#400

Committed 06 Oct 2026 02:56AM UTC coverage: 68.324% (+0.007%) from 68.317%

Build # #400

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push

github

Committed by

web-flow

Commit Message

Mark dev server APIs as stable (#3112)

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74.06

/temporal-sdk/src/main/java/io/temporal/internal/sync/WorkflowThreadImpl.java

package io.temporal.internal.sync;

import com.google.common.base.Preconditions;
import io.temporal.common.context.ContextPropagator;
import io.temporal.failure.CanceledFailure;
import io.temporal.internal.common.NonIdempotentHandle;
import io.temporal.internal.common.SdkFlag;
import io.temporal.internal.context.ContextThreadLocal;
import io.temporal.internal.logging.LoggerTag;
import io.temporal.internal.logging.PrefixedMdc;
import io.temporal.internal.replay.ReplayWorkflowContext;
import io.temporal.internal.worker.WorkflowExecutorCache;
import io.temporal.workflow.Functions;
import io.temporal.workflow.Promise;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Future;
import java.util.concurrent.RejectedExecutionException;
import java.util.function.Supplier;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;

class WorkflowThreadImpl implements WorkflowThread {
  /**
   * Runnable passed to the thread that wraps a runnable passed to the WorkflowThreadImpl
   * constructor.
   */
  class RunnableWrapper implements Runnable {

    private final WorkflowThreadContext threadContext;
    // TODO: Move MDC injection logic into an interceptor as this context shouldn't be leaked
    // to the WorkflowThreadImpl
    private final ReplayWorkflowContext replayWorkflowContext;
    private String originalName;
    private String name;
    private final CancellationScopeImpl cancellationScope;
    private final List<ContextPropagator> contextPropagators;
    private final Map<String, Object> propagatedContexts;

    RunnableWrapper(
        WorkflowThreadContext threadContext,
        ReplayWorkflowContext replayWorkflowContext,
        String name,
        boolean detached,
        CancellationScopeImpl parent,
        Runnable runnable,
        List<ContextPropagator> contextPropagators,
        Map<String, Object> propagatedContexts) {
      this.threadContext = threadContext;
      this.replayWorkflowContext = replayWorkflowContext;
      this.name = name;
      boolean deterministicCancellationScopeOrder =
          replayWorkflowContext.checkSdkFlag(SdkFlag.DETERMINISTIC_CANCELLATION_SCOPE_ORDER);
      this.cancellationScope =
          new CancellationScopeImpl(
              detached, deterministicCancellationScopeOrder, runnable, parent);
      Preconditions.checkState(
          context.getStatus() == Status.CREATED, "threadContext not in CREATED state");
      this.contextPropagators = contextPropagators;
      this.propagatedContexts = propagatedContexts;
    }

    @Override
    public void run() {
      Thread thread = Thread.currentThread();
      originalName = thread.getName();
      thread.setName(name);

      threadContext.initializeCurrentThread(thread);
      DeterministicRunnerImpl.setCurrentThreadInternal(WorkflowThreadImpl.this);

      PrefixedMdc mdc = replayWorkflowContext.getLoggerMdc();
      mdc.put(LoggerTag.WORKFLOW_ID, replayWorkflowContext.getWorkflowId());
      mdc.put(LoggerTag.WORKFLOW_TYPE, replayWorkflowContext.getWorkflowType().getName());
      mdc.put(LoggerTag.RUN_ID, replayWorkflowContext.getRunId());
      mdc.put(LoggerTag.TASK_QUEUE, replayWorkflowContext.getTaskQueue());
      mdc.put(LoggerTag.NAMESPACE, replayWorkflowContext.getNamespace());

