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fix: dynamic log level update from patch.cfg without container restart

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When log.log_level is present in patch.cfg, apply_patch_config() now
updates the live plog logger severity via plog::get()->setMaxSeverity()
in addition to persisting the change to hp.cfg and the runtime cfg struct.

Previously log level was only read at startup (hplog::init()) and could
not be changed on a running node without a container restart. This meant
operators had no way to change log verbosity on external Evernode hosts
where they don't control the container lifecycle.

The fix uses plog's built-in setMaxSeverity() API which is thread-safe
and takes effect immediately on the next log statement.
This commit is contained in:
rippleitinnz
2026-05-19 16:13:24 +12:00
parent 1117dda575
commit b525498d39
1 changed files with 23 additions and 0 deletions
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23
src/conf.cpp
View File

@@ -853,6 +853,29 @@ namespace conf
return -1;
}
// Apply log level change dynamically if present in patch config.
// Uses plog::get()->setMaxSeverity() to update the live logger without restart.
try {
if (jdoc.contains("log") && jdoc["log"].contains("log_level")) {
const std::string new_log_level = jdoc["log"]["log_level"].as<std::string>();
const std::unordered_set<std::string> valid_loglevels({"dbg", "inf", "wrn", "err"});
if (valid_loglevels.count(new_log_level) == 1) {
cfg.log.log_level = new_log_level;
cfg.log.log_level_type = get_loglevel_type(new_log_level);
temp_cfg.log.log_level = new_log_level;
temp_cfg.log.log_level_type = get_loglevel_type(new_log_level);
plog::Severity new_plog_level;
if (cfg.log.log_level_type == LOG_SEVERITY::DEBUG) new_plog_level = plog::Severity::debug;
else if (cfg.log.log_level_type == LOG_SEVERITY::INFO) new_plog_level = plog::Severity::info;
else if (cfg.log.log_level_type == LOG_SEVERITY::WARN) new_plog_level = plog::Severity::warning;
else new_plog_level = plog::Severity::error;
plog::get()->setMaxSeverity(new_plog_level);
LOG_INFO << "Log level updated dynamically to: " << new_log_level;
}
}
} catch (const std::exception &e) {
LOG_ERROR << "Error applying log level from patch config: " << e.what();
}
LOG_INFO << "Contract config updated from patch file.";
return 0;
}