Checking if lmdb2 exists or not, before trying to use the custom lmdb database for searching things.

src/CMakeLists.txt

@@ -12,7 +12,9 @@ set(SOURCE_FILES
 		MicroCore.cpp
 		tools.cpp
 		CmdLineOptions.cpp
-		tx_details.cpp page.cpp page.h rpccalls.cpp rpccalls.h)
+		tx_details.cpp
+		page.h
+		rpccalls.cpp rpccalls.h)
 
 # make static library called libmyxrm
 # that we are going to link to

src/page.cpp

@@ -1,5 +0,0 @@
-//
-// Created by mwo on 8/04/16.
-//
-
-#include "page.h"

src/page.h

@@ -1447,12 +1447,21 @@ namespace xmreg {
             vector<pair<string, vector<string>>> all_possible_tx_hashes;
 
 
-            xmreg::MyLMDB mylmdb {lmdb2_path};
 
-            // search the custum lmdb for key_images and append the result
-            // to those from the mempool search if found
 
-            mylmdb.search(search_text,
+            try
+            {
+                unique_ptr<xmreg::MyLMDB> mylmdb;
+
+                if (!bf::is_directory(lmdb2_path))
+                {
+                    throw std::runtime_error(lmdb2_path + " does not exist");
+                }
+
+                mylmdb = make_unique<xmreg::MyLMDB>(lmdb2_path);
+
+
+                mylmdb->search(search_text,
                                tx_search_results["key_images"],
                                "key_images");
 
@@ -1466,7 +1475,7 @@ namespace xmreg {
                 // search the custum lmdb for tx_public_keys and append the result
                 // to those from the mempool search if found
 
-            mylmdb.search(search_text,
+                mylmdb->search(search_text,
                                tx_search_results["tx_public_keys"],
                                "tx_public_keys");
 
@@ -1477,7 +1486,7 @@ namespace xmreg {
                 // search the custum lmdb for payments_id and append the result
                 // to those from the mempool search if found
 
-            mylmdb.search(search_text,
+                mylmdb->search(search_text,
                                tx_search_results["payments_id"],
                                "payments_id");
 
@@ -1488,7 +1497,7 @@ namespace xmreg {
                 // search the custum lmdb for encrypted_payments_id and append the result
                 // to those from the mempool search if found
 
-            mylmdb.search(search_text,
+                mylmdb->search(search_text,
                                tx_search_results["encrypted_payments_id"],
                                "encrypted_payments_id");
 
@@ -1499,7 +1508,7 @@ namespace xmreg {
                 // search the custum lmdb for output_public_keys and append the result
                 // to those from the mempool search if found
 
-            mylmdb.search(search_text,
+                mylmdb->search(search_text,
                                tx_search_results["output_public_keys"],
                                "output_public_keys");
 
@@ -1536,7 +1545,7 @@ namespace xmreg {
 
                         vector<string> found_outputs;
 
-                     mylmdb.search(output_pub_key,
+                        mylmdb->search(output_pub_key,
                                        found_outputs,
                                        "output_public_keys");
 
@@ -1552,7 +1561,7 @@ namespace xmreg {
                         cerr << "Cant cast global_idx string: "
                         << search_text.substr(4) << endl;
                     }
-            }
+                } //  if (search_for_global_output_idx)
 
                 // seach for output using output amount index and amount
 
@@ -1595,7 +1604,7 @@ namespace xmreg {
 
                         vector<string> found_outputs;
 
-                     mylmdb.search(output_pub_key,
+                        mylmdb->search(output_pub_key,
                                        found_outputs,
                                        "output_public_keys");
 
@@ -1619,6 +1628,18 @@ namespace xmreg {
                         return(string("Output not found in the blockchain: ")
                                + search_text.substr(4));
                     }
+                } // if (search_for_amount_output_idx)
+            }
+            catch (const lmdb::runtime_error& e)
+            {
+                cerr << "Error opening/accessing custom lmdb database: "
+                     << e.what() << endl;
+            }
+            catch (...)
+            {
+                std::exception_ptr p = std::current_exception();
+                cerr << "Error opening/accessing custom lmdb database: "
+                     << p.__cxa_exception_type()->name() << endl;
             }