xref: /openbmc/phosphor-objmgr/src/types.hpp (revision 2ec9157f)
1 #pragma once
2 
3 #include <boost/container/flat_map.hpp>
4 #include <boost/container/flat_set.hpp>
5 #include <sdbusplus/asio/object_server.hpp>
6 
7 #include <memory>
8 #include <string>
9 #include <tuple>
10 #include <vector>
11 
12 /** @brief interface_map_type is the underlying datastructure the mapper uses.
13  *
14  * The 3 levels of map are
15  * object paths
16  *   connection names
17  *      interface names
18  */
19 using InterfaceNames = boost::container::flat_set<std::string, std::less<>,
20                                                   std::vector<std::string>>;
21 
22 using ConnectionNames = boost::container::flat_map<
23     std::string, InterfaceNames, std::less<>,
24     std::vector<std::pair<std::string, InterfaceNames>>>;
25 
26 using InterfaceMapType = boost::container::flat_map<
27     std::string, ConnectionNames, std::less<>,
28     std::vector<std::pair<std::string, ConnectionNames>>>;
29 
30 /**
31  *  Associations and some metadata are stored in associationInterfaces.
32  *  The fields are:
33  *   * ifacePos - holds the D-Bus interface object
34  *   * endpointsPos - holds the endpoints array that shadows the property
35  */
36 static constexpr auto ifacePos = 0;
37 static constexpr auto endpointsPos = 1;
38 using Endpoints = std::vector<std::string>;
39 
40 // map[interface path: tuple[dbus_interface,vector[endpoint paths]]]
41 using AssociationInterfaces = boost::container::flat_map<
42     std::string,
43     std::tuple<std::shared_ptr<sdbusplus::asio::dbus_interface>, Endpoints>>;
44 
45 /**
46  * The associationOwners map contains information about creators of
47  * associations, so that when a org.openbmc.Association interface is
48  * removed or its 'associations' property is changed, the mapper owned
49  * association objects can be correctly handled.  It is a map of the
50  * object path of the org.openbmc.Association owner to a map of the
51  * service the path is owned by, to a map of the association objects to
52  * their endpoint paths:
53  * map[ownerPath : map[service : map[assocPath : [endpoint paths]]]
54  * For example:
55  * [/logging/entry/1 :
56  *   [xyz.openbmc_project.Logging :
57  *     [/logging/entry/1/callout : [/system/cpu0],
58  *      /system/cpu0/fault : [/logging/entry/1]]]]
59  */
60 using AssociationPaths =
61     boost::container::flat_map<std::string,
62                                boost::container::flat_set<std::string>>;
63 
64 using AssociationOwnersType = boost::container::flat_map<
65     std::string, boost::container::flat_map<std::string, AssociationPaths>>;
66 
67 /**
68  * Store the contents of the associations property on the interface
69  * For example:
70  * ["inventory", "activation", "/xyz/openbmc_project/inventory/system/chassis"]
71  */
72 constexpr auto forwardTypePos = 0;
73 constexpr auto reverseTypePos = 1;
74 constexpr auto reversePathPos = 2;
75 using Association = std::tuple<std::string, std::string, std::string>;
76 
77 /**
78  * PendingAssociations tracks associations that cannot be created because
79  * the endpoint (the last element of the Association tuple) doesn't exist.
80  * When that endpoint shows up on D-Bus, both association paths can then
81  * be created.  Also, if a valid association has an endpoint removed from
82  * D-Bus, then a new PendingAssociations entry will be created until it
83  * reappears.  It has all of the information it needs to recreate the
84  * association.
85  */
86 constexpr auto ownerPos = 0;
87 constexpr auto assocPos = 1;
88 using ExistingEndpoint = std::tuple<std::string, Association>;
89 using ExistingEndpoints = std::vector<ExistingEndpoint>;
90 using PendingAssociations = std::map<std::string, ExistingEndpoints>;
91 
92 /**
93  *  The return type of findAssociations().
94  *  The string in the tuple is the association owner.
95  */
96 using FindAssocResults = std::vector<std::tuple<std::string, Association>>;
97 
98 /**
99  * Keeps all association related maps together.
100  */
101 struct AssociationMaps
102 {
103     AssociationInterfaces ifaces;
104     AssociationOwnersType owners;
105     PendingAssociations pending;
106 };
107