Examples with MetadataOperationContext org.apache.kafka.clients.admin.internals.MetadataOperationContext used on opensource projects

Example 1 with MetadataOperationContext

use of org.apache.kafka.clients.admin.internals.MetadataOperationContext in project kafka by apache.

the class KafkaAdminClient method listOffsets.

@Override
public ListOffsetsResult listOffsets(Map<TopicPartition, OffsetSpec> topicPartitionOffsets, ListOffsetsOptions options) {
    // preparing topics list for asking metadata about them
    final Map<TopicPartition, KafkaFutureImpl<ListOffsetsResultInfo>> futures = new HashMap<>(topicPartitionOffsets.size());
    final Set<String> topics = new HashSet<>();
    for (TopicPartition topicPartition : topicPartitionOffsets.keySet()) {
        topics.add(topicPartition.topic());
        futures.put(topicPartition, new KafkaFutureImpl<>());
    }
    final long nowMetadata = time.milliseconds();
    final long deadline = calcDeadlineMs(nowMetadata, options.timeoutMs());
    MetadataOperationContext<ListOffsetsResultInfo, ListOffsetsOptions> context = new MetadataOperationContext<>(topics, options, deadline, futures);
    Call metadataCall = getMetadataCall(context, () -> KafkaAdminClient.this.getListOffsetsCalls(context, topicPartitionOffsets, futures));
    runnable.call(metadataCall, nowMetadata);
    return new ListOffsetsResult(new HashMap<>(futures));
}

Example 2 with MetadataOperationContext

use of org.apache.kafka.clients.admin.internals.MetadataOperationContext in project kafka by apache.

the class KafkaAdminClient method getListOffsetsCalls.

// visible for benchmark
List<Call> getListOffsetsCalls(MetadataOperationContext<ListOffsetsResultInfo, ListOffsetsOptions> context, Map<TopicPartition, OffsetSpec> topicPartitionOffsets, Map<TopicPartition, KafkaFutureImpl<ListOffsetsResultInfo>> futures) {
    MetadataResponse mr = context.response().orElseThrow(() -> new IllegalStateException("No Metadata response"));
    Cluster clusterSnapshot = mr.buildCluster();
    List<Call> calls = new ArrayList<>();
    // grouping topic partitions per leader
    Map<Node, Map<String, ListOffsetsTopic>> leaders = new HashMap<>();
    for (Map.Entry<TopicPartition, OffsetSpec> entry : topicPartitionOffsets.entrySet()) {
        OffsetSpec offsetSpec = entry.getValue();
        TopicPartition tp = entry.getKey();
        KafkaFutureImpl<ListOffsetsResultInfo> future = futures.get(tp);
        long offsetQuery = getOffsetFromOffsetSpec(offsetSpec);
        // avoid sending listOffsets request for topics with errors
        if (!mr.errors().containsKey(tp.topic())) {
            Node node = clusterSnapshot.leaderFor(tp);
            if (node != null) {
                Map<String, ListOffsetsTopic> leadersOnNode = leaders.computeIfAbsent(node, k -> new HashMap<>());
                ListOffsetsTopic topic = leadersOnNode.computeIfAbsent(tp.topic(), k -> new ListOffsetsTopic().setName(tp.topic()));
                topic.partitions().add(new ListOffsetsPartition().setPartitionIndex(tp.partition()).setTimestamp(offsetQuery));
            } else {
                future.completeExceptionally(Errors.LEADER_NOT_AVAILABLE.exception());
            }
        } else {
            future.completeExceptionally(mr.errors().get(tp.topic()).exception());
        }
    }
    for (final Map.Entry<Node, Map<String, ListOffsetsTopic>> entry : leaders.entrySet()) {
        final int brokerId = entry.getKey().id();
        calls.add(new Call("listOffsets on broker " + brokerId, context.deadline(), new ConstantNodeIdProvider(brokerId)) {

            final List<ListOffsetsTopic> partitionsToQuery = new ArrayList<>(entry.getValue().values());

            private boolean supportsMaxTimestamp = partitionsToQuery.stream().flatMap(t -> t.partitions().stream()).anyMatch(p -> p.timestamp() == ListOffsetsRequest.MAX_TIMESTAMP);

            @Override
            ListOffsetsRequest.Builder createRequest(int timeoutMs) {
                return ListOffsetsRequest.Builder.forConsumer(true, context.options().isolationLevel(), supportsMaxTimestamp).setTargetTimes(partitionsToQuery);
            }

