MS-562 Add JobMgr and TaskCreator in Scheduler

Former-commit-id: bbaf2b649843e86fc7bbd28ec61e5a990fc5951f

cpp/CHANGELOG.md

@@ -12,6 +12,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - MS-557 - Merge Log.h
 - MS-556 - Add Job Definition in Scheduler
 - MS-558 - Refine status code
+- MS-562 - Add JobMgr and TaskCreator in Scheduler
 
 ## New Feature
 

cpp/src/scheduler/JobMgr.cpp

@@ -0,0 +1,89 @@
+// 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 "JobMgr.h"
+#include "task/Task.h"
+#include "TaskCreator.h"
+
+
+namespace zilliz {
+namespace milvus {
+namespace scheduler {
+
+using namespace engine;
+
+JobMgr::JobMgr(ResourceMgrPtr res_mgr)
+    : res_mgr_(std::move(res_mgr)) {}
+
+void
+JobMgr::Start() {
+    if (not running_) {
+        worker_thread_ = std::thread(&JobMgr::worker_function, this);
+        running_ = true;
+    }
+}
+
+void
+JobMgr::Stop() {
+    if (running_) {
+        this->Put(nullptr);
+        worker_thread_.join();
+        running_ = false;
+    }
+}
+
+void
+JobMgr::Put(const JobPtr &job) {
+    {
+        std::lock_guard<std::mutex> lock(mutex_);
+        queue_.push(job);
+    }
+    cv_.notify_one();
+}
+
+void
+JobMgr::worker_function() {
+    while (running_) {
+        std::unique_lock<std::mutex> lock(mutex_);
+        cv_.wait(lock, [this] { return !queue_.empty(); });
+        auto job = queue_.front();
+        queue_.pop();
+        lock.unlock();
+        if (job == nullptr) {
+            break;
+        }
+
+        auto tasks = build_task(job);
+        auto disk_list = res_mgr_->GetDiskResources();
+        if (!disk_list.empty()) {
+            if (auto disk = disk_list[0].lock()) {
+                for (auto &task : tasks) {
+                    disk->task_table().Put(task);
+                }
+            }
+        }
+    }
+}
+
+std::vector<TaskPtr>
+JobMgr::build_task(const JobPtr &job) {
+    return TaskCreator::Create(job);
+}
+
+}
+}
+}

cpp/src/scheduler/JobMgr.h

@@ -0,0 +1,78 @@
+// 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.
+#pragma once
+
+#include <string>
+#include <vector>
+#include <list>
+#include <queue>
+#include <deque>
+#include <unordered_map>
+#include <thread>
+#include <mutex>
+#include <condition_variable>
+#include <memory>
+
+#include "job/Job.h"
+#include "task/Task.h"
+#include "ResourceMgr.h"
+
+
+namespace zilliz {
+namespace milvus {
+namespace scheduler {
+
+using engine::TaskPtr;
+using engine::ResourceMgrPtr;
+
+class JobMgr {
+public:
+    explicit
+    JobMgr(ResourceMgrPtr res_mgr);
+
+    void
+    Start();
+
+    void
+    Stop();
+
+public:
+    void
+    Put(const JobPtr &job);
+
+private:
+    void
+    worker_function();
+
+    std::vector<TaskPtr>
+    build_task(const JobPtr &job);
+
+private:
+    bool running_ = false;
+    std::queue<JobPtr> queue_;
+
+    std::thread worker_thread_;
+
+    std::mutex mutex_;
+    std::condition_variable cv_;
+
+    ResourceMgrPtr res_mgr_ = nullptr;
+};
+
+}
+}
+}

cpp/src/scheduler/TaskCreator.cpp

@@ -0,0 +1,65 @@
+// 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 "TaskCreator.h"
+
+
+namespace zilliz {
+namespace milvus {
+namespace scheduler {
+
+std::vector<TaskPtr>
+TaskCreator::Create(const JobPtr &job) {
+    switch (job->type()) {
+        case JobType::SEARCH: {
+            return Create(std::static_pointer_cast<SearchJob>(job));
+        }
+        case JobType::DELETE: {
+            return Create(std::static_pointer_cast<DeleteJob>(job));
+        }
+        default: {
+            // TODO: error
+            return std::vector<TaskPtr>();
+        }
+    }
+}
+
+std::vector<TaskPtr>
+TaskCreator::Create(const SearchJobPtr &job) {
+    std::vector<TaskPtr> tasks;
+    for (auto &index_file : job->index_files()) {
+        auto task = std::make_shared<XSearchTask>(index_file.second);
+        tasks.emplace_back(task);
+    }
+
+    return tasks;
+}
+
+std::vector<TaskPtr>
+TaskCreator::Create(const DeleteJobPtr &job) {
+    std::vector<TaskPtr> tasks;
+//    auto task = std::make_shared<XDeleteTask>(job);
+//    tasks.emplace_back(task);
+
+    return tasks;
+}
+
+
+}
+}
+}
+

cpp/src/scheduler/TaskCreator.h

@@ -0,0 +1,61 @@
+// 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.
+#pragma once
+
+#include <string>
+#include <vector>
+#include <list>
+#include <queue>
+#include <deque>
+#include <unordered_map>
+#include <thread>
+#include <mutex>
+#include <condition_variable>
+#include <memory>
+
+#include "job/Job.h"
+#include "job/SearchJob.h"
+#include "job/DeleteJob.h"
+#include "task/Task.h"
+#include "task/SearchTask.h"
+#include "task/DeleteTask.h"
+
+
+namespace zilliz {
+namespace milvus {
+namespace scheduler {
+
+using engine::TaskPtr;
+using engine::XSearchTask;
+using engine::XDeleteTask;
+
+class TaskCreator {
+public:
+    static std::vector<TaskPtr>
+    Create(const JobPtr &job);
+
+public:
+    static std::vector<TaskPtr>
+    Create(const SearchJobPtr &job);
+
+    static std::vector<TaskPtr>
+    Create(const DeleteJobPtr &job);
+};
+
+}
+}
+}

cpp/src/scheduler/job/DeleteJob.h

@@ -14,6 +14,7 @@
 // KIND, either express or implied.  See the License for the
 // specific language governing permissions and limitations
 // under the License.
+#pragma once
 
 #include <string>
 #include <vector>

cpp/src/scheduler/job/Job.h

@@ -14,6 +14,7 @@
 // KIND, either express or implied.  See the License for the
 // specific language governing permissions and limitations
 // under the License.
+#pragma once
 
 #include <string>
 #include <vector>

cpp/src/scheduler/job/SearchJob.h

@@ -14,6 +14,7 @@
 // KIND, either express or implied.  See the License for the
 // specific language governing permissions and limitations
 // under the License.
+#pragma once
 
 #include <string>
 #include <vector>
@@ -78,6 +79,11 @@ public:
         return vectors_;
     }
 
+    Id2IndexMap &
+    index_files() {
+        return index_files_;
+    }
+
 private:
     uint64_t topk_ = 0;
     uint64_t nq_ = 0;