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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/target.h>
#include <vespa/fnet/frt/rpcrequest.h>
#include <sstream>
#include <vespa/log/log.h>
LOG_SETUP("vespa-slobrok-cmd");
class Slobrok_CMD
{
private:
std::unique_ptr<fnet::frt::StandaloneFRT> _server;
FRT_Target *_target;
Slobrok_CMD(const Slobrok_CMD &);
Slobrok_CMD &operator=(const Slobrok_CMD &);
public:
Slobrok_CMD() : _server(), _target(nullptr) {}
~Slobrok_CMD();
int usage(const char *self);
void initRPC(const char *spec);
void finiRPC();
int main(int argc, char **argv);
};
Slobrok_CMD::~Slobrok_CMD()
{
LOG_ASSERT(! _server);
LOG_ASSERT(_target == nullptr);
}
int
Slobrok_CMD::usage(const char *self)
{
fprintf(stderr, "usage: %s <port|spec> <cmd> [args]\n", self);
fprintf(stderr, "with cmd one of:\n");
fprintf(stderr, " slobrok.callback.listNamesServed\n");
fprintf(stderr, " slobrok.internal.listManagedRpcServers\n");
fprintf(stderr, " slobrok.admin.listAllRpcServers\n");
fprintf(stderr, " slobrok.lookupRpcServer {pattern}\n");
fprintf(stderr, " slobrok.registerRpcServer name {spec}\n");
fprintf(stderr, " slobrok.unregisterRpcServer {name} {spec}\n");
fprintf(stderr, " slobrok.admin.addPeer {name} {spec}\n");
fprintf(stderr, " slobrok.admin.removePeer {name} {spec}\n");
fprintf(stderr, " slobrok.system.stop\n");
fprintf(stderr, " slobrok.system.version\n");
fprintf(stderr, " system.stop\n");
return 1;
}
void
Slobrok_CMD::initRPC(const char *spec)
{
_server = std::make_unique<fnet::frt::StandaloneFRT>();
_target = _server->supervisor().GetTarget(spec);
}
void
Slobrok_CMD::finiRPC()
{
if (_target != nullptr) {
_target->internal_subref();
_target = nullptr;
}
if (_server) {
_server.reset();
}
}
int
Slobrok_CMD::main(int argc, char **argv)
{
if (argc < 3) {
return usage(argv[0]);
}
int port = atoi(argv[1]);
if (port == 0) {
initRPC(argv[1]);
} else {
std::ostringstream tmp;
tmp << "tcp/localhost:";
tmp << port;
initRPC(tmp.str().c_str());
}
bool threeTables = false;
bool twoTables = false;
FRT_RPCRequest *req = _server->supervisor().AllocRPCRequest();
req->SetMethodName(argv[2]);
if (strcmp(argv[2], "slobrok.admin.listAllRpcServers") == 0) {
threeTables = true;
// no params
} else if (strcmp(argv[2], "slobrok.internal.listManagedRpcServers") == 0) {
twoTables = true;
// no params
} else if (strcmp(argv[2], "slobrok.callback.listNamesServed") == 0
|| strcmp(argv[2], "slobrok.internal.listManagedRpcServers") == 0
|| strcmp(argv[2], "slobrok.admin.listAllRpcServers") == 0
|| strcmp(argv[2], "slobrok.system.stop") == 0
|| strcmp(argv[2], "slobrok.system.version") == 0
|| strcmp(argv[2], "system.stop") == 0)
{
// no params
} else if (strcmp(argv[2], "slobrok.lookupRpcServer") == 0
&& argc == 4)
{
twoTables = true;
// one param
req->GetParams()->AddString(argv[3]);
} else if ((strcmp(argv[2], "slobrok.registerRpcServer") == 0
|| strcmp(argv[2], "slobrok.unregisterRpcServer") == 0
|| strcmp(argv[2], "slobrok.admin.addPeer") == 0
|| strcmp(argv[2], "slobrok.admin.removePeer") == 0)
&& argc == 5)
{
// two params
req->GetParams()->AddString(argv[3]);
req->GetParams()->AddString(argv[4]);
} else {
finiRPC();
return usage(argv[0]);
}
_target->InvokeSync(req, 5.0);
if (req->IsError()) {
fprintf(stderr, "vespa-slobrok-cmd error %d: %s\n",
req->GetErrorCode(), req->GetErrorMessage());
} else {
FRT_Values &answer = *(req->GetReturn());
const char *atypes = answer.GetTypeString();
if (threeTables
&& strcmp(atypes, "SSS") == 0
&& answer[0]._string_array._len > 0
&& answer[0]._string_array._len == answer[1]._string_array._len
&& answer[0]._string_array._len == answer[2]._string_array._len)
{
for (uint32_t j = 0; j < answer[0]._string_array._len; j++) {
printf("%s\t%s\t%s\n",
answer[0]._string_array._pt[j]._str,
answer[1]._string_array._pt[j]._str,
answer[2]._string_array._pt[j]._str);
}
} else if (twoTables
&& strcmp(atypes, "SS") == 0
&& answer[0]._string_array._len > 0
&& answer[0]._string_array._len == answer[1]._string_array._len)
{
for (uint32_t j = 0; j < answer[0]._string_array._len; j++) {
printf("%s\t%s\n",
answer[0]._string_array._pt[j]._str,
answer[1]._string_array._pt[j]._str);
}
} else {
fprintf(stderr, "vespa-slobrok-cmd OK, returntypes '%s'\n", atypes);
uint32_t idx = 0;
while (atypes != nullptr && *atypes != '\0') {
switch (*atypes) {
case 's':
printf(" string = '%s'\n", answer[idx]._string._str);
break;
case 'S':
printf(" strings [%d]\n", answer[idx]._string_array._len);
for (uint32_t j = 0; j < answer[idx]._string_array._len; j++) {
printf("\t'%s'\n", answer[idx]._string_array._pt[j]._str);
}
break;
default:
printf(" unknown type %c\n", *atypes);
}
++atypes;
++idx;
}
}
}
req->internal_subref();
finiRPC();
return 0;
}
int main(int argc, char **argv) {
vespalib::SignalHandler::PIPE.ignore();
Slobrok_CMD sb_cmd;
return sb_cmd.main(argc, argv);
}
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