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affinity_run.cpp
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148 lines (123 loc) · 3.9 KB
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/*
* 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;
using namespace cache;
//tag::affinity-run[]
/*
* Function class.
*/
struct FuncAffinityRun : compute::ComputeFunc<void>
{
/*
* Default constructor.
*/
FuncAffinityRun()
{
// No-op.
}
/*
* Parameterized constructor.
*/
FuncAffinityRun(std::string cacheName, int32_t key) :
cacheName(cacheName), key(key)
{
// No-op.
}
/**
* Callback.
*/
virtual void Call()
{
Ignite& node = GetIgnite();
Cache<int32_t, std::string> cache = node.GetCache<int32_t, std::string>(cacheName.c_str());
// Peek is a local memory lookup.
std::cout << "Co-located [key= " << key << ", value= " << cache.LocalPeek(key, CachePeekMode::ALL) << "]" << std::endl;
}
std::string cacheName;
int32_t key;
};
/**
* Binary type structure. Defines a set of functions required for type to be serialized and deserialized.
*/
namespace ignite
{
namespace binary
{
template<>
struct BinaryType<FuncAffinityRun>
{
static int32_t GetTypeId()
{
return GetBinaryStringHashCode("FuncAffinityRun");
}
static void GetTypeName(std::string& dst)
{
dst = "FuncAffinityRun";
}
static int32_t GetFieldId(const char* name)
{
return GetBinaryStringHashCode(name);
}
static int32_t GetHashCode(const FuncAffinityRun& obj)
{
return 0;
}
static bool IsNull(const FuncAffinityRun& obj)
{
return false;
}
static void GetNull(FuncAffinityRun& dst)
{
dst = FuncAffinityRun();
}
static void Write(BinaryWriter& writer, const FuncAffinityRun& obj)
{
writer.WriteString("cacheName", obj.cacheName);
writer.WriteInt32("key", obj.key);
}
static void Read(BinaryReader& reader, FuncAffinityRun& dst)
{
dst.cacheName = reader.ReadString("cacheName");
dst.key = reader.ReadInt32("key");
}
};
}
}
int main()
{
IgniteConfiguration cfg;
cfg.springCfgPath = "/path/to/configuration.xml";
Ignite ignite = Ignition::Start(cfg);
// Get cache instance.
Cache<int32_t, std::string> cache = ignite.GetOrCreateCache<int32_t, std::string>("myCache");
// Get binding instance.
IgniteBinding binding = ignite.GetBinding();
// Registering our class as a compute function.
binding.RegisterComputeFunc<FuncAffinityRun>();
// Get compute instance.
compute::Compute compute = ignite.GetCompute();
int key = 1;
// This closure will execute on the remote node where
// data for the given 'key' is located.
compute.AffinityRun(cache.GetName(), key, FuncAffinityRun(cache.GetName(), key));
}
//end::affinity-run[]