#120

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Build # #120

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push

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web-flow

Commit Message

Rename sdk-features to features (#1599)

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/temporal-sdk/src/main/java/io/temporal/client/ListWorkflowExecutionIterator.java

/*
 * Copyright (C) 2022 Temporal Technologies, Inc. All Rights Reserved.
 *
 * Copyright (C) 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Modifications copyright (C) 2017 Uber Technologies, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this material except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.temporal.client;

import com.google.protobuf.ByteString;
import io.temporal.api.workflow.v1.WorkflowExecutionInfo;
import io.temporal.api.workflowservice.v1.ListWorkflowExecutionsRequest;
import io.temporal.api.workflowservice.v1.ListWorkflowExecutionsResponse;
import io.temporal.internal.client.external.GenericWorkflowClient;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.Objects;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import javax.annotation.Nonnull;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

class ListWorkflowExecutionIterator implements Iterator<WorkflowExecutionInfo> {
  private static final Logger log = LoggerFactory.getLogger(ListWorkflowExecutionIterator.class);

  private final @Nonnull String query;
  private final @Nonnull String namespace;
  private final int pageSize;
  private final @Nonnull GenericWorkflowClient genericClient;
  private ListWorkflowExecutionsResponse activeResponse;
  private int nextActiveResponseIndex;
  private CompletableFuture<ListWorkflowExecutionsResponse> nextResponse;

  ListWorkflowExecutionIterator(
      @Nonnull String query,
      @Nonnull String namespace,
      int pageSize,
      @Nonnull GenericWorkflowClient genericClient) {
    this.query = Objects.requireNonNull(query, "query");
    this.namespace = Objects.requireNonNull(namespace, "namespace");
    this.pageSize = pageSize;
    this.genericClient = Objects.requireNonNull(genericClient, "genericClient");
  }

  @Override
  public boolean hasNext() {
    if (nextActiveResponseIndex < activeResponse.getExecutionsCount()) {
      return true;
    }
    fetch();
    return nextActiveResponseIndex < activeResponse.getExecutionsCount();
  }

  @Override
  public WorkflowExecutionInfo next() {
    if (hasNext()) {
      return activeResponse.getExecutions(nextActiveResponseIndex++);
    } else {
      throw new NoSuchElementException();
    }
  }

  void fetch() {
    if (nextResponse == null) {
      // if nextResponse is null, it's the end of the iteration through the pages
      return;
    }

    ListWorkflowExecutionsResponse response;
    try {
      response = this.nextResponse.get();
    } catch (InterruptedException e) {
      Thread.currentThread().interrupt();
      throw new RuntimeException(e);
    } catch (ExecutionException e) {
      throw new RuntimeException(e.getCause());
    }

    ByteString nextPageToken = response.getNextPageToken();
    if (!nextPageToken.isEmpty()) {
      ListWorkflowExecutionsRequest request =
          ListWorkflowExecutionsRequest.newBuilder()
              .setNamespace(namespace)
              .setQuery(query)
              .setPageSize(pageSize)
              .setNextPageToken(nextPageToken)
              .build();
      this.nextResponse = genericClient.listWorkflowExecutionsAsync(request);
    } else {
      this.nextResponse = null;
    }

    if (response.getExecutionsCount() == 0 && nextResponse != null) {
      log.warn(
          "[BUG] listWorkflowExecutions received an empty collection with a non-empty nextPageToken");
      // shouldn't be happening, but we want to tolerate it if it does, so we just effectively
      // skip the empty response and wait for the next one in a blocking manner.
      // If this actually ever happens as a normal scenario, this skipping should be reworked to
      // be done asynchronously on a completion of nextResponse future.
      fetch();
      return;
    }

    activeResponse = response;
    nextActiveResponseIndex = 0;
  }

  public void init() {
    ListWorkflowExecutionsRequest request =
        ListWorkflowExecutionsRequest.newBuilder()
            .setNamespace(namespace)
            .setQuery(query)
            .setPageSize(pageSize)
            .build();
    nextResponse = new CompletableFuture<>();
    nextResponse.complete(genericClient.listWorkflowExecutions(request));
    fetch();
  }
}

