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#include "pch.hpp"
#include <string.h>
#include <boost/foreach.hpp>
#include "fuse.h"
#include "lockHelpers.h"
NetFS::FuseApp::FuseApp(int & argc, char ** argv) :
_argc(argc),
_argv(argv),
openDirID(0),
openFileID(0)
{
}
NetFS::FuseApp::~FuseApp()
{
BOOST_FOREACH(const OpenDirs::value_type & of, openDirs) {
of.second->remote->close();
}
BOOST_FOREACH(const OpenFiles::value_type & of, openFiles) {
of.second->remote->close();
}
volume->disconnect();
if (ic) {
ic->destroy();
}
}
void *
NetFS::FuseApp::init(struct fuse_conn_info *)
{
ic = Ice::initialize(_argc, _argv);
fc = FuseConfig::Load(configPath);
return NULL;
}
int
NetFS::FuseApp::opt_parse(void *, const char * arg, int, struct fuse_args *)
{
if (strncmp(arg, "--Ice.", 6) == 0) {
return 0;
}
else if (arg[0] == '-') {
return 1;
}
else if (exportName.empty()) {
const char * colon = strchr(arg, ':');
exportName = colon + 1;
configPath.assign(arg, colon);
return 0;
}
else if (mountPoint.empty()) {
mountPoint = arg;
return 1;
}
return 1;
}
void
NetFS::FuseApp::connectToService()
{
if (!service) {
Lock(_lock);
FuseConfig::ExportPtr e = fc->exports[exportName];
const std::string & ep = *e->endpoints.begin();
service = NetFS::ServicePrx::checkedCast(ic->stringToProxy("Service:" + ep));
if (!service) {
throw "Invalid service proxy";
}
}
}
void
NetFS::FuseApp::connectToVolume()
{
if (!volume) {
volume = service->connect(exportName, "bar");
if (!volume) {
throw "Invalid filesystem proxy";
}
}
}
void
NetFS::FuseApp::connectHandles()
{
BOOST_FOREACH(const OpenFiles::value_type & of, openFiles) {
try {
of.second->remote->ice_ping();
}
catch (const Ice::ObjectNotExistException &) {
of.second->remote = volume->open(reqEnv(), of.second->path, of.second->flags);
}
}
BOOST_FOREACH(const OpenDirs::value_type & of, openDirs) {
try {
of.second->remote->ice_ping();
}
catch (const Ice::ObjectNotExistException &) {
of.second->remote = volume->opendir(reqEnv(), of.second->path);
}
}
}
void
NetFS::FuseApp::verifyConnection()
{
Lock(_lock);
if (service) {
try {
service->ice_ping();
}
catch (const Ice::Exception &) {
service = NULL;
}
}
if (volume) {
try {
volume->ice_ping();
}
catch (const Ice::Exception &) {
volume = NULL;
}
}
}
int
NetFS::FuseApp::onError(const std::exception & e) throw()
{
if (dynamic_cast<const Ice::ObjectNotExistException *>(&e)) {
verifyConnection();
connectToService();
connectToVolume();
connectHandles();
return 0;
}
return FuseAppBase::onError(e);
}
NetFS::ReqEnv
NetFS::FuseApp::reqEnv()
{
connectToService();
connectToVolume();
struct fuse_context * c = fuse_get_context();
return { uentries.getName(c->uid), gentries.getName(c->gid) };
}
int
main(int argc, char* argv[])
{
return FuseAppBase::run(argc, argv, new NetFS::FuseApp(argc, argv));
}
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