TypeScript node-opcua-client.ClientSubscription类代码示例

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本文整理汇总了TypeScript中node-opcua-client.ClientSubscription类的典型用法代码示例。如果您正苦于以下问题：TypeScript ClientSubscription类的具体用法？TypeScript ClientSubscription怎么用？TypeScript ClientSubscription使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了ClientSubscription类的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的TypeScript代码示例。

示例1: callback

 (err: Error | null, subscription?: ClientSubscription) => {
     if (err) {
         return callback(err);
     }
     this.subscription = subscription!;
     this.subscription.on("terminated", () => {
         this.subscription = undefined;
     });
     callback();
 });

开发者ID:node-opcua，项目名称:node-opcua，代码行数:10，代码来源:proxy_manager.ts

示例2: test2

async function test2() {

    console.log("----------------------------------------------------");

    try {

        await client.connect("opc.tcp://opcuademo.sterfive.com:26543");

        const session: ClientSession = await client.createSession({
            type: UserTokenType.UserName,

            password: "password1",
            userName: "user1"
        });

        const subscription = ClientSubscription.create(session, {
            maxNotificationsPerPublish: 1000,
            publishingEnabