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<h1><a href="pubsub_v1.html">Cloud Pub/Sub API</a> . <a href="pubsub_v1.projects.html">projects</a> . <a href="pubsub_v1.projects.topics.html">topics</a></h1>
<h2>Instance Methods</h2>
<p class="toc_element">
  <code><a href="pubsub_v1.projects.topics.snapshots.html">snapshots()</a></code>
</p>
<p class="firstline">Returns the snapshots Resource.</p>

<p class="toc_element">
  <code><a href="pubsub_v1.projects.topics.subscriptions.html">subscriptions()</a></code>
</p>
<p class="firstline">Returns the subscriptions Resource.</p>

<p class="toc_element">
  <code><a href="#close">close()</a></code></p>
<p class="firstline">Close httplib2 connections.</p>
<p class="toc_element">
  <code><a href="#create">create(name, body=None, x__xgafv=None)</a></code></p>
<p class="firstline">Creates the given topic with the given name. See the [resource name rules] (https://cloud.google.com/pubsub/docs/admin#resource_names).</p>
<p class="toc_element">
  <code><a href="#delete">delete(topic, x__xgafv=None)</a></code></p>
<p class="firstline">Deletes the topic with the given name. Returns `NOT_FOUND` if the topic does not exist. After a topic is deleted, a new topic may be created with the same name; this is an entirely new topic with none of the old configuration or subscriptions. Existing subscriptions to this topic are not deleted, but their `topic` field is set to `_deleted-topic_`.</p>
<p class="toc_element">
  <code><a href="#get">get(topic, x__xgafv=None)</a></code></p>
<p class="firstline">Gets the configuration of a topic.</p>
<p class="toc_element">
  <code><a href="#getIamPolicy">getIamPolicy(resource, options_requestedPolicyVersion=None, x__xgafv=None)</a></code></p>
<p class="firstline">Gets the access control policy for a resource. Returns an empty policy if the resource exists and does not have a policy set.</p>
<p class="toc_element">
  <code><a href="#list">list(project, pageToken=None, pageSize=None, x__xgafv=None)</a></code></p>
<p class="firstline">Lists matching topics.</p>
<p class="toc_element">
  <code><a href="#list_next">list_next(previous_request, previous_response)</a></code></p>
<p class="firstline">Retrieves the next page of results.</p>
<p class="toc_element">
  <code><a href="#patch">patch(name, body=None, x__xgafv=None)</a></code></p>
<p class="firstline">Updates an existing topic. Note that certain properties of a topic are not modifiable.</p>
<p class="toc_element">
  <code><a href="#publish">publish(topic, body=None, x__xgafv=None)</a></code></p>
<p class="firstline">Adds one or more messages to the topic. Returns `NOT_FOUND` if the topic does not exist.</p>
<p class="toc_element">
  <code><a href="#setIamPolicy">setIamPolicy(resource, body=None, x__xgafv=None)</a></code></p>
<p class="firstline">Sets the access control policy on the specified resource. Replaces any existing policy. Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.</p>
<p class="toc_element">
  <code><a href="#testIamPermissions">testIamPermissions(resource, body=None, x__xgafv=None)</a></code></p>
<p class="firstline">Returns permissions that a caller has on the specified resource. If the resource does not exist, this will return an empty set of permissions, not a `NOT_FOUND` error. Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may "fail open" without warning.</p>
<h3>Method Details</h3>
<div class="method">
    <code class="details" id="close">close()</code>
  <pre>Close httplib2 connections.</pre>
</div>

<div class="method">
    <code class="details" id="create">create(name, body=None, x__xgafv=None)</code>
  <pre>Creates the given topic with the given name. See the [resource name rules] (https://cloud.google.com/pubsub/docs/admin#resource_names).

Args:
  name: string, Required. The name of the topic. It must have the format `&quot;projects/{project}/topics/{topic}&quot;`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `&quot;goog&quot;`. (required)
  body: object, The request body.
    The object takes the form of:

{ # A topic resource.
    &quot;messageStoragePolicy&quot;: { # A policy constraining the storage of messages published to the topic. # Policy constraining the set of Google Cloud Platform regions where messages published to the topic may be stored. If not present, then no constraints are in effect.
      &quot;allowedPersistenceRegions&quot;: [ # A list of IDs of GCP regions where messages that are published to the topic may be persisted in storage. Messages published by publishers running in non-allowed GCP regions (or running outside of GCP altogether) will be routed for storage in one of the allowed regions. An empty list means that no regions are allowed, and is not a valid configuration.
        &quot;A String&quot;,
      ],
    },
    &quot;kmsKeyName&quot;: &quot;A String&quot;, # The resource name of the Cloud KMS CryptoKey to be used to protect access to messages published on this topic. The expected format is `projects/*/locations/*/keyRings/*/cryptoKeys/*`.
    &quot;name&quot;: &quot;A String&quot;, # Required. The name of the topic. It must have the format `&quot;projects/{project}/topics/{topic}&quot;`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `&quot;goog&quot;`.
    &quot;labels&quot;: { # See [Creating and managing labels] (https://cloud.google.com/pubsub/docs/labels).
      &quot;a_key&quot;: &quot;A String&quot;,
    },
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # A topic resource.
      &quot;messageStoragePolicy&quot;: { # A policy constraining the storage of messages published to the topic. # Policy constraining the set of Google Cloud Platform regions where messages published to the topic may be stored. If not present, then no constraints are in effect.
        &quot;allowedPersistenceRegions&quot;: [ # A list of IDs of GCP regions where messages that are published to the topic may be persisted in storage. Messages published by publishers running in non-allowed GCP regions (or running outside of GCP altogether) will be routed for storage in one of the allowed regions. An empty list means that no regions are allowed, and is not a valid configuration.
          &quot;A String&quot;,
        ],
      },
      &quot;kmsKeyName&quot;: &quot;A String&quot;, # The resource name of the Cloud KMS CryptoKey to be used to protect access to messages published on this topic. The expected format is `projects/*/locations/*/keyRings/*/cryptoKeys/*`.
      &quot;name&quot;: &quot;A String&quot;, # Required. The name of the topic. It must have the format `&quot;projects/{project}/topics/{topic}&quot;`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `&quot;goog&quot;`.
      &quot;labels&quot;: { # See [Creating and managing labels] (https://cloud.google.com/pubsub/docs/labels).
        &quot;a_key&quot;: &quot;A String&quot;,
      },
    }</pre>
</div>