      // Repopulate the context(s)
      ContextThreadLocal.setContextPropagators(this.contextPropagators);
      ContextThreadLocal.propagateContextToCurrentThread(this.propagatedContexts);
      try {
        // initialYield blocks thread until the first runUntilBlocked is called.
        // Otherwise, r starts executing without control of the sync.
        threadContext.initialYield();
        cancellationScope.run();
      } catch (DestroyWorkflowThreadError e) {
        if (!threadContext.isDestroyRequested()) {
          threadContext.setUnhandledException(e);
        }
      } catch (Error e) {
        threadContext.setUnhandledException(e);
      } catch (CanceledFailure e) {
        if (!isCancelRequested()) {
          threadContext.setUnhandledException(e);
        }
        if (log.isDebugEnabled()) {
          log.debug(String.format("Workflow thread \"%s\" run canceled", name));
        }
      } catch (Throwable e) {
        threadContext.setUnhandledException(e);
      } finally {
        DeterministicRunnerImpl.setCurrentThreadInternal(null);
        threadContext.makeDone();
        thread.setName(originalName);
        MDC.clear();
      }
    }

    public String getName() {
      return name;
    }

    StackTraceElement[] getStackTrace() {
      @Nullable Thread thread = threadContext.getCurrentThread();
      if (thread != null) {
        return thread.getStackTrace();
      }
      return new StackTraceElement[0];
    }

    public void setName(String name) {
      this.name = name;
      @Nullable Thread thread = threadContext.getCurrentThread();
      if (thread != null) {
        thread.setName(name);
      }
    }
  }

  private static final Logger log = LoggerFactory.getLogger(WorkflowThreadImpl.class);

  private final WorkflowThreadExecutor workflowThreadExecutor;
  private final WorkflowThreadContext context;
  private final WorkflowExecutorCache cache;
  private final SyncWorkflowContext syncWorkflowContext;

  private final DeterministicRunnerImpl runner;
  private final RunnableWrapper task;
  private final int priority;
  private Future<?> taskFuture;
  private final Map<WorkflowThreadLocalInternal<?>, Object> threadLocalMap = new HashMap<>();

  WorkflowThreadImpl(
      WorkflowThreadExecutor workflowThreadExecutor,
      SyncWorkflowContext syncWorkflowContext,
      DeterministicRunnerImpl runner,
      @Nonnull String name,
      int priority,
      boolean detached,
      CancellationScopeImpl parentCancellationScope,
      Runnable runnable,
      WorkflowExecutorCache cache,
      List<ContextPropagator> contextPropagators,
      Map<String, Object> propagatedContexts) {
    this.workflowThreadExecutor = workflowThreadExecutor;
    this.syncWorkflowContext = Preconditions.checkNotNull(syncWorkflowContext);
    this.runner = runner;
    this.context = new WorkflowThreadContext(runner.getLock());
    this.cache = cache;
    this.priority = priority;
    this.task =
        new RunnableWrapper(
            context,
            syncWorkflowContext.getReplayContext(),
            Preconditions.checkNotNull(name, "Thread name shouldn't be null"),
            detached,
            parentCancellationScope,
            runnable,
            contextPropagators,
            propagatedContexts);
  }

  @Override
  public void run() {
    throw new UnsupportedOperationException("not used");
  }

  @Override
  public boolean isDetached() {
    return task.cancellationScope.isDetached();
  }

  @Override
  public void cancel() {
    task.cancellationScope.cancel();
  }

  @Override
  public void cancel(String reason) {
    task.cancellationScope.cancel(reason);
  }

  @Override
  public String getCancellationReason() {
    return task.cancellationScope.getCancellationReason();
  }

  @Override
  public boolean isCancelRequested() {
    return task.cancellationScope.isCancelRequested();
  }

  @Override
  public Promise<String> getCancellationRequest() {
    return task.cancellationScope.getCancellationRequest();
  }

  @Override
  public void start() {
    context.verifyAndStart();
    while (true) {
      try {
        taskFuture = workflowThreadExecutor.submit(task);
        return;
      } catch (RejectedExecutionException e) {
        if (cache != null) {
          SyncWorkflowContext workflowContext = getWorkflowContext();
          ReplayWorkflowContext context = workflowContext.getReplayContext();
          boolean evicted =
              cache.evictAnyNotInProcessing(
                  context.getWorkflowExecution(), workflowContext.getMetricsScope());
          if (!evicted) {
            // Note here we need to throw error, not exception. Otherwise it will be
            // translated to workflow execution exception and instead of failing the
            // workflow task we will be failing the workflow.
            throw new WorkflowRejectedExecutionError(e);
          }
        } else {
          throw new WorkflowRejectedExecutionError(e);
        }
      }
    }
  }

