xref: /openbmc/bmcweb/redfish-core/lib/task.hpp (revision 81d523a7) 
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 <app.hpp>
19 #include <boost/asio/post.hpp>
20 #include <boost/asio/steady_timer.hpp>
21 #include <dbus_utility.hpp>
22 #include <query.hpp>
23 #include <registries/privilege_registry.hpp>
24 #include <task_messages.hpp>
25 
26 #include <chrono>
27 #include <variant>
28 
29 namespace redfish
30 {
31 
32 namespace task
33 {
34 constexpr size_t maxTaskCount = 100; // arbitrary limit
35 
36 static std::deque<std::shared_ptr<struct TaskData>> tasks;
37 
38 constexpr bool completed = true;
39 
40 struct Payload
41 {
42     Payload(const crow::Request& req) :
43         targetUri(req.url), httpOperation(req.methodString()),
44         httpHeaders(nlohmann::json::array())
45 
46     {
47         using field_ns = boost::beast::http::field;
48         constexpr const std::array<boost::beast::http::field, 7>
49             headerWhitelist = {field_ns::accept,     field_ns::accept_encoding,
50                                field_ns::user_agent, field_ns::host,
51                                field_ns::connection, field_ns::content_length,
52                                field_ns::upgrade};
53 
54         jsonBody = nlohmann::json::parse(req.body, nullptr, false);
55         if (jsonBody.is_discarded())
56         {
57             jsonBody = nullptr;
58         }
59 
60         for (const auto& field : req.fields)
61         {
62             if (std::find(headerWhitelist.begin(), headerWhitelist.end(),
63                           field.name()) == headerWhitelist.end())
64             {
65                 continue;
66             }
67             std::string header;
68             header.reserve(field.name_string().size() + 2 +
69                            field.value().size());
70             header += field.name_string();
71             header += ": ";
72             header += field.value();
73             httpHeaders.emplace_back(std::move(header));
74         }
75     }
76     Payload() = delete;
77 
78     std::string targetUri;
79     std::string httpOperation;
80     nlohmann::json httpHeaders;
81     nlohmann::json jsonBody;
82 };
83 
84 struct TaskData : std::enable_shared_from_this<TaskData>
85 {
86   private:
87     TaskData(std::function<bool(boost::system::error_code,
88                                 sdbusplus::message::message&,
89                                 const std::shared_ptr<TaskData>&)>&& handler,
90              const std::string& matchIn, size_t idx) :
91         callback(std::move(handler)),
92         matchStr(matchIn), index(idx),
93         startTime(std::chrono::system_clock::to_time_t(
94             std::chrono::system_clock::now())),
95         status("OK"), state("Running"), messages(nlohmann::json::array()),
96         timer(crow::connections::systemBus->get_io_context())
97 
98     {}
99 
100   public:
101     TaskData() = delete;
102 
103     static std::shared_ptr<TaskData>& createTask(
104         std::function<bool(boost::system::error_code,
105                            sdbusplus::message::message&,
106                            const std::shared_ptr<TaskData>&)>&& handler,
107         const std::string& match)
108     {
109         static size_t lastTask = 0;
110         struct MakeSharedHelper : public TaskData
111         {
112             MakeSharedHelper(
113                 std::function<bool(boost::system::error_code,
114                                    sdbusplus::message::message&,
115                                    const std::shared_ptr<TaskData>&)>&& handler,
116                 const std::string& match2, size_t idx) :
117                 TaskData(std::move(handler), match2, idx)
118             {}
119         };
120 
121         if (tasks.size() >= maxTaskCount)
122         {
123             auto& last = tasks.front();
124 
125             // destroy all references
126             last->timer.cancel();
127             last->match.reset();
128             tasks.pop_front();
129         }
130 
131         return tasks.emplace_back(std::make_shared<MakeSharedHelper>(
132             std::move(handler), match, lastTask++));
133     }
134 
135     void populateResp(crow::Response& res, size_t retryAfterSeconds = 30)
136     {
137         if (!endTime)
138         {
139             res.result(boost::beast::http::status::accepted);
140             std::string strIdx = std::to_string(index);
141             std::string uri = "/redfish/v1/TaskService/Tasks/" + strIdx;
142 
143             res.jsonValue["@odata.id"] = uri;
144             res.jsonValue["@odata.type"] = "#Task.v1_4_3.Task";
145             res.jsonValue["Id"] = strIdx;