<div class="method">
    <code class="details" id="delete">delete(topic, x__xgafv=None)</code>
  <pre>Deletes the topic with the given name. Returns `NOT_FOUND` if the topic does not exist. After a topic is deleted, a new topic may be created with the same name; this is an entirely new topic with none of the old configuration or subscriptions. Existing subscriptions to this topic are not deleted, but their `topic` field is set to `_deleted-topic_`.

Args:
  topic: string, Required. Name of the topic to delete. Format is `projects/{project}/topics/{topic}`. (required)
  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # A generic empty message that you can re-use to avoid defining duplicated empty messages in your APIs. A typical example is to use it as the request or the response type of an API method. For instance: service Foo { rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty); } The JSON representation for `Empty` is empty JSON object `{}`.
  }</pre>
</div>

<div class="method">
    <code class="details" id="get">get(topic, x__xgafv=None)</code>
  <pre>Gets the configuration of a topic.

Args:
  topic: string, Required. The name of the topic to get. Format is `projects/{project}/topics/{topic}`. (required)
  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # A topic resource.
      &quot;messageStoragePolicy&quot;: { # A policy constraining the storage of messages published to the topic. # Policy constraining the set of Google Cloud Platform regions where messages published to the topic may be stored. If not present, then no constraints are in effect.
        &quot;allowedPersistenceRegions&quot;: [ # A list of IDs of GCP regions where messages that are published to the topic may be persisted in storage. Messages published by publishers running in non-allowed GCP regions (or running outside of GCP altogether) will be routed for storage in one of the allowed regions. An empty list means that no regions are allowed, and is not a valid configuration.
          &quot;A String&quot;,
        ],
      },
      &quot;kmsKeyName&quot;: &quot;A String&quot;, # The resource name of the Cloud KMS CryptoKey to be used to protect access to messages published on this topic. The expected format is `projects/*/locations/*/keyRings/*/cryptoKeys/*`.
      &quot;name&quot;: &quot;A String&quot;, # Required. The name of the topic. It must have the format `&quot;projects/{project}/topics/{topic}&quot;`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `&quot;goog&quot;`.
      &quot;labels&quot;: { # See [Creating and managing labels] (https://cloud.google.com/pubsub/docs/labels).
        &quot;a_key&quot;: &quot;A String&quot;,
      },
    }</pre>
</div>

<div class="method">
    <code class="details" id="getIamPolicy">getIamPolicy(resource, options_requestedPolicyVersion=None, x__xgafv=None)</code>
  <pre>Gets the access control policy for a resource. Returns an empty policy if the resource exists and does not have a policy set.

