C++ Ptr::GetLength方法代码示例

void Notification::Validate(int types, const ValidationUtils& utils)
{
	ObjectImpl<Notification>::Validate(types, utils);

	if (!(types & FAConfig))
		return;

	Array::Ptr users = GetUsersRaw();
	Array::Ptr groups = GetUserGroupsRaw();

	if ((!users || users->GetLength() == 0) && (!groups || groups->GetLength() == 0))
		BOOST_THROW_EXCEPTION(ValidationError(this, std::vector<String>(), "Validation failed: No users/user_groups specified."));
}

Value HttpUtility::GetLastParameter(const Dictionary::Ptr& params, const String& key)
{
	Value varr = params->Get(key);

	if (!varr.IsObjectType<Array>())
		return varr;

	Array::Ptr arr = varr;

	if (arr->GetLength() == 0)
		return Empty;
	else
		return arr->Get(arr->GetLength() - 1);
}

bool HostGroup::ResolveGroupMembership(const Host::Ptr& host, bool add, int rstack) {

	if (add && rstack > 20) {
		Log(LogWarning, "HostGroup")
			<< "Too many nested groups for group '" << GetName() << "': Host '"
			<< host->GetName() << "' membership assignment failed.";

		return false;
	}

	Array::Ptr groups = GetGroups();

	if (groups && groups->GetLength() > 0) {
		ObjectLock olock(groups);

		for (const String& name : groups) {
			HostGroup::Ptr group = HostGroup::GetByName(name);

			if (group && !group->ResolveGroupMembership(host, add, rstack + 1))
				return false;
		}
	}

	if (add)
		AddMember(host);
	else
		RemoveMember(host);

	return true;
}

	static inline ExpressionResult For(ScriptFrame& frame, const String& fkvar, const String& fvvar, const Value& value, Expression *expression, const DebugInfo& debugInfo = DebugInfo())
	{
		if (value.IsObjectType<Array>()) {
			if (!fvvar.IsEmpty())
				BOOST_THROW_EXCEPTION(ScriptError("Cannot use dictionary iterator for array.", debugInfo));

			Array::Ptr arr = value;

			for (Array::SizeType i = 0; i < arr->GetLength(); i++) {
				frame.Locals->Set(fkvar, arr->Get(i));
				ExpressionResult res = expression->Evaluate(frame);
				CHECK_RESULT_LOOP(res);
			}
		} else if (value.IsObjectType<Dictionary>()) {
			if (fvvar.IsEmpty())
				BOOST_THROW_EXCEPTION(ScriptError("Cannot use array iterator for dictionary.", debugInfo));

			Dictionary::Ptr dict = value;
			std::vector<String> keys;

			{
				ObjectLock olock(dict);
				BOOST_FOREACH(const Dictionary::Pair& kv, dict) {
					keys.push_back(kv.first);
				}
			}

			BOOST_FOREACH(const String& key, keys) {
				frame.Locals->Set(fkvar, key);
				frame.Locals->Set(fvvar, dict->Get(key));
				ExpressionResult res = expression->Evaluate(frame);
				CHECK_RESULT_LOOP(res);
			}

/**
 * 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;
}

bool Value::ToBool(void) const
{
	switch (GetType()) {
		case ValueNumber:
			return static_cast<bool>(boost::get<double>(m_Value));

		case ValueBoolean:
			return boost::get<bool>(m_Value);

		case ValueString:
			return !boost::get<String>(m_Value).IsEmpty();

		case ValueObject:
			if (IsObjectType<Dictionary>()) {
				Dictionary::Ptr dictionary = *this;
				return dictionary->GetLength() > 0;
			} else if (IsObjectType<Array>()) {
				Array::Ptr array = *this;
				return array->GetLength() > 0;
			} else {
				return true;
			}

		case ValueEmpty:
			return false;

		default:
			BOOST_THROW_EXCEPTION(std::runtime_error("Invalid variant type."));
	}
}

void ConfigWriter::EmitScope(std::ostream& fp, int indentLevel, const Dictionary::Ptr& val, const Array::Ptr& imports)
{
	fp << "{";

	if (imports && imports->GetLength() > 0) {
		ObjectLock xlock(imports);
		BOOST_FOREACH(const Value& import, imports) {
			fp << "\n";
			EmitIndent(fp, indentLevel);
			fp << "import \"" << import << "\"";
		}

void Zone::ValidateEndpointsRaw(const Array::Ptr& value, const ValidationUtils& utils)
{
	ObjectImpl<Zone>::ValidateEndpointsRaw(value, utils);

	if (value && value->GetLength() > 2) {
		Log(LogWarning, "Zone")
		    << "The Zone object '" << GetName() << "' has more than two endpoints."
		    << " Due to a known issue this type of configuration is strongly"
		    << " discouraged and may cause Icinga to use excessive amounts of CPU time.";
	}
}

void ApiClient::ExecuteScriptHttpCompletionCallback(HttpRequest& request,
	HttpResponse& response, const ExecuteScriptCompletionCallback& callback)
{
	Dictionary::Ptr result;