146             res.jsonValue["TaskState"] = state;
147             res.jsonValue["TaskStatus"] = status;
148 
149             res.addHeader(boost::beast::http::field::location,
150                           uri + "/Monitor");
151             res.addHeader(boost::beast::http::field::retry_after,
152                           std::to_string(retryAfterSeconds));
153         }
154         else if (!gave204)
155         {
156             res.result(boost::beast::http::status::no_content);
157             gave204 = true;
158         }
159     }
160 
161     void finishTask()
162     {
163         endTime = std::chrono::system_clock::to_time_t(
164             std::chrono::system_clock::now());
165     }
166 
167     void extendTimer(const std::chrono::seconds& timeout)
168     {
169         timer.expires_after(timeout);
170         timer.async_wait(
171             [self = shared_from_this()](boost::system::error_code ec) {
172             if (ec == boost::asio::error::operation_aborted)
173             {
174                 return; // completed successfully
175             }
176             if (!ec)
177             {
178                 // change ec to error as timer expired
179                 ec = boost::asio::error::operation_aborted;
180             }
181             self->match.reset();
182             sdbusplus::message::message msg;
183             self->finishTask();
184             self->state = "Cancelled";
185             self->status = "Warning";
186             self->messages.emplace_back(
187                 messages::taskAborted(std::to_string(self->index)));
188             // Send event :TaskAborted
189             self->sendTaskEvent(self->state, self->index);
190             self->callback(ec, msg, self);
191         });
192     }
193 
194     static void sendTaskEvent(const std::string_view state, size_t index)
195     {
196         std::string origin =
197             "/redfish/v1/TaskService/Tasks/" + std::to_string(index);
198         std::string resType = "Task";
199         // TaskState enums which should send out an event are:
200         // "Starting" = taskResumed
201         // "Running" = taskStarted
202         // "Suspended" = taskPaused
203         // "Interrupted" = taskPaused
204         // "Pending" = taskPaused
205         // "Stopping" = taskAborted
206         // "Completed" = taskCompletedOK
207         // "Killed" = taskRemoved
208         // "Exception" = taskCompletedWarning
209         // "Cancelled" = taskCancelled
210         if (state == "Starting")
211         {
212             redfish::EventServiceManager::getInstance().sendEvent(
213                 redfish::messages::taskResumed(std::to_string(index)), origin,
214                 resType);
215         }
216         else if (state == "Running")
217         {
218             redfish::EventServiceManager::getInstance().sendEvent(
219                 redfish::messages::taskStarted(std::to_string(index)), origin,
220                 resType);
221         }
222         else if ((state == "Suspended") || (state == "Interrupted") ||
223                  (state == "Pending"))
224         {
225             redfish::EventServiceManager::getInstance().sendEvent(
226                 redfish::messages::taskPaused(std::to_string(index)), origin,
227                 resType);
228         }
229         else if (state == "Stopping")
230         {
231             redfish::EventServiceManager::getInstance().sendEvent(
232                 redfish::messages::taskAborted(std::to_string(index)), origin,
233                 resType);
234         }
235         else if (state == "Completed")
236         {
237             redfish::EventServiceManager::getInstance().sendEvent(
238                 redfish::messages::taskCompletedOK(std::to_string(index)),
239                 origin, resType);
240         }
241         else if (state == "Killed")
242         {
243             redfish::EventServiceManager::getInstance().sendEvent(
244                 redfish::messages::taskRemoved(std::to_string(index)), origin,
245                 resType);
246         }
247         else if (state == "Exception")
248         {
249             redfish::EventServiceManager::getInstance().sendEvent(
250                 redfish::messages::taskCompletedWarning(std::to_string(index)),
251                 origin, resType);
252         }
253         else if (state == "Cancelled")
254         {
255             redfish::EventServiceManager::getInstance().sendEvent(
256                 redfish::messages::taskCancelled(std::to_string(index)), origin,
257                 resType);
258         }
259         else
260         {
261             BMCWEB_LOG_INFO << "sendTaskEvent: No events to send";
262         }
263     }
264 
265     void startTimer(const std::chrono::seconds& timeout)
266     {
267         if (match)
268         {
269             return;
270         }
271         match = std::make_unique<sdbusplus::bus::match::match>(
272             static_cast<sdbusplus::bus::bus&>(*crow::connections::systemBus),
273             matchStr,
274             [self = shared_from_this()](sdbusplus::message::message& message) {
275             boost::system::error_code ec;
276 
277             // callback to return True if callback is done, callback needs
278             // to update status itself if needed
279             if (self->callback(ec, message, self) == task::completed)
280             {
281                 self->timer.cancel();
282                 self->finishTask();
283 
284                 // Send event
285                 self->sendTaskEvent(self->state, self->index);
286 
287                 // reset the match after the callback was successful
288                 boost::asio::post(
289                     crow::connections::systemBus->get_io_context(),
290                     [self] { self->match.reset(); });
291                 return;
292             }
293             });
294 
295         extendTimer(timeout);
296         messages.emplace_back(messages::taskStarted(std::to_string(index)));
297         // Send event : TaskStarted
298         sendTaskEvent(state, index);
299     }
300 
301     std::function<bool(boost::system::error_code, sdbusplus::message::message&,
302                        const std::shared_ptr<TaskData>&)>
303         callback;
304     std::string matchStr;
305     size_t index;
306     time_t startTime;
307     std::string status;
308     std::string state;
309     nlohmann::json messages;
310     boost::asio::steady_timer timer;
311     std::unique_ptr<sdbusplus::bus::match::match> match;
312     std::optional<time_t> endTime;
313     std::optional<Payload> payload;
314     bool gave204 = false;
315     int percentComplete = 0;
316 };
317 
318 } // namespace task
319 
320 inline void requestRoutesTaskMonitor(App& app)
321 {
322     BMCWEB_ROUTE(app, "/redfish/v1/TaskService/Tasks/<str>/Monitor/")
323         .privileges(redfish::privileges::getTask)
324         .methods(boost::beast::http::verb::get)(
325             [&app](const crow::Request& req,
326                    const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
327                    const std::string& strParam) {
328         if (!redfish::setUpRedfishRoute(app, req, asyncResp))
329         {
330             return;
331         }
332         auto find = std::find_if(
333             task::tasks.begin(), task::tasks.end(),
334             [&strParam](const std::shared_ptr<task::TaskData>& task) {
335             if (!task)
336             {
337                 return false;
338             }
339 
340             // we compare against the string version as on failure
341             // strtoul returns 0
342             return std::to_string(task->index) == strParam;
343             });
344 
345         if (find == task::tasks.end())
346         {
347             messages::resourceNotFound(asyncResp->res, "Monitor", strParam);
348             return;
349         }
350         std::shared_ptr<task::TaskData>& ptr = *find;
351         // monitor expires after 204
352         if (ptr->gave204)
353         {
354             messages::resourceNotFound(asyncResp->res, "Monitor", strParam);
355             return;
356         }
357         ptr->populateResp(asyncResp->res);
358         });
359 }
360 
361 inline void requestRoutesTask(App& app)
362 {
363     BMCWEB_ROUTE(app, "/redfish/v1/TaskService/Tasks/<str>/")
364         .privileges(redfish::privileges::getTask)
365         .methods(boost::beast::http::verb::get)(
366             [&app](const crow::Request& req,
367                    const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
368                    const std::string& strParam) {
369         if (!redfish::setUpRedfishRoute(app, req, asyncResp))
370         {
371             return;
372         }
373         auto find = std::find_if(
374             task::tasks.begin(), task::tasks.end(),
375             [&strParam](const std::shared_ptr<task::TaskData>& task) {
376             if (!task)
377             {
378                 return false;
379             }
380 
381             // we compare against the string version as on failure
382             // strtoul returns 0
383             return std::to_string(task->index) == strParam;
384             });
385 
386         if (find == task::tasks.end())
387         {
