# coding=utf-8
# --------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
#
# Code generated by Microsoft (R) AutoRest Code Generator.
# Changes may cause incorrect behavior and will be lost if the code is
# regenerated.
# --------------------------------------------------------------------------

from msrest.serialization import Model


class PoolUpdatePropertiesParameter(Model):
    """The set of changes to be made to a pool.

    :param start_task: A task to run on each compute node as it joins the
     pool. The task runs when the node is added to the pool or when the node is
     restarted. If this element is present, it overwrites any existing start
     task. If omitted, any existing start task is removed from the pool.
    :type start_task: :class:`StartTask <azure.batch.models.StartTask>`
    :param certificate_references: A list of certificates to be installed on
     each compute node in the pool. This list replaces any existing certificate
     references configured on the pool. If you specify an empty collection, any
     existing certificate references are removed from the pool. For Windows
     compute nodes, the Batch service installs the certificates to the
     specified certificate store and location. For Linux compute nodes, the
     certificates are stored in a directory inside the task working directory
     and an environment variable AZ_BATCH_CERTIFICATES_DIR is supplied to the
     task to query for this location. For certificates with visibility of
     'remoteUser', a 'certs' directory is created in the user's home directory
     (e.g., /home/{user-name}/certs) and certificates are placed in that
     directory.
    :type certificate_references: list of :class:`CertificateReference
     <azure.batch.models.CertificateReference>`
    :param application_package_references: A list of application packages to
     be installed on each compute node in the pool. The list replaces any
     existing application package references on the pool. Changes to
     application package references affect all new compute nodes joining the
     pool, but do not affect compute nodes that are already in the pool until
     they are rebooted or reimaged. If omitted, or if you specify an empty
     collection, any existing application packages references are removed from
     the pool.
    :type application_package_references: list of
     :class:`ApplicationPackageReference
     <azure.batch.models.ApplicationPackageReference>`
    :param metadata: A list of name-value pairs associated with the pool as
     metadata. This list replaces any existing metadata configured on the pool.
     If omitted, or if you specify an empty collection, any existing metadata
     is removed from the pool.
    :type metadata: list of :class:`MetadataItem
     <azure.batch.models.MetadataItem>`
    """

    _validation = {
        'certificate_references': {'required': True},
        'application_package_references': {'required': True},
        'metadata': {'required': True},
    }

    _attribute_map = {
        'start_task': {'key': 'startTask', 'type': 'StartTask'},
        'certificate_references': {'key': 'certificateReferences', 'type': '[CertificateReference]'},
        'application_package_references': {'key': 'applicationPackageReferences', 'type': '[ApplicationPackageReference]'},
        'metadata': {'key': 'metadata', 'type': '[MetadataItem]'},
    }

    def __init__(self, certificate_references, application_package_references, metadata, start_task=None):
        self.start_task = start_task
        self.certificate_references = certificate_references
        self.application_package_references = application_package_references
        self.metadata = metadata
