xref: /openbmc/bmcweb/redfish-core/lib/task.hpp (revision 262d7d4b) 
1 /*
2 // Copyright (c) 2020 Intel Corporation
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 //      http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 */
16 #pragma once
17 
18 #include "node.hpp"
19 
20 #include <boost/asio/post.hpp>
21 #include <boost/asio/steady_timer.hpp>
22 #include <boost/container/flat_map.hpp>
23 #include <task_messages.hpp>
24 
25 #include <chrono>
26 #include <variant>
27 
28 namespace redfish
29 {
30 
31 namespace task
32 {
33 constexpr size_t maxTaskCount = 100; // arbitrary limit
34 
35 static std::deque<std::shared_ptr<struct TaskData>> tasks;
36 
37 constexpr bool completed = true;
38 
39 struct Payload
40 {
41     Payload(const crow::Request& req) :
42         targetUri(req.url), httpOperation(req.methodString()),
43         httpHeaders(nlohmann::json::array())
44 
45     {
46         using field_ns = boost::beast::http::field;
47         constexpr const std::array<boost::beast::http::field, 7>
48             headerWhitelist = {field_ns::accept,     field_ns::accept_encoding,
49                                field_ns::user_agent, field_ns::host,
50                                field_ns::connection, field_ns::content_length,
51                                field_ns::upgrade};
52 
53         jsonBody = nlohmann::json::parse(req.body, nullptr, false);
54         if (jsonBody.is_discarded())
55         {
56             jsonBody = nullptr;
57         }
58 
59         for (const auto& field : req.fields)
60         {
61             if (std::find(headerWhitelist.begin(), headerWhitelist.end(),
62                           field.name()) == headerWhitelist.end())
63             {
64                 continue;
65             }
66             std::string header;
67             header.reserve(field.name_string().size() + 2 +
68                            field.value().size());
69             header += field.name_string();
70             header += ": ";
71             header += field.value();
72             httpHeaders.emplace_back(std::move(header));
73         }
74     }
75     Payload() = delete;
76 
77     std::string targetUri;
78     std::string httpOperation;
79     nlohmann::json httpHeaders;
80     nlohmann::json jsonBody;
81 };
82 
83 struct TaskData : std::enable_shared_from_this<TaskData>
84 {
85   private:
86     TaskData(std::function<bool(boost::system::error_code,
87                                 sdbusplus::message::message&,
88                                 const std::shared_ptr<TaskData>&)>&& handler,
89              const std::string& matchIn, size_t idx) :
90         callback(std::move(handler)),
91         matchStr(matchIn), index(idx),
92         startTime(std::chrono::system_clock::to_time_t(
93             std::chrono::system_clock::now())),
94         status("OK"), state("Running"), messages(nlohmann::json::array()),
95         timer(crow::connections::systemBus->get_io_context())
96 
97     {}
98 
99   public:
100     TaskData() = delete;
101 
102     static std::shared_ptr<TaskData>& createTask(
103         std::function<bool(boost::system::error_code,
104                            sdbusplus::message::message&,
105                            const std::shared_ptr<TaskData>&)>&& handler,
106         const std::string& match)
107     {
108         static size_t lastTask = 0;
109         struct MakeSharedHelper : public TaskData
110         {
111             MakeSharedHelper(
112                 std::function<bool(boost::system::error_code,
113                                    sdbusplus::message::message&,
114                                    const std::shared_ptr<TaskData>&)>&& handler,
115                 const std::string& match2, size_t idx) :
116                 TaskData(std::move(handler), match2, idx)
117             {}
118         };
119 
120         if (tasks.size() >= maxTaskCount)
121         {
122             auto& last = tasks.front();
123 
124             // destroy all references
125             last->timer.cancel();
126             last->match.reset();
127             tasks.pop_front();
128         }
129 
130         return tasks.emplace_back(std::make_shared<MakeSharedHelper>(
131             std::move(handler), match, lastTask++));
132     }
133 
134     void populateResp(crow::Response& res, size_t retryAfterSeconds = 30)
135     {
136         if (!endTime)
137         {
138             res.result(boost::beast::http::status::accepted);
139             std::string strIdx = std::to_string(index);
140             std::string uri = "/redfish/v1/TaskService/Tasks/" + strIdx;
141             res.jsonValue = {{"@odata.id", uri},
142                              {"@odata.type", "#Task.v1_4_3.Task"},
143                              {"Id", strIdx},
144                              {"TaskState", state},
145                              {"TaskStatus", status}};
146             res.addHeader(boost::beast::http::field::location,
147                           uri + "/Monitor");
148             res.addHeader(boost::beast::http::field::retry_after,
149                           std::to_string(retryAfterSeconds));
