[rest] added endpoint for getting mleid ip address

src/rest/openapi.yaml

@@ -404,6 +404,21 @@ paths:
                 type: string
                 description: Coprocessor version string
                 example: "OPENTHREAD/thread-reference-20200818-1740-g33cc75ed3; NRF52840; Jun  2 2022 14:25:49"
+  /node/ip-address/mleid:
+    get:
+      tags:
+        - node
+      summary: Get the MLEID ip address
+      description: Retrieves the border router mesh-local EID IP address.
+      responses:
+        "200":
+          description: Successful operation.
+          content:
+            application/json:
+              schema:
+                type: string
+                description: mleid ip address
+                example: "fd06:1488:f31:d0f9:f4f4:3594:e17c:4882"
 
 components:
   schemas:

src/rest/resource.cpp

@@ -55,6 +55,8 @@
 #define OT_REST_RESOURCE_PATH_NETWORK_CURRENT "/networks/current"
 #define OT_REST_RESOURCE_PATH_NETWORK_CURRENT_COMMISSION "/networks/commission"
 #define OT_REST_RESOURCE_PATH_NETWORK_CURRENT_PREFIX "/networks/current/prefix"
+#define OT_REST_RESOURCE_PATH_NODE_IPADDRESS "/node/ip-address"
+#define OT_REST_RESOURCE_PATH_NODE_IPADDRESS_MLEID "/node/ip-address/mleid"
 
 #define OT_REST_HTTP_STATUS_200 "200 OK"
 #define OT_REST_HTTP_STATUS_201 "201 Created"
@@ -148,6 +150,7 @@ Resource::Resource(RcpHost *aHost)
     mResourceMap.emplace(OT_REST_RESOURCE_PATH_NODE_RLOC, &Resource::Rloc);
     mResourceMap.emplace(OT_REST_RESOURCE_PATH_NODE_DATASET_ACTIVE, &Resource::DatasetActive);
     mResourceMap.emplace(OT_REST_RESOURCE_PATH_NODE_DATASET_PENDING, &Resource::DatasetPending);
+    mResourceMap.emplace(OT_REST_RESOURCE_PATH_NODE_IPADDRESS_MLEID, &Resource::IpAddrMleid);
     mResourceMap.emplace(OT_REST_RESOURCE_PATH_NODE_COMMISSIONER_STATE, &Resource::CommissionerState);
     mResourceMap.emplace(OT_REST_RESOURCE_PATH_NODE_COMMISSIONER_JOINER, &Resource::CommissionerJoiner);
     mResourceMap.emplace(OT_REST_RESOURCE_PATH_NODE_COPROCESSOR_VERSION, &Resource::CoprocessorVersion);
@@ -1086,6 +1089,34 @@ void Resource::CoprocessorVersion(const Request &aRequest, Response &aResponse)
     }
 }
 
+void Resource::GetIpAddrMleid(Response &aResponse) const
+{
+    std::string         errorCode;
+    std::string         mleidJsonString;
+    const otIp6Address *mleid;
+
+    mleid = otThreadGetMeshLocalEid(mInstance);
+
+    mleidJsonString = Json::IpAddr2JsonString(*mleid);
+    aResponse.SetBody(mleidJsonString);
+    errorCode = GetHttpStatus(HttpStatusCode::kStatusOk);
+    aResponse.SetResponsCode(errorCode);
+}
+
+void Resource::IpAddrMleid(const Request &aRequest, Response &aResponse) const
+{
+    std::string errorCode;
+
+    if (aRequest.GetMethod() == HttpMethod::kGet)
+    {
+        GetIpAddrMleid(aResponse);
+    }
+    else
+    {
+        ErrorHandler(aResponse, HttpStatusCode::kStatusMethodNotAllowed);
+    }
+}
+
 void Resource::DeleteOutDatedDiagnostic(void)
 {
     auto eraseIt = mDiagSet.begin();

src/rest/resource.hpp

@@ -130,6 +130,7 @@ class Resource
     void Diagnostic(const Request &aRequest, Response &aResponse) const;
     void HandleDiagnosticCallback(const Request &aRequest, Response &aResponse);
     void CoprocessorVersion(const Request &aRequest, Response &aResponse) const;
+    void IpAddrMleid(const Request &aRequest, Response &aResponse) const;
 
     void GetNodeInfo(Response &aResponse) const;
     void DeleteNodeInfo(Response &aResponse) const;
@@ -151,6 +152,7 @@ class Resource
     void AddJoiner(const Request &aRequest, Response &aResponse) const;
     void RemoveJoiner(const Request &aRequest, Response &aResponse) const;
     void GetCoprocessorVersion(Response &aResponse) const;
+    void GetIpAddrMleid(Response &aResponse) const;
 
     void DeleteOutDatedDiagnostic(void);
     void UpdateDiag(std::string aKey, std::vector<otNetworkDiagTlv> &aDiag);