mapper: Add GetAssociatedSubTreePathsById and GetAssociatedSubTreeById

dbus-interface change in:
https://gerrit.openbmc.org/c/openbmc/phosphor-dbus-interfaces/+/69999

This commit implements two new methods: GetAssociatedSubTreePathsById
and GetAssociatedSubTreeById. These methods retrieve the paths of
associated endpoints corresponding to the provided identifier, filtering
based on their association with specified endpoint interfaces.

GetAssociatedSubTreePathsById returns the D-Bus paths of associated
endpoints, while GetAssociatedSubTreeById retrieves a dictionary of
D-Bus paths of associated endpoints mapped to corresponding services
associated with the provided identifier.

Tested:
'''
busctl call -j  "xyz.openbmc_project.ObjectMapper"   "/xyz/openbmc_project/object_mapper" \
  "xyz.openbmc_project.ObjectMapper" "GetAssociatedSubTreePathsById" ssassas \
   "chassis" \
   "/xyz/openbmc_project/inventory"  \
   1 "xyz.openbmc_project.Inventory.Item.Chassis" \
    "powered_by" \
   1  "xyz.openbmc_project.Inventory.Item.PowerSupply"
{
        "type" : "as",
        "data" : [
                [
                        "/xyz/openbmc_project/inventory/system/chassis/motherboard/powersupply0",
                        "/xyz/openbmc_project/inventory/system/chassis/motherboard/powersupply1",
                        "/xyz/openbmc_project/inventory/system/chassis/motherboard/powersupply2",
                        "/xyz/openbmc_project/inventory/system/chassis/motherboard/powersupply3"
                ]
        ]
}
'''

Another example.

```
busctl call -j xyz.openbmc_project.ObjectMapper   /xyz/openbmc_project/object_mapper \
     xyz.openbmc_project.ObjectMapper GetAssociatedSubTreePathsById ssassas \
     disk_backplane0  \
     /xyz/openbmc_project/inventory \
     1 xyz.openbmc_project.Inventory.Item.FabricAdapter \
     connecting \
     1 xyz.openbmc_project.Inventory.Connector.Port
{
	"type" : "as",
	"data" : [
		[
			"/xyz/openbmc_project/inventory/system/chassis/motherboard/disk_backplane0/dp0_connector0",
			"/xyz/openbmc_project/inventory/system/chassis/motherboard/disk_backplane0/dp0_connector1",
			"/xyz/openbmc_project/inventory/system/chassis/motherboard/disk_backplane0/dp0_connector2",
			"/xyz/openbmc_project/inventory/system/chassis/motherboard/disk_backplane0/dp0_connector3",
			"/xyz/openbmc_project/inventory/system/chassis/motherboard/disk_backplane0/dp0_connector4",
			"/xyz/openbmc_project/inventory/system/chassis/motherboard/disk_backplane0/dp0_connector5"
		]
	]
}
```

Change-Id: Id55a9b41fe70f7204543d92b5396888f6914a1d4
Signed-off-by: Lakshmi Yadlapati <lakshmiy@us.ibm.com>
Signed-off-by: Myung Bae <myungbae@us.ibm.com>
diff --git a/src/handler.hpp b/src/handler.hpp
index 515c937..f6d4d94 100644
--- a/src/handler.hpp
+++ b/src/handler.hpp
@@ -68,3 +68,51 @@
     const sdbusplus::message::object_path& associationPath,
     const sdbusplus::message::object_path& reqPath, int32_t depth,
     std::vector<std::string>& interfaces);
+
+/**
+ * @brief Get the Associated Sub Tree Paths object by id
+ *
+ * @param interfaceMap       Mapper Structure storing all associations
+ * @param associationMaps    Map of association between objects
+ * @param id                 Identifier to search for the subtree
+ * @param objectPath         Base path to search for the subtree
+ * @param subtreeInterfaces  Interface filter for the subtree
+ * @param association        The endpoint association
+ * @param endpointInterfaces Interface filter for the endpoint association
+ *
+ * Use getAssociatedSubTree and return only the dbus objects that
+ * are associated with the provided identifier, filtering based on on their
+ * endpoint association.
+ *
+ * @return std::vector<InterfaceMapType::value_type>
+ */
+std::vector<InterfaceMapType::value_type> getAssociatedSubTreeById(
+    const InterfaceMapType& interfaceMap,
+    const AssociationMaps& associationMaps, const std::string& id,
+    const std::string& objectPath, std::vector<std::string>& subtreeInterfaces,
+    const std::string& association,
+    std::vector<std::string>& endpointInterfaces);
+
+/**
+ * @brief Get the Associated Sub Tree Paths object by id
+ *
+ * @param interfaceMap       Mapper Structure storing all associations
+ * @param associationMaps    Map of association between objects
+ * @param id                 Identifier to search for the subtree
+ * @param objectPath         Base path to search for the subtree
+ * @param subtreeInterfaces  Interface filter for the subtree
+ * @param association        The endpoint association
+ * @param endpointInterfaces Interface filter for the endpoint association
+ *
+ * Use getAssociatedSubTreePaths and return only the dbus objects that
+ * are associated with the provided identifier, filtering based on on their
+ * endpoint association.
+ *
+ * @return std::vector<std::string>
+ */
+std::vector<std::string> getAssociatedSubTreePathsById(
+    const InterfaceMapType& interfaceMap,
+    const AssociationMaps& associationMaps, const std::string& id,
+    const std::string& objectPath, std::vector<std::string>& subtreeInterfaces,
+    const std::string& association,
+    std::vector<std::string>& endpointInterfaces);