Hadoop Change Host Component State Write Action

Ambari.SCOM.Management.Module.ChangeHostComponentStateWriteAction (WriteActionModuleType)

This module requests Host Component state change and tracks the progress of the request.

Element properties:

Member Modules:

Overrideable Parameters:

Source Code:

<WriteActionModuleType ID="Ambari.SCOM.Management.Module.ChangeHostComponentStateWriteAction" RunAs="HDLibrary!Ambari.SCOM.Profile.Workflow" Accessibility="Internal">

  <Configuration>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="TimeoutSeconds" type="xsd:int"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="TargetState" type="xsd:string"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="StatusPollingIntervalSeconds" type="xsd:int"/>

    <xsd:element xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="OperationFriendlyName" type="xsd:string"/>

  </Configuration>

  <OverrideableParameters>

    <OverrideableParameter ID="TimeoutSeconds" ParameterType="int" Selector="$Config/TimeoutSeconds$"/>

    <OverrideableParameter ID="StatusPollingIntervalSeconds" ParameterType="int" Selector="$Config/StatusPollingIntervalSeconds$"/>

  </OverrideableParameters>

  <ModuleImplementation>

    <Composite>

      <MemberModules>

        <WriteAction ID="Action" TypeID="Ambari.SCOM.Management.Module.BaseChangeStateWriteAction">

          <TimeoutSeconds>$Config/TimeoutSeconds$</TimeoutSeconds>

          <ScriptName>ChangeHostComponentState.ps1</ScriptName>

          <MainScriptBody>## Licensed to the Apache Software Foundation (ASF) under one

## or more contributor license agreements.  See the NOTICE file

## distributed with this work for additional information

## regarding copyright ownership.  The ASF licenses this file

## to you under the Apache License, Version 2.0 (the

## "License"); you may not use this file except in compliance

## with the License.  You may obtain a copy of the License at

##

##     http://www.apache.org/licenses/LICENSE-2.0

##

## Unless required by applicable law or agreed to in writing,

## software distributed under the License is distributed on an

## "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

## KIND, either express or implied.  See the License for the

## specific language governing permissions and limitations

## under the License.



function Main() {

    TraceTaskExecution "Changing Host Component state to $TargetState."



    $response = InvokeRestAPI $MonitoringAmbariUri $Username $Password 'PUT' ('{"RequestInfo":{"context":"' + $OperationFriendlyName + '"},"Body":{"HostRoles":{"state":"' + $TargetState +'"}}}')

    if ($response.StatusCode -eq 200) {

        TraceTaskExecution "Host Component already in $TargetState state."

        return

    }



    if ($response.StatusCode -lt 200 -or $response.StatusCode -ge 300) {

        throw "Failed to change Host Component state."

    }

    

    $response = InvokeRestAPI $response.Body.href $Username $Password

    WaitForTasksCompletion $response.Body.tasks

}

</MainScriptBody>

          <AmbariUri>$Target/Property[Type="HDLibrary!Ambari.SCOM.AmbariManagedEntity"]/AmbariUri$</AmbariUri>

          <TargetState>$Config/TargetState$</TargetState>

          <StatusPollingIntervalSeconds>$Config/StatusPollingIntervalSeconds$</StatusPollingIntervalSeconds>

          <OperationFriendlyName>$Config/OperationFriendlyName$</OperationFriendlyName>

        </WriteAction>

      </MemberModules>

      <Composition>

        <Node ID="Action"/>

      </Composition>

    </Composite>

  </ModuleImplementation>

  <InputType>System!System.BaseData</InputType>

</WriteActionModuleType>