  @Override
  public boolean isStarted() {
    return context.getStatus() != Status.CREATED;
  }

  @Override
  public WorkflowThreadContext getWorkflowThreadContext() {
    return context;
  }

  @Override
  public DeterministicRunnerImpl getRunner() {
    return runner;
  }

  @Override
  public SyncWorkflowContext getWorkflowContext() {
    return syncWorkflowContext;
  }

  @Override
  public void setName(String name) {
    task.setName(name);
  }

  @Override
  public String getName() {
    return task.getName();
  }

  @Override
  public long getId() {
    return hashCode();
  }

  @Override
  public int getPriority() {
    return priority;
  }

  @Override
  public boolean runUntilBlocked(long deadlockDetectionTimeoutMs) {
    if (taskFuture == null) {
      start();
    }
    return context.runUntilBlocked(deadlockDetectionTimeoutMs);
  }

  @Override
  public NonIdempotentHandle lockDeadlockDetector() {
    return context.lockDeadlockDetector();
  }

  @Override
  public boolean isDone() {
    return context.isDone();
  }

  @Override
  public Throwable getUnhandledException() {
    return context.getUnhandledException();
  }

  /**
   * Evaluates function in the threadContext of the coroutine without unblocking it. Used to get
   * current coroutine status, like stack trace.
   *
   * @param function Parameter is reason for current goroutine blockage.
   */
  public void evaluateInCoroutineContext(Functions.Proc1<String> function) {
    context.evaluateInCoroutineContext(function);
  }

  /**
   * Interrupt coroutine by throwing DestroyWorkflowThreadError from an await method it is blocked
   * on and return underlying Future to be waited on.
   */
  @Override
  public Future<?> stopNow() {
    // Cannot call destroy() on itself
    @Nullable Thread thread = context.getCurrentThread();
    if (Thread.currentThread().equals(thread)) {
      throw new Error("Cannot call destroy on itself: " + thread.getName());
    }
    context.initiateDestroy();
    if (taskFuture == null) {
      return getCompletedFuture();
    }
    return taskFuture;
  }

  private Future<?> getCompletedFuture() {
    CompletableFuture<String> f = new CompletableFuture<>();
    f.complete("done");
    return f;
  }

  @Override
  public void addStackTrace(StringBuilder result) {
    result.append(getName());
    @Nullable Thread thread = context.getCurrentThread();
    if (thread == null) {
      result.append("(NEW)");
      return;
    }
    result
        .append(": (BLOCKED on ")
        .append(getWorkflowThreadContext().getYieldReason())
        .append(")\n");
    // These numbers might change if implementation changes.
    int omitTop = 5;
    int omitBottom = 7;
    // TODO it's not a good idea to rely on the name to understand the thread type. Instead of that
    // we would better
    // assign an explicit thread type enum to the threads. This will be especially important when we
    // refactor
    // root and workflow-method
    // thread names into names that will include workflowId
    if (DeterministicRunnerImpl.WORKFLOW_ROOT_THREAD_NAME.equals(getName())) {
      // TODO revisit this number
      omitBottom = 11;
    } else if (getName().startsWith(WorkflowMethodThreadNameStrategy.WORKFLOW_MAIN_THREAD_PREFIX)) {
      // TODO revisit this number
      omitBottom = 11;
    }
    StackTraceElement[] stackTrace = thread.getStackTrace();
    for (int i = omitTop; i < stackTrace.length - omitBottom; i++) {
      StackTraceElement e = stackTrace[i];
      if (i == omitTop && "await".equals(e.getMethodName())) continue;
      result.append(e);
      result.append("\n");
    }
  }

  @Override
  public void yield(String reason, Supplier<Boolean> unblockCondition) {
    context.yield(reason, unblockCondition);
  }