388             messages::resourceNotFound(asyncResp->res, "Tasks", strParam);
389             return;
390         }
391 
392         std::shared_ptr<task::TaskData>& ptr = *find;
393 
394         asyncResp->res.jsonValue["@odata.type"] = "#Task.v1_4_3.Task";
395         asyncResp->res.jsonValue["Id"] = strParam;
396         asyncResp->res.jsonValue["Name"] = "Task " + strParam;
397         asyncResp->res.jsonValue["TaskState"] = ptr->state;
398         asyncResp->res.jsonValue["StartTime"] =
399             crow::utility::getDateTimeStdtime(ptr->startTime);
400         if (ptr->endTime)
401         {
402             asyncResp->res.jsonValue["EndTime"] =
403                 crow::utility::getDateTimeStdtime(*(ptr->endTime));
404         }
405         asyncResp->res.jsonValue["TaskStatus"] = ptr->status;
406         asyncResp->res.jsonValue["Messages"] = ptr->messages;
407         asyncResp->res.jsonValue["@odata.id"] =
408             "/redfish/v1/TaskService/Tasks/" + strParam;
409         if (!ptr->gave204)
410         {
411             asyncResp->res.jsonValue["TaskMonitor"] =
412                 "/redfish/v1/TaskService/Tasks/" + strParam + "/Monitor";
413         }
414         if (ptr->payload)
415         {
416             const task::Payload& p = *(ptr->payload);
417             asyncResp->res.jsonValue["Payload"]["TargetUri"] = p.targetUri;
418             asyncResp->res.jsonValue["Payload"]["HttpOperation"] =
419                 p.httpOperation;
420             asyncResp->res.jsonValue["Payload"]["HttpHeaders"] = p.httpHeaders;
421             asyncResp->res.jsonValue["Payload"]["JsonBody"] = p.jsonBody.dump(
422                 2, ' ', true, nlohmann::json::error_handler_t::replace);
423         }
424         asyncResp->res.jsonValue["PercentComplete"] = ptr->percentComplete;
425         });
426 }
427 
428 inline void requestRoutesTaskCollection(App& app)
429 {
430     BMCWEB_ROUTE(app, "/redfish/v1/TaskService/Tasks/")
431         .privileges(redfish::privileges::getTaskCollection)
432         .methods(boost::beast::http::verb::get)(
433             [&app](const crow::Request& req,
434                    const std::shared_ptr<bmcweb::AsyncResp>& asyncResp) {
435         if (!redfish::setUpRedfishRoute(app, req, asyncResp))
436         {
437             return;
438         }
439         asyncResp->res.jsonValue["@odata.type"] =
440             "#TaskCollection.TaskCollection";
441         asyncResp->res.jsonValue["@odata.id"] = "/redfish/v1/TaskService/Tasks";
442         asyncResp->res.jsonValue["Name"] = "Task Collection";
443         asyncResp->res.jsonValue["Members@odata.count"] = task::tasks.size();
444         nlohmann::json& members = asyncResp->res.jsonValue["Members"];
445         members = nlohmann::json::array();
446 
447         for (const std::shared_ptr<task::TaskData>& task : task::tasks)
448         {
449             if (task == nullptr)
450             {
451                 continue; // shouldn't be possible
452             }
453             members.emplace_back(
454                 nlohmann::json{{"@odata.id", "/redfish/v1/TaskService/Tasks/" +
455                                                  std::to_string(task->index)}});
456         }
457         });
458 }
459 
460 inline void requestRoutesTaskService(App& app)
461 {
462     BMCWEB_ROUTE(app, "/redfish/v1/TaskService/")
463         .privileges(redfish::privileges::getTaskService)
464         .methods(boost::beast::http::verb::get)(
465             [&app](const crow::Request& req,
466                    const std::shared_ptr<bmcweb::AsyncResp>& asyncResp) {
467         if (!redfish::setUpRedfishRoute(app, req, asyncResp))
468         {
469             return;
470         }
471         asyncResp->res.jsonValue["@odata.type"] =
472             "#TaskService.v1_1_4.TaskService";
473         asyncResp->res.jsonValue["@odata.id"] = "/redfish/v1/TaskService";
474         asyncResp->res.jsonValue["Name"] = "Task Service";
475         asyncResp->res.jsonValue["Id"] = "TaskService";
476         asyncResp->res.jsonValue["DateTime"] =
477             crow::utility::getDateTimeOffsetNow().first;
478         asyncResp->res.jsonValue["CompletedTaskOverWritePolicy"] = "Oldest";
479 
480         asyncResp->res.jsonValue["LifeCycleEventOnTaskStateChange"] = true;
481 
482         auto health = std::make_shared<HealthPopulate>(asyncResp);
483         health->populate();
484         asyncResp->res.jsonValue["Status"]["State"] = "Enabled";
485         asyncResp->res.jsonValue["ServiceEnabled"] = true;
486         asyncResp->res.jsonValue["Tasks"]["@odata.id"] =
487             "/redfish/v1/TaskService/Tasks";
488         });
489 }
490 
491 } // namespace redfish
492