Instances of this class created via copy-construction or copy-assignment always compare equal. Instances created with equal std::shared_ptr<*Connection> objects compare equal. Objects that compare equal share the same underlying resources.
Performance
Creating a new instance of this class is a relatively expensive operation, new objects establish new connections to the service. In contrast, copy-construction, move-construction, and the corresponding assignment operations are relatively efficient as the copies share all underlying resources.
Thread Safety
Concurrent access to different instances of this class, even if they compare equal, is guaranteed to work. Two or more threads operating on the same instance of this class is not guaranteed to work. Since copy-construction and move-construction is a relatively efficient operation, consider using such a copy when using this class from multiple threads.
a StreamRange to iterate of the results. See the documentation of this type for details. In brief, this class has begin() and end() member functions returning a iterator class meeting the input iterator requirements. The value type for this iterator is a StatusOr as the iteration may fail even after some values are retrieved successfully, for example, if there is a network disconnect. An empty set of results does not indicate an error, it indicates that there are no resources meeting the request criteria. On a successful iteration the StatusOr<T> contains elements of type google.cloud.dialogflow.cx.v3.Changelog, or rather, the C++ class generated by Protobuf from that type. Please consult the Protobuf documentation for details on the Protobuf mapping rules.
Unary RPCs, such as the one wrapped by this function, receive a single request proto message which includes all the inputs for the RPC. In this case, the proto message is a google.cloud.dialogflow.cx.v3.ListChangelogsRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
opts
Options
Optional. Override the class-level options, such as retry and backoff policies.
a StreamRange to iterate of the results. See the documentation of this type for details. In brief, this class has begin() and end() member functions returning a iterator class meeting the input iterator requirements. The value type for this iterator is a StatusOr as the iteration may fail even after some values are retrieved successfully, for example, if there is a network disconnect. An empty set of results does not indicate an error, it indicates that there are no resources meeting the request criteria. On a successful iteration the StatusOr<T> contains elements of type google.cloud.dialogflow.cx.v3.Changelog, or rather, the C++ class generated by Protobuf from that type. Please consult the Protobuf documentation for details on the Protobuf mapping rules.
GetChangelog(std::string const &, Options)
Retrieves the specified Changelog.
Parameters
Name
Description
name
std::string const &
Required. The name of the changelog to get. Format: projects/<ProjectID>/locations/<LocationID>/agents/<AgentID>/changelogs/<ChangelogID>.
opts
Options
Optional. Override the class-level options, such as retry and backoff policies.
Unary RPCs, such as the one wrapped by this function, receive a single request proto message which includes all the inputs for the RPC. In this case, the proto message is a google.cloud.dialogflow.cx.v3.GetChangelogRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
opts
Options
Optional. Override the class-level options, such as retry and backoff policies.
Lists information about the supported locations for this service.
Parameters
Name
Description
request
google::cloud::location::ListLocationsRequest
Unary RPCs, such as the one wrapped by this function, receive a single request proto message which includes all the inputs for the RPC. In this case, the proto message is a google.cloud.location.ListLocationsRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
opts
Options
Optional. Override the class-level options, such as retry and backoff policies.
Returns
Type
Description
StreamRange< google::cloud::location::Location >
a StreamRange to iterate of the results. See the documentation of this type for details. In brief, this class has begin() and end() member functions returning a iterator class meeting the input iterator requirements. The value type for this iterator is a StatusOr as the iteration may fail even after some values are retrieved successfully, for example, if there is a network disconnect. An empty set of results does not indicate an error, it indicates that there are no resources meeting the request criteria. On a successful iteration the StatusOr<T> contains elements of type google.cloud.location.Location, or rather, the C++ class generated by Protobuf from that type. Please consult the Protobuf documentation for details on the Protobuf mapping rules.
Unary RPCs, such as the one wrapped by this function, receive a single request proto message which includes all the inputs for the RPC. In this case, the proto message is a google.cloud.location.GetLocationRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
opts
Options
Optional. Override the class-level options, such as retry and backoff policies.
Lists operations that match the specified filter in the request.
If the server doesn't support this method, it returns UNIMPLEMENTED.
Parameters
Name
Description
name
std::string const &
The name of the operation's parent resource.
filter
std::string const &
The standard list filter.
opts
Options
Optional. Override the class-level options, such as retry and backoff policies.