Args:
  resource: string, REQUIRED: The resource for which the policy is being requested. See the operation documentation for the appropriate value for this field. (required)
  options_requestedPolicyVersion: integer, Optional. The policy format version to be returned. Valid values are 0, 1, and 3. Requests specifying an invalid value will be rejected. Requests for policies with any conditional bindings must specify version 3. Policies without any conditional bindings may specify any valid value or leave the field unset. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # An Identity and Access Management (IAM) policy, which specifies access controls for Google Cloud resources. A `Policy` is a collection of `bindings`. A `binding` binds one or more `members` to a single `role`. Members can be user accounts, service accounts, Google groups, and domains (such as G Suite). A `role` is a named list of permissions; each `role` can be an IAM predefined role or a user-created custom role. For some types of Google Cloud resources, a `binding` can also specify a `condition`, which is a logical expression that allows access to a resource only if the expression evaluates to `true`. A condition can add constraints based on attributes of the request, the resource, or both. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies). **JSON example:** { &quot;bindings&quot;: [ { &quot;role&quot;: &quot;roles/resourcemanager.organizationAdmin&quot;, &quot;members&quot;: [ &quot;user:mike@example.com&quot;, &quot;group:admins@example.com&quot;, &quot;domain:google.com&quot;, &quot;serviceAccount:my-project-id@appspot.gserviceaccount.com&quot; ] }, { &quot;role&quot;: &quot;roles/resourcemanager.organizationViewer&quot;, &quot;members&quot;: [ &quot;user:eve@example.com&quot; ], &quot;condition&quot;: { &quot;title&quot;: &quot;expirable access&quot;, &quot;description&quot;: &quot;Does not grant access after Sep 2020&quot;, &quot;expression&quot;: &quot;request.time &lt; timestamp(&#x27;2020-10-01T00:00:00.000Z&#x27;)&quot;, } } ], &quot;etag&quot;: &quot;BwWWja0YfJA=&quot;, &quot;version&quot;: 3 } **YAML example:** bindings: - members: - user:mike@example.com - group:admins@example.com - domain:google.com - serviceAccount:my-project-id@appspot.gserviceaccount.com role: roles/resourcemanager.organizationAdmin - members: - user:eve@example.com role: roles/resourcemanager.organizationViewer condition: title: expirable access description: Does not grant access after Sep 2020 expression: request.time &lt; timestamp(&#x27;2020-10-01T00:00:00.000Z&#x27;) - etag: BwWWja0YfJA= - version: 3 For a description of IAM and its features, see the [IAM documentation](https://cloud.google.com/iam/docs/).
    &quot;bindings&quot;: [ # Associates a list of `members` to a `role`. Optionally, may specify a `condition` that determines how and when the `bindings` are applied. Each of the `bindings` must contain at least one member.
      { # Associates `members` with a `role`.
        &quot;members&quot;: [ # Specifies the identities requesting access for a Cloud Platform resource. `members` can have the following values: * `allUsers`: A special identifier that represents anyone who is on the internet; with or without a Google account. * `allAuthenticatedUsers`: A special identifier that represents anyone who is authenticated with a Google account or a service account. * `user:{emailid}`: An email address that represents a specific Google account. For example, `alice@example.com` . * `serviceAccount:{emailid}`: An email address that represents a service account. For example, `my-other-app@appspot.gserviceaccount.com`. * `group:{emailid}`: An email address that represents a Google group. For example, `admins@example.com`. * `deleted:user:{emailid}?uid={uniqueid}`: An email address (plus unique identifier) representing a user that has been recently deleted. For example, `alice@example.com?uid=123456789012345678901`. If the user is recovered, this value reverts to `user:{emailid}` and the recovered user retains the role in the binding. * `deleted:serviceAccount:{emailid}?uid={uniqueid}`: An email address (plus unique identifier) representing a service account that has been recently deleted. For example, `my-other-app@appspot.gserviceaccount.com?uid=123456789012345678901`. If the service account is undeleted, this value reverts to `serviceAccount:{emailid}` and the undeleted service account retains the role in the binding. * `deleted:group:{emailid}?uid={uniqueid}`: An email address (plus unique identifier) representing a Google group that has been recently deleted. For example, `admins@example.com?uid=123456789012345678901`. If the group is recovered, this value reverts to `group:{emailid}` and the recovered group retains the role in the binding. * `domain:{domain}`: The G Suite domain (primary) that represents all the users of that domain. For example, `google.com` or `example.com`.
          &quot;A String&quot;,
        ],
        &quot;role&quot;: &quot;A String&quot;, # Role that is assigned to `members`. For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
        &quot;condition&quot;: { # Represents a textual expression in the Common Expression Language (CEL) syntax. CEL is a C-like expression language. The syntax and semantics of CEL are documented at https://github.com/google/cel-spec. Example (Comparison): title: &quot;Summary size limit&quot; description: &quot;Determines if a summary is less than 100 chars&quot; expression: &quot;document.summary.size() &lt; 100&quot; Example (Equality): title: &quot;Requestor is owner&quot; description: &quot;Determines if requestor is the document owner&quot; expression: &quot;document.owner == request.auth.claims.email&quot; Example (Logic): title: &quot;Public documents&quot; description: &quot;Determine whether the document should be publicly visible&quot; expression: &quot;document.type != &#x27;private&#x27; &amp;&amp; document.type != &#x27;internal&#x27;&quot; Example (Data Manipulation): title: &quot;Notification string&quot; description: &quot;Create a notification string with a timestamp.&quot; expression: &quot;&#x27;New message received at &#x27; + string(document.create_time)&quot; The exact variables and functions that may be referenced within an expression are determined by the service that evaluates it. See the service documentation for additional information. # The condition that is associated with this binding. If the condition evaluates to `true`, then this binding applies to the current request. If the condition evaluates to `false`, then this binding does not apply to the current request. However, a different role binding might grant the same role to one or more of the members in this binding. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
          &quot;location&quot;: &quot;A String&quot;, # Optional. String indicating the location of the expression for error reporting, e.g. a file name and a position in the file.
          &quot;title&quot;: &quot;A String&quot;, # Optional. Title for the expression, i.e. a short string describing its purpose. This can be used e.g. in UIs which allow to enter the expression.
          &quot;description&quot;: &quot;A String&quot;, # Optional. Description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI.
          &quot;expression&quot;: &quot;A String&quot;, # Textual representation of an expression in Common Expression Language syntax.
        },
      },
    ],
    &quot;version&quot;: 42, # Specifies the format of the policy. Valid values are `0`, `1`, and `3`. Requests that specify an invalid value are rejected. Any operation that affects conditional role bindings must specify version `3`. This requirement applies to the following operations: * Getting a policy that includes a conditional role binding * Adding a conditional role binding to a policy * Changing a conditional role binding in a policy * Removing any role binding, with or without a condition, from a policy that includes conditions **Important:** If you use IAM Conditions, you must include the `etag` field whenever you call `setIamPolicy`. If you omit this field, then IAM allows you to overwrite a version `3` policy with a version `1` policy, and all of the conditions in the version `3` policy are lost. If a policy does not include any conditions, operations on that policy may specify any valid version or leave the field unset. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
    &quot;etag&quot;: &quot;A String&quot;, # `etag` is used for optimistic concurrency control as a way to help prevent simultaneous updates of a policy from overwriting each other. It is strongly suggested that systems make use of the `etag` in the read-modify-write cycle to perform policy updates in order to avoid race conditions: An `etag` is returned in the response to `getIamPolicy`, and systems are expected to put that etag in the request to `setIamPolicy` to ensure that their change will be applied to the same version of the policy. **Important:** If you use IAM Conditions, you must include the `etag` field whenever you call `setIamPolicy`. If you omit this field, then IAM allows you to overwrite a version `3` policy with a version `1` policy, and all of the conditions in the version `3` policy are lost.
  }</pre>
</div>