  @Override
  public void exitThread() {
    runner.exit();
    throw new DestroyWorkflowThreadError("exit");
  }

  @Override
  public <T> void setThreadLocal(WorkflowThreadLocalInternal<T> key, T value) {
    threadLocalMap.put(key, value);
  }

  /**
   * Retrieve data from thread locals. Returns 1. not found (an empty Optional) 2. found but null
   * (an Optional of an empty Optional) 3. found and non-null (an Optional of an Optional of a
   * value). The type nesting is because Java Optionals cannot understand "Some null" vs "None",
   * which is exactly what we need here.
   *
   * @param key
   * @return one of three cases
   * @param <T>
   */
  @SuppressWarnings("unchecked")
  public <T> Optional<Optional<T>> getThreadLocal(WorkflowThreadLocalInternal<T> key) {
    if (!threadLocalMap.containsKey(key)) {
      return Optional.empty();
    }
    return Optional.of(Optional.ofNullable((T) threadLocalMap.get(key)));
  }

  /**
   * @return stack trace of the coroutine thread
   */
  @Override
  public String getStackTrace() {
    StackTraceElement[] st = task.getStackTrace();
    StringWriter sw = new StringWriter();
    PrintWriter pw = new PrintWriter(sw);
    pw.append(task.getName());
    pw.append("\n");
    for (StackTraceElement se : st) {
      pw.println("\tat " + se);
    }
    return sw.toString();
  }

  static class YieldWithTimeoutCondition implements Supplier<Boolean> {

    private final Supplier<Boolean> unblockCondition;
    private final long blockedUntil;
    private boolean timedOut;

    YieldWithTimeoutCondition(Supplier<Boolean> unblockCondition, long blockedUntil) {
      this.unblockCondition = unblockCondition;
      this.blockedUntil = blockedUntil;
    }

    boolean isTimedOut() {
      return timedOut;
    }

    /**
     * @return true if condition matched or timed out
     */
    @Override
    public Boolean get() {
      boolean result = unblockCondition.get();
      if (result) {
        return true;
      }
      long currentTimeMillis = WorkflowInternal.currentTimeMillis();
      timedOut = currentTimeMillis >= blockedUntil;
      return timedOut;
    }
  }
}

