: 'managedRuntimeVersion:v4.0|autoStart:false'
 
-- name: Create AnotherAppPool and start it using .NET 4.0 and disabling autostart
+- name: Creates an application pool and sets attributes
   win_iis_webapppool:
     name: AnotherAppPool
     state: started
-    attributes: managedRuntimeVersion:v4.0|autoStart:false
+    attributes: 'managedRuntimeVersion:v4.0|autoStart:false'
 
-- name: Create AppPool and start it using .NET 4.0
+# Playbook example
+---
+
+- name: App Pool with .NET 4.0
   win_iis_webapppool:
-    name: AppPool
+    name: 'AppPool'
     state: started
     attributes: managedRuntimeVersion:v4.0
   register: webapppool
+
 '''
+
+RETURN = '''
+attributes:
+  description:
+    - Application Pool attributes from that were processed by this module invocation.
+  returned: success
+  type: dictionary
+  sample:
+     "enable32BitAppOnWin64": "true"
+     "managedRuntimeVersion": "v4.0"
+     "managedPipelineMode": "Classic"
+info:
+  description: Information on current state of the Application Pool
+  returned: success
+  type: dictionary
+  sample:
+  contains:
+    attributes:
+      description: key value pairs showing the current Application Pool attributes
+      returned: success
+      type: dictionary
+      sample:
+            "autoStart": true
+            "managedRuntimeLoader": "webengine4.dll"
+            "managedPipelineMode": "Classic"
+            "name": "DefaultAppPool"
+            "CLRConfigFile": ""
+            "passAnonymousToken": true
+            "applicationPoolSid": "S-1-5-82-1352790163-598702362-1775843902-1923651883-1762956711"
+            "queueLength": 1000
+            "managedRuntimeVersion": "v4.0"
+            "state": "Started"
+            "enableConfigurationOverride": true
+            "startMode": "OnDemand"
+            "enable32BitAppOnWin64": true
+    name:
+      description:
+        - Name of Application Pool that was processed by this module invocation.
+      returned: success
+      type: string
+      sample: "DefaultAppPool"
+    state:
+      description:
+        - Current runtime state of the pool as the module completed.
+      returned: success
+      type: string
+      sample: "Started"
+'''
+