Subscribe/Unsubscribe RPC handlers (#2)

Subscribe to ledgers, transactions and accounts

reporting/server/session.cpp

@@ -0,0 +1,48 @@
+#include <reporting/server/session.h>
+
+void
+fail(boost::beast::error_code ec, char const* what)
+{
+    std::cerr << what << ": " << ec.message() << "\n";
+}
+
+boost::json::object
+buildResponse(
+    boost::json::object const& request,
+    BackendInterface const& backend,
+    SubscriptionManager& subManager,
+    std::shared_ptr<session> session)
+{
+    std::string command = request.at("command").as_string().c_str();
+    boost::json::object response;
+    switch (commandMap[command])
+    {
+        case tx:
+            return doTx(request, backend);
+            break;
+        case account_tx:
+            return doAccountTx(request, backend);
+            break;
+        case book_offers:
+            return doBookOffers(request, backend);
+            break;
+        case ledger:
+            return doLedger(request, backend);
+            break;
+        case ledger_data:
+            return doLedgerData(request, backend);
+            break;
+        case account_info:
+            return doAccountInfo(request, backend);
+            break;
+        case subscribe:
+            return doSubscribe(request, session, subManager);
+            break;
+        case unsubscribe:
+            return doUnsubscribe(request, session, subManager);
+            break;
+        default:
+            BOOST_LOG_TRIVIAL(error) << "Unknown command: " << command;
+    }
+    return response;
+}