[20629] GUIDLess Discovery Server

examples/HelloWorldExampleDS/HelloWorldPublisher.cpp

@@ -49,9 +49,7 @@ bool HelloWorldPublisher::init(
     m_hello.index(0);
     m_hello.message("HelloWorld");
 
-    RemoteServerAttributes ratt;
-
-    ratt.ReadguidPrefix("44.49.53.43.53.45.52.56.45.52.5F.31");
+    LocatorList_t remote_server;
 
     DomainParticipantQos participant_qos = PARTICIPANT_QOS_DEFAULT;
 
@@ -70,8 +68,8 @@ bool HelloWorldPublisher::init(
         IPLocator::setPhysicalPort(server_address, default_port);
         IPLocator::setLogicalPort(server_address, 65215);
 
-        ratt.metatrafficUnicastLocatorList.push_back(server_address);
-        participant_qos.wire_protocol().builtin.discovery_config.m_DiscoveryServers.push_back(ratt);
+        remote_server.push_back(server_address);
+        participant_qos.wire_protocol().builtin.discovery_config.m_DiscoveryServers.push_back(remote_server);
         participant_qos.transport().use_builtin_transports = false;
         std::shared_ptr<TCPv4TransportDescriptor> descriptor = std::make_shared<TCPv4TransportDescriptor>();
 
@@ -90,8 +88,8 @@ bool HelloWorldPublisher::init(
             IPLocator::setIPv4(server_address, 127, 0, 0, 1);
         }
 
-        ratt.metatrafficUnicastLocatorList.push_back(server_address);
-        participant_qos.wire_protocol().builtin.discovery_config.m_DiscoveryServers.push_back(ratt);
+        remote_server.push_back(server_address);
+        participant_qos.wire_protocol().builtin.discovery_config.m_DiscoveryServers.push_back(remote_server);
     }
 
     participant_qos.wire_protocol().builtin.discovery_config.discoveryProtocol = DiscoveryProtocol::CLIENT;

examples/HelloWorldExampleDS/HelloWorldSubscriber.cpp

@@ -46,8 +46,7 @@ bool HelloWorldSubscriber::init(
         Locator server_address)
 {
 
-    RemoteServerAttributes ratt;
-    ratt.ReadguidPrefix("44.49.53.43.53.45.52.56.45.52.5F.31");
+    LocatorList_t remote_server;
 
     DomainParticipantQos participant_qos = PARTICIPANT_QOS_DEFAULT;
 
@@ -66,8 +65,8 @@ bool HelloWorldSubscriber::init(
         IPLocator::setPhysicalPort(server_address, default_port);
         IPLocator::setLogicalPort(server_address, 65215);
 
-        ratt.metatrafficUnicastLocatorList.push_back(server_address);
-        participant_qos.wire_protocol().builtin.discovery_config.m_DiscoveryServers.push_back(ratt);
+        remote_server.push_back(server_address);
+        participant_qos.wire_protocol().builtin.discovery_config.m_DiscoveryServers.push_back(remote_server);
         participant_qos.transport().use_builtin_transports = false;
         std::shared_ptr<TCPv4TransportDescriptor> descriptor = std::make_shared<TCPv4TransportDescriptor>();
 
@@ -86,8 +85,8 @@ bool HelloWorldSubscriber::init(
             IPLocator::setIPv4(server_address, 127, 0, 0, 1);
         }
 
-        ratt.metatrafficUnicastLocatorList.push_back(server_address);
-        participant_qos.wire_protocol().builtin.discovery_config.m_DiscoveryServers.push_back(ratt);
+        remote_server.push_back(server_address);
+        participant_qos.wire_protocol().builtin.discovery_config.m_DiscoveryServers.push_back(remote_server);
     }
 
     participant_qos.wire_protocol().builtin.discovery_config.discoveryProtocol = DiscoveryProtocol::CLIENT;

include/DiscoveryItem.h

@@ -326,6 +326,8 @@ struct ParticipantDiscoveryDatabase : public DiscoveryItem, public std::set<Part
     typedef std::set<ParticipantDiscoveryItem>::size_type size_type;
     typedef ParticipantDiscoveryDatabase::iterator iterator;
 