Returns
Type
Description
StreamRange< google::longrunning::Operation >
a StreamRange to iterate of the results. See the documentation of this type for details. In brief, this class has begin() and end() member functions returning a iterator class meeting the input iterator requirements. The value type for this iterator is a StatusOr as the iteration may fail even after some values are retrieved successfully, for example, if there is a network disconnect. An empty set of results does not indicate an error, it indicates that there are no resources meeting the request criteria. On a successful iteration the StatusOr<T> contains elements of type google.longrunning.Operation, or rather, the C++ class generated by Protobuf from that type. Please consult the Protobuf documentation for details on the Protobuf mapping rules.
Lists operations that match the specified filter in the request.
If the server doesn't support this method, it returns UNIMPLEMENTED.
Parameters
Name
Description
request
google::longrunning::ListOperationsRequest
Unary RPCs, such as the one wrapped by this function, receive a single request proto message which includes all the inputs for the RPC. In this case, the proto message is a google.longrunning.ListOperationsRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
opts
Options
Optional. Override the class-level options, such as retry and backoff policies.
Returns
Type
Description
StreamRange< google::longrunning::Operation >
a StreamRange to iterate of the results. See the documentation of this type for details. In brief, this class has begin() and end() member functions returning a iterator class meeting the input iterator requirements. The value type for this iterator is a StatusOr as the iteration may fail even after some values are retrieved successfully, for example, if there is a network disconnect. An empty set of results does not indicate an error, it indicates that there are no resources meeting the request criteria. On a successful iteration the StatusOr<T> contains elements of type google.longrunning.Operation, or rather, the C++ class generated by Protobuf from that type. Please consult the Protobuf documentation for details on the Protobuf mapping rules.
GetOperation(std::string const &, Options)
Gets the latest state of a long-running operation.
Clients can use this method to poll the operation result at intervals as recommended by the API service.
Parameters
Name
Description
name
std::string const &
The name of the operation resource.
opts
Options
Optional. Override the class-level options, such as retry and backoff policies.
Gets the latest state of a long-running operation.
Clients can use this method to poll the operation result at intervals as recommended by the API service.
Parameters
Name
Description
request
google::longrunning::GetOperationRequest const &
Unary RPCs, such as the one wrapped by this function, receive a single request proto message which includes all the inputs for the RPC. In this case, the proto message is a google.longrunning.GetOperationRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
opts
Options
Optional. Override the class-level options, such as retry and backoff policies.
Starts asynchronous cancellation on a long-running operation.
The server makes a best effort to cancel the operation, but success is not guaranteed. If the server doesn't support this method, it returns google.rpc.Code.UNIMPLEMENTED. Clients can use Operations.GetOperation or other methods to check whether the cancellation succeeded or whether the operation completed despite cancellation. On successful cancellation, the operation is not deleted; instead, it becomes an operation with an Operation.error value with a google.rpc.Status.code of 1, corresponding to Code.CANCELLED.
Parameters
Name
Description
name
std::string const &
The name of the operation resource to be cancelled.
opts
Options
Optional. Override the class-level options, such as retry and backoff policies.
Returns
Type
Description
Status
a Status object. If the request failed, the status contains the details of the failure.
Starts asynchronous cancellation on a long-running operation.
The server makes a best effort to cancel the operation, but success is not guaranteed. If the server doesn't support this method, it returns google.rpc.Code.UNIMPLEMENTED. Clients can use Operations.GetOperation or other methods to check whether the cancellation succeeded or whether the operation completed despite cancellation. On successful cancellation, the operation is not deleted; instead, it becomes an operation with an Operation.error value with a google.rpc.Status.code of 1, corresponding to Code.CANCELLED.
Unary RPCs, such as the one wrapped by this function, receive a single request proto message which includes all the inputs for the RPC. In this case, the proto message is a google.longrunning.CancelOperationRequest. Proto messages are converted to C++ classes by Protobuf, using the Protobuf mapping rules.
opts
Options
Optional. Override the class-level options, such as retry and backoff policies.
