| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file 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. |
| */ |
| |
| #ifndef HERON_EXAMPLES_SPOUTS_TEST_WORD_SPOUT_H_ |
| #define HERON_EXAMPLES_SPOUTS_TEST_WORD_SPOUT_H_ |
| |
| #include <unistd.h> |
| |
| #include <map> |
| #include <string> |
| #include <tuple> |
| #include <vector> |
| #include <memory> |
| |
| #include "spout/base-rich-spout.h" |
| #include "spout/ispout-output-collector.h" |
| #include "topology/task-context.h" |
| #include "topology/output-fields-declarer.h" |
| #include "tuple/fields.h" |
| |
| namespace heron { |
| namespace examples { |
| |
| class TestWordSpout : public api::spout::BaseRichSpout { |
| public: |
| TestWordSpout() : nSent_(0), nAcks_(0), nFails_(0) { } |
| virtual ~TestWordSpout() { } |
| virtual void open(std::shared_ptr<api::config::Config> config, |
| std::shared_ptr<api::topology::TaskContext> context, |
| std::shared_ptr<api::spout::ISpoutOutputCollector> collector) { |
| collector_ = collector; |
| context_ = context; |
| words_ = {"nathan", "mike", "jackson", "golda", "bertels"}; |
| iter_ = words_.begin(); |
| } |
| |
| void close() { |
| } |
| |
| virtual void nextTuple() { |
| auto tup = std::make_tuple(*iter_); |
| collector_->emit(tup, ++nSent_); |
| ++iter_; |
| if (iter_ == words_.end()) { iter_ = words_.begin(); } |
| logger_ << "TestWordSpout emitted " << nSent_ |
| << " and got acks for " |
| << nAcks_ << " and fails for " << nFails_; |
| context_->log(logger_); |
| if (nSent_ % 100000 == 0) { |
| logger_ << "TestWordSpout emitted " << nSent_ |
| << " and got acks for " |
| << nAcks_ << " and fails for " << nFails_; |
| context_->log(logger_); |
| } |
| } |
| |
| virtual void ack(int64_t) { |
| ++nAcks_; |
| } |
| virtual void fail(int64_t) { |
| ++nFails_; |
| } |
| |
| virtual void declareOutputFields(std::shared_ptr<api::topology::OutputFieldsDeclarer> declarer) { |
| api::tuple::Fields flds({"word"}); |
| declarer->declare(flds); |
| } |
| |
| private: |
| std::vector<std::string> words_; |
| std::vector<std::string>::iterator iter_; |
| std::shared_ptr<api::spout::ISpoutOutputCollector> collector_; |
| std::shared_ptr<api::topology::TaskContext> context_; |
| int64_t nSent_, nAcks_, nFails_; |
| std::ostringstream logger_; |
| }; |
| |
| extern "C" { |
| TestWordSpout* createTestWordSpout() { |
| return new TestWordSpout(); |
| } |
| } |
| |
| } // namespace examples |
| } // namespace heron |
| |
| #endif // HERON_EXAMPLES_SPOUTS_TEST_WORD_SPOUT_H_ |