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-rw-r--r--lib/remote/eventshandler.cpp137
1 files changed, 137 insertions, 0 deletions
diff --git a/lib/remote/eventshandler.cpp b/lib/remote/eventshandler.cpp
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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;
+ }
+ }
+}
+