Returns
Type
Description
Status
a Status object. If the request failed, the status contains the details of the failure.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eThis page details the \u003ccode\u003eChangelogsClient\u003c/code\u003e class for managing Changelogs within Google Cloud's Dialogflow CX service, with the most recent version being \u003ccode\u003e2.37.0-rc\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eChangelogsClient\u003c/code\u003e class supports copy and move operations, with copied instances sharing underlying resources and comparing equally.\u003c/p\u003e\n"],["\u003cp\u003eThe class provides functions to retrieve, list, and manage Changelogs, including \u003ccode\u003eListChangelogs\u003c/code\u003e and \u003ccode\u003eGetChangelog\u003c/code\u003e, either through direct parameters or a request proto message.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eChangelogsClient\u003c/code\u003e class has methods to support working with long-running operations such as \u003ccode\u003eListOperations\u003c/code\u003e, \u003ccode\u003eGetOperation\u003c/code\u003e and \u003ccode\u003eCancelOperation\u003c/code\u003e, and locations such as \u003ccode\u003eListLocations\u003c/code\u003e and \u003ccode\u003eGetLocation\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThread safety is ensured for concurrent access to different instances, but not for multiple threads operating on the same instance.\u003c/p\u003e\n"]]],[],null,["# Class ChangelogsClient (2.42.0-rc)\n\nVersion latestkeyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/dialogflow_cx/latest/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.41.0](/cpp/docs/reference/dialogflow_cx/2.41.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.40.0](/cpp/docs/reference/dialogflow_cx/2.40.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.39.0](/cpp/docs/reference/dialogflow_cx/2.39.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.38.0](/cpp/docs/reference/dialogflow_cx/2.38.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.37.0](/cpp/docs/reference/dialogflow_cx/2.37.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.36.0](/cpp/docs/reference/dialogflow_cx/2.36.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.35.0](/cpp/docs/reference/dialogflow_cx/2.35.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.34.0](/cpp/docs/reference/dialogflow_cx/2.34.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.33.0](/cpp/docs/reference/dialogflow_cx/2.33.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.32.0](/cpp/docs/reference/dialogflow_cx/2.32.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.31.0](/cpp/docs/reference/dialogflow_cx/2.31.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.30.0](/cpp/docs/reference/dialogflow_cx/2.30.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.29.0](/cpp/docs/reference/dialogflow_cx/2.29.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.28.0](/cpp/docs/reference/dialogflow_cx/2.28.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.27.0](/cpp/docs/reference/dialogflow_cx/2.27.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.26.0](/cpp/docs/reference/dialogflow_cx/2.26.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.25.1](/cpp/docs/reference/dialogflow_cx/2.25.1/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.24.0](/cpp/docs/reference/dialogflow_cx/2.24.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.23.0](/cpp/docs/reference/dialogflow_cx/2.23.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.22.1](/cpp/docs/reference/dialogflow_cx/2.22.1/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.21.0](/cpp/docs/reference/dialogflow_cx/2.21.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.20.0](/cpp/docs/reference/dialogflow_cx/2.20.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.19.0](/cpp/docs/reference/dialogflow_cx/2.19.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.18.0](/cpp/docs/reference/dialogflow_cx/2.18.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.17.0](/cpp/docs/reference/dialogflow_cx/2.17.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.16.0](/cpp/docs/reference/dialogflow_cx/2.16.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.15.1](/cpp/docs/reference/dialogflow_cx/2.15.1/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.14.0](/cpp/docs/reference/dialogflow_cx/2.14.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.13.0](/cpp/docs/reference/dialogflow_cx/2.13.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.12.0](/cpp/docs/reference/dialogflow_cx/2.12.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient)\n- [2.11.0](/cpp/docs/reference/dialogflow_cx/2.11.0/classgoogle_1_1cloud_1_1dialogflow__cx_1_1ChangelogsClient) \nService for managing [Changelogs](https://github.com/googleapis/googleapis/blob/a92cee399e0fc8afa2d460373b1085f543bc8d3f/google/cloud/dialogflow/cx/v3/changelog.proto#L127). \n\n###### Equality\n\nInstances of this class created via copy-construction or copy-assignment always compare equal. Instances created with equal `std::shared_ptr\u003c*Connection\u003e` objects compare equal. Objects that compare equal share the same underlying resources.