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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/util/signalhandler.h>
#include <vespa/fnet/frt/supervisor.h>
#include <vespa/fnet/frt/rpcrequest.h>
#include <vespa/fnet/frt/target.h>
class RPCInfo
{
public:
void GetReq(FRT_RPCRequest **req, FRT_Supervisor *supervisor)
{
if ((*req) != nullptr)
(*req)->internal_subref();
(*req) = supervisor->AllocRPCRequest();
}
void FreeReqs(FRT_RPCRequest *r1, FRT_RPCRequest *r2)
{
if (r1 != nullptr)
r1->internal_subref();
if (r2 != nullptr)
r2->internal_subref();
}
void DumpMethodInfo(const char *indent, FRT_RPCRequest *info,
const char *name)
{
if (info->IsError()) {
printf("%sMETHOD %s\n", indent, name);
printf("%s [error(%d): %s]\n\n", indent,
info->GetErrorCode(),
info->GetErrorMessage());
return;
}
const char *desc = info->GetReturn()->GetValue(0)._string._str;
const char *arg = info->GetReturn()->GetValue(1)._string._str;
const char *ret = info->GetReturn()->GetValue(2)._string._str;
uint32_t argCnt = strlen(arg);
uint32_t retCnt = strlen(ret);
FRT_StringValue *argName = info->GetReturn()->GetValue(3)._string_array._pt;
FRT_StringValue *argDesc = info->GetReturn()->GetValue(4)._string_array._pt;
FRT_StringValue *retName = info->GetReturn()->GetValue(5)._string_array._pt;
FRT_StringValue *retDesc = info->GetReturn()->GetValue(6)._string_array._pt;
printf("%sMETHOD %s\n", indent, name);
printf("%s DESCRIPTION:\n"
"%s %s\n", indent, indent, desc);
if (argCnt > 0) {
printf("%s PARAMS:\n", indent);
for (uint32_t a = 0; a < argCnt; a++)
printf("%s [%c][%s] %s\n", indent, arg[a], argName[a]._str,
argDesc[a]._str);
}
if (retCnt > 0) {
printf("%s RETURN:\n", indent);
for (uint32_t r = 0; r < retCnt; r++)
printf("%s [%c][%s] %s\n", indent, ret[r], retName[r]._str,
retDesc[r]._str);
}
printf("\n");
}
int main(int argc, char **argv)
{
if (argc < 2) {
printf("usage : rpc_info <connectspec> [verbose]\n");
return 1;
}
bool verbose = (argc > 2 && strcmp(argv[2], "verbose") == 0);
fnet::frt::StandaloneFRT server;
FRT_Supervisor & supervisor = server.supervisor();
FRT_Target *target = supervisor.GetTarget(argv[1]);
FRT_RPCRequest *m_list = nullptr;
FRT_RPCRequest *info = nullptr;
GetReq(&info, &supervisor);
info->SetMethodName("frt.rpc.ping");
target->InvokeSync(info, 5.0);
if (info->IsError()) {
fprintf(stderr, "Error talking to %s\n", argv[1]);
FreeReqs(m_list, info);
return 1;
}
GetReq(&m_list, &supervisor);
m_list->SetMethodName("frt.rpc.getMethodList");
target->InvokeSync(m_list, 5.0);
if (!m_list->IsError()) {
uint32_t numMethods = m_list->GetReturn()->GetValue(0)._string_array._len;
FRT_StringValue *methods = m_list->GetReturn()->GetValue(0)._string_array._pt;
FRT_StringValue *arglist = m_list->GetReturn()->GetValue(1)._string_array._pt;
FRT_StringValue *retlist = m_list->GetReturn()->GetValue(2)._string_array._pt;
for (uint32_t m = 0; m < numMethods; m++) {
if (verbose) {
GetReq(&info, &supervisor);
info->SetMethodName("frt.rpc.getMethodInfo");
info->GetParams()->AddString(methods[m]._str);
target->InvokeSync(info, 5.0);
DumpMethodInfo("", info, methods[m]._str);
} else {
printf("METHOD [%s] <- %s <- [%s]\n",
retlist[m]._str, methods[m]._str, arglist[m]._str);
}
}
} else {
fprintf(stderr, " [error(%d): %s]\n",
m_list->GetErrorCode(),
m_list->GetErrorMessage());
}
FreeReqs(m_list, info);
target->internal_subref();
return 0;
}
};
int main(int argc, char **argv) {
vespalib::SignalHandler::PIPE.ignore();
RPCInfo myapp;
return myapp.main(argc, argv);
}
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