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fix: solve runtime issues with emscripten build

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Signed-off-by: Jason Dellaluce <jasondellaluce@gmail.com>
Co-authored-by: Rohith Raju <rohithraju488@gmail.com>
This commit is contained in:
Jason Dellaluce 2023-06-21 12:12:15 +00:00 committed by poiana
parent 0faa45669b
commit ce6368a89e
5 changed files with 40 additions and 18 deletions
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1
userspace/falco/CMakeLists.txt
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@ -167,6 +167,7 @@ target_include_directories(falco PUBLIC ${FALCO_INCLUDE_DIRECTORIES})
if (EMSCRIPTEN)
target_compile_options(falco PRIVATE "-sDISABLE_EXCEPTION_CATCHING=0")
target_link_options(falco PRIVATE "-sALLOW_MEMORY_GROWTH=1")
target_link_options(falco PRIVATE "-sDISABLE_EXCEPTION_CATCHING=0")
target_link_options(falco PRIVATE "-sEXPORTED_FUNCTIONS=['_main','_htons','_ntohs']")
endif()

2
userspace/falco/app/actions/load_plugins.cpp
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@ -25,7 +25,7 @@ falco::app::run_result falco::app::actions::load_plugins(falco::app::state& s)
#if !defined(MUSL_OPTIMIZED) and !defined(__EMSCRIPTEN__)
if (!s.config->m_plugins.empty())
{
return run_result::fatal("Loading plugins dynamic libraries is not supported with this Falco build");
return run_result::fatal("Loading plugins dynamic libraries is not supported by this Falco build");
}
#endif
// Initialize the set of loaded event sources.

7
userspace/falco/app/actions/process_events.cpp
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@ -493,6 +493,13 @@ falco::app::run_result falco::app::actions::process_events(falco::app::state& s)
{
print_enabled_event_sources(s);
#ifdef __EMSCRIPTEN__
if(s.enabled_sources.size() > 1)
{
return run_result::fatal("enabling multiple event sources is not supported by this Falco build");
}
#endif
// start event processing for all enabled sources
falco::semaphore termination_sem(s.enabled_sources.size());
std::vector<live_context> ctxs;

47
userspace/falco/falco_outputs.cpp
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@ -64,13 +64,16 @@ falco_outputs::falco_outputs(
{
add_output(output);
}
#ifndef __EMSCRIPTEN__
m_worker_thread = std::thread(&falco_outputs::worker, this);
#endif
}
falco_outputs::~falco_outputs()
{
#ifndef __EMSCRIPTEN__
this->stop_worker();
#endif
for(auto o : m_outputs)
{
delete o;
@ -274,6 +277,11 @@ inline void falco_outputs::push(const ctrl_msg& cmsg)
fprintf(stderr, "Fatal error: Output queue reached maximum capacity. Exiting.\n");
exit(EXIT_FAILURE);
}
#else
for (auto o : m_outputs)
{
process_msg(o, cmsg);
}
#endif
}
@ -297,26 +305,12 @@ void falco_outputs::worker() noexcept
m_queue.pop(cmsg);
#endif
for(const auto o : m_outputs)
for(auto o : m_outputs)
{
wd.set_timeout(timeout, o->get_name());
try
{
switch(cmsg.type)
{
case ctrl_msg_type::CTRL_MSG_OUTPUT:
o->output(&cmsg);
break;
case ctrl_msg_type::CTRL_MSG_CLEANUP:
case ctrl_msg_type::CTRL_MSG_STOP:
o->cleanup();
break;
case ctrl_msg_type::CTRL_MSG_REOPEN:
o->reopen();
break;
default:
falco_logger::log(LOG_DEBUG, "Outputs worker received an unknown message type\n");
}
process_msg(o, cmsg);
}
catch(const std::exception &e)
{
@ -326,3 +320,22 @@ void falco_outputs::worker() noexcept
wd.cancel_timeout();
} while(cmsg.type != ctrl_msg_type::CTRL_MSG_STOP);
}
inline void falco_outputs::process_msg(falco::outputs::abstract_output* o, const ctrl_msg& cmsg)
{
switch(cmsg.type)
{
case ctrl_msg_type::CTRL_MSG_OUTPUT:
o->output(&cmsg);
break;
case ctrl_msg_type::CTRL_MSG_CLEANUP:
case ctrl_msg_type::CTRL_MSG_STOP:
o->cleanup();
break;
case ctrl_msg_type::CTRL_MSG_REOPEN:
o->reopen();
break;
default:
falco_logger::log(LOG_DEBUG, "Outputs worker received an unknown message type\n");
}
}

1
userspace/falco/falco_outputs.h
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@ -118,4 +118,5 @@ private:
void worker() noexcept;
void stop_worker();
void add_output(falco::outputs::config oc);
inline void process_msg(falco::outputs::abstract_output* o, const ctrl_msg& cmsg);
};