C++ url::Ptr类代码示例

/**
 * Executes the auto completion script via HTTP and returns HTTP and user errors.
 *
 * @param session Local session handler.
 * @param command The auto completion string.
 * @param sandboxed Whether to run this sandboxed.
 * @return Result value, also contains user errors.
 */
Array::Ptr ConsoleCommand::AutoCompleteScript(const String& session, const String& command, bool sandboxed)
{
	/* Extend the url parameters for the request. */
	l_Url->SetPath({ "v1", "console", "auto-complete-script" });

	l_Url->SetQuery({
		{"session",   session},
		{"command",   command},
		{"sandboxed", sandboxed ? "1" : "0"}
	});

	Dictionary::Ptr jsonResponse = SendRequest();

	/* Extract the result, and handle user input errors too. */
	Array::Ptr results = jsonResponse->Get("results");
	Array::Ptr suggestions;

	if (results && results->GetLength() > 0) {
		Dictionary::Ptr resultInfo = results->Get(0);

		if (resultInfo->Get("code") >= 200 && resultInfo->Get("code") <= 299) {
			suggestions = resultInfo->Get("suggestions");
		} else {
			String errorMessage = resultInfo->Get("status");
			BOOST_THROW_EXCEPTION(ScriptError(errorMessage));
		}
	}

	return suggestions;
}

    virtual bool OnInit(void) override
    {
        Application::InitializeBase();

        Url::Ptr pUrl;

        if (argc < 2) {
            wxConfig config("IcingaStudio");
            wxString wUrl;

            if (!config.Read("url", &wUrl))
                wUrl = "https://localhost:5665/";

            std::string url = wUrl.ToStdString();

            ConnectForm f(NULL, new Url(url));
            if (f.ShowModal() != wxID_OK)
                return false;

            pUrl = f.GetUrl();
            url = pUrl->Format(true);
            wUrl = url;
            config.Write("url", wUrl);
        } else {
            pUrl = new Url(argv[1].ToStdString());
        }

        MainForm *m = new MainForm(NULL, pUrl);
        m->Show();

        return true;
    }

Dictionary::Ptr HttpUtility::FetchRequestParameters(const Url::Ptr& url, const std::string& body)
{
	Dictionary::Ptr result;

	if (!body.empty()) {
		Log(LogDebug, "HttpUtility")
			<< "Request body: '" << body << '\'';

		result = JsonDecode(body);
	}

	if (!result)
		result = new Dictionary();

	std::map<String, std::vector<String>> query;
	for (const auto& kv : url->GetQuery()) {
		query[kv.first].emplace_back(kv.second);
	}

	for (auto& kv : query) {
		result->Set(kv.first, Array::FromVector(kv.second));
	}

	return result;
}

ConnectForm::ConnectForm(wxWindow *parent, const Url::Ptr& url)
	: ConnectFormBase(parent)
{
#ifdef _WIN32
	SetIcon(wxICON(icinga));
#endif /* _WIN32 */

	std::string authority = url->GetAuthority();

	std::vector<std::string> tokens;
	boost::algorithm::split(tokens, authority, boost::is_any_of("@"));

	if (tokens.size() > 1) {
		std::vector<std::string> userinfo;
		boost::algorithm::split(userinfo, tokens[0], boost::is_any_of(":"));

		m_UserText->SetValue(userinfo[0]);
		m_PasswordText->SetValue(userinfo[1]);
	}

	std::vector<std::string> hostport;
	boost::algorithm::split(hostport, tokens.size() > 1 ? tokens[1] : tokens[0], boost::is_any_of(":"));

	m_HostText->SetValue(hostport[0]);

	if (hostport.size() > 1)
		m_PortText->SetValue(hostport[1]);
	else
		m_PortText->SetValue("5665");