150         }
151         else if (!gave204)
152         {
153             res.result(boost::beast::http::status::no_content);
154             gave204 = true;
155         }
156     }
157 
158     void finishTask()
159     {
160         endTime = std::chrono::system_clock::to_time_t(
161             std::chrono::system_clock::now());
162     }
163 
164     void extendTimer(const std::chrono::seconds& timeout)
165     {
166         timer.expires_after(timeout);
167         timer.async_wait(
168             [self = shared_from_this()](boost::system::error_code ec) {
169                 if (ec == boost::asio::error::operation_aborted)
170                 {
171                     return; // completed successfully
172                 }
173                 if (!ec)
174                 {
175                     // change ec to error as timer expired
176                     ec = boost::asio::error::operation_aborted;
177                 }
178                 self->match.reset();
179                 sdbusplus::message::message msg;
180                 self->finishTask();
181                 self->state = "Cancelled";
182                 self->status = "Warning";
183                 self->messages.emplace_back(
184                     messages::taskAborted(std::to_string(self->index)));
185                 // Send event :TaskAborted
186                 self->sendTaskEvent(self->state, self->index);
187                 self->callback(ec, msg, self);
188             });
189     }
190 
191     void sendTaskEvent(const std::string_view state, size_t index)
192     {
193         std::string origin =
194             "/redfish/v1/TaskService/Tasks/" + std::to_string(index);
195         std::string resType = "Task";
196         // TaskState enums which should send out an event are:
197         // "Starting" = taskResumed
198         // "Running" = taskStarted
199         // "Suspended" = taskPaused
200         // "Interrupted" = taskPaused
201         // "Pending" = taskPaused
202         // "Stopping" = taskAborted
203         // "Completed" = taskCompletedOK
204         // "Killed" = taskRemoved
205         // "Exception" = taskCompletedWarning
206         // "Cancelled" = taskCancelled
207         if (state == "Starting")
208         {
209             redfish::EventServiceManager::getInstance().sendEvent(
210                 redfish::messages::taskResumed(std::to_string(index)), origin,
211                 resType);
212         }
213         else if (state == "Running")
214         {
215             redfish::EventServiceManager::getInstance().sendEvent(
216                 redfish::messages::taskStarted(std::to_string(index)), origin,
217                 resType);
218         }
219         else if ((state == "Suspended") || (state == "Interrupted") ||
220                  (state == "Pending"))
221         {
222             redfish::EventServiceManager::getInstance().sendEvent(
223                 redfish::messages::taskPaused(std::to_string(index)), origin,
224                 resType);
225         }
226         else if (state == "Stopping")
227         {
228             redfish::EventServiceManager::getInstance().sendEvent(
229                 redfish::messages::taskAborted(std::to_string(index)), origin,
230                 resType);
231         }
232         else if (state == "Completed")
233         {
234             redfish::EventServiceManager::getInstance().sendEvent(
235                 redfish::messages::taskCompletedOK(std::to_string(index)),
236                 origin, resType);
237         }
238         else if (state == "Killed")
239         {
240             redfish::EventServiceManager::getInstance().sendEvent(
241                 redfish::messages::taskRemoved(std::to_string(index)), origin,
242                 resType);
243         }
244         else if (state == "Exception")
245         {
246             redfish::EventServiceManager::getInstance().sendEvent(
247                 redfish::messages::taskCompletedWarning(std::to_string(index)),
248                 origin, resType);
249         }
250         else if (state == "Cancelled")
251         {
252             redfish::EventServiceManager::getInstance().sendEvent(
253                 redfish::messages::taskCancelled(std::to_string(index)), origin,
254                 resType);
255         }
256         else
257         {
258             BMCWEB_LOG_INFO << "sendTaskEvent: No events to send";
259         }
260     }
261 
262     void startTimer(const std::chrono::seconds& timeout)
263     {
264         if (match)
265         {
266             return;
267         }
268         match = std::make_unique<sdbusplus::bus::match::match>(
269             static_cast<sdbusplus::bus::bus&>(*crow::connections::systemBus),
270             matchStr,
271             [self = shared_from_this()](sdbusplus::message::message& message) {
272                 boost::system::error_code ec;
273 
274                 // callback to return True if callback is done, callback needs
275                 // to update status itself if needed
276                 if (self->callback(ec, message, self) == task::completed)