	String body;
	char buffer[1024];
	size_t count;

	while ((count = response.ReadBody(buffer, sizeof(buffer))) > 0)
		body += String(buffer, buffer + count);

	try {
		if (response.StatusCode < 200 || response.StatusCode > 299) {
			std::string message = "HTTP request failed; Code: " + Convert::ToString(response.StatusCode) + "; Body: " + body;

			BOOST_THROW_EXCEPTION(ScriptError(message));
		}

		result = JsonDecode(body);

		Array::Ptr results = result->Get("results");
		Value result;
		String errorMessage = "Unexpected result from API.";

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

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

		callback(boost::exception_ptr(), result);
	} catch (const std::exception&) {
		callback(boost::current_exception(), Empty);
	}
}

static Value ArrayReduce(const Function::Ptr& function)
{
	ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
	Array::Ptr self = static_cast<Array::Ptr>(vframe->Self);

	if (vframe->Sandboxed && !function->IsSideEffectFree())
		BOOST_THROW_EXCEPTION(ScriptError("Reduce function must be side-effect free."));

	if (self->GetLength() == 0)
		return Empty;

	Value result = self->Get(0);

	ObjectLock olock(self);
	for (size_t i = 1; i < self->GetLength(); i++) {
		std::vector<Value> args;
		args.push_back(result);
		args.push_back(self->Get(i));
		result = function->Invoke(args);
	}

	return result;
}

double ScriptUtils::Len(const Value& value)
{
	if (value.IsObjectType<Dictionary>()) {
		Dictionary::Ptr dict = value;
		return dict->GetLength();
	} else if (value.IsObjectType<Array>()) {
		Array::Ptr array = value;
		return array->GetLength();
	} else if (value.IsString()) {
		return Convert::ToString(value).GetLength();
	} else {
		return 0;
	}
}

/**
 * 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;
}

Array::Ptr LegacyTimePeriod::ScriptFunc(const TimePeriod::Ptr& tp, double begin, double end)
{
	Array::Ptr segments = new Array();

	Dictionary::Ptr ranges = tp->GetRanges();

	if (ranges) {
		for (int i = 0; i <= (end - begin) / (24 * 60 * 60); i++) {
			time_t refts = begin + i * 24 * 60 * 60;
			tm reference = Utility::LocalTime(refts);

#ifdef I2_DEBUG
			Log(LogDebug, "LegacyTimePeriod")
			    << "Checking reference time " << refts;
#endif /* I2_DEBUG */

			ObjectLock olock(ranges);
			for (const Dictionary::Pair& kv : ranges) {
				if (!IsInDayDefinition(kv.first, &reference)) {
#ifdef I2_DEBUG
					Log(LogDebug, "LegacyTimePeriod")
					    << "Not in day definition '" << kv.first << "'.";
#endif /* I2_DEBUG */
					continue;
				}

#ifdef I2_DEBUG
				Log(LogDebug, "LegacyTimePeriod")
				    << "In day definition '" << kv.first << "'.";
#endif /* I2_DEBUG */

				ProcessTimeRanges(kv.second, &reference, segments);
			}
		}
	}

	Log(LogDebug, "LegacyTimePeriod")
	    << "Legacy timeperiod update returned " << segments->GetLength() << " segments.";

	return segments;
}

void ApiClient::AutocompleteScriptHttpCompletionCallback(HttpRequest& request,
	HttpResponse& response, const AutocompleteScriptCompletionCallback& callback)
{
	Dictionary::Ptr result;

	String body;
	char buffer[1024];
	size_t count;

	while ((count = response.ReadBody(buffer, sizeof(buffer))) > 0)
		body += String(buffer, buffer + count);

	try {
		if (response.StatusCode < 200 || response.StatusCode > 299) {
			std::string message = "HTTP request failed; Code: " + Convert::ToString(response.StatusCode) + "; Body: " + body;

			BOOST_THROW_EXCEPTION(ScriptError(message));
		}

		result = JsonDecode(body);

		Array::Ptr results = result->Get("results");
		Array::Ptr suggestions;
		String errorMessage = "Unexpected result from API.";

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

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

		callback(boost::exception_ptr(), suggestions);
	} catch (const std::exception&) {
		callback(boost::current_exception(), nullptr);
	}
}

bool Zone::IsSingleInstance() const
{
	Array::Ptr endpoints = GetEndpointsRaw();
	return !endpoints || endpoints->GetLength() < 2;
}