| /* |
| * 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. |
| */ |
| #include <stdint.h> |
| #include <iostream> |
| #include <sstream> |
| |
| #include <ignite/ignition.h> |
| #include <ignite/compute/compute.h> |
| |
| using namespace ignite; |
| |
| //tag::compute-run[] |
| /* |
| * Function class. |
| */ |
| class PrintWord : public compute::ComputeFunc<void> |
| { |
| friend struct ignite::binary::BinaryType<PrintWord>; |
| public: |
| /* |
| * Default constructor. |
| */ |
| PrintWord() |
| { |
| // No-op. |
| } |
| |
| /* |
| * Constructor. |
| * |
| * @param text Text. |
| */ |
| PrintWord(const std::string& word) : |
| word(word) |
| { |
| // No-op. |
| } |
| |
| /** |
| * Callback. |
| */ |
| virtual void Call() |
| { |
| std::cout << word << std::endl; |
| } |
| |
| /** Word to print. */ |
| std::string word; |
| |
| }; |
| |
| /** |
| * Binary type structure. Defines a set of functions required for type to be serialized and deserialized. |
| */ |
| namespace ignite |
| { |
| namespace binary |
| { |
| template<> |
| struct BinaryType<PrintWord> |
| { |
| static int32_t GetTypeId() |
| { |
| return GetBinaryStringHashCode("PrintWord"); |
| } |
| |
| static void GetTypeName(std::string& dst) |
| { |
| dst = "PrintWord"; |
| } |
| |
| static int32_t GetFieldId(const char* name) |
| { |
| return GetBinaryStringHashCode(name); |
| } |
| |
| static int32_t GetHashCode(const PrintWord& obj) |
| { |
| return 0; |
| } |
| |
| static bool IsNull(const PrintWord& obj) |
| { |
| return false; |
| } |
| |
| static void GetNull(PrintWord& dst) |
| { |
| dst = PrintWord(""); |
| } |
| |
| static void Write(BinaryWriter& writer, const PrintWord& obj) |
| { |
| writer.RawWriter().WriteString(obj.word); |
| } |
| |
| static void Read(BinaryReader& reader, PrintWord& dst) |
| { |
| dst.word = reader.RawReader().ReadString(); |
| } |
| }; |
| } |
| } |
| |
| int main() |
| { |
| IgniteConfiguration cfg; |
| cfg.springCfgPath = "/path/to/configuration.xml"; |
| |
| Ignite ignite = Ignition::Start(cfg); |
| |
| // Get binding instance. |
| IgniteBinding binding = ignite.GetBinding(); |
| |
| // Registering our class as a compute function. |
| binding.RegisterComputeFunc<PrintWord>(); |
| |
| // Get compute instance. |
| compute::Compute compute = ignite.GetCompute(); |
| |
| std::istringstream iss("Print words on different cluster nodes"); |
| std::vector<std::string> words((std::istream_iterator<std::string>(iss)), |
| std::istream_iterator<std::string>()); |
| |
| // Iterate through all words and print |
| // each word on a different cluster node. |
| for (std::string word : words) |
| { |
| // Run compute task. |
| compute.Run(PrintWord(word)); |
| } |
| } |
| //end::compute-run[] |