<div class="method">
    <code class="details" id="list">list(project, pageToken=None, pageSize=None, x__xgafv=None)</code>
  <pre>Lists matching topics.

Args:
  project: string, Required. The name of the project in which to list topics. Format is `projects/{project-id}`. (required)
  pageToken: string, The value returned by the last `ListTopicsResponse`; indicates that this is a continuation of a prior `ListTopics` call, and that the system should return the next page of data.
  pageSize: integer, Maximum number of topics to return.
  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # Response for the `ListTopics` method.
    &quot;topics&quot;: [ # The resulting topics.
      { # A topic resource.
          &quot;messageStoragePolicy&quot;: { # A policy constraining the storage of messages published to the topic. # Policy constraining the set of Google Cloud Platform regions where messages published to the topic may be stored. If not present, then no constraints are in effect.
            &quot;allowedPersistenceRegions&quot;: [ # A list of IDs of GCP regions where messages that are published to the topic may be persisted in storage. Messages published by publishers running in non-allowed GCP regions (or running outside of GCP altogether) will be routed for storage in one of the allowed regions. An empty list means that no regions are allowed, and is not a valid configuration.
              &quot;A String&quot;,
            ],
          },
          &quot;kmsKeyName&quot;: &quot;A String&quot;, # The resource name of the Cloud KMS CryptoKey to be used to protect access to messages published on this topic. The expected format is `projects/*/locations/*/keyRings/*/cryptoKeys/*`.
          &quot;name&quot;: &quot;A String&quot;, # Required. The name of the topic. It must have the format `&quot;projects/{project}/topics/{topic}&quot;`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `&quot;goog&quot;`.
          &quot;labels&quot;: { # See [Creating and managing labels] (https://cloud.google.com/pubsub/docs/labels).
            &quot;a_key&quot;: &quot;A String&quot;,
          },
        },
    ],
    &quot;nextPageToken&quot;: &quot;A String&quot;, # If not empty, indicates that there may be more topics that match the request; this value should be passed in a new `ListTopicsRequest`.
  }</pre>
</div>

<div class="method">
    <code class="details" id="list_next">list_next(previous_request, previous_response)</code>
  <pre>Retrieves the next page of results.

Args:
  previous_request: The request for the previous page. (required)
  previous_response: The response from the request for the previous page. (required)

Returns:
  A request object that you can call &#x27;execute()&#x27; on to request the next
  page. Returns None if there are no more items in the collection.
    </pre>
</div>

<div class="method">
    <code class="details" id="patch">patch(name, body=None, x__xgafv=None)</code>
  <pre>Updates an existing topic. Note that certain properties of a topic are not modifiable.

Args:
  name: string, Required. The name of the topic. It must have the format `&quot;projects/{project}/topics/{topic}&quot;`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `&quot;goog&quot;`. (required)
  body: object, The request body.
    The object takes the form of:

{ # Request for the UpdateTopic method.
    &quot;updateMask&quot;: &quot;A String&quot;, # Required. Indicates which fields in the provided topic to update. Must be specified and non-empty. Note that if `update_mask` contains &quot;message_storage_policy&quot; but the `message_storage_policy` is not set in the `topic` provided above, then the updated value is determined by the policy configured at the project or organization level.
    &quot;topic&quot;: { # A topic resource. # Required. The updated topic object.
        &quot;messageStoragePolicy&quot;: { # A policy constraining the storage of messages published to the topic. # Policy constraining the set of Google Cloud Platform regions where messages published to the topic may be stored. If not present, then no constraints are in effect.
          &quot;allowedPersistenceRegions&quot;: [ # A list of IDs of GCP regions where messages that are published to the topic may be persisted in storage. Messages published by publishers running in non-allowed GCP regions (or running outside of GCP altogether) will be routed for storage in one of the allowed regions. An empty list means that no regions are allowed, and is not a valid configuration.
            &quot;A String&quot;,
          ],
        },
        &quot;kmsKeyName&quot;: &quot;A String&quot;, # The resource name of the Cloud KMS CryptoKey to be used to protect access to messages published on this topic. The expected format is `projects/*/locations/*/keyRings/*/cryptoKeys/*`.
        &quot;name&quot;: &quot;A String&quot;, # Required. The name of the topic. It must have the format `&quot;projects/{project}/topics/{topic}&quot;`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `&quot;goog&quot;`.
        &quot;labels&quot;: { # See [Creating and managing labels] (https://cloud.google.com/pubsub/docs/labels).
          &quot;a_key&quot;: &quot;A String&quot;,
        },
      },
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # A topic resource.
      &quot;messageStoragePolicy&quot;: { # A policy constraining the storage of messages published to the topic. # Policy constraining the set of Google Cloud Platform regions where messages published to the topic may be stored. If not present, then no constraints are in effect.
        &quot;allowedPersistenceRegions&quot;: [ # A list of IDs of GCP regions where messages that are published to the topic may be persisted in storage. Messages published by publishers running in non-allowed GCP regions (or running outside of GCP altogether) will be routed for storage in one of the allowed regions. An empty list means that no regions are allowed, and is not a valid configuration.
          &quot;A String&quot;,
        ],
      },
      &quot;kmsKeyName&quot;: &quot;A String&quot;, # The resource name of the Cloud KMS CryptoKey to be used to protect access to messages published on this topic. The expected format is `projects/*/locations/*/keyRings/*/cryptoKeys/*`.
      &quot;name&quot;: &quot;A String&quot;, # Required. The name of the topic. It must have the format `&quot;projects/{project}/topics/{topic}&quot;`. `{topic}` must start with a letter, and contain only letters (`[A-Za-z]`), numbers (`[0-9]`), dashes (`-`), underscores (`_`), periods (`.`), tildes (`~`), plus (`+`) or percent signs (`%`). It must be between 3 and 255 characters in length, and it must not start with `&quot;goog&quot;`.
      &quot;labels&quot;: { # See [Creating and managing labels] (https://cloud.google.com/pubsub/docs/labels).
        &quot;a_key&quot;: &quot;A String&quot;,
      },
    }</pre>
</div>

<div class="method">
    <code class="details" id="publish">publish(topic, body=None, x__xgafv=None)</code>
  <pre>Adds one or more messages to the topic. Returns `NOT_FOUND` if the topic does not exist.

Args:
  topic: string, Required. The messages in the request will be published on this topic. Format is `projects/{project}/topics/{topic}`. (required)
  body: object, The request body.
    The object takes the form of:

{ # Request for the Publish method.
    &quot;messages&quot;: [ # Required. The messages to publish.
      { # A message that is published by publishers and consumed by subscribers. The message must contain either a non-empty data field or at least one attribute. Note that client libraries represent this object differently depending on the language. See the corresponding [client library documentation](https://cloud.google.com/pubsub/docs/reference/libraries) for more information. See [quotas and limits] (https://cloud.google.com/pubsub/quotas) for more information about message limits.
        &quot;attributes&quot;: { # Attributes for this message. If this field is empty, the message must contain non-empty data. This can be used to filter messages on the subscription.
          &quot;a_key&quot;: &quot;A String&quot;,
        },
        &quot;data&quot;: &quot;A String&quot;, # The message data field. If this field is empty, the message must contain at least one attribute.
        &quot;messageId&quot;: &quot;A String&quot;, # ID of this message, assigned by the server when the message is published. Guaranteed to be unique within the topic. This value may be read by a subscriber that receives a `PubsubMessage` via a `Pull` call or a push delivery. It must not be populated by the publisher in a `Publish` call.
        &quot;orderingKey&quot;: &quot;A String&quot;, # If non-empty, identifies related messages for which publish order should be respected. If a `Subscription` has `enable_message_ordering` set to `true`, messages published with the same non-empty `ordering_key` value will be delivered to subscribers in the order in which they are received by the Pub/Sub system. All `PubsubMessage`s published in a given `PublishRequest` must specify the same `ordering_key` value.
        &quot;publishTime&quot;: &quot;A String&quot;, # The time at which the message was published, populated by the server when it receives the `Publish` call. It must not be populated by the publisher in a `Publish` call.
      },
    ],
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # Response for the `Publish` method.
    &quot;messageIds&quot;: [ # The server-assigned ID of each published message, in the same order as the messages in the request. IDs are guaranteed to be unique within the topic.
      &quot;A String&quot;,
    ],
  }</pre>
</div>

<div class="method">
    <code class="details" id="setIamPolicy">setIamPolicy(resource, body=None, x__xgafv=None)</code>
  <pre>Sets the access control policy on the specified resource. Replaces any existing policy. Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.

Args:
  resource: string, REQUIRED: The resource for which the policy is being specified. See the operation documentation for the appropriate value for this field. (required)
  body: object, The request body.
    The object takes the form of:

