aws-crt
Version:
NodeJS/browser bindings to the aws-c-* libraries
475 lines • 25.2 kB
JavaScript
;
/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
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Object.defineProperty(exports, "__esModule", { value: true });
exports.ProtocolClientAdapter = exports.ConnectionState = void 0;
/**
*
* @packageDocumentation
* @module mqtt_request_response
*
*/
var error_1 = require("../error");
var mqtt311 = __importStar(require("../mqtt"));
var mqtt5 = __importStar(require("../mqtt5"));
var event_1 = require("../../common/event");
var MS_PER_SECOND = 1000;
var ConnectionState;
(function (ConnectionState) {
ConnectionState[ConnectionState["Connected"] = 0] = "Connected";
ConnectionState[ConnectionState["Disconnected"] = 1] = "Disconnected";
})(ConnectionState = exports.ConnectionState || (exports.ConnectionState = {}));
/*
* Provides a client-agnostic wrapper around the MQTT functionality needed by the browser request-response client.
*
* This is a direct port of aws-c-mqtt's aws_mqtt_protocol_adapter implementation.
*
* We use events and not promises for all of these operations because it's critical that the request-response
* client never awaits on async promises directly. All promise waits are done on scheduled tasks instead.
*/
var ProtocolClientAdapter = /** @class */ (function (_super) {
__extends(ProtocolClientAdapter, _super);
function ProtocolClientAdapter() {
var _this = _super.call(this) || this;
_this.connectionSuccessListener5 = function (event) {
_this.connectionState = ConnectionState.Connected;
setImmediate(function () {
_this.emit(ProtocolClientAdapter.CONNECTION_STATUS, {
status: ConnectionState.Connected,
joinedSession: event.connack.sessionPresent,
});
});
};
_this.disconnectionListener5 = function (event) {
_this.connectionState = ConnectionState.Disconnected;
setImmediate(function () {
_this.emit(ProtocolClientAdapter.CONNECTION_STATUS, {
status: ConnectionState.Disconnected,
});
});
};
_this.incomingPublishListener5 = function (event) {
setImmediate(function () {
_this.emit(ProtocolClientAdapter.INCOMING_PUBLISH, {
topic: event.message.topicName,
payload: event.message.payload
});
});
};
_this.connectionSuccessListener311 = function (event) {
_this.connectionState = ConnectionState.Connected;
setImmediate(function () {
_this.emit(ProtocolClientAdapter.CONNECTION_STATUS, {
status: ConnectionState.Connected,
joinedSession: event.session_present,
});
});
};
_this.disconnectionListener311 = function () {
_this.connectionState = ConnectionState.Disconnected;
setImmediate(function () {
_this.emit(ProtocolClientAdapter.CONNECTION_STATUS, {
status: ConnectionState.Disconnected,
});
});
};
_this.incomingPublishListener311 = function (topic, payload, dup, qos, retain) {
setImmediate(function () {
_this.emit(ProtocolClientAdapter.INCOMING_PUBLISH, {
topic: topic,
payload: payload
});
});
};
_this.connectionState = ConnectionState.Disconnected;
_this.closed = false;
return _this;
}
ProtocolClientAdapter.newFrom5 = function (client) {
var adapter = new ProtocolClientAdapter();
adapter.client5 = client;
client.addListener(mqtt5.Mqtt5Client.CONNECTION_SUCCESS, adapter.connectionSuccessListener5);
client.addListener(mqtt5.Mqtt5Client.DISCONNECTION, adapter.disconnectionListener5);
client.addListener(mqtt5.Mqtt5Client.MESSAGE_RECEIVED, adapter.incomingPublishListener5);
adapter.connectionState = client.isConnected() ? ConnectionState.Connected : ConnectionState.Disconnected;
return adapter;
};
ProtocolClientAdapter.newFrom311 = function (client) {
var adapter = new ProtocolClientAdapter();
adapter.client311 = client;
client.addListener(mqtt311.MqttClientConnection.CONNECTION_SUCCESS, adapter.connectionSuccessListener311);
client.addListener(mqtt311.MqttClientConnection.DISCONNECT, adapter.disconnectionListener311);
client.addListener(mqtt311.MqttClientConnection.MESSAGE, adapter.incomingPublishListener311);
adapter.connectionState = client.is_connected() ? ConnectionState.Connected : ConnectionState.Disconnected;
return adapter;
};
ProtocolClientAdapter.prototype.close = function () {
if (this.closed) {
return;
}
this.closed = true;
if (this.client5) {
this.client5.removeListener(mqtt5.Mqtt5Client.CONNECTION_SUCCESS, this.connectionSuccessListener5);
this.client5.removeListener(mqtt5.Mqtt5Client.DISCONNECTION, this.disconnectionListener5);