	SetDefaultItem(m_ButtonsOK);
}

/**
 * Executes the DSL script via HTTP and returns HTTP and user errors.
 *
 * @param session Local session handler.
 * @param command The DSL string.
 * @param sandboxed Whether to run this sandboxed.
 * @return Result value, also contains user errors.
 */
Value ConsoleCommand::ExecuteScript(const String& session, const String& command, bool sandboxed)
{
	/* Extend the url parameters for the request. */
	l_Url->SetPath({"v1", "console", "execute-script"});

	l_Url->SetQuery({
		{"session",   session},
		{"command",   command},
		{"sandboxed", sandboxed ? "1" : "0"}
	});

	Dictionary::Ptr jsonResponse = SendRequest();

	/* Extract the result, and handle user input errors too. */
	Array::Ptr results = jsonResponse->Get("results");
	Value result;

	if (results && results->GetLength() > 0) {
		Dictionary::Ptr resultInfo = results->Get(0);

		if (resultInfo->Get("code") >= 200 && resultInfo->Get("code") <= 299) {
			result = resultInfo->Get("result");
		} else {
			String errorMessage = resultInfo->Get("status");

			DebugInfo di;
			Dictionary::Ptr debugInfo = resultInfo->Get("debug_info");

			if (debugInfo) {
				di.Path = debugInfo->Get("path");
				di.FirstLine = debugInfo->Get("first_line");
				di.FirstColumn = debugInfo->Get("first_column");
				di.LastLine = debugInfo->Get("last_line");
				di.LastColumn = debugInfo->Get("last_column");
			}

			bool incompleteExpression = resultInfo->Get("incomplete_expression");
			BOOST_THROW_EXCEPTION(ScriptError(errorMessage, di, incompleteExpression));
		}
	}

	return result;
}

bool ConsoleHandler::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 http = boost::beast::http;

	if (url->GetPath().size() != 3)
		return false;

	if (request.method() != http::verb::post)
		return false;

	QueryDescription qd;

	String methodName = url->GetPath()[2];

	FilterUtility::CheckPermission(user, "console");

	String session = HttpUtility::GetLastParameter(params, "session");

	if (session.IsEmpty())
		session = Utility::NewUniqueID();

	String command = HttpUtility::GetLastParameter(params, "command");

	bool sandboxed = HttpUtility::GetLastParameter(params, "sandboxed");

	if (methodName == "execute-script")
		return ExecuteScriptHelper(request, response, params, command, session, sandboxed);
	else if (methodName == "auto-complete-script")
		return AutocompleteScriptHelper(request, response, params, command, session, sandboxed);

	HttpUtility::SendJsonError(response, params, 400, "Invalid method specified: " + methodName);
	return true;
}

void ApiClient::ExecuteScript(const String& session, const String& command, bool sandboxed,
	const ExecuteScriptCompletionCallback& callback) const
{
	Url::Ptr url = new Url();
	url->SetScheme("https");
	url->SetHost(m_Connection->GetHost());
	url->SetPort(m_Connection->GetPort());
	url->SetPath({ "v1", "console", "execute-script" });

	std::map<String, std::vector<String> > params;
	params["session"].push_back(session);
	params["command"].push_back(command);
	params["sandboxed"].emplace_back(sandboxed ? "1" : "0");
	url->SetQuery(params);

	try {
		std::shared_ptr<HttpRequest> req = m_Connection->NewRequest();
		req->RequestMethod = "POST";
		req->RequestUrl = url;
		req->AddHeader("Authorization", "Basic " + Base64::Encode(m_User + ":" + m_Password));
		req->AddHeader("Accept", "application/json");
		m_Connection->SubmitRequest(req, std::bind(ExecuteScriptHttpCompletionCallback, _1, _2, callback));
	} catch (const std::exception&) {
		callback(boost::current_exception(), Empty);
	}
}

MainForm::MainForm(wxWindow *parent, const Url::Ptr& url)
	: MainFormBase(parent)
{
#ifdef _WIN32
	SetIcon(wxICON(icinga));
	SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE));
#endif /* _WIN32 */