1	package io.temporal.internal.sync;
2
3	import com.google.common.base.Preconditions;
4	import io.temporal.common.context.ContextPropagator;
5	import io.temporal.failure.CanceledFailure;
6	import io.temporal.internal.common.NonIdempotentHandle;
7	import io.temporal.internal.common.SdkFlag;
8	import io.temporal.internal.context.ContextThreadLocal;
9	import io.temporal.internal.logging.LoggerTag;
10	import io.temporal.internal.logging.PrefixedMdc;
11	import io.temporal.internal.replay.ReplayWorkflowContext;
12	import io.temporal.internal.worker.WorkflowExecutorCache;
13	import io.temporal.workflow.Functions;
14	import io.temporal.workflow.Promise;
15	import java.io.PrintWriter;
16	import java.io.StringWriter;
17	import java.util.HashMap;
18	import java.util.List;
19	import java.util.Map;
20	import java.util.Optional;
21	import java.util.concurrent.CompletableFuture;
22	import java.util.concurrent.Future;
23	import java.util.concurrent.RejectedExecutionException;
24	import java.util.function.Supplier;
25	import javax.annotation.Nonnull;
26	import javax.annotation.Nullable;
27	import org.slf4j.Logger;
28	import org.slf4j.LoggerFactory;
29	import org.slf4j.MDC;
30
31	class WorkflowThreadImpl implements WorkflowThread {
32	/**
33	* Runnable passed to the thread that wraps a runnable passed to the WorkflowThreadImpl
34	* constructor.
35	*/
36	class RunnableWrapper implements Runnable {
37
38	private final WorkflowThreadContext threadContext;
39	// TODO: Move MDC injection logic into an interceptor as this context shouldn't be leaked
40	// to the WorkflowThreadImpl
41	private final ReplayWorkflowContext replayWorkflowContext;
42	private String originalName;
43	private String name;
44	private final CancellationScopeImpl cancellationScope;
45	private final List<ContextPropagator> contextPropagators;
46	private final Map<String, Object> propagatedContexts;
47
48	RunnableWrapper(
49	WorkflowThreadContext threadContext,
50	ReplayWorkflowContext replayWorkflowContext,
51	String name,
52	boolean detached,
53	CancellationScopeImpl parent,
54	Runnable runnable,
55	List<ContextPropagator> contextPropagators,
56	Map<String, Object> propagatedContexts) {	1 ✔
57	this.threadContext = threadContext;	1 ✔
58	this.replayWorkflowContext = replayWorkflowContext;	1 ✔
59	this.name = name;	1 ✔
60	boolean deterministicCancellationScopeOrder =	1 ✔
61	replayWorkflowContext.checkSdkFlag(SdkFlag.DETERMINISTIC_CANCELLATION_SCOPE_ORDER);	1 ✔
62	this.cancellationScope =	1 ✔
63	new CancellationScopeImpl(
64	detached, deterministicCancellationScopeOrder, runnable, parent);
65	Preconditions.checkState(	1 ✔
66	context.getStatus() == Status.CREATED, "threadContext not in CREATED state");	1 !
67	this.contextPropagators = contextPropagators;	1 ✔
68	this.propagatedContexts = propagatedContexts;	1 ✔
69	}	1 ✔
70
71	@Override
72	public void run() {
73	Thread thread = Thread.currentThread();	1 ✔
74	originalName = thread.getName();	1 ✔
75	thread.setName(name);	1 ✔
76
77	threadContext.initializeCurrentThread(thread);	1 ✔
78	DeterministicRunnerImpl.setCurrentThreadInternal(WorkflowThreadImpl.this);	1 ✔
79
80	PrefixedMdc mdc = replayWorkflowContext.getLoggerMdc();	1 ✔
81	mdc.put(LoggerTag.WORKFLOW_ID, replayWorkflowContext.getWorkflowId());	1 ✔
82	mdc.put(LoggerTag.WORKFLOW_TYPE, replayWorkflowContext.getWorkflowType().getName());	1 ✔
83	mdc.put(LoggerTag.RUN_ID, replayWorkflowContext.getRunId());	1 ✔
84	mdc.put(LoggerTag.TASK_QUEUE, replayWorkflowContext.getTaskQueue());	1 ✔
85	mdc.put(LoggerTag.NAMESPACE, replayWorkflowContext.getNamespace());	1 ✔
86
87	// Repopulate the context(s)
88	ContextThreadLocal.setContextPropagators(this.contextPropagators);	1 ✔
89	ContextThreadLocal.propagateContextToCurrentThread(this.propagatedContexts);	1 ✔