this.client5.removeListener(mqtt5.Mqtt5Client.MESSAGE_RECEIVED, this.incomingPublishListener5);
this.client5 = undefined;
}
if (this.client311) {
this.client311.removeListener(mqtt311.MqttClientConnection.CONNECTION_SUCCESS, this.connectionSuccessListener311);
this.client311.removeListener(mqtt311.MqttClientConnection.DISCONNECT, this.disconnectionListener311);
this.client311.removeListener(mqtt311.MqttClientConnection.MESSAGE, this.incomingPublishListener311);
this.client311 = undefined;
}
};
ProtocolClientAdapter.prototype.publish = function (publishOptions) {
var _this = this;
if (this.closed) {
throw new error_1.CrtError(ProtocolClientAdapter.ADAPTER_CLOSED);
}
var publishResult = undefined;
setImmediate(function () { return __awaiter(_this, void 0, void 0, function () {
var publishPromise, packet, timeoutPromise;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (this.client5) {
packet = {
topicName: publishOptions.topic,
qos: mqtt5.QoS.AtLeastOnce,
payload: publishOptions.payload,
};
publishPromise = this.client5.publish(packet).then(function (result) {
if (!publishResult) {
publishResult = {
completionData: publishOptions.completionData
};
if (result && !mqtt5.isSuccessfulPubackReasonCode(result.reasonCode)) {
publishResult.err = new error_1.CrtError(ProtocolClientAdapter.FAILING_PUBACK_REASON_CODE);
}
}
}, function (err) {
if (!publishResult) {
publishResult = {
completionData: publishOptions.completionData,
err: err
};
}
});
}
else if (this.client311) {
publishPromise = this.client311.publish(publishOptions.topic, publishOptions.payload, mqtt311.QoS.AtLeastOnce).then(function (response) {
if (!publishResult) {
publishResult = {
completionData: publishOptions.completionData
};
}
}, function (err) {
if (!publishResult) {
publishResult = {
completionData: publishOptions.completionData,
err: err
};
}
});
}
else {
throw new error_1.CrtError(ProtocolClientAdapter.ILLEGAL_ADAPTER_STATE);
}
timeoutPromise = new Promise(function (resolve) { return setTimeout(function () {
if (!publishResult) {
publishResult = {
completionData: publishOptions.completionData,
err: new error_1.CrtError(ProtocolClientAdapter.OPERATION_TIMEOUT)
};
}
}, publishOptions.timeoutInSeconds * MS_PER_SECOND); });
return [4 /*yield*/, Promise.race([publishPromise, timeoutPromise])];
case 1:
_a.sent();
this.emit(ProtocolClientAdapter.PUBLISH_COMPLETION, publishResult);
return [2 /*return*/];
}
});
}); });
};
ProtocolClientAdapter.prototype.subscribe = function (subscribeOptions) {
var _this = this;
if (this.closed) {
throw new error_1.CrtError(ProtocolClientAdapter.ADAPTER_CLOSED);
}
var subscribeResult = undefined;
setImmediate(function () { return __awaiter(_this, void 0, void 0, function () {
var subscribePromise, packet, timeoutPromise;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (this.client5) {
packet = {
subscriptions: [
{
topicFilter: subscribeOptions.topicFilter,
qos: mqtt5.QoS.AtLeastOnce,
}
]
};
subscribePromise = this.client5.subscribe(packet).then(function (suback) {
if (!subscribeResult) {
subscribeResult = {
topicFilter: subscribeOptions.topicFilter,
};
var reasonCode = suback.reasonCodes[0];
if (!mqtt5.isSuccessfulSubackReasonCode(reasonCode)) {
subscribeResult.err = new error_1.CrtError(ProtocolClientAdapter.FAILING_SUBACK_REASON_CODE);
subscribeResult.retryable = ProtocolClientAdapter.isSubackReasonCodeRetryable(reasonCode);
}
}
}, function (err) {
if (!subscribeResult) {
subscribeResult = {
topicFilter: subscribeOptions.topicFilter,
err: err,
retryable: false
};
}
});
}
else if (this.client311) {
subscribePromise = this.client311.subscribe(subscribeOptions.topicFilter, mqtt311.QoS.AtLeastOnce).then(function (response) {
if (!subscribeResult) {
subscribeResult = {
topicFilter: subscribeOptions.topicFilter
};
if (response.qos >= 128) {
subscribeResult.err = new error_1.CrtError(ProtocolClientAdapter.FAILING_SUBACK_REASON_CODE);
subscribeResult.retryable = true;
}
else if (response.error_code) {
subscribeResult.err = new error_1.CrtError("Internal Error");
subscribeResult.retryable = true;
}
}
}, function (err) {
if (!subscribeResult) {
subscribeResult = {
topicFilter: subscribeOptions.topicFilter,
err: err,
retryable: false,
};
}
});
}
else {
throw new error_1.CrtError(ProtocolClientAdapter.ILLEGAL_ADAPTER_STATE);
}
timeoutPromise = new Promise(function (resolve) { return setTimeout(function () {