	String port = url->GetPort();

	if (port.IsEmpty())
		port = "5665";

	m_ApiClient = new ApiClient(url->GetHost(), port, url->GetUsername(), url->GetPassword());
	m_ApiClient->GetTypes(boost::bind(&MainForm::TypesCompletionHandler, this, _1, _2, true));

	std::string title = url->Format() + " - Icinga Studio";
	SetTitle(title);

	m_ObjectsList->InsertColumn(0, "Name", 0, 300);
	
	m_PropertyGrid->SetColumnCount(3);
}

void ApiClient::GetTypes(const TypesCompletionCallback& callback) const
{
	Url::Ptr url = new Url();
	url->SetScheme("https");
	url->SetHost(m_Connection->GetHost());
	url->SetPort(m_Connection->GetPort());

	std::vector<String> path;
	path.push_back("v1");
	path.push_back("types");
	url->SetPath(path);

	try {
		boost::shared_ptr<HttpRequest> req = m_Connection->NewRequest();
		req->RequestMethod = "GET";
		req->RequestUrl = url;
		req->AddHeader("Authorization", "Basic " + Base64::Encode(m_User + ":" + m_Password));
		req->AddHeader("Accept", "application/json");
		m_Connection->SubmitRequest(req, boost::bind(TypesHttpCompletionCallback, _1, _2, callback));
	} catch (const std::exception& ex) {
		callback(boost::current_exception(), std::vector<ApiType::Ptr>());
	}
}

void ApiClient::GetObjects(const String& pluralType, const ObjectsCompletionCallback& callback,
    const std::vector<String>& names, const std::vector<String>& attrs, const std::vector<String>& joins, bool all_joins) const
{
	Url::Ptr url = new Url();
	url->SetScheme("https");
	url->SetHost(m_Connection->GetHost());
	url->SetPort(m_Connection->GetPort());

	std::vector<String> path;
	path.push_back("v1");
	path.push_back("objects");
	path.push_back(pluralType);
	url->SetPath(path);

	std::map<String, std::vector<String> > params;

	for (const String& name : names) {
		params[pluralType.ToLower()].push_back(name);
	}

	for (const String& attr : attrs) {
		params["attrs"].push_back(attr);
	}

	for (const String& join : joins) {
		params["joins"].push_back(join);
	}

	params["all_joins"].push_back(all_joins ? "1" : "0");

	url->SetQuery(params);

	try {
		boost::shared_ptr<HttpRequest> req = m_Connection->NewRequest();
		req->RequestMethod = "GET";
		req->RequestUrl = url;
		req->AddHeader("Authorization", "Basic " + Base64::Encode(m_User + ":" + m_Password));
		req->AddHeader("Accept", "application/json");
		m_Connection->SubmitRequest(req, boost::bind(ObjectsHttpCompletionCallback, _1, _2, callback));
	} catch (const std::exception& ex) {
		callback(boost::current_exception(), std::vector<ApiObject::Ptr>());
	}
}

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()));

	/* ES 6 removes multiple _type mappings: https://www.elastic.co/guide/en/elasticsearch/reference/6.x/removal-of-types.html
	 * Best practice is to statically define 'doc', as ES 5.X does not allow types starting with '_'.
	 */
	path.emplace_back("doc");

	/* 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())
		request.set(http::field::authorization, "Basic " + Base64::Encode(username + ":" + password));

	request.body() = body;
	request.set(http::field::content_length, request.body().size());

	/* Don't log the request body to debug log, this is already done above. */
	Log(LogDebug, "ElasticsearchWriter")
		<< "Sending " << request.method_string() << " request" << ((!username.IsEmpty() && !password.IsEmpty()) ? " with basic auth" : "" )
		<< " to '" << url->Format() << "'.";

	try {
		if (stream.first) {
			http::write(*stream.first, request);
			stream.first->flush();
		} else {
			http::write(*stream.second, request);
			stream.second->flush();
		}
	} catch (const std::exception&) {
		Log(LogWarning, "ElasticsearchWriter")
			<< "Cannot write to HTTP API on host '" << GetHost() << "' port '" << GetPort() << "'.";
		throw;
	}

