Class ExecutionsClient (2.1.7)

Version 2.1.7

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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:

 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:

 ExecutionsSettings executionsSettings =
     ExecutionsSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 ExecutionsClient executionsClient = ExecutionsClient.create(executionsSettings);
 

To customize the endpoint:

 ExecutionsSettings executionsSettings =
     ExecutionsSettings.newBuilder().setEndpoint(myEndpoint).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

Inherited Members

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Static Methods

create()

public static final ExecutionsClient create()

Constructs an instance of ExecutionsClient with default settings.

Returns

Type	Description
ExecutionsClient

Exceptions

Type	Description
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

Name	Description
settings	ExecutionsSettings

Returns

Type	Description
ExecutionsClient

Exceptions

Type	Description
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

Name	Description
stub	ExecutionsStub

Returns

Type	Description
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

Name	Description
settings	ExecutionsSettings

ExecutionsClient(ExecutionsStub stub)

protected ExecutionsClient(ExecutionsStub stub)

Parameter

Name	Description
stub	ExecutionsStub

Methods

awaitTermination(long duration, TimeUnit unit)

public boolean awaitTermination(long duration, TimeUnit unit)

Parameters

Name	Description
duration	long
unit	TimeUnit

Returns

Type	Description
boolean

Exceptions

Type	Description
InterruptedException

cancelExecution(CancelExecutionRequest request)

public final Execution cancelExecution(CancelExecutionRequest request)

Cancels an execution of the given name.

Sample code:

 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   CancelExecutionRequest request =
       CancelExecutionRequest.newBuilder()
           .setName(
               ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]")
                   .toString())
           .build();
   Execution response = executionsClient.cancelExecution(request);
 }
 

Parameter

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

Returns

Type	Description
Execution

cancelExecution(ExecutionName name)

public final Execution cancelExecution(ExecutionName name)

Cancels an execution of the given name.

Sample code:

 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   ExecutionName name = ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]");
   Execution response = executionsClient.cancelExecution(name);
 }
 

Parameter

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

Returns

Type	Description
Execution

cancelExecution(String name)

public final Execution cancelExecution(String name)

Cancels an execution of the given name.

Sample code:

 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   String name =
       ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]").toString();
   Execution response = executionsClient.cancelExecution(name);
 }
 

Parameter

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

Returns

Type	Description
Execution

cancelExecutionCallable()

public final UnaryCallable<CancelExecutionRequest,Execution> cancelExecutionCallable()

Cancels an execution of the given name.

Sample code:

 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

Type	Description
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:

 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

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

Returns

Type	Description
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:

 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   WorkflowName parent = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]");
   Execution execution = Execution.newBuilder().build();
   Execution response = executionsClient.createExecution(parent, execution);
 }
 

Parameters

Name	Description
parent	WorkflowName 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.
execution	Execution Required. Execution to be created.

Returns

Type	Description
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:

 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

Name	Description
parent	String 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.
execution	Execution Required. Execution to be created.

Returns

Type	Description
Execution

createExecutionCallable()

public final UnaryCallable<CreateExecutionRequest,Execution> createExecutionCallable()

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

Sample code:

 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

Type	Description
UnaryCallable<CreateExecutionRequest,Execution>

getExecution(ExecutionName name)

public final Execution getExecution(ExecutionName name)

Returns an execution of the given name.

Sample code:

 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   ExecutionName name = ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]");
   Execution response = executionsClient.getExecution(name);
 }
 

Parameter

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

Returns

Type	Description
Execution

getExecution(GetExecutionRequest request)

public final Execution getExecution(GetExecutionRequest request)

Returns an execution of the given name.

Sample code:

 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

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

Returns

Type	Description
Execution

getExecution(String name)

public final Execution getExecution(String name)

Returns an execution of the given name.

Sample code:

 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   String name =
       ExecutionName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]", "[EXECUTION]").toString();
   Execution response = executionsClient.getExecution(name);
 }
 

Parameter

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

Returns

Type	Description
Execution

getExecutionCallable()

public final UnaryCallable<GetExecutionRequest,Execution> getExecutionCallable()

Returns an execution of the given name.

Sample code:

 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

Type	Description
UnaryCallable<GetExecutionRequest,Execution>

getSettings()

public final ExecutionsSettings getSettings()

Returns

Type	Description
ExecutionsSettings

getStub()

public ExecutionsStub getStub()

Returns

Type	Description
ExecutionsStub

isShutdown()

public boolean isShutdown()

Returns

Type	Description
boolean

isTerminated()

public boolean isTerminated()

Returns

Type	Description
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:

 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

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

Returns

Type	Description
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:

 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   WorkflowName parent = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]");
   for (Execution element : executionsClient.listExecutions(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Parameter

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

Returns

Type	Description
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:

 try (ExecutionsClient executionsClient = ExecutionsClient.create()) {
   String parent = WorkflowName.of("[PROJECT]", "[LOCATION]", "[WORKFLOW]").toString();
   for (Execution element : executionsClient.listExecutions(parent).iterateAll()) {
     // doThingsWith(element);
   }
 }
 

Parameter

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

Returns

Type	Description
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:

 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.getResponsesList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }
 

Returns

Type	Description
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:

 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

Type	Description
UnaryCallable<ListExecutionsRequest,ListExecutionsPagedResponse>

shutdown()

public void shutdown()

shutdownNow()

public void shutdownNow()