Class ExecutionsClient (2.3.4)

public class ExecutionsClient implements BackgroundResource

Service Description: Executions is used to start and manage running instances of Workflows called executions.

This class provides the ability to make remote calls to the backing service through method calls that map to API methods. Sample code to get started:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   WorkflowName parent = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]");
   Execution execution = Execution.newBuilder().build();
   Execution response = executionsClient.createExecution(parent, execution);
 }
 

Note: close() needs to be called on the ExecutionsClient object to clean up resources such as threads. In the example above, try-with-resources is used, which automatically calls close().

The surface of this class includes several types of Java methods for each of the API's methods:

  1. A "flattened" method. With this type of method, the fields of the request type have been converted into function parameters. It may be the case that not all fields are available as parameters, and not every API method will have a flattened method entry point.
  2. A "request object" method. This type of method only takes one parameter, a request object, which must be constructed before the call. Not every API method will have a request object method.
  3. A "callable" method. This type of method takes no parameters and returns an immutable API callable object, which can be used to initiate calls to the service.

See the individual methods for example code.

Many parameters require resource names to be formatted in a particular way. To assist with these names, this class includes a format method for each type of name, and additionally a parse method to extract the individual identifiers contained within names that are returned.

This class can be customized by passing in a custom instance of ExecutionsSettings to create(). For example:

To customize credentials:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 ExecutionsSettings executionsSettings =
     ExecutionsSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 ExecutionsClient executionsClient = ExecutionsClient.create(executionsSettings);
 

To customize the endpoint:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 ExecutionsSettings executionsSettings =
     ExecutionsSettings.newBuilder().setEndpoint(myEndpoint).build();
 ExecutionsClient executionsClient = ExecutionsClient.create(executionsSettings);
 

To use REST (HTTP1.1/JSON) transport (instead of gRPC) for sending and receiving requests over the wire:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 ExecutionsSettings executionsSettings =
     ExecutionsSettings.newBuilder()
         .setTransportChannelProvider(
             ExecutionsSettings.defaultHttpJsonTransportProviderBuilder().build())
         .build();
 ExecutionsClient executionsClient = ExecutionsClient.create(executionsSettings);
 

Please refer to the GitHub repository's samples for more quickstart code snippets.

Inheritance

java.lang.Object > ExecutionsClient

Implements

BackgroundResource

Static Methods

create()

public static final ExecutionsClient create()

Constructs an instance of ExecutionsClient with default settings.

Returns
TypeDescription
ExecutionsClient
Exceptions
TypeDescription
IOException

create(ExecutionsSettings settings)

public static final ExecutionsClient create(ExecutionsSettings settings)

Constructs an instance of ExecutionsClient, using the given settings. The channels are created based on the settings passed in, or defaults for any settings that are not set.

Parameter
NameDescription
settingsExecutionsSettings
Returns
TypeDescription
ExecutionsClient
Exceptions
TypeDescription
IOException

create(ExecutionsStub stub)

public static final ExecutionsClient create(ExecutionsStub stub)

Constructs an instance of ExecutionsClient, using the given stub for making calls. This is for advanced usage - prefer using create(ExecutionsSettings).

Parameter
NameDescription
stubExecutionsStub
Returns
TypeDescription
ExecutionsClient

Constructors

ExecutionsClient(ExecutionsSettings settings)

protected ExecutionsClient(ExecutionsSettings settings)

Constructs an instance of ExecutionsClient, using the given settings. This is protected so that it is easy to make a subclass, but otherwise, the static factory methods should be preferred.

Parameter
NameDescription
settingsExecutionsSettings

ExecutionsClient(ExecutionsStub stub)

protected ExecutionsClient(ExecutionsStub stub)
Parameter
NameDescription
stubExecutionsStub

Methods

awaitTermination(long duration, TimeUnit unit)

public boolean awaitTermination(long duration, TimeUnit unit)
Parameters
NameDescription
durationlong
unitTimeUnit
Returns
TypeDescription
boolean
Exceptions
TypeDescription
InterruptedException

cancelExecution(CancelExecutionRequest request)

public final Execution cancelExecution(CancelExecutionRequest request)

Cancels an execution of the given name.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   CancelExecutionRequest request =
       CancelExecutionRequest.newBuilder()
           .setName(
               ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]")
                   .toString())
           .build();
   Execution response = executionsClient.cancelExecution(request);
 }
 
Parameter
NameDescription
requestCancelExecutionRequest

The request object containing all of the parameters for the API call.