277                 {
278                     self->timer.cancel();
279                     self->finishTask();
280 
281                     // Send event
282                     self->sendTaskEvent(self->state, self->index);
283 
284                     // reset the match after the callback was successful
285                     boost::asio::post(
286                         crow::connections::systemBus->get_io_context(),
287                         [self] { self->match.reset(); });
288                     return;
289                 }
290             });
291 
292         extendTimer(timeout);
293         messages.emplace_back(messages::taskStarted(std::to_string(index)));
294         // Send event : TaskStarted
295         sendTaskEvent(state, index);
296     }
297 
298     std::function<bool(boost::system::error_code, sdbusplus::message::message&,
299                        const std::shared_ptr<TaskData>&)>
300         callback;
301     std::string matchStr;
302     size_t index;
303     time_t startTime;
304     std::string status;
305     std::string state;
306     nlohmann::json messages;
307     boost::asio::steady_timer timer;
308     std::unique_ptr<sdbusplus::bus::match::match> match;
309     std::optional<time_t> endTime;
310     std::optional<Payload> payload;
311     bool gave204 = false;
312     int percentComplete = 0;
313 };
314 
315 } // namespace task
316 
317 class TaskMonitor : public Node
318 {
319   public:
320     TaskMonitor(App& app) :
321         Node((app), "/redfish/v1/TaskService/Tasks/<str>/Monitor/",
322              std::string())
323     {
324         entityPrivileges = {
325             {boost::beast::http::verb::get, {{"Login"}}},
326             {boost::beast::http::verb::head, {{"Login"}}},
327             {boost::beast::http::verb::patch, {{"ConfigureManager"}}},
328             {boost::beast::http::verb::put, {{"ConfigureManager"}}},
329             {boost::beast::http::verb::delete_, {{"ConfigureManager"}}},
330             {boost::beast::http::verb::post, {{"ConfigureManager"}}}};
331     }
332 
333   private:
334     void doGet(crow::Response& res, const crow::Request&,
335                const std::vector<std::string>& params) override
336     {
337         auto asyncResp = std::make_shared<AsyncResp>(res);
338         if (params.size() != 1)
339         {
340             messages::internalError(asyncResp->res);
341             return;
342         }
343 
344         const std::string& strParam = params[0];
345         auto find = std::find_if(
346             task::tasks.begin(), task::tasks.end(),
347             [&strParam](const std::shared_ptr<task::TaskData>& task) {
348                 if (!task)
349                 {
350                     return false;
351                 }
352 
353                 // we compare against the string version as on failure strtoul
354                 // returns 0
355                 return std::to_string(task->index) == strParam;
356             });
357 
358         if (find == task::tasks.end())
359         {
360             messages::resourceNotFound(asyncResp->res, "Monitor", strParam);
361             return;
362         }
363         std::shared_ptr<task::TaskData>& ptr = *find;
364         // monitor expires after 204
365         if (ptr->gave204)
366         {
367             messages::resourceNotFound(asyncResp->res, "Monitor", strParam);
368             return;
369         }
370         ptr->populateResp(asyncResp->res);
371     }
372 };
373 
374 class Task : public Node
375 {
376   public:
377     Task(App& app) :
378         Node((app), "/redfish/v1/TaskService/Tasks/<str>/", std::string())
379     {
380         entityPrivileges = {
381             {boost::beast::http::verb::get, {{"Login"}}},
382             {boost::beast::http::verb::head, {{"Login"}}},
383             {boost::beast::http::verb::patch, {{"ConfigureManager"}}},
384             {boost::beast::http::verb::put, {{"ConfigureManager"}}},
385             {boost::beast::http::verb::delete_, {{"ConfigureManager"}}},
386             {boost::beast::http::verb::post, {{"ConfigureManager"}}}};
387     }
388 
389   private:
390     void doGet(crow::Response& res, const crow::Request&,
391                const std::vector<std::string>& params) override
392     {
393         auto asyncResp = std::make_shared<AsyncResp>(res);
394         if (params.size() != 1)
395         {
396             messages::internalError(asyncResp->res);
397             return;
398         }
399 
400         const std::string& strParam = params[0];
401         auto find = std::find_if(
402             task::tasks.begin(), task::tasks.end(),
403             [&strParam](const std::shared_ptr<task::TaskData>& task) {
404                 if (!task)
405                 {
406                     return false;
407                 }
408 
409                 // we compare against the string version as on failure strtoul
410                 // returns 0
411                 return std::to_string(task->index) == strParam;
412             });
413 
414         if (find == task::tasks.end())
415         {
416             messages::resourceNotFound(asyncResp->res, "Tasks", strParam);