            @Override
            void handleResponse(AbstractResponse abstractResponse) {
                ListOffsetsResponse response = (ListOffsetsResponse) abstractResponse;
                Map<TopicPartition, OffsetSpec> retryTopicPartitionOffsets = new HashMap<>();
                for (ListOffsetsTopicResponse topic : response.topics()) {
                    for (ListOffsetsPartitionResponse partition : topic.partitions()) {
                        TopicPartition tp = new TopicPartition(topic.name(), partition.partitionIndex());
                        KafkaFutureImpl<ListOffsetsResultInfo> future = futures.get(tp);
                        Errors error = Errors.forCode(partition.errorCode());
                        OffsetSpec offsetRequestSpec = topicPartitionOffsets.get(tp);
                        if (offsetRequestSpec == null) {
                            log.warn("Server response mentioned unknown topic partition {}", tp);
                        } else if (MetadataOperationContext.shouldRefreshMetadata(error)) {
                            retryTopicPartitionOffsets.put(tp, offsetRequestSpec);
                        } else if (error == Errors.NONE) {
                            Optional<Integer> leaderEpoch = (partition.leaderEpoch() == ListOffsetsResponse.UNKNOWN_EPOCH) ? Optional.empty() : Optional.of(partition.leaderEpoch());
                            future.complete(new ListOffsetsResultInfo(partition.offset(), partition.timestamp(), leaderEpoch));
                        } else {
                            future.completeExceptionally(error.exception());
                        }
                    }
                }
                if (retryTopicPartitionOffsets.isEmpty()) {
                    // The server should send back a response for every topic partition. But do a sanity check anyway.
                    for (ListOffsetsTopic topic : partitionsToQuery) {
                        for (ListOffsetsPartition partition : topic.partitions()) {
                            TopicPartition tp = new TopicPartition(topic.name(), partition.partitionIndex());
                            ApiException error = new ApiException("The response from broker " + brokerId + " did not contain a result for topic partition " + tp);
                            futures.get(tp).completeExceptionally(error);
                        }
                    }
                } else {
                    Set<String> retryTopics = retryTopicPartitionOffsets.keySet().stream().map(TopicPartition::topic).collect(Collectors.toSet());
                    MetadataOperationContext<ListOffsetsResultInfo, ListOffsetsOptions> retryContext = new MetadataOperationContext<>(retryTopics, context.options(), context.deadline(), futures);
                    rescheduleMetadataTask(retryContext, () -> getListOffsetsCalls(retryContext, retryTopicPartitionOffsets, futures));
                }
            }

            @Override
            void handleFailure(Throwable throwable) {
                for (ListOffsetsTopic topic : entry.getValue().values()) {
                    for (ListOffsetsPartition partition : topic.partitions()) {
                        TopicPartition tp = new TopicPartition(topic.name(), partition.partitionIndex());
                        KafkaFutureImpl<ListOffsetsResultInfo> future = futures.get(tp);
                        future.completeExceptionally(throwable);
                    }
                }
            }

            @Override
            boolean handleUnsupportedVersionException(UnsupportedVersionException exception) {
                if (supportsMaxTimestamp) {
                    supportsMaxTimestamp = false;
                    // fail any unsupported futures and remove partitions from the downgraded retry
                    Iterator<ListOffsetsTopic> topicIterator = partitionsToQuery.iterator();
                    while (topicIterator.hasNext()) {
                        ListOffsetsTopic topic = topicIterator.next();
                        Iterator<ListOffsetsPartition> partitionIterator = topic.partitions().iterator();
                        while (partitionIterator.hasNext()) {
                            ListOffsetsPartition partition = partitionIterator.next();
                            if (partition.timestamp() == ListOffsetsRequest.MAX_TIMESTAMP) {
                                futures.get(new TopicPartition(topic.name(), partition.partitionIndex())).completeExceptionally(new UnsupportedVersionException("Broker " + brokerId + " does not support MAX_TIMESTAMP offset spec"));
                                partitionIterator.remove();
                            }
                        }
                        if (topic.partitions().isEmpty()) {
                            topicIterator.remove();
                        }
                    }
                    return !partitionsToQuery.isEmpty();
                }
                return false;
            }
        });
    }
    return calls;
}