Returns
TypeDescription
Execution

cancelExecution(ExecutionName name)

public final Execution cancelExecution(ExecutionName name)

Cancels an execution of the given name.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   ExecutionName name = ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]");
   Execution response = executionsClient.cancelExecution(name);
 }
 
Parameter
NameDescription
nameExecutionName

Required. Name of the execution to be cancelled. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution}

Returns
TypeDescription
Execution

cancelExecution(String name)

public final Execution cancelExecution(String name)

Cancels an execution of the given name.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   String name =
       ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]").toString();
   Execution response = executionsClient.cancelExecution(name);
 }
 
Parameter
NameDescription
nameString

Required. Name of the execution to be cancelled. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution}

Returns
TypeDescription
Execution

cancelExecutionCallable()

public final UnaryCallable<CancelExecutionRequest,Execution> cancelExecutionCallable()

Cancels an execution of the given name.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   CancelExecutionRequest request =
       CancelExecutionRequest.newBuilder()
           .setName(
               ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]")
                   .toString())
           .build();
   ApiFuture<Execution> future = executionsClient.cancelExecutionCallable().futureCall(request);
   // Do something.
   Execution response = future.get();
 }
 
Returns
TypeDescription
UnaryCallable<CancelExecutionRequest,Execution>

close()

public final void close()

createExecution(CreateExecutionRequest request)

public final Execution createExecution(CreateExecutionRequest request)

Creates a new execution using the latest revision of the given workflow.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   CreateExecutionRequest request =
       CreateExecutionRequest.newBuilder()
           .setParent(WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString())
           .setExecution(Execution.newBuilder().build())
           .build();
   Execution response = executionsClient.createExecution(request);
 }
 
Parameter
NameDescription
requestCreateExecutionRequest

The request object containing all of the parameters for the API call.

Returns
TypeDescription
Execution

createExecution(WorkflowName parent, Execution execution)

public final Execution createExecution(WorkflowName parent, Execution execution)

Creates a new execution using the latest revision of the given workflow.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   WorkflowName parent = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]");
   Execution execution = Execution.newBuilder().build();
   Execution response = executionsClient.createExecution(parent, execution);
 }
 
Parameters
NameDescription
parentWorkflowName

Required. Name of the workflow for which an execution should be created. Format: projects/{project}/locations/{location}/workflows/{workflow} The latest revision of the workflow will be used.

executionExecution

Required. Execution to be created.

Returns
TypeDescription
Execution

createExecution(String parent, Execution execution)

public final Execution createExecution(String parent, Execution execution)

Creates a new execution using the latest revision of the given workflow.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   String parent = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString();
   Execution execution = Execution.newBuilder().build();
   Execution response = executionsClient.createExecution(parent, execution);
 }
 
Parameters
NameDescription
parentString

Required. Name of the workflow for which an execution should be created. Format: projects/{project}/locations/{location}/workflows/{workflow} The latest revision of the workflow will be used.

executionExecution

Required. Execution to be created.

Returns
TypeDescription
Execution

createExecutionCallable()

public final UnaryCallable<CreateExecutionRequest,Execution> createExecutionCallable()

Creates a new execution using the latest revision of the given workflow.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   CreateExecutionRequest request =
       CreateExecutionRequest.newBuilder()
           .setParent(WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString())
           .setExecution(Execution.newBuilder().build())
           .build();
   ApiFuture<Execution> future = executionsClient.createExecutionCallable().futureCall(request);
   // Do something.
   Execution response = future.get();
 }
 
Returns
TypeDescription
UnaryCallable<CreateExecutionRequest,Execution>

getExecution(ExecutionName name)

public final Execution getExecution(ExecutionName name)

Returns an execution of the given name.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   ExecutionName name = ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]");
   Execution response = executionsClient.getExecution(name);
 }
 
Parameter
NameDescription
nameExecutionName

Required. Name of the execution to be retrieved. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution}

Returns
TypeDescription
Execution

getExecution(GetExecutionRequest request)

public final Execution getExecution(GetExecutionRequest request)

Returns an execution of the given name.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   GetExecutionRequest request =
       GetExecutionRequest.newBuilder()
           .setName(
               ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]")
                   .toString())
           .setView(ExecutionView.forNumber(0))
           .build();
   Execution response = executionsClient.getExecution(request);
 }
 
Parameter
NameDescription
requestGetExecutionRequest

The request object containing all of the parameters for the API call.

Returns
TypeDescription
Execution

getExecution(String name)

public final Execution getExecution(String name)

Returns an execution of the given name.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   String name =
       ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]").toString();
   Execution response = executionsClient.getExecution(name);
 }
 
Parameter
NameDescription
nameString

Required. Name of the execution to be retrieved. Format: projects/{project}/locations/{location}/workflows/{workflow}/executions/{execution}

Returns
TypeDescription
Execution

getExecutionCallable()

public final UnaryCallable<GetExecutionRequest,Execution> getExecutionCallable()

Returns an execution of the given name.

