1 /**
2 * Copyright 2017 Google Inc.
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
17 #include <iostream>
18 #include <map>
19 #include <memory>
20 #include <string>
21
22 /* Configuration. */
23 #include "conf.hpp"
24 #include "dbus/dbushelper.hpp"
25 #include "dbus/dbuspassive.hpp"
26 #include "dbus/dbuswrite.hpp"
27 #include "errors/exception.hpp"
28 #include "interfaces.hpp"
29 #include "notimpl/readonly.hpp"
30 #include "notimpl/writeonly.hpp"
31 #include "sensors/build_utils.hpp"
32 #include "sensors/builder.hpp"
33 #include "sensors/host.hpp"
34 #include "sensors/manager.hpp"
35 #include "sensors/pluggable.hpp"
36 #include "sysfs/sysfsread.hpp"
37 #include "sysfs/sysfswrite.hpp"
38 #include "util.hpp"
39
40 namespace pid_control
41 {
42
43 static constexpr bool deferSignals = true;
44
buildSensors(const std::map<std::string,conf::SensorConfig> & config,sdbusplus::bus_t & passive,sdbusplus::bus_t & host)45 SensorManager buildSensors(
46 const std::map<std::string, conf::SensorConfig>& config,
47 sdbusplus::bus_t& passive, sdbusplus::bus_t& host)
48 {
49 SensorManager mgmr{passive, host};
50 auto& hostSensorBus = mgmr.getHostBus();
51 auto& passiveListeningBus = mgmr.getPassiveBus();
52
53 for (const auto& it : config)
54 {
55 std::unique_ptr<ReadInterface> ri;
56 std::unique_ptr<WriteInterface> wi;
57
58 std::string name = it.first;
59 const conf::SensorConfig* info = &it.second;
60
61 std::cerr << "Sensor: " << name << " " << info->type << " ";
62 std::cerr << info->readPath << " " << info->writePath << "\n";
63
64 IOInterfaceType rtype = getReadInterfaceType(info->readPath);
65 IOInterfaceType wtype = getWriteInterfaceType(info->writePath);
66
67 // fan sensors can be ready any way and written others.
68 // fan sensors are the only sensors this is designed to write.
69 // Nothing here should be write-only, although, in theory a fan could
70 // be. I'm just not sure how that would fit together.
71 // TODO(venture): It should check with the ObjectMapper to check if
72 // that sensor exists on the Dbus.
73 switch (rtype)
74 {
75 case IOInterfaceType::DBUSPASSIVE:
76 // we only need to make one match based on the dbus object
77 static std::shared_ptr<DbusPassiveRedundancy> redundancy =
78 std::make_shared<DbusPassiveRedundancy>(
79 passiveListeningBus);
80
81 if (info->type == "fan")
82 {
83 ri = DbusPassive::createDbusPassive(
84 passiveListeningBus, info->type, name,
85 std::make_unique<DbusHelper>(passiveListeningBus), info,
86 redundancy);
87 }
88 else
89 {
90 ri = DbusPassive::createDbusPassive(
91 passiveListeningBus, info->type, name,
92 std::make_unique<DbusHelper>(passiveListeningBus), info,
93 nullptr);
94 }
95 if (ri == nullptr)
96 {
97 throw SensorBuildException(
98 "Failed to create dbus passive sensor: " + name +
99 " of type: " + info->type);
100 }
101 break;
102 case IOInterfaceType::EXTERNAL:
103 // These are a special case for read-only.
104 break;
105 case IOInterfaceType::SYSFS:
106 ri = std::make_unique<SysFsRead>(info->readPath);
107 break;
108 default:
109 ri = std::make_unique<WriteOnly>();
110 break;
111 }
112
113 if (info->type == "fan")
114 {
115 switch (wtype)
116 {
117 case IOInterfaceType::SYSFS:
118 if (info->max > 0)
119 {
120 wi = std::make_unique<SysFsWritePercent>(
121 info->writePath, info->min, info->max);
122 }
123 else
124 {
125 wi = std::make_unique<SysFsWrite>(info->writePath,
126 info->min, info->max);
127 }
128
129 break;
130 case IOInterfaceType::DBUSACTIVE:
131 if (info->max > 0)
132 {
133 wi = DbusWritePercent::createDbusWrite(
134 info->writePath, info->min, info->max,
135 std::make_unique<DbusHelper>(passiveListeningBus));
136 }
137 else
138 {
139 wi = DbusWrite::createDbusWrite(
140 info->writePath, info->min, info->max,
141 std::make_unique<DbusHelper>(passiveListeningBus));
142 }
143
144 if (wi == nullptr)
145 {
146 throw SensorBuildException(
147 "Unable to create write dbus interface for path: " +
148 info->writePath);
149 }
150
151 break;
152 default:
153 wi = std::make_unique<ReadOnlyNoExcept>();
154 break;
155 }
156
157 auto sensor = std::make_unique<PluggableSensor>(
158 name, info->timeout, std::move(ri), std::move(wi));
159 mgmr.addSensor(info->type, name, std::move(sensor));
160 }
161 else if (info->type == "temp" || info->type == "margin" ||
162 info->type == "power" || info->type == "powersum")
163 {
164 // These sensors are read-only, but only for this application
165 // which only writes to fan sensors.
166 std::cerr << info->type << " readPath: " << info->readPath << "\n";
167
168 if (IOInterfaceType::EXTERNAL == rtype)
169 {
170 std::cerr << "Creating HostSensor: " << name
171 << " path: " << info->readPath << "\n";
172
173 /*
174 * The reason we handle this as a HostSensor is because it's
175 * not quite pluggable; but maybe it could be.
176 */
177 auto sensor = HostSensor::createTemp(
178 name, info->timeout, hostSensorBus, info->readPath.c_str(),
179 deferSignals);
180 mgmr.addSensor(info->type, name, std::move(sensor));
181 }
182 else
183 {
184 wi = std::make_unique<ReadOnlyNoExcept>();
185 auto sensor = std::make_unique<PluggableSensor>(
186 name, info->timeout, std::move(ri), std::move(wi));
187 mgmr.addSensor(info->type, name, std::move(sensor));
188 }
189 }
190 }
191
192 return mgmr;
193 }
194
195 } // namespace pid_control
196