Method SendRequest

lib/perfdata/elasticsearchwriter.cpp:454–598

}

void ElasticsearchWriter::SendRequest(const String& body)
{
	namespace beast = boost::beast;
	namespace http = beast::http;

	Url::Ptr url = new Url();

	url->SetScheme(GetEnableTls() ? "https" : "http");
	url->SetHost(GetHost());
	url->SetPort(GetPort());

	std::vector<String> path;

	/* Specify the index path. Best practice is a daily rotation.
	 * Example: http://localhost:9200/icinga2-2017.09.11?pretty=1
	 */
	path.emplace_back(GetIndex() + "-" + Utility::FormatDateTime("%Y.%m.%d", Utility::GetTime()));

	/* Use the bulk message format. */
	path.emplace_back("_bulk");

	url->SetPath(path);

	OptionalTlsStream stream;

	try {
		stream = Connect();
	} catch (const std::exception& ex) {
		Log(LogWarning, "ElasticsearchWriter")
			<< "Flush failed, cannot connect to Elasticsearch: " << DiagnosticInformation(ex, false);
		return;
	}

	Defer s ([&stream]() {
		if (stream.first) {
			stream.first->next_layer().shutdown();
		}
	});

	http::request<http::string_body> request (http::verb::post, std::string(url->Format(true)), 10);

	request.set(http::field::user_agent, "Icinga/" + Application::GetAppVersion());
	request.set(http::field::host, url->GetHost() + ":" + url->GetPort());

	/* Specify required headers by Elasticsearch. */
	request.set(http::field::accept, "application/json");

	/* Use application/x-ndjson for bulk streams. While ES
	 * is able to handle application/json, the newline separator
	 * causes problems with Logstash (#6609).
	 */
	request.set(http::field::content_type, "application/x-ndjson");

	/* Send authentication if configured. */
	String username = GetUsername();
	String password = GetPassword();

	if (!username.IsEmpty() && !password.IsEmpty())