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/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#include "remote/eventshandler.hpp"
#include "remote/httputility.hpp"
#include "remote/filterutility.hpp"
#include "config/configcompiler.hpp"
#include "config/expression.hpp"
#include "base/defer.hpp"
#include "base/io-engine.hpp"
#include "base/objectlock.hpp"
#include "base/json.hpp"
#include <boost/asio/buffer.hpp>
#include <boost/asio/write.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <map>
#include <set>
using namespace icinga;
REGISTER_URLHANDLER("/v1/events", EventsHandler);
const std::map<String, EventType> l_EventTypes ({
{"AcknowledgementCleared", EventType::AcknowledgementCleared},
{"AcknowledgementSet", EventType::AcknowledgementSet},
{"CheckResult", EventType::CheckResult},
{"CommentAdded", EventType::CommentAdded},
{"CommentRemoved", EventType::CommentRemoved},
{"DowntimeAdded", EventType::DowntimeAdded},
{"DowntimeRemoved", EventType::DowntimeRemoved},
{"DowntimeStarted", EventType::DowntimeStarted},
{"DowntimeTriggered", EventType::DowntimeTriggered},
{"Flapping", EventType::Flapping},
{"Notification", EventType::Notification},
{"StateChange", EventType::StateChange},
{"ObjectCreated", EventType::ObjectCreated},
{"ObjectDeleted", EventType::ObjectDeleted},
{"ObjectModified", EventType::ObjectModified}
});
const String l_ApiQuery ("<API query>");
bool EventsHandler::HandleRequest(
AsioTlsStream& stream,
const ApiUser::Ptr& user,
boost::beast::http::request<boost::beast::http::string_body>& request,
const Url::Ptr& url,
boost::beast::http::response<boost::beast::http::string_body>& response,
const Dictionary::Ptr& params,
boost::asio::yield_context& yc,
HttpServerConnection& server
)
{
namespace asio = boost::asio;
namespace http = boost::beast::http;
if (url->GetPath().size() != 2)
return false;
if (request.method() != http::verb::post)
return false;
if (request.version() == 10) {
HttpUtility::SendJsonError(response, params, 400, "HTTP/1.0 not supported for event streams.");
return true;
}
Array::Ptr types = params->Get("types");
if (!types) {
HttpUtility::SendJsonError(response, params, 400, "'types' query parameter is required.");
return true;
}
{
ObjectLock olock(types);
for (const String& type : types) {
FilterUtility::CheckPermission(user, "events/" + type);
}
}
String queueName = HttpUtility::GetLastParameter(params, "queue");
if (queueName.IsEmpty()) {
HttpUtility::SendJsonError(response, params, 400, "'queue' query parameter is required.");
return true;
}
std::set<EventType> eventTypes;
{
ObjectLock olock(types);
for (const String& type : types) {
auto typeId (l_EventTypes.find(type));
if (typeId != l_EventTypes.end()) {
eventTypes.emplace(typeId->second);
}
}
}
EventsSubscriber subscriber (std::move(eventTypes), HttpUtility::GetLastParameter(params, "filter"), l_ApiQuery);
server.StartStreaming();
response.result(http::status::ok);
response.set(http::field::content_type, "application/json");
IoBoundWorkSlot dontLockTheIoThread (yc);
http::async_write(stream, response, yc);
stream.async_flush(yc);
asio::const_buffer newLine ("\n", 1);
for (;;) {
auto event (subscriber.GetInbox()->Shift(yc));
if (event) {
CpuBoundWork buildingResponse (yc);
String body = JsonEncode(event);
boost::algorithm::replace_all(body, "\n", "");
asio::const_buffer payload (body.CStr(), body.GetLength());
buildingResponse.Done();
asio::async_write(stream, payload, yc);
asio::async_write(stream, newLine, yc);
stream.async_flush(yc);
} else if (server.Disconnected()) {
return true;
}
}
}
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