90	try {
91	// initialYield blocks thread until the first runUntilBlocked is called.
92	// Otherwise, r starts executing without control of the sync.
93	threadContext.initialYield();	1 ✔
94	cancellationScope.run();	1 ✔
95	} catch (DestroyWorkflowThreadError e) {	1 ✔
96	if (!threadContext.isDestroyRequested()) {	1 ✔
97	threadContext.setUnhandledException(e);	1 ✔
98	}
99	} catch (Error e) {	1 ✔
100	threadContext.setUnhandledException(e);	1 ✔
101	} catch (CanceledFailure e) {	×
102	if (!isCancelRequested()) {	×
103	threadContext.setUnhandledException(e);	×
104	}
105	if (log.isDebugEnabled()) {	×
106	log.debug(String.format("Workflow thread \"%s\" run canceled", name));	×
107	}
108	} catch (Throwable e) {	1 ✔
109	threadContext.setUnhandledException(e);	1 ✔
110	} finally {
111	DeterministicRunnerImpl.setCurrentThreadInternal(null);	1 ✔
112	threadContext.makeDone();	1 ✔
113	thread.setName(originalName);	1 ✔
114	MDC.clear();	1 ✔
115	}
116	}	1 ✔
117
118	public String getName() {
119	return name;	1 ✔
120	}
121
122	StackTraceElement[] getStackTrace() {
123	@Nullable Thread thread = threadContext.getCurrentThread();	1 ✔
124	if (thread != null) {	1 ✔
125	return thread.getStackTrace();	1 ✔
126	}
127	return new StackTraceElement[0];	1 ✔
128	}
129
130	public void setName(String name) {
131	this.name = name;	×
132	@Nullable Thread thread = threadContext.getCurrentThread();	×
133	if (thread != null) {	×
134	thread.setName(name);	×
135	}
136	}	×
137	}
138
139	private static final Logger log = LoggerFactory.getLogger(WorkflowThreadImpl.class);	1 ✔
140
141	private final WorkflowThreadExecutor workflowThreadExecutor;
142	private final WorkflowThreadContext context;
143	private final WorkflowExecutorCache cache;
144	private final SyncWorkflowContext syncWorkflowContext;
145
146	private final DeterministicRunnerImpl runner;
147	private final RunnableWrapper task;
148	private final int priority;
149	private Future<?> taskFuture;
150	private final Map<WorkflowThreadLocalInternal<?>, Object> threadLocalMap = new HashMap<>();	1 ✔
151
152	WorkflowThreadImpl(
153	WorkflowThreadExecutor workflowThreadExecutor,
154	SyncWorkflowContext syncWorkflowContext,
155	DeterministicRunnerImpl runner,
156	@Nonnull String name,
157	int priority,
158	boolean detached,
159	CancellationScopeImpl parentCancellationScope,
160	Runnable runnable,
161	WorkflowExecutorCache cache,
162	List<ContextPropagator> contextPropagators,
163	Map<String, Object> propagatedContexts) {	1 ✔
164	this.workflowThreadExecutor = workflowThreadExecutor;	1 ✔
165	this.syncWorkflowContext = Preconditions.checkNotNull(syncWorkflowContext);	1 ✔
166	this.runner = runner;	1 ✔
167	this.context = new WorkflowThreadContext(runner.getLock());	1 ✔
168	this.cache = cache;	1 ✔
169	this.priority = priority;	1 ✔
170	this.task =	1 ✔
171	new RunnableWrapper(
172	context,
173	syncWorkflowContext.getReplayContext(),	1 ✔
174	Preconditions.checkNotNull(name, "Thread name shouldn't be null"),	1 ✔
175	detached,
176	parentCancellationScope,
177	runnable,
178	contextPropagators,
179	propagatedContexts);
180	}	1 ✔
181
182	@Override
183	public void run() {
184	throw new UnsupportedOperationException("not used");	×
185	}
186
187	@Override
188	public boolean isDetached() {
189	return task.cancellationScope.isDetached();	×
190	}
191
192	@Override
193	public void cancel() {
194	task.cancellationScope.cancel();	1 ✔
195	}	1 ✔
196
197	@Override
198	public void cancel(String reason) {
199	task.cancellationScope.cancel(reason);	1 ✔
200	}	1 ✔
201
202	@Override
203	public String getCancellationReason() {
204	return task.cancellationScope.getCancellationReason();	×
205	}
206
207	@Override
208	public boolean isCancelRequested() {
209	return task.cancellationScope.isCancelRequested();	×
210	}