\n\n###### Performance\n\nCreating a new instance of this class is a relatively expensive operation, new objects establish new connections to the service. In contrast, copy-construction, move-construction, and the corresponding assignment operations are relatively efficient as the copies share all underlying resources.\n\n###### Thread Safety\n\nConcurrent access to different instances of this class, even if they compare equal, is guaranteed to work. Two or more threads operating on the same instance of this class is not guaranteed to work. Since copy-construction and move-construction is a relatively efficient operation, consider using such a copy when using this class from multiple threads.\n\nConstructors\n------------\n\n### ChangelogsClient(ChangelogsClient const \\&)\n\nCopy and move support\n\n### ChangelogsClient(ChangelogsClient \\&\\&)\n\nCopy and move support\n\n### ChangelogsClient(std::shared_ptr\\\u003c ChangelogsConnection \\\u003e, Options)\n\nOperators\n---------\n\n### operator=(ChangelogsClient const \\&)\n\nCopy and move support\n\n### operator=(ChangelogsClient \\&\\&)\n\nCopy and move support\n\nFunctions\n---------\n\n### ListChangelogs(std::string const \\&, Options)\n\nReturns the list of Changelogs.\n\n### ListChangelogs(google::cloud::dialogflow::cx::v3::ListChangelogsRequest, Options)\n\nReturns the list of Changelogs.\n\n### GetChangelog(std::string const \\&, Options)\n\nRetrieves the specified Changelog.\n\n### GetChangelog(google::cloud::dialogflow::cx::v3::GetChangelogRequest const \\&, Options)\n\nRetrieves the specified Changelog.\n\n### ListLocations(google::cloud::location::ListLocationsRequest, Options)\n\nLists information about the supported locations for this service.\n\n### GetLocation(google::cloud::location::GetLocationRequest const \\&, Options)\n\nGets information about a location.\n\n### ListOperations(std::string const \\&, std::string const \\&, Options)\n\nLists operations that match the specified filter in the request. \nIf the server doesn't support this method, it returns `UNIMPLEMENTED`.\n\n### ListOperations(google::longrunning::ListOperationsRequest, Options)\n\nLists operations that match the specified filter in the request. \nIf the server doesn't support this method, it returns `UNIMPLEMENTED`.\n\n### GetOperation(std::string const \\&, Options)\n\nGets the latest state of a long-running operation. \nClients can use this method to poll the operation result at intervals as recommended by the API service.\n\n### GetOperation(google::longrunning::GetOperationRequest const \\&, Options)\n\nGets the latest state of a long-running operation. \nClients can use this method to poll the operation result at intervals as recommended by the API service.\n\n### CancelOperation(std::string const \\&, Options)\n\nStarts asynchronous cancellation on a long-running operation. \nThe server makes a best effort to cancel the operation, but success is not guaranteed. If the server doesn't support this method, it returns `google.rpc.Code.UNIMPLEMENTED`. Clients can use [Operations.GetOperation](https://github.com/googleapis/googleapis/blob/a92cee399e0fc8afa2d460373b1085f543bc8d3f/google/longrunning/operations.proto#L70) or other methods to check whether the cancellation succeeded or whether the operation completed despite cancellation. On successful cancellation, the operation is not deleted; instead, it becomes an operation with an [Operation.error](https://github.com/googleapis/googleapis/blob/a92cee399e0fc8afa2d460373b1085f543bc8d3f/google/longrunning/operations.proto#L144) value with a [google.rpc.Status.code](https://github.com/googleapis/googleapis/blob/a92cee399e0fc8afa2d460373b1085f543bc8d3f/google/rpc/status.proto#L38) of `1`, corresponding to `Code.CANCELLED`.\n\n### CancelOperation(google::longrunning::CancelOperationRequest const \\&, Options)\n\nStarts asynchronous cancellation on a long-running operation. \nThe server makes a best effort to cancel the operation, but success is not guaranteed. If the server doesn't support this method, it returns `google.rpc.Code.UNIMPLEMENTED`. Clients can use [Operations.GetOperation](https://github.com/googleapis/googleapis/blob/a92cee399e0fc8afa2d460373b1085f543bc8d3f/google/longrunning/operations.proto#L70) or other methods to check whether the cancellation succeeded or whether the operation completed despite cancellation. On successful cancellation, the operation is not deleted; instead, it becomes an operation with an [Operation.error](https://github.com/googleapis/googleapis/blob/a92cee399e0fc8afa2d460373b1085f543bc8d3f/google/longrunning/operations.proto#L144) value with a [google.rpc.Status.code](https://github.com/googleapis/googleapis/blob/a92cee399e0fc8afa2d460373b1085f543bc8d3f/google/rpc/status.proto#L38) of `1`, corresponding to `Code.CANCELLED`."]]
