FOGL-10186 : implemented --info parameter to fetch service information

C/scripts/dispatcher_c

@@ -0,0 +1,28 @@
+#!/bin/bash
+# Run a Fledge Dispatcher service written in C/C++
+if [ "${FLEDGE_ROOT}" = "" ]; then
+  FLEDGE_ROOT=/usr/local/fledge
+fi
+
+if [ ! -d "${FLEDGE_ROOT}" ]; then
+	logger "Fledge home directory missing or incorrectly set environment"
+	exit 1
+fi
+
+# startup with delay
+delay() {
+    for ARG in "$@";
+      do
+        PARAM=$(echo $ARG | cut -f1 -d=)
+        if [ $PARAM = '--delay' ]; then
+          PARAM_LENGTH=${#PARAM}
+          VALUE="${ARG:$PARAM_LENGTH+1}"
+          sleep $VALUE
+          break
+        fi
+    done
+}
+
+cd "${FLEDGE_ROOT}/services"
+delay "$@"
+./fledge.services.dispatcher "$@"

C/services/dispatcher/CMakeLists.txt

@@ -85,4 +85,7 @@ set(FLEDGE_INSTALL "" CACHE INTERNAL "")
 if (FLEDGE_INSTALL)
 	message(STATUS "Installing ${PROJECT_NAME} in ${FLEDGE_INSTALL}/services")
 	install(TARGETS ${EXEC} RUNTIME DESTINATION ${FLEDGE_INSTALL}/services)
+    # Install the dispatcher_c startup script
+	install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/../../scripts/dispatcher_c DESTINATION ${FLEDGE_INSTALL}/scripts/services
+    PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_WRITE GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
 endif()

C/services/dispatcher/dispatcher.cpp

@@ -54,6 +54,14 @@ static void signalHandler(int signal)
 	}
 }
 
+// Displays service information in JSON format
+static void printServiceInfoAsJSON()
+{
+	std::string serviceInfoJSON = R"({"name":")" + std::string(SERVICE_NAME) + R"(","description":"Service used to manage and send control information","package":"fledge-service-dispatcher","type":")" + std::string(SERVICE_TYPE) + R"(","process":"dispatcher_c","process_script":"[\"services/dispatcher_c\"]","startup_priority":20})" ;
+
+	std::cout << serviceInfoJSON << std::endl;
+}
+
 /**
  * Dispatcher service main entry point
  */
@@ -75,6 +83,11 @@ int main(int argc, char *argv[])
 
 	for (int i = 1; i < argc; i++)
 	{
+		if (!strcmp(argv[i], "--info"))
+		{
+			printServiceInfoAsJSON();
+			return 0;
+		}
 		if (!strcmp(argv[i], "-d"))
 		{
 			daemonMode = false;

C/services/dispatcher/dispatcher_service.cpp

@@ -154,7 +154,7 @@ bool DispatcherService::start(string& coreAddress,
 	unsigned short listenerPort = m_api->getListenerPort();
 	unsigned short managementListener = m_managementApi->getListenerPort();
 	ServiceRecord record(m_name,			// Service name
-			     "Dispatcher",		// Service type
+			     SERVICE_TYPE,		// Service type
 			     "http",			// Protocol
 			     "localhost",		// Listening address
 			     listenerPort,		// Service port