1	/*
2	* Copyright (C) 2022 Temporal Technologies, Inc. All Rights Reserved.
3	*
4	* Copyright (C) 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
5	*
6	* Modifications copyright (C) 2017 Uber Technologies, Inc.
7	*
8	* Licensed under the Apache License, Version 2.0 (the "License");
9	* you may not use this material except in compliance with the License.
10	* You may obtain a copy of the License at
11	*
12	* http://www.apache.org/licenses/LICENSE-2.0
13	*
14	* Unless required by applicable law or agreed to in writing, software
15	* distributed under the License is distributed on an "AS IS" BASIS,
16	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17	* See the License for the specific language governing permissions and
18	* limitations under the License.
19	*/
20
21	package io.temporal.client;
22
23	import com.google.protobuf.ByteString;
24	import io.temporal.api.workflow.v1.WorkflowExecutionInfo;
25	import io.temporal.api.workflowservice.v1.ListWorkflowExecutionsRequest;
26	import io.temporal.api.workflowservice.v1.ListWorkflowExecutionsResponse;
27	import io.temporal.internal.client.external.GenericWorkflowClient;
28	import java.util.Iterator;
29	import java.util.NoSuchElementException;
30	import java.util.Objects;
31	import java.util.concurrent.CompletableFuture;
32	import java.util.concurrent.ExecutionException;
33	import javax.annotation.Nonnull;
34	import org.slf4j.Logger;
35	import org.slf4j.LoggerFactory;
36
37	class ListWorkflowExecutionIterator implements Iterator<WorkflowExecutionInfo> {
38	private static final Logger log = LoggerFactory.getLogger(ListWorkflowExecutionIterator.class);	×
39
40	private final @Nonnull String query;
41	private final @Nonnull String namespace;
42	private final int pageSize;
43	private final @Nonnull GenericWorkflowClient genericClient;
44	private ListWorkflowExecutionsResponse activeResponse;
45	private int nextActiveResponseIndex;
46	private CompletableFuture<ListWorkflowExecutionsResponse> nextResponse;
47
48	ListWorkflowExecutionIterator(
49	@Nonnull String query,
50	@Nonnull String namespace,
51	int pageSize,
52	@Nonnull GenericWorkflowClient genericClient) {	×
53	this.query = Objects.requireNonNull(query, "query");	×
54	this.namespace = Objects.requireNonNull(namespace, "namespace");	×
55	this.pageSize = pageSize;	×
56	this.genericClient = Objects.requireNonNull(genericClient, "genericClient");	×
57	}	×
58
59	@Override
60	public boolean hasNext() {
61	if (nextActiveResponseIndex < activeResponse.getExecutionsCount()) {	×
62	return true;	×
63	}
64	fetch();	×
65	return nextActiveResponseIndex < activeResponse.getExecutionsCount();	×
66	}
67
68	@Override
69	public WorkflowExecutionInfo next() {
70	if (hasNext()) {	×
71	return activeResponse.getExecutions(nextActiveResponseIndex++);	×
72	} else {
73	throw new NoSuchElementException();	×
74	}
75	}
76
77	void fetch() {
78	if (nextResponse == null) {	×
79	// if nextResponse is null, it's the end of the iteration through the pages
80	return;	×
81	}
82
83	ListWorkflowExecutionsResponse response;
84	try {
85	response = this.nextResponse.get();	×
86	} catch (InterruptedException e) {	×
87	Thread.currentThread().interrupt();	×
88	throw new RuntimeException(e);	×
89	} catch (ExecutionException e) {	×
90	throw new RuntimeException(e.getCause());	×
91	}	×
92
93	ByteString nextPageToken = response.getNextPageToken();	×
94	if (!nextPageToken.isEmpty()) {	×
95	ListWorkflowExecutionsRequest request =
96	ListWorkflowExecutionsRequest.newBuilder()	×
97	.setNamespace(namespace)	×
98	.setQuery(query)	×
99	.setPageSize(pageSize)	×
100	.setNextPageToken(nextPageToken)	×
101	.build();	×
102	this.nextResponse = genericClient.listWorkflowExecutionsAsync(request);	×
103	} else {	×
104	this.nextResponse = null;	×
105	}
106
107	if (response.getExecutionsCount() == 0 && nextResponse != null) {	×
108	log.warn(	×
109	"[BUG] listWorkflowExecutions received an empty collection with a non-empty nextPageToken");
110	// shouldn't be happening, but we want to tolerate it if it does, so we just effectively
111	// skip the empty response and wait for the next one in a blocking manner.
112	// If this actually ever happens as a normal scenario, this skipping should be reworked to
113	// be done asynchronously on a completion of nextResponse future.
114	fetch();	×
115	return;	×
116	}
117
118	activeResponse = response;	×
119	nextActiveResponseIndex = 0;	×
120	}	×
121
122	public void init() {
123	ListWorkflowExecutionsRequest request =
124	ListWorkflowExecutionsRequest.newBuilder()	×
125	.setNamespace(namespace)	×
126	.setQuery(query)	×
127	.setPageSize(pageSize)	×
128	.build();	×
129	nextResponse = new CompletableFuture<>();	×
130	nextResponse.complete(genericClient.listWorkflowExecutions(request));	×
131	fetch();	×
132	}	×
133	}

temporalio / sdk-java / #120

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