Page Summary
-
An Operation resource represents a long-running task resulting from a network API call.
-
The Status type provides a standard error model with code, message, and details for API errors.
-
Available methods for operations include cancel, delete, get, list, and wait.
Resource: Operation
This resource represents a long-running operation that is the result of a network API call.
| JSON representation |
|---|
{ "name" : string , "metadata" : { "@type" : string , field1 : ... , ... } , "done" : boolean , // Union field |
name
string
The server-assigned name, which is only unique within the same service that originally returns it. If you use the default HTTP mapping, the name
should be a resource name ending with operations/{unique_id}
.
done
boolean
If the value is false
, it means the operation is still in progress. If true
, the operation is completed, and either error
or response
is available.
result
. The operation result, which can be either an error
or a valid response
. If done
== false
, neither error
nor response
is set. If done
== true
, exactly one of error
or response
can be set. Some services might not provide the result. result
can be only one of the following:error
object (
Status
)
The error result of the operation in case of failure or cancellation.
response
object
A QueryResponse
object, returned if the query operation is successful.
An object containing fields of an arbitrary type. An additional field "@type"
contains a URI identifying the type. Example: { "id": 1234, "@type": "types.example.com/standard/id" }
.
Status
The Status
type defines a logical error model that is suitable for different programming environments, including REST APIs and RPC APIs. It is used by gRPC
. Each Status
message contains three pieces of data: error code, error message, and error details.
You can find out more about this error model and how to work with it in the API Design Guide .
| JSON representation |
|---|
{ "code" : integer , "message" : string , "details" : [ { "@type" : string , field1 : ... , ... } ] } |
| Fields | |
|---|---|
code
|
The status code, which should be an enum value of |
details[]
|
A list of messages that carry the error details. There is a common set of message types for APIs to use. An object containing fields of an arbitrary type. An additional field |
Methods |
|
|---|---|
|
Starts asynchronous cancellation on a long-running operation. |
|
Deletes a long-running operation. |
|
Gets the latest state of a long-running operation. |
|
Lists operations that match the specified filter in the request. |
|
Waits until the specified long-running operation is done or reaches at most a specified timeout, returning the latest state. |


