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[rpc] Add logging RPC

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Adds an RPC to get and set currently active logging categories.
This commit is contained in:
John Newbery
2017-04-03 13:39:11 -04:00
parent 4d9950d3bc
commit 5255aca3f4
4 changed files with 83 additions and 3 deletions
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56
src/rpc/misc.cpp
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@@ -555,6 +555,59 @@ UniValue getmemoryinfo(const JSONRPCRequest& request)
}
}
uint32_t getCategoryMask(UniValue cats) {
cats = cats.get_array();
uint32_t mask = 0;
for (unsigned int i = 0; i < cats.size(); ++i) {
uint32_t flag = 0;
std::string cat = cats[i].get_str();
if (!GetLogCategory(&flag, &cat)) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "unknown logging category " + cat);
}
mask |= flag;
}
return mask;
}
UniValue logging(const JSONRPCRequest& request)
{
if (request.fHelp || request.params.size() > 2) {
throw std::runtime_error(
"logging [include,...] <exclude>\n"
"Gets and sets the logging configuration.\n"
"When called without an argument, returns the list of categories that are currently being debug logged.\n"
"When called with arguments, adds or removes categories from debug logging.\n"
"The valid logging categories are: " + ListLogCategories() + "\n"
"libevent logging is configured on startup and cannot be modified by this RPC during runtime."
"Arguments:\n"
"1. \"include\" (array of strings) add debug logging for these categories.\n"
"2. \"exclude\" (array of strings) remove debug logging for these categories.\n"
"\nResult: <categories> (string): a list of the logging categories that are active.\n"
"\nExamples:\n"
+ HelpExampleCli("logging", "\"[\\\"all\\\"]\" \"[\\\"http\\\"]\"")
+ HelpExampleRpc("logging", "[\"all\"], \"[libevent]\"")
);
}
uint32_t originalLogCategories = logCategories;
if (request.params.size() > 0 && request.params[0].isArray()) {
logCategories |= getCategoryMask(request.params[0]);
}
if (request.params.size() > 1 && request.params[1].isArray()) {
logCategories &= ~getCategoryMask(request.params[1]);
}
UniValue result(UniValue::VOBJ);
std::vector<CLogCategoryActive> vLogCatActive = ListActiveLogCategories();
for (const auto& logCatActive : vLogCatActive) {
result.pushKV(logCatActive.category, logCatActive.active);
}
return result;
}
UniValue echo(const JSONRPCRequest& request)
{
if (request.fHelp)
@@ -581,7 +634,8 @@ static const CRPCCommand commands[] =
/* Not shown in help */
{ "hidden", "setmocktime", &setmocktime, true, {"timestamp"}},
{ "hidden", "echo", &echo, true, {"arg0","arg1","arg2","arg3","arg4","arg5","arg6","arg7","arg8","arg9"}},
{ "hidden", "echojson", &echo, true, {"arg0","arg1","arg2","arg3","arg4","arg5","arg6","arg7","arg8","arg9"}},
{ "hidden", "echojson", &echo, true, {"arg0","arg1","arg2","arg3","arg4","arg5","arg6","arg7","arg8","arg9"}},
{ "hidden", "logging", &logging, true, {"include", "exclude"}},
};
void RegisterMiscRPCCommands(CRPCTable &t)