Change logging to easylogging++

This replaces the epee and data_loggers logging systems with
a single one, and also adds filename:line and explicit severity
levels. Categories may be defined, and logging severity set
by category (or set of categories). epee style 0-4 log level
maps to a sensible severity configuration. Log files now also
rotate when reaching 100 MB.

To select which logs to output, use the MONERO_LOGS environment
variable, with a comma separated list of categories (globs are
supported), with their requested severity level after a colon.
If a log matches more than one such setting, the last one in
the configuration string applies. A few examples:

This one is (mostly) silent, only outputting fatal errors:

MONERO_LOGS=*:FATAL

This one is very verbose:

MONERO_LOGS=*:TRACE

This one is totally silent (logwise):

MONERO_LOGS=""

This one outputs all errors and warnings, except for the
"verify" category, which prints just fatal errors (the verify
category is used for logs about incoming transactions and
blocks, and it is expected that some/many will fail to verify,
hence we don't want the spam):

MONERO_LOGS=*:WARNING,verify:FATAL

Log levels are, in decreasing order of priority:
FATAL, ERROR, WARNING, INFO, DEBUG, TRACE

Subcategories may be added using prefixes and globs. This
example will output net.p2p logs at the TRACE level, but all
other net* logs only at INFO:

MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE

Logs which are intended for the user (which Monero was using
a lot through epee, but really isn't a nice way to go things)
should use the "global" category. There are a few helper macros
for using this category, eg: MGINFO("this shows up by default")
or MGINFO_RED("this is red"), to try to keep a similar look
and feel for now.

Existing epee log macros still exist, and map to the new log
levels, but since they're used as a "user facing" UI element
as much as a logging system, they often don't map well to log
severities (ie, a log level 0 log may be an error, or may be
something we want the user to see, such as an important info).
In those cases, I tried to use the new macros. In other cases,
I left the existing macros in. When modifying logs, it is
probably best to switch to the new macros with explicit levels.

The --log-level options and set_log commands now also accept
category settings, in addition to the epee style log levels.

1 files changed, 14 insertions, 11 deletions

diff --git a/src/cryptonote_core/miner.cpp b/src/cryptonote_core/miner.cpp
index 6f4e706ed..51f508858 100644
--- a/src/cryptonote_core/miner.cpp
+++ b/src/cryptonote_core/miner.cpp
@@ -43,6 +43,9 @@
 #include "string_coding.h"
 #include "storages/portable_storage_template_helper.h"
 
+#undef MONERO_DEFAULT_LOG_CATEGORY
+#define MONERO_DEFAULT_LOG_CATEGORY "miner"
+
 using namespace epee;
 
 #include "miner.h"
@@ -193,7 +196,7 @@ namespace cryptonote
       m_config_folder_path = boost::filesystem::path(command_line::get_arg(vm, arg_extra_messages)).parent_path().string();
       m_config = AUTO_VAL_INIT(m_config);
       epee::serialization::load_t_from_json_file(m_config, m_config_folder_path + "/" + MINER_CONFIG_FILE_NAME);
-      LOG_PRINT_L0("Loaded " << m_extra_messages.size() << " extra messages, current index " << m_config.current_extra_message_index);
+      MINFO("Loaded " << m_extra_messages.size() << " extra messages, current index " << m_config.current_extra_message_index);
     }
 
     if(command_line::has_arg(vm, arg_start_mining))
@@ -278,11 +281,11 @@ namespace cryptonote
   //-----------------------------------------------------------------------------------------------------
   bool miner::stop()
   {
-    LOG_PRINT_L1("Miner has received stop signal");
+    MTRACE("Miner has received stop signal");
 
     if (!is_mining())
     {
-      LOG_PRINT_L1("Not mining - nothing to stop" );
+      MDEBUG("Not mining - nothing to stop" );
       return true;
     }
 
@@ -292,7 +295,7 @@ namespace cryptonote
     BOOST_FOREACH(boost::thread& th, m_threads)
       th.join();
 
-    LOG_PRINT_L0("Mining has been stopped, " << m_threads.size() << " finished" );
+    MINFO("Mining has been stopped, " << m_threads.size() << " finished" );
     m_threads.clear();
     return true;
   }
@@ -328,7 +331,7 @@ namespace cryptonote
     CRITICAL_REGION_LOCAL(m_miners_count_lock);
     ++m_pausers_count;
     if(m_pausers_count == 1 && is_mining())
-      LOG_PRINT_L2("MINING PAUSED");
+      MDEBUG("MINING PAUSED");
   }
   //-----------------------------------------------------------------------------------------------------
   void miner::resume()
@@ -338,17 +341,17 @@ namespace cryptonote
     if(m_pausers_count < 0)
     {
       m_pausers_count = 0;
-      LOG_PRINT_RED_L0("Unexpected miner::resume() called");
+      MERROR("Unexpected miner::resume() called");
     }
     if(!m_pausers_count && is_mining())
-      LOG_PRINT_L2("MINING RESUMED");
+      MDEBUG("MINING RESUMED");
   }
   //-----------------------------------------------------------------------------------------------------
   bool miner::worker_thread()
   {
     uint32_t th_local_index = boost::interprocess::ipcdetail::atomic_inc32(&m_thread_index);
-    LOG_PRINT_L0("Miner thread was started ["<< th_local_index << "]");
-    log_space::log_singletone::set_thread_log_prefix(std::string("[miner ") + std::to_string(th_local_index) + "]");
+    MGINFO("Miner thread was started ["<< th_local_index << "]");
+    MLOG_SET_THREAD_NAME(std::string("[miner ") + std::to_string(th_local_index) + "]");
     uint32_t nonce = m_starter_nonce + th_local_index;
     uint64_t height = 0;
     difficulty_type local_diff = 0;
@@ -389,7 +392,7 @@ namespace cryptonote
       {
         //we lucky!
         ++m_config.current_extra_message_index;
-        LOG_PRINT_GREEN("Found block for difficulty: " << local_diff, LOG_LEVEL_0);
+        MGINFO_GREEN("Found block for difficulty: " << local_diff);
         if(!m_phandler->handle_block_found(b))
         {
           --m_config.current_extra_message_index;
@@ -404,7 +407,7 @@ namespace cryptonote
       ++m_hashes;
     }
     slow_hash_free_state();
-    LOG_PRINT_L0("Miner thread stopped ["<< th_local_index << "]");
+    MGINFO("Miner thread stopped ["<< th_local_index << "]");
     return true;
   }
   //-----------------------------------------------------------------------------------------------------