211
212	@Override
213	public Promise<String> getCancellationRequest() {
214	return task.cancellationScope.getCancellationRequest();	×
215	}
216
217	@Override
218	public void start() {
219	context.verifyAndStart();	1 ✔
220	while (true) {
221	try {
222	taskFuture = workflowThreadExecutor.submit(task);	1 ✔
223	return;	1 ✔
224	} catch (RejectedExecutionException e) {	1 ✔
225	if (cache != null) {	1 ✔
226	SyncWorkflowContext workflowContext = getWorkflowContext();	1 ✔
227	ReplayWorkflowContext context = workflowContext.getReplayContext();	1 ✔
228	boolean evicted =	1 ✔
229	cache.evictAnyNotInProcessing(	1 ✔
230	context.getWorkflowExecution(), workflowContext.getMetricsScope());	1 ✔
231	if (!evicted) {	1 !
232	// Note here we need to throw error, not exception. Otherwise it will be
233	// translated to workflow execution exception and instead of failing the
234	// workflow task we will be failing the workflow.
235	throw new WorkflowRejectedExecutionError(e);	×
236	}
237	} else {	1 ✔
238	throw new WorkflowRejectedExecutionError(e);	1 ✔
239	}
240	}	1 ✔
241	}
242	}
243
244	@Override
245	public boolean isStarted() {
246	return context.getStatus() != Status.CREATED;	×
247	}
248
249	@Override
250	public WorkflowThreadContext getWorkflowThreadContext() {
251	return context;	1 ✔
252	}
253
254	@Override
255	public DeterministicRunnerImpl getRunner() {
256	return runner;	1 ✔
257	}
258
259	@Override
260	public SyncWorkflowContext getWorkflowContext() {
261	return syncWorkflowContext;	1 ✔
262	}
263
264	@Override
265	public void setName(String name) {
266	task.setName(name);	×
267	}	×
268
269	@Override
270	public String getName() {
271	return task.getName();	1 ✔
272	}
273
274	@Override
275	public long getId() {
276	return hashCode();	×
277	}
278
279	@Override
280	public int getPriority() {
281	return priority;	1 ✔
282	}
283
284	@Override
285	public boolean runUntilBlocked(long deadlockDetectionTimeoutMs) {
286	if (taskFuture == null) {	1 ✔
287	start();	1 ✔
288	}
289	return context.runUntilBlocked(deadlockDetectionTimeoutMs);	1 ✔
290	}
291
292	@Override
293	public NonIdempotentHandle lockDeadlockDetector() {
294	return context.lockDeadlockDetector();	1 ✔
295	}
296
297	@Override
298	public boolean isDone() {
299	return context.isDone();	1 ✔
300	}
301
302	@Override
303	public Throwable getUnhandledException() {
304	return context.getUnhandledException();	1 ✔
305	}
306
307	/**
308	* Evaluates function in the threadContext of the coroutine without unblocking it. Used to get
309	* current coroutine status, like stack trace.
310	*
311	* @param function Parameter is reason for current goroutine blockage.
312	*/
313	public void evaluateInCoroutineContext(Functions.Proc1<String> function) {
314	context.evaluateInCoroutineContext(function);	×
315	}	×
316
317	/**
318	* Interrupt coroutine by throwing DestroyWorkflowThreadError from an await method it is blocked
319	* on and return underlying Future to be waited on.
320	*/
321	@Override
322	public Future<?> stopNow() {
323	// Cannot call destroy() on itself
324	@Nullable Thread thread = context.getCurrentThread();	1 ✔
325	if (Thread.currentThread().equals(thread)) {	1 !
326	throw new Error("Cannot call destroy on itself: " + thread.getName());	×
327	}
328	context.initiateDestroy();	1 ✔
329	if (taskFuture == null) {	1 ✔
330	return getCompletedFuture();	1 ✔
331	}
332	return taskFuture;	1 ✔
333	}
334
335	private Future<?> getCompletedFuture() {
336	CompletableFuture<String> f = new CompletableFuture<>();	1 ✔
337	f.complete("done");	1 ✔
338	return f;	1 ✔
339	}
340
341	@Override
342	public void addStackTrace(StringBuilder result) {
343	result.append(getName());	1 ✔
344	@Nullable Thread thread = context.getCurrentThread();	1 ✔
345	if (thread == null) {	1 !
346	result.append("(NEW)");	×