	http::parser<false, http::string_body> parser;
	beast::flat_buffer buf;

	try {
		if (stream.first) {
			http::read(*stream.first, buf, parser);
		} else {
			http::read(*stream.second, buf, parser);
		}
	} catch (const std::exception& ex) {
		Log(LogWarning, "ElasticsearchWriter")
			<< "Failed to parse HTTP response from host '" << GetHost() << "' port '" << GetPort() << "': " << DiagnosticInformation(ex, false);
		throw;
//.........这里部分代码省略.........

void InfluxdbWriter::Flush()
{
	String body = boost::algorithm::join(m_DataBuffer, "\n");
	m_DataBuffer.clear();

	Stream::Ptr stream;

	try {
		stream = Connect();
	} catch (const std::exception& ex) {
		Log(LogWarning, "InfluxDbWriter")
			<< "Flush failed, cannot connect to InfluxDB.";
		return;
	}

	if (!stream)
		return;

	Url::Ptr url = new Url();
	url->SetScheme(GetSslEnable() ? "https" : "http");
	url->SetHost(GetHost());
	url->SetPort(GetPort());

	std::vector<String> path;
	path.emplace_back("write");
	url->SetPath(path);

	url->AddQueryElement("db", GetDatabase());
	url->AddQueryElement("precision", "s");
	if (!GetUsername().IsEmpty())
		url->AddQueryElement("u", GetUsername());
	if (!GetPassword().IsEmpty())
		url->AddQueryElement("p", GetPassword());

	HttpRequest req(stream);
	req.RequestMethod = "POST";
	req.RequestUrl = url;

	try {
		req.WriteBody(body.CStr(), body.GetLength());
		req.Finish();
	} catch (const std::exception& ex) {
		Log(LogWarning, "InfluxdbWriter")
			<< "Cannot write to TCP socket on host '" << GetHost() << "' port '" << GetPort() << "'.";
		throw ex;
	}

	HttpResponse resp(stream, req);
	StreamReadContext context;

	try {
		while (resp.Parse(context, true) && !resp.Complete)
			; /* Do nothing */
	} catch (const std::exception& ex) {
		Log(LogWarning, "InfluxdbWriter")
			<< "Failed to parse HTTP response from host '" << GetHost() << "' port '" << GetPort() << "': " << DiagnosticInformation(ex);
		throw ex;
	}

	if (!resp.Complete) {
		Log(LogWarning, "InfluxdbWriter")
			<< "Failed to read a complete HTTP response from the InfluxDB server.";
		return;
	}

	if (resp.StatusCode != 204) {
		Log(LogWarning, "InfluxdbWriter")
			<< "Unexpected response code: " << resp.StatusCode;

		String contentType = resp.Headers->Get("content-type");
		if (contentType != "application/json") {
			Log(LogWarning, "InfluxdbWriter")
				<< "Unexpected Content-Type: " << contentType;
			return;
		}

		size_t responseSize = resp.GetBodySize();
		boost::scoped_array<char> buffer(new char[responseSize + 1]);
		resp.ReadBody(buffer.get(), responseSize);
		buffer.get()[responseSize] = '\0';

		Dictionary::Ptr jsonResponse;
		try {
			jsonResponse = JsonDecode(buffer.get());
		} catch (...) {
			Log(LogWarning, "InfluxdbWriter")
				<< "Unable to parse JSON response:\n" << buffer.get();
			return;
		}

		String error = jsonResponse->Get("error");

		Log(LogCritical, "InfluxdbWriter")
			<< "InfluxDB error message:\n" << error;

		return;
	}
}

bool ActionsHandler::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 http = boost::beast::http;

	if (url->GetPath().size() != 3)
		return false;

	if (request.method() != http::verb::post)
		return false;

	String actionName = url->GetPath()[2];