+    std::string participant_name_;
+
     // we need a special iterator that ignores zombie members
     struct smart_iterator
         : std::iterator<
@@ -365,8 +367,10 @@ struct ParticipantDiscoveryDatabase : public DiscoveryItem, public std::set<Part
     };
 
     ParticipantDiscoveryDatabase(
-            const GUID_t& id )
+            const GUID_t& id,
+            const std::string& name = std::string())
         : DiscoveryItem(id)
+        , participant_name_(name)
     {
     }
 
@@ -481,6 +485,10 @@ struct Snapshot : public std::set<ParticipantDiscoveryDatabase>
     const ParticipantDiscoveryDatabase* operator [](
             const GUID_t&) const;
 
+    ParticipantDiscoveryDatabase& access_snapshot(
+            const GUID_t& ptid,
+            const std::string& name);
+
     void to_xml(
             tinyxml2::XMLElement* pRoot,
             tinyxml2::XMLDocument& xmlDoc) const;
@@ -508,6 +516,7 @@ class DiscoveryItemDatabase
         class T>
     bool AddEndPoint(T & (ParticipantDiscoveryItem::* m)() const,
             const GUID_t& spokesman,
+            const std::string& srcName,
             const GUID_t& ptid,
             const GUID_t& sid,
             const std::string& _typename,
@@ -542,6 +551,7 @@ class DiscoveryItemDatabase
     //! Adds a new participant, returns false if allocation fails
     bool AddParticipant(
             const GUID_t& spokesman,
+            const std::string& srcName,
             const GUID_t& ptid,
             const std::string& name = std::string(),
             const std::chrono::steady_clock::time_point& discovered_timestamp = std::chrono::steady_clock::now(),
@@ -559,6 +569,7 @@ class DiscoveryItemDatabase
     //! Adds a new Subscriber, returns false if allocation fails
     bool AddDataReader(
             const GUID_t& spokesman,
+            const std::string& srcName,
             const GUID_t& ptid,
             const GUID_t& sid,
             const std::string& _typename,
@@ -573,6 +584,7 @@ class DiscoveryItemDatabase
     //! Adds a new Publisher, returns false if allocation fails
     bool AddDataWriter(
             const GUID_t& spokesman,
+            const std::string& srcName,
             const GUID_t& ptid,
             const GUID_t& pid,
             const std::string& _typename,

include/IDs.h

@@ -31,8 +31,6 @@ static const std::string s_sSimples("simples");
 static const std::string s_sSimple("simple");
 static const std::string s_sPersist("persist");
 static const std::string s_sLP("ListeningPorts");
-static const std::string s_sSL("ServersList");
-static const std::string s_sRServer("RServer");
 static const std::string s_sTime("time");
 static const std::string s_sSomeone("someone");
 static const std::string s_sShowLiveliness("show_liveliness");

resources/xml/test_schema.xml

@@ -25,16 +25,12 @@
         <builtin>
           <discoveryProtocol>CLIENT</discoveryProtocol>
           <discoveryServersList>
-            <RemoteServer prefix="4D.49.47.55.45.4c.5f.42.41.52.52.4f">
-              <metatrafficUnicastLocatorList>
-                <locator>
-                  <udpv4>
-                    <address>127.0.0.1</address>
-                    <port>65215</port>
-                  </udpv4>
-                </locator>
-              </metatrafficUnicastLocatorList>
-            </RemoteServer>
+              <locator>
+                <udpv4>
+                  <address>127.0.0.1</address>
+                  <port>65215</port>
+                </udpv4>
+              </locator>
           </discoveryServersList>
         </builtin>
       </rtps>

