Package io.temporal.common.interceptors

Interface WorkflowInboundCallsInterceptor

All Known Implementing Classes:

BaseRootWorkflowInboundCallsInterceptor, WorkflowInboundCallsInterceptorBase

public interface WorkflowInboundCallsInterceptor

Intercepts inbound calls to the workflow execution on the worker side.

An instance should be created in WorkerInterceptor.interceptWorkflow(WorkflowInboundCallsInterceptor).

The calls to this interceptor are executed under workflow context, all the rules and restrictions on the workflow code apply. See io.temporal.workflow.

Prefer extending WorkflowInboundCallsInterceptorBase and overriding only the methods you need instead of implementing this interface directly. WorkflowInboundCallsInterceptorBase provides correct default implementations to all the methods of this interface.

The implementation must forward all the calls to next, but it may change the input parameters.

See Also:

for a definition of "next"

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	WorkflowInboundCallsInterceptor.QueryInput
static class	WorkflowInboundCallsInterceptor.QueryOutput
static class	WorkflowInboundCallsInterceptor.SignalInput
static class	WorkflowInboundCallsInterceptor.WorkflowInput
static class	WorkflowInboundCallsInterceptor.WorkflowOutput

Method Summary

Modifier and Type	Method	Description
WorkflowInboundCallsInterceptor.WorkflowOutput	execute(WorkflowInboundCallsInterceptor.WorkflowInput input)	Called when workflow main method is called.
WorkflowInboundCallsInterceptor.QueryOutput	handleQuery(WorkflowInboundCallsInterceptor.QueryInput input)	Called when a workflow is queried.
void	handleSignal(WorkflowInboundCallsInterceptor.SignalInput input)	Called when signal is delivered to a workflow execution.
void	init(WorkflowOutboundCallsInterceptor outboundCalls)	Called when workflow class is instantiated.
java.lang.Object	newCallbackThread(java.lang.Runnable runnable, java.lang.String name)	Intercepts creation of a workflow callback thread
java.lang.Object	newWorkflowMethodThread(java.lang.Runnable runnable, java.lang.String name)	Intercepts creation of the workflow main method thread

Method Detail

init

void init(WorkflowOutboundCallsInterceptor outboundCalls)

Called when workflow class is instantiated. May create a WorkflowOutboundCallsInterceptor instance. The instance must forward all the calls to outboundCalls, but it may change the input parameters.

The instance should be passed into the {next.init(newWorkflowOutboundCallsInterceptor)}.

Parameters:

outboundCalls - an existing interceptor instance to be proxied by the interceptor created inside this method

See Also:

for the definition of "next"

execute

WorkflowInboundCallsInterceptor.WorkflowOutput execute(WorkflowInboundCallsInterceptor.WorkflowInput input)

Called when workflow main method is called.

Returns:

result of the workflow execution.

handleSignal

void handleSignal(WorkflowInboundCallsInterceptor.SignalInput input)

Called when signal is delivered to a workflow execution.

handleQuery

WorkflowInboundCallsInterceptor.QueryOutput handleQuery(WorkflowInboundCallsInterceptor.QueryInput input)

Called when a workflow is queried.

newWorkflowMethodThread

@Nonnull
java.lang.Object newWorkflowMethodThread(java.lang.Runnable runnable,
                                         @Nullable
                                         java.lang.String name)

Intercepts creation of the workflow main method thread

Parameters:

runnable - thread function to run

name - name of the thread, optional

Returns:

created workflow thread. Should be treated as a pass-through object that shouldn't be manipulated in any way by the interceptor code.

newCallbackThread

@Nonnull
java.lang.Object newCallbackThread(java.lang.Runnable runnable,
                                   @Nullable
                                   java.lang.String name)

Intercepts creation of a workflow callback thread

Parameters:

runnable - thread function to run

name - name of the thread, optional

Returns:

created workflow thread. Should be treated as a pass-through object that shouldn't be manipulated in any way by the interceptor code.