417             return;
418         }
419 
420         std::shared_ptr<task::TaskData>& ptr = *find;
421 
422         asyncResp->res.jsonValue["@odata.type"] = "#Task.v1_4_3.Task";
423         asyncResp->res.jsonValue["Id"] = strParam;
424         asyncResp->res.jsonValue["Name"] = "Task " + strParam;
425         asyncResp->res.jsonValue["TaskState"] = ptr->state;
426         asyncResp->res.jsonValue["StartTime"] =
427             crow::utility::getDateTime(ptr->startTime);
428         if (ptr->endTime)
429         {
430             asyncResp->res.jsonValue["EndTime"] =
431                 crow::utility::getDateTime(*(ptr->endTime));
432         }
433         asyncResp->res.jsonValue["TaskStatus"] = ptr->status;
434         asyncResp->res.jsonValue["Messages"] = ptr->messages;
435         asyncResp->res.jsonValue["@odata.id"] =
436             "/redfish/v1/TaskService/Tasks/" + strParam;
437         if (!ptr->gave204)
438         {
439             asyncResp->res.jsonValue["TaskMonitor"] =
440                 "/redfish/v1/TaskService/Tasks/" + strParam + "/Monitor";
441         }
442         if (ptr->payload)
443         {
444             const task::Payload& p = *(ptr->payload);
445             asyncResp->res.jsonValue["Payload"] = {
446                 {"TargetUri", p.targetUri},
447                 {"HttpOperation", p.httpOperation},
448                 {"HttpHeaders", p.httpHeaders},
449                 {"JsonBody", p.jsonBody.dump()}};
450         }
451         asyncResp->res.jsonValue["PercentComplete"] = ptr->percentComplete;
452     }
453 };
454 
455 class TaskCollection : public Node
456 {
457   public:
458     TaskCollection(App& app) : Node(app, "/redfish/v1/TaskService/Tasks/")
459     {
460         entityPrivileges = {
461             {boost::beast::http::verb::get, {{"Login"}}},
462             {boost::beast::http::verb::head, {{"Login"}}},
463             {boost::beast::http::verb::patch, {{"ConfigureManager"}}},
464             {boost::beast::http::verb::put, {{"ConfigureManager"}}},
465             {boost::beast::http::verb::delete_, {{"ConfigureManager"}}},
466             {boost::beast::http::verb::post, {{"ConfigureManager"}}}};
467     }
468 
469   private:
470     void doGet(crow::Response& res, const crow::Request&,
471                const std::vector<std::string>&) override
472     {
473         auto asyncResp = std::make_shared<AsyncResp>(res);
474         asyncResp->res.jsonValue["@odata.type"] =
475             "#TaskCollection.TaskCollection";
476         asyncResp->res.jsonValue["@odata.id"] = "/redfish/v1/TaskService/Tasks";
477         asyncResp->res.jsonValue["Name"] = "Task Collection";
478         asyncResp->res.jsonValue["Members@odata.count"] = task::tasks.size();
479         nlohmann::json& members = asyncResp->res.jsonValue["Members"];
480         members = nlohmann::json::array();
481 
482         for (const std::shared_ptr<task::TaskData>& task : task::tasks)
483         {
484             if (task == nullptr)
485             {
486                 continue; // shouldn't be possible
487             }
488             members.emplace_back(
489                 nlohmann::json{{"@odata.id", "/redfish/v1/TaskService/Tasks/" +
490                                                  std::to_string(task->index)}});
491         }
492     }
493 };
494 
495 class TaskService : public Node
496 {
497   public:
498     TaskService(App& app) : Node(app, "/redfish/v1/TaskService/")
499     {
500         entityPrivileges = {
501             {boost::beast::http::verb::get, {{"Login"}}},
502             {boost::beast::http::verb::head, {{"Login"}}},
503             {boost::beast::http::verb::patch, {{"ConfigureManager"}}},
504             {boost::beast::http::verb::put, {{"ConfigureManager"}}},
505             {boost::beast::http::verb::delete_, {{"ConfigureManager"}}},
506             {boost::beast::http::verb::post, {{"ConfigureManager"}}}};
507     }
508 
509   private:
510     void doGet(crow::Response& res, const crow::Request&,
511                const std::vector<std::string>&) override
512     {
513         auto asyncResp = std::make_shared<AsyncResp>(res);
514         asyncResp->res.jsonValue["@odata.type"] =
515             "#TaskService.v1_1_4.TaskService";
516         asyncResp->res.jsonValue["@odata.id"] = "/redfish/v1/TaskService";
517         asyncResp->res.jsonValue["Name"] = "Task Service";
518         asyncResp->res.jsonValue["Id"] = "TaskService";
519         asyncResp->res.jsonValue["DateTime"] = crow::utility::dateTimeNow();
520         asyncResp->res.jsonValue["CompletedTaskOverWritePolicy"] = "Oldest";
521 
522         asyncResp->res.jsonValue["LifeCycleEventOnTaskStateChange"] = true;
523 
524         auto health = std::make_shared<HealthPopulate>(asyncResp);
525         health->populate();
526         asyncResp->res.jsonValue["Status"]["State"] = "Enabled";
527         asyncResp->res.jsonValue["ServiceEnabled"] = true;
528         asyncResp->res.jsonValue["Tasks"] = {
529             {"@odata.id", "/redfish/v1/TaskService/Tasks"}};
530     }
531 };
532 
533 } // namespace redfish
534