	ApiAction::Ptr action = ApiAction::GetByName(actionName);

	if (!action) {
		HttpUtility::SendJsonError(response, params, 404, "Action '" + actionName + "' does not exist.");
		return true;
	}

	QueryDescription qd;

	const std::vector<String>& types = action->GetTypes();
	std::vector<Value> objs;

	String permission = "actions/" + actionName;

	if (!types.empty()) {
		qd.Types = std::set<String>(types.begin(), types.end());
		qd.Permission = permission;

		try {
			objs = FilterUtility::GetFilterTargets(qd, params, user);
		} catch (const std::exception& ex) {
			HttpUtility::SendJsonError(response, params, 404,
				"No objects found.",
				DiagnosticInformation(ex));
			return true;
		}
	} else {
		FilterUtility::CheckPermission(user, permission);
		objs.emplace_back(nullptr);
	}

	ArrayData results;

	Log(LogNotice, "ApiActionHandler")
		<< "Running action " << actionName;

	bool verbose = false;

	if (params)
		verbose = HttpUtility::GetLastParameter(params, "verbose");

	for (const ConfigObject::Ptr& obj : objs) {
		try {
			results.emplace_back(action->Invoke(obj, params));
		} catch (const std::exception& ex) {
			Dictionary::Ptr fail = new Dictionary({
				{ "code", 500 },
				{ "status", "Action execution failed: '" + DiagnosticInformation(ex, false) + "'." }
			});

			/* Exception for actions. Normally we would handle this inside SendJsonError(). */
			if (verbose)
				fail->Set("diagnostic_information", DiagnosticInformation(ex));

			results.emplace_back(std::move(fail));
		}
	}

	int statusCode = 500;

	for (const Dictionary::Ptr& res : results) {
		if (res->Contains("code") && res->Get("code") == 200) {
			statusCode = 200;
			break;
		}
	}

	response.result(statusCode);

	Dictionary::Ptr result = new Dictionary({
		{ "results", new Array(std::move(results)) }
	});

	HttpUtility::SendJsonBody(response, params, result);

	return true;
}

void InfluxdbWriter::Flush(void)
{
	Stream::Ptr stream = Connect();

	// Unable to connect, play it safe and lose the data points
	// to avoid a memory leak
	if (!stream.get()) {
		m_DataBuffer->Clear();
		return;
	}

	Url::Ptr url = new Url();
	url->SetScheme(GetSslEnable() ? "https" : "http");
	url->SetHost(GetHost());
	url->SetPort(GetPort());

	std::vector<String> path;
	path.push_back("write");
	url->SetPath(path);

	url->AddQueryElement("db", GetDatabase());
	url->AddQueryElement("precision", "s");
	if (!GetUsername().IsEmpty())
		url->AddQueryElement("u", GetUsername());
	if (!GetPassword().IsEmpty())
		url->AddQueryElement("p", GetPassword());

	// Ensure you hold a lock against m_DataBuffer so that things
	// don't go missing after creating the body and clearing the buffer
	String body = Utility::Join(m_DataBuffer, '\n', false);
	m_DataBuffer->Clear();

	HttpRequest req(stream);
	req.RequestMethod = "POST";
	req.RequestUrl = url;

	try {
		req.WriteBody(body.CStr(), body.GetLength());
		req.Finish();
	} catch (const std::exception&) {
		Log(LogWarning, "InfluxdbWriter")
		    << "Cannot write to TCP socket on host '" << GetHost() << "' port '" << GetPort() << "'.";
		return;
	}

	HttpResponse resp(stream, req);
	StreamReadContext context;

	try {
		resp.Parse(context, true);
	} catch (const std::exception&) {
		Log(LogWarning, "InfluxdbWriter")
		    << "Cannot read from TCP socket from host '" << GetHost() << "' port '" << GetPort() << "'.";
		return;
	}

	if (resp.StatusCode != 204) {
		Log(LogWarning, "InfluxdbWriter")
		    << "Unexpected response code " << resp.StatusCode;
	}
}

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;
		}
	}
}