{ # Request message for `SetIamPolicy` method.
    &quot;policy&quot;: { # An Identity and Access Management (IAM) policy, which specifies access controls for Google Cloud resources. A `Policy` is a collection of `bindings`. A `binding` binds one or more `members` to a single `role`. Members can be user accounts, service accounts, Google groups, and domains (such as G Suite). A `role` is a named list of permissions; each `role` can be an IAM predefined role or a user-created custom role. For some types of Google Cloud resources, a `binding` can also specify a `condition`, which is a logical expression that allows access to a resource only if the expression evaluates to `true`. A condition can add constraints based on attributes of the request, the resource, or both. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies). **JSON example:** { &quot;bindings&quot;: [ { &quot;role&quot;: &quot;roles/resourcemanager.organizationAdmin&quot;, &quot;members&quot;: [ &quot;user:mike@example.com&quot;, &quot;group:admins@example.com&quot;, &quot;domain:google.com&quot;, &quot;serviceAccount:my-project-id@appspot.gserviceaccount.com&quot; ] }, { &quot;role&quot;: &quot;roles/resourcemanager.organizationViewer&quot;, &quot;members&quot;: [ &quot;user:eve@example.com&quot; ], &quot;condition&quot;: { &quot;title&quot;: &quot;expirable access&quot;, &quot;description&quot;: &quot;Does not grant access after Sep 2020&quot;, &quot;expression&quot;: &quot;request.time &lt; timestamp(&#x27;2020-10-01T00:00:00.000Z&#x27;)&quot;, } } ], &quot;etag&quot;: &quot;BwWWja0YfJA=&quot;, &quot;version&quot;: 3 } **YAML example:** bindings: - members: - user:mike@example.com - group:admins@example.com - domain:google.com - serviceAccount:my-project-id@appspot.gserviceaccount.com role: roles/resourcemanager.organizationAdmin - members: - user:eve@example.com role: roles/resourcemanager.organizationViewer condition: title: expirable access description: Does not grant access after Sep 2020 expression: request.time &lt; timestamp(&#x27;2020-10-01T00:00:00.000Z&#x27;) - etag: BwWWja0YfJA= - version: 3 For a description of IAM and its features, see the [IAM documentation](https://cloud.google.com/iam/docs/). # REQUIRED: The complete policy to be applied to the `resource`. The size of the policy is limited to a few 10s of KB. An empty policy is a valid policy but certain Cloud Platform services (such as Projects) might reject them.
      &quot;bindings&quot;: [ # Associates a list of `members` to a `role`. Optionally, may specify a `condition` that determines how and when the `bindings` are applied. Each of the `bindings` must contain at least one member.
        { # Associates `members` with a `role`.
          &quot;members&quot;: [ # Specifies the identities requesting access for a Cloud Platform resource. `members` can have the following values: * `allUsers`: A special identifier that represents anyone who is on the internet; with or without a Google account. * `allAuthenticatedUsers`: A special identifier that represents anyone who is authenticated with a Google account or a service account. * `user:{emailid}`: An email address that represents a specific Google account. For example, `alice@example.com` . * `serviceAccount:{emailid}`: An email address that represents a service account. For example, `my-other-app@appspot.gserviceaccount.com`. * `group:{emailid}`: An email address that represents a Google group. For example, `admins@example.com`. * `deleted:user:{emailid}?uid={uniqueid}`: An email address (plus unique identifier) representing a user that has been recently deleted. For example, `alice@example.com?uid=123456789012345678901`. If the user is recovered, this value reverts to `user:{emailid}` and the recovered user retains the role in the binding. * `deleted:serviceAccount:{emailid}?uid={uniqueid}`: An email address (plus unique identifier) representing a service account that has been recently deleted. For example, `my-other-app@appspot.gserviceaccount.com?uid=123456789012345678901`. If the service account is undeleted, this value reverts to `serviceAccount:{emailid}` and the undeleted service account retains the role in the binding. * `deleted:group:{emailid}?uid={uniqueid}`: An email address (plus unique identifier) representing a Google group that has been recently deleted. For example, `admins@example.com?uid=123456789012345678901`. If the group is recovered, this value reverts to `group:{emailid}` and the recovered group retains the role in the binding. * `domain:{domain}`: The G Suite domain (primary) that represents all the users of that domain. For example, `google.com` or `example.com`.
            &quot;A String&quot;,
          ],
          &quot;role&quot;: &quot;A String&quot;, # Role that is assigned to `members`. For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
          &quot;condition&quot;: { # Represents a textual expression in the Common Expression Language (CEL) syntax. CEL is a C-like expression language. The syntax and semantics of CEL are documented at https://github.com/google/cel-spec. Example (Comparison): title: &quot;Summary size limit&quot; description: &quot;Determines if a summary is less than 100 chars&quot; expression: &quot;document.summary.size() &lt; 100&quot; Example (Equality): title: &quot;Requestor is owner&quot; description: &quot;Determines if requestor is the document owner&quot; expression: &quot;document.owner == request.auth.claims.email&quot; Example (Logic): title: &quot;Public documents&quot; description: &quot;Determine whether the document should be publicly visible&quot; expression: &quot;document.type != &#x27;private&#x27; &amp;&amp; document.type != &#x27;internal&#x27;&quot; Example (Data Manipulation): title: &quot;Notification string&quot; description: &quot;Create a notification string with a timestamp.&quot; expression: &quot;&#x27;New message received at &#x27; + string(document.create_time)&quot; The exact variables and functions that may be referenced within an expression are determined by the service that evaluates it. See the service documentation for additional information. # The condition that is associated with this binding. If the condition evaluates to `true`, then this binding applies to the current request. If the condition evaluates to `false`, then this binding does not apply to the current request. However, a different role binding might grant the same role to one or more of the members in this binding. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