if (!subscribeResult) {
subscribeResult = {
topicFilter: subscribeOptions.topicFilter,
err: new error_1.CrtError(ProtocolClientAdapter.OPERATION_TIMEOUT),
retryable: true,
};
}
}, subscribeOptions.timeoutInSeconds * MS_PER_SECOND); });
return [4 /*yield*/, Promise.race([subscribePromise, timeoutPromise])];
case 1:
_a.sent();
this.emit(ProtocolClientAdapter.SUBSCRIBE_COMPLETION, subscribeResult);
return [2 /*return*/];
}
});
}); });
};
ProtocolClientAdapter.prototype.unsubscribe = function (unsubscribeOptions) {
var _this = this;
if (this.closed) {
throw new error_1.CrtError(ProtocolClientAdapter.ADAPTER_CLOSED);
}
var unsubscribeResult = undefined;
setImmediate(function () { return __awaiter(_this, void 0, void 0, function () {
var unsubscribePromise, packet, timeoutPromise;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (this.client5) {
packet = {
topicFilters: [unsubscribeOptions.topicFilter]
};
unsubscribePromise = this.client5.unsubscribe(packet).then(function (unsuback) {
if (!unsubscribeResult) {
unsubscribeResult = {
topicFilter: unsubscribeOptions.topicFilter
};
var reasonCode = unsuback.reasonCodes[0];
if (!mqtt5.isSuccessfulUnsubackReasonCode(unsuback.reasonCodes[0])) {
unsubscribeResult.err = new error_1.CrtError(ProtocolClientAdapter.FAILING_UNSUBACK_REASON_CODE);
unsubscribeResult.retryable = ProtocolClientAdapter.isUnsubackReasonCodeRetryable(reasonCode);
}
}
}, function (err) {
if (!unsubscribeResult) {
unsubscribeResult = {
topicFilter: unsubscribeOptions.topicFilter,
err: err,
retryable: false,
};
}
});
}
else if (this.client311) {
unsubscribePromise = this.client311.unsubscribe(unsubscribeOptions.topicFilter).then(function (_) {
if (!unsubscribeResult) {
unsubscribeResult = {
topicFilter: unsubscribeOptions.topicFilter
};
}
}, function (err) {
if (!unsubscribeResult) {
unsubscribeResult = {
topicFilter: unsubscribeOptions.topicFilter,
err: err,
retryable: false,
};
}
});
}
else {
throw new error_1.CrtError(ProtocolClientAdapter.ILLEGAL_ADAPTER_STATE);
}
timeoutPromise = new Promise(function (resolve) { return setTimeout(function () {
if (!unsubscribeResult) {
unsubscribeResult = {
topicFilter: unsubscribeOptions.topicFilter,
err: new error_1.CrtError(ProtocolClientAdapter.OPERATION_TIMEOUT),
retryable: true,
};
}
}, unsubscribeOptions.timeoutInSeconds * MS_PER_SECOND); });
return [4 /*yield*/, Promise.race([unsubscribePromise, timeoutPromise])];
case 1:
_a.sent();
this.emit(ProtocolClientAdapter.UNSUBSCRIBE_COMPLETION, unsubscribeResult);
return [2 /*return*/];
}
});
}); });
};
ProtocolClientAdapter.prototype.getConnectionState = function () {
if (this.closed) {
throw new error_1.CrtError(ProtocolClientAdapter.ADAPTER_CLOSED);
}
return this.connectionState;
};
ProtocolClientAdapter.prototype.on = function (event, listener) {
_super.prototype.on.call(this, event, listener);
return this;
};
ProtocolClientAdapter.isUnsubackReasonCodeRetryable = function (reasonCode) {
switch (reasonCode) {
case mqtt5.UnsubackReasonCode.ImplementationSpecificError:
case mqtt5.UnsubackReasonCode.PacketIdentifierInUse:
return true;
default:
return false;
}
};
ProtocolClientAdapter.isSubackReasonCodeRetryable = function (reasonCode) {
switch (reasonCode) {
case mqtt5.SubackReasonCode.PacketIdentifierInUse:
case mqtt5.SubackReasonCode.ImplementationSpecificError:
case mqtt5.SubackReasonCode.QuotaExceeded:
return true;
default:
return false;
}
};
ProtocolClientAdapter.PUBLISH_COMPLETION = 'publishCompletion';
ProtocolClientAdapter.SUBSCRIBE_COMPLETION = 'subscribeCompletion';
ProtocolClientAdapter.UNSUBSCRIBE_COMPLETION = 'unsubscribeCompletion';
ProtocolClientAdapter.CONNECTION_STATUS = 'connectionStatus';
ProtocolClientAdapter.INCOMING_PUBLISH = 'incomingPublish';
ProtocolClientAdapter.FAILING_PUBACK_REASON_CODE = "Failing Puback Reason Code";
ProtocolClientAdapter.FAILING_SUBACK_REASON_CODE = "Failing Suback Reason Code";
ProtocolClientAdapter.FAILING_UNSUBACK_REASON_CODE = "Failing Unsuback Reason Code";
ProtocolClientAdapter.ILLEGAL_ADAPTER_STATE = "Illegal Adapter State";
ProtocolClientAdapter.OPERATION_TIMEOUT = "Operation Timeout";
ProtocolClientAdapter.ADAPTER_CLOSED = "Protocol Client Adapter Closed";
return ProtocolClientAdapter;
}(event_1.BufferedEventEmitter));
exports.ProtocolClientAdapter = ProtocolClientAdapter;
//# sourceMappingURL=protocol_adapter.js.map