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https://github.com/Icinga/icinga2.git
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The wait group gets passed to HttpServerConnection, then down to the HttpHandlers. For those handlers that modify the program state, the wait group is locked so ApiListener will wait on Stop() for the request to complete. If the request iterates over config objects, a further check on the state of the wait group is added to abort early and not delay program shutdown. In that case, 503 responses will be sent to the client. Additionally, in HttpServerConnection, no further requests than the one already started will be allowed once the wait group is joining.
96 lines
2.0 KiB
C++
96 lines
2.0 KiB
C++
/* Icinga 2 | (c) 2024 Icinga GmbH | GPLv2+ */
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#include "base/defer.hpp"
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#include "remote/filterutility.hpp"
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#include "remote/httputility.hpp"
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#include "remote/mallocinfohandler.hpp"
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#include <cstddef>
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#include <cstdio>
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#include <string>
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#ifdef HAVE_MALLOC_INFO
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# include <errno.h>
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# include <malloc.h>
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#endif /* HAVE_MALLOC_INFO */
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using namespace icinga;
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REGISTER_URLHANDLER("/v1/debug/malloc_info", MallocInfoHandler);
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bool MallocInfoHandler::HandleRequest(
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const WaitGroup::Ptr&,
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AsioTlsStream&,
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const ApiUser::Ptr& user,
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boost::beast::http::request<boost::beast::http::string_body>& request,
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const Url::Ptr& url,
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boost::beast::http::response<boost::beast::http::string_body>& response,
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const Dictionary::Ptr& params,
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boost::asio::yield_context&,
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HttpServerConnection&
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)
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{
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namespace http = boost::beast::http;
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if (url->GetPath().size() != 3) {
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return false;
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}
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if (request.method() != http::verb::get) {
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return false;
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}
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FilterUtility::CheckPermission(user, "debug");
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#ifndef HAVE_MALLOC_INFO
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HttpUtility::SendJsonError(response, params, 501, "malloc_info(3) not available.");
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#else /* HAVE_MALLOC_INFO */
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char* buf = nullptr;
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size_t bufSize = 0;
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FILE* f = nullptr;
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Defer release ([&f, &buf]() {
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if (f) {
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(void)fclose(f);
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}
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free(buf);
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});
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f = open_memstream(&buf, &bufSize);
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if (!f) {
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auto error (errno);
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("open_memstream")
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<< boost::errinfo_errno(error));
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}
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if (malloc_info(0, f)) {
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auto error (errno);
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("malloc_info")
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<< boost::errinfo_errno(error));
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}
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auto closeErr (fclose(f));
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f = nullptr;
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if (closeErr) {
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auto error (errno);
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("fclose")
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<< boost::errinfo_errno(error));
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}
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response.result(200);
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response.set(http::field::content_type, "application/xml");
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response.body() = std::string(buf, bufSize);
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response.content_length(response.body().size());
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#endif /* HAVE_MALLOC_INFO */
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return true;
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}
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