resources/xml/test_schema2.xml

@@ -43,16 +43,12 @@
         <builtin>
           <discoveryProtocol>CLIENT</discoveryProtocol>
           <discoveryServersList>
-            <RemoteServer prefix="4D.49.47.55.45.4c.5f.42.41.52.52.4f">
-              <metatrafficUnicastLocatorList>
-                <locator>
-                  <udpv4>
-                    <address>127.0.0.1</address>
-                    <port>65215</port>
-                  </udpv4>
-                </locator>
-              </metatrafficUnicastLocatorList>
-            </RemoteServer>
+              <locator>
+                <udpv4>
+                  <address>127.0.0.1</address>
+                  <port>65215</port>
+                </udpv4>
+              </locator>
           </discoveryServersList>
         </builtin>
       </rtps>

resources/xsd/discovery-server.xsd

@@ -349,12 +349,6 @@
         <xs:attribute name="prefix" type="guid" use="required"/>
     </xs:complexType>
 
-    <xs:complexType name="DiscoveryServerList">
-        <xs:sequence>
-            <xs:element name="RemoteServer" type="RemoteServerAttributes" minOccurs="1" maxOccurs="unbounded"/>
-        </xs:sequence>
-    </xs:complexType>
-
     <xs:complexType name="initialAnnouncementsType">
         <xs:all minOccurs="0">
             <xs:element name="count" type="uint32Type" minOccurs="0"/>
@@ -372,7 +366,7 @@
             <xs:element name="initialAnnouncements" type="initialAnnouncementsType" minOccurs="0"/>
             <xs:element name="simpleEDP" type="simpleEDPType" minOccurs="0"/>
             <xs:element name="clientAnnouncementPeriod" type="durationType" minOccurs="0"/>
-            <xs:element name="discoveryServersList" type="DiscoveryServerList" minOccurs="0"/>
+            <xs:element name="discoveryServersList" type="locatorListType" minOccurs="0"/>
             <xs:element name="staticEndpointXMLFilename" type="stringType" minOccurs="0"/>
         </xs:all>
     </xs:complexType>
@@ -915,7 +909,6 @@
                     </xs:choice>
                 </xs:complexType>
             </xs:element>
-            <xs:element name="ServersList" type="ServersListType" minOccurs="0" maxOccurs="1" />
             <!-- not mandatory may be present in the profile -->
             <xs:choice minOccurs="0">
                 <!-- publisher and subscriber must be contiguous but in any order -->
@@ -942,19 +935,8 @@
         <!-- removal time in seconds from startup-->
     </xs:complexType>
 
-    <xs:complexType name="ServersListType">
-        <xs:sequence>
-            <xs:element name="RServer" minOccurs="1" maxOccurs="unbounded">
-                <xs:complexType>
-                    <xs:attribute name="prefix" type="guid" use="required" />
-                </xs:complexType>
-            </xs:element>
-        </xs:sequence>
-    </xs:complexType>
-
     <xs:complexType name="clientType">
         <xs:sequence >
-            <xs:element name="ServersList" type="ServersListType" minOccurs="0" maxOccurs="1" />
             <xs:choice minOccurs="0">
                 <!-- publisher and subscriber must be contiguous but in any order -->
                 <xs:sequence>

src/DiscoveryItem.cpp

@@ -382,14 +382,15 @@ std::vector<const ParticipantDiscoveryItem*> DiscoveryItemDatabase::FindParticip
 
 bool DiscoveryItemDatabase::AddParticipant(
         const GUID_t& spokesman,
+        const std::string& srcName,
         const GUID_t& ptid,
         const std::string& name,
         const std::chrono::steady_clock::time_point& discovered_timestamp,
         bool server /* = false*/)
 {
     std::lock_guard<std::mutex> lock(database_mutex);
 