347	return;	×
348	}
349	result	1 ✔
350	.append(": (BLOCKED on ")	1 ✔
351	.append(getWorkflowThreadContext().getYieldReason())	1 ✔
352	.append(")\n");	1 ✔
353	// These numbers might change if implementation changes.
354	int omitTop = 5;	1 ✔
355	int omitBottom = 7;	1 ✔
356	// TODO it's not a good idea to rely on the name to understand the thread type. Instead of that
357	// we would better
358	// assign an explicit thread type enum to the threads. This will be especially important when we
359	// refactor
360	// root and workflow-method
361	// thread names into names that will include workflowId
362	if (DeterministicRunnerImpl.WORKFLOW_ROOT_THREAD_NAME.equals(getName())) {	1 !
363	// TODO revisit this number
364	omitBottom = 11;	×
365	} else if (getName().startsWith(WorkflowMethodThreadNameStrategy.WORKFLOW_MAIN_THREAD_PREFIX)) {	1 ✔
366	// TODO revisit this number
367	omitBottom = 11;	1 ✔
368	}
369	StackTraceElement[] stackTrace = thread.getStackTrace();	1 ✔
370	for (int i = omitTop; i < stackTrace.length - omitBottom; i++) {	1 ✔
371	StackTraceElement e = stackTrace[i];	1 ✔
372	if (i == omitTop && "await".equals(e.getMethodName())) continue;	1 !
373	result.append(e);	1 ✔
374	result.append("\n");	1 ✔
375	}
376	}	1 ✔
377
378	@Override
379	public void yield(String reason, Supplier<Boolean> unblockCondition) {
380	context.yield(reason, unblockCondition);	1 ✔
381	}	1 ✔
382
383	@Override
384	public void exitThread() {
385	runner.exit();	1 ✔
386	throw new DestroyWorkflowThreadError("exit");	1 ✔
387	}
388
389	@Override
390	public <T> void setThreadLocal(WorkflowThreadLocalInternal<T> key, T value) {
391	threadLocalMap.put(key, value);	1 ✔
392	}	1 ✔
393
394	/**
395	* Retrieve data from thread locals. Returns 1. not found (an empty Optional) 2. found but null
396	* (an Optional of an empty Optional) 3. found and non-null (an Optional of an Optional of a
397	* value). The type nesting is because Java Optionals cannot understand "Some null" vs "None",
398	* which is exactly what we need here.
399	*
400	* @param key
401	* @return one of three cases
402	* @param <T>
403	*/
404	@SuppressWarnings("unchecked")
405	public <T> Optional<Optional<T>> getThreadLocal(WorkflowThreadLocalInternal<T> key) {
406	if (!threadLocalMap.containsKey(key)) {	1 ✔
407	return Optional.empty();	1 ✔
408	}
409	return Optional.of(Optional.ofNullable((T) threadLocalMap.get(key)));	1 ✔
410	}
411
412	/**
413	* @return stack trace of the coroutine thread
414	*/
415	@Override
416	public String getStackTrace() {
417	StackTraceElement[] st = task.getStackTrace();	1 ✔
418	StringWriter sw = new StringWriter();	1 ✔
419	PrintWriter pw = new PrintWriter(sw);	1 ✔
420	pw.append(task.getName());	1 ✔
421	pw.append("\n");	1 ✔
422	for (StackTraceElement se : st) {	1 ✔
423	pw.println("\tat " + se);	1 ✔
424	}
425	return sw.toString();	1 ✔
426	}
427
428	static class YieldWithTimeoutCondition implements Supplier<Boolean> {
429
430	private final Supplier<Boolean> unblockCondition;
431	private final long blockedUntil;
432	private boolean timedOut;
433
434	YieldWithTimeoutCondition(Supplier<Boolean> unblockCondition, long blockedUntil) {	×
435	this.unblockCondition = unblockCondition;	×
436	this.blockedUntil = blockedUntil;	×
437	}	×
438
439	boolean isTimedOut() {
440	return timedOut;	×
441	}
442
443	/**
444	* @return true if condition matched or timed out
445	*/
446	@Override
447	public Boolean get() {
448	boolean result = unblockCondition.get();	×
449	if (result) {	×
450	return true;	×
451	}
452	long currentTimeMillis = WorkflowInternal.currentTimeMillis();	×
453	timedOut = currentTimeMillis >= blockedUntil;	×
454	return timedOut;	×
455	}
456	}
457	}

temporalio / sdk-java / #400

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