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   GetExecutionRequest request =
       GetExecutionRequest.newBuilder()
           .setName(
               ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]")
                   .toString())
           .setView(ExecutionView.forNumber(0))
           .build();
   ApiFuture<Execution> future = executionsClient.getExecutionCallable().futureCall(request);
   // Do something.
   Execution response = future.get();
 }
 
Returns
TypeDescription
UnaryCallable<GetExecutionRequest,Execution>

getSettings()

public final ExecutionsSettings getSettings()
Returns
TypeDescription
ExecutionsSettings

getStub()

public ExecutionsStub getStub()
Returns
TypeDescription
ExecutionsStub

isShutdown()

public boolean isShutdown()
Returns
TypeDescription
boolean

isTerminated()

public boolean isTerminated()
Returns
TypeDescription
boolean

listExecutions(ListExecutionsRequest request)

public final ExecutionsClient.ListExecutionsPagedResponse listExecutions(ListExecutionsRequest request)

Returns a list of executions which belong to the workflow with the given name. The method returns executions of all workflow revisions. Returned executions are ordered by their start time (newest first).

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   ListExecutionsRequest request =
       ListExecutionsRequest.newBuilder()
           .setParent(WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setView(ExecutionView.forNumber(0))
           .build();
   for (Execution element : executionsClient.listExecutions(request).iterateAll()) {
     // doThingsWith(element);
   }
 }
 
Parameter
NameDescription
requestListExecutionsRequest

The request object containing all of the parameters for the API call.

Returns
TypeDescription
ExecutionsClient.ListExecutionsPagedResponse

listExecutions(WorkflowName parent)

public final ExecutionsClient.ListExecutionsPagedResponse listExecutions(WorkflowName parent)

Returns a list of executions which belong to the workflow with the given name. The method returns executions of all workflow revisions. Returned executions are ordered by their start time (newest first).

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   WorkflowName parent = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]");
   for (Execution element : executionsClient.listExecutions(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 
Parameter
NameDescription
parentWorkflowName

Required. Name of the workflow for which the executions should be listed. Format: projects/{project}/locations/{location}/workflows/{workflow}

Returns
TypeDescription
ExecutionsClient.ListExecutionsPagedResponse

listExecutions(String parent)

public final ExecutionsClient.ListExecutionsPagedResponse listExecutions(String parent)

Returns a list of executions which belong to the workflow with the given name. The method returns executions of all workflow revisions. Returned executions are ordered by their start time (newest first).

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   String parent = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString();
   for (Execution element : executionsClient.listExecutions(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 
Parameter
NameDescription
parentString

Required. Name of the workflow for which the executions should be listed. Format: projects/{project}/locations/{location}/workflows/{workflow}

Returns
TypeDescription
ExecutionsClient.ListExecutionsPagedResponse

listExecutionsCallable()

public final UnaryCallable<ListExecutionsRequest,ListExecutionsResponse> listExecutionsCallable()

Returns a list of executions which belong to the workflow with the given name. The method returns executions of all workflow revisions. Returned executions are ordered by their start time (newest first).

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   ListExecutionsRequest request =
       ListExecutionsRequest.newBuilder()
           .setParent(WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setView(ExecutionView.forNumber(0))
           .build();
   while (true) {
     ListExecutionsResponse response = executionsClient.listExecutionsCallable().call(request);
     for (Execution element : response.getExecutionsList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }
 
Returns
TypeDescription
UnaryCallable<ListExecutionsRequest,ListExecutionsResponse>

listExecutionsPagedCallable()

public final UnaryCallable<ListExecutionsRequest,ExecutionsClient.ListExecutionsPagedResponse> listExecutionsPagedCallable()

Returns a list of executions which belong to the workflow with the given name. The method returns executions of all workflow revisions. Returned executions are ordered by their start time (newest first).

Sample code:


 // This snippet has been automatically generated for illustrative purposes only.
 // It may require modifications to work in your environment.
 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   ListExecutionsRequest request =
       ListExecutionsRequest.newBuilder()
           .setParent(WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString())
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .setView(ExecutionView.forNumber(0))
           .build();
   ApiFuture<Execution> future =
       executionsClient.listExecutionsPagedCallable().futureCall(request);
   // Do something.
   for (Execution element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }
 
Returns
TypeDescription
UnaryCallable<ListExecutionsRequest,ListExecutionsPagedResponse>

shutdown()

public void shutdown()

shutdownNow()

public void shutdownNow()