            &quot;location&quot;: &quot;A String&quot;, # Optional. String indicating the location of the expression for error reporting, e.g. a file name and a position in the file.
            &quot;title&quot;: &quot;A String&quot;, # Optional. Title for the expression, i.e. a short string describing its purpose. This can be used e.g. in UIs which allow to enter the expression.
            &quot;description&quot;: &quot;A String&quot;, # Optional. Description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI.
            &quot;expression&quot;: &quot;A String&quot;, # Textual representation of an expression in Common Expression Language syntax.
          },
        },
      ],
      &quot;version&quot;: 42, # Specifies the format of the policy. Valid values are `0`, `1`, and `3`. Requests that specify an invalid value are rejected. Any operation that affects conditional role bindings must specify version `3`. This requirement applies to the following operations: * Getting a policy that includes a conditional role binding * Adding a conditional role binding to a policy * Changing a conditional role binding in a policy * Removing any role binding, with or without a condition, from a policy that includes conditions **Important:** If you use IAM Conditions, you must include the `etag` field whenever you call `setIamPolicy`. If you omit this field, then IAM allows you to overwrite a version `3` policy with a version `1` policy, and all of the conditions in the version `3` policy are lost. If a policy does not include any conditions, operations on that policy may specify any valid version or leave the field unset. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
      &quot;etag&quot;: &quot;A String&quot;, # `etag` is used for optimistic concurrency control as a way to help prevent simultaneous updates of a policy from overwriting each other. It is strongly suggested that systems make use of the `etag` in the read-modify-write cycle to perform policy updates in order to avoid race conditions: An `etag` is returned in the response to `getIamPolicy`, and systems are expected to put that etag in the request to `setIamPolicy` to ensure that their change will be applied to the same version of the policy. **Important:** If you use IAM Conditions, you must include the `etag` field whenever you call `setIamPolicy`. If you omit this field, then IAM allows you to overwrite a version `3` policy with a version `1` policy, and all of the conditions in the version `3` policy are lost.
    },
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # An Identity and Access Management (IAM) policy, which specifies access controls for Google Cloud resources. A `Policy` is a collection of `bindings`. A `binding` binds one or more `members` to a single `role`. Members can be user accounts, service accounts, Google groups, and domains (such as G Suite). A `role` is a named list of permissions; each `role` can be an IAM predefined role or a user-created custom role. For some types of Google Cloud resources, a `binding` can also specify a `condition`, which is a logical expression that allows access to a resource only if the expression evaluates to `true`. A condition can add constraints based on attributes of the request, the resource, or both. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies). **JSON example:** { &quot;bindings&quot;: [ { &quot;role&quot;: &quot;roles/resourcemanager.organizationAdmin&quot;, &quot;members&quot;: [ &quot;user:mike@example.com&quot;, &quot;group:admins@example.com&quot;, &quot;domain:google.com&quot;, &quot;serviceAccount:my-project-id@appspot.gserviceaccount.com&quot; ] }, { &quot;role&quot;: &quot;roles/resourcemanager.organizationViewer&quot;, &quot;members&quot;: [ &quot;user:eve@example.com&quot; ], &quot;condition&quot;: { &quot;title&quot;: &quot;expirable access&quot;, &quot;description&quot;: &quot;Does not grant access after Sep 2020&quot;, &quot;expression&quot;: &quot;request.time &lt; timestamp(&#x27;2020-10-01T00:00:00.000Z&#x27;)&quot;, } } ], &quot;etag&quot;: &quot;BwWWja0YfJA=&quot;, &quot;version&quot;: 3 } **YAML example:** bindings: - members: - user:mike@example.com - group:admins@example.com - domain:google.com - serviceAccount:my-project-id@appspot.gserviceaccount.com role: roles/resourcemanager.organizationAdmin - members: - user:eve@example.com role: roles/resourcemanager.organizationViewer condition: title: expirable access description: Does not grant access after Sep 2020 expression: request.time &lt; timestamp(&#x27;2020-10-01T00:00:00.000Z&#x27;) - etag: BwWWja0YfJA= - version: 3 For a description of IAM and its features, see the [IAM documentation](https://cloud.google.com/iam/docs/).
    &quot;bindings&quot;: [ # Associates a list of `members` to a `role`. Optionally, may specify a `condition` that determines how and when the `bindings` are applied. Each of the `bindings` must contain at least one member.
      { # Associates `members` with a `role`.
        &quot;members&quot;: [ # Specifies the identities requesting access for a Cloud Platform resource. `members` can have the following values: * `allUsers`: A special identifier that represents anyone who is on the internet; with or without a Google account. * `allAuthenticatedUsers`: A special identifier that represents anyone who is authenticated with a Google account or a service account. * `user:{emailid}`: An email address that represents a specific Google account. For example, `alice@example.com` . * `serviceAccount:{emailid}`: An email address that represents a service account. For example, `my-other-app@appspot.gserviceaccount.com`. * `group:{emailid}`: An email address that represents a Google group. For example, `admins@example.com`. * `deleted:user:{emailid}?uid={uniqueid}`: An email address (plus unique identifier) representing a user that has been recently deleted. For example, `alice@example.com?uid=123456789012345678901`. If the user is recovered, this value reverts to `user:{emailid}` and the recovered user retains the role in the binding. * `deleted:serviceAccount:{emailid}?uid={uniqueid}`: An email address (plus unique identifier) representing a service account that has been recently deleted. For example, `my-other-app@appspot.gserviceaccount.com?uid=123456789012345678901`. If the service account is undeleted, this value reverts to `serviceAccount:{emailid}` and the undeleted service account retains the role in the binding. * `deleted:group:{emailid}?uid={uniqueid}`: An email address (plus unique identifier) representing a Google group that has been recently deleted. For example, `admins@example.com?uid=123456789012345678901`. If the group is recovered, this value reverts to `group:{emailid}` and the recovered group retains the role in the binding. * `domain:{domain}`: The G Suite domain (primary) that represents all the users of that domain. For example, `google.com` or `example.com`.
