1 files changed, 137 insertions, 0 deletions
diff --git a/lib/remote/eventshandler.cpp b/lib/remote/eventshandler.cpp
new file mode 100644
index 0000000..e05ef22
--- /dev/null
+++ b/lib/remote/eventshandler.cpp
@@ -0,0 +1,137 @@
+/* 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;
+		}
+	}
+}
+