-    ParticipantDiscoveryDatabase& _database = image[spokesman];
+    ParticipantDiscoveryDatabase& _database = image.access_snapshot(spokesman, srcName);
     ParticipantDiscoveryDatabase::iterator it = std::lower_bound(_database.begin(), _database.end(), ptid);
 
     if (it == _database.end() || *it != ptid)
@@ -455,6 +456,7 @@ template<class T>
 bool DiscoveryItemDatabase::AddEndPoint(
         T& (ParticipantDiscoveryItem::* m)() const,
         const GUID_t& spokesman,
+        const std::string& srcName,
         const GUID_t& ptid,
         const GUID_t& id,
         const std::string& _typename,
@@ -463,7 +465,7 @@ bool DiscoveryItemDatabase::AddEndPoint(
 {
     std::lock_guard<std::mutex> lock(database_mutex);
 
-    ParticipantDiscoveryDatabase& _database = image[spokesman];
+    ParticipantDiscoveryDatabase& _database = image.access_snapshot(spokesman, srcName);
     ParticipantDiscoveryDatabase::iterator it = std::lower_bound(_database.begin(), _database.end(), ptid);
 
     if (it == _database.end() || ptid == spokesman )
@@ -534,13 +536,14 @@ bool DiscoveryItemDatabase::RemoveEndPoint(
 
 bool DiscoveryItemDatabase::AddDataReader(
         const GUID_t& spokesman,
+        const std::string& srcName,
         const GUID_t& ptid,
         const GUID_t& sid,
         const std::string& _typename,
         const std::string& topicname,
         const std::chrono::steady_clock::time_point& discovered_timestamp)
 {
-    return AddEndPoint(&ParticipantDiscoveryItem::getDataReaders, spokesman, ptid, sid, _typename, topicname,
+    return AddEndPoint(&ParticipantDiscoveryItem::getDataReaders, spokesman, srcName, ptid, sid, _typename, topicname,
                    discovered_timestamp);
 }
 
@@ -554,13 +557,14 @@ bool DiscoveryItemDatabase::RemoveDataReader(
 
 bool DiscoveryItemDatabase::AddDataWriter(
         const GUID_t& spokesman,
+        const std::string& srcName,
         const GUID_t& ptid,
         const GUID_t& pid,
         const std::string& _typename,
         const std::string& topicname,
         const std::chrono::steady_clock::time_point& discovered_timestamp)
 {
-    return AddEndPoint(&ParticipantDiscoveryItem::getDataWriters, spokesman, ptid, pid, _typename, topicname,
+    return AddEndPoint(&ParticipantDiscoveryItem::getDataWriters, spokesman, srcName, ptid, pid, _typename, topicname,
                    discovered_timestamp);
 }
 
@@ -806,6 +810,26 @@ bool eprosima::discovery_server::operator ==(
     return false;
 }
 
+ParticipantDiscoveryDatabase& Snapshot::access_snapshot (
+        const GUID_t& id,
+        const std::string& name)
+{
+    auto it = std::lower_bound(begin(), end(), id);
+    const ParticipantDiscoveryDatabase* p = nullptr;
+
+    if (it == end() || *it != id)
+    {
+        // not there, emplace
+        p = &(*emplace(id, name).first);
+    }
+    else
+    {
+        p = &*it;
+    }
+
+    return const_cast<ParticipantDiscoveryDatabase&>(*p);
+}
+
 ParticipantDiscoveryDatabase& Snapshot::operator [](
         const GUID_t& id)
 {
@@ -815,7 +839,8 @@ ParticipantDiscoveryDatabase& Snapshot::operator [](
     if (it == end() || *it != id)
     {
         // not there, emplace
-        p = &(*emplace(id).first);
+        // should never be called from this operator
+        p = &(*emplace(id, "").first);
     }
     else
     {
@@ -877,6 +902,11 @@ void Snapshot::to_xml(
             sstream << discovery_database.endpoint_guid.entityId;
             pPtdb->SetAttribute(s_sGUID_entity.c_str(), sstream.str().c_str());
         }
+        {
+            std::stringstream sstream;
+            sstream << discovery_database.participant_name_;
+            pPtdb->SetAttribute(s_sName.c_str(), sstream.str().c_str());
+        }
 
         for (const ParticipantDiscoveryItem& discovery_item : discovery_database)
         {