          &quot;A String&quot;,
        ],
        &quot;role&quot;: &quot;A String&quot;, # Role that is assigned to `members`. For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
        &quot;condition&quot;: { # Represents a textual expression in the Common Expression Language (CEL) syntax. CEL is a C-like expression language. The syntax and semantics of CEL are documented at https://github.com/google/cel-spec. Example (Comparison): title: &quot;Summary size limit&quot; description: &quot;Determines if a summary is less than 100 chars&quot; expression: &quot;document.summary.size() &lt; 100&quot; Example (Equality): title: &quot;Requestor is owner&quot; description: &quot;Determines if requestor is the document owner&quot; expression: &quot;document.owner == request.auth.claims.email&quot; Example (Logic): title: &quot;Public documents&quot; description: &quot;Determine whether the document should be publicly visible&quot; expression: &quot;document.type != &#x27;private&#x27; &amp;&amp; document.type != &#x27;internal&#x27;&quot; Example (Data Manipulation): title: &quot;Notification string&quot; description: &quot;Create a notification string with a timestamp.&quot; expression: &quot;&#x27;New message received at &#x27; + string(document.create_time)&quot; The exact variables and functions that may be referenced within an expression are determined by the service that evaluates it. See the service documentation for additional information. # The condition that is associated with this binding. If the condition evaluates to `true`, then this binding applies to the current request. If the condition evaluates to `false`, then this binding does not apply to the current request. However, a different role binding might grant the same role to one or more of the members in this binding. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
          &quot;location&quot;: &quot;A String&quot;, # Optional. String indicating the location of the expression for error reporting, e.g. a file name and a position in the file.
          &quot;title&quot;: &quot;A String&quot;, # Optional. Title for the expression, i.e. a short string describing its purpose. This can be used e.g. in UIs which allow to enter the expression.
          &quot;description&quot;: &quot;A String&quot;, # Optional. Description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI.
          &quot;expression&quot;: &quot;A String&quot;, # Textual representation of an expression in Common Expression Language syntax.
        },
      },
    ],
    &quot;version&quot;: 42, # Specifies the format of the policy. Valid values are `0`, `1`, and `3`. Requests that specify an invalid value are rejected. Any operation that affects conditional role bindings must specify version `3`. This requirement applies to the following operations: * Getting a policy that includes a conditional role binding * Adding a conditional role binding to a policy * Changing a conditional role binding in a policy * Removing any role binding, with or without a condition, from a policy that includes conditions **Important:** If you use IAM Conditions, you must include the `etag` field whenever you call `setIamPolicy`. If you omit this field, then IAM allows you to overwrite a version `3` policy with a version `1` policy, and all of the conditions in the version `3` policy are lost. If a policy does not include any conditions, operations on that policy may specify any valid version or leave the field unset. To learn which resources support conditions in their IAM policies, see the [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
    &quot;etag&quot;: &quot;A String&quot;, # `etag` is used for optimistic concurrency control as a way to help prevent simultaneous updates of a policy from overwriting each other. It is strongly suggested that systems make use of the `etag` in the read-modify-write cycle to perform policy updates in order to avoid race conditions: An `etag` is returned in the response to `getIamPolicy`, and systems are expected to put that etag in the request to `setIamPolicy` to ensure that their change will be applied to the same version of the policy. **Important:** If you use IAM Conditions, you must include the `etag` field whenever you call `setIamPolicy`. If you omit this field, then IAM allows you to overwrite a version `3` policy with a version `1` policy, and all of the conditions in the version `3` policy are lost.
  }</pre>
</div>

<div class="method">
    <code class="details" id="testIamPermissions">testIamPermissions(resource, body=None, x__xgafv=None)</code>
  <pre>Returns permissions that a caller has on the specified resource. If the resource does not exist, this will return an empty set of permissions, not a `NOT_FOUND` error. Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may &quot;fail open&quot; without warning.

Args:
  resource: string, REQUIRED: The resource for which the policy detail is being requested. See the operation documentation for the appropriate value for this field. (required)
  body: object, The request body.
    The object takes the form of:

{ # Request message for `TestIamPermissions` method.
    &quot;permissions&quot;: [ # The set of permissions to check for the `resource`. Permissions with wildcards (such as &#x27;*&#x27; or &#x27;storage.*&#x27;) are not allowed. For more information see [IAM Overview](https://cloud.google.com/iam/docs/overview#permissions).
      &quot;A String&quot;,
    ],
  }

  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format

Returns:
  An object of the form:

    { # Response message for `TestIamPermissions` method.
    &quot;permissions&quot;: [ # A subset of `TestPermissionsRequest.permissions` that the caller is allowed.
      &quot;A String&quot;,
    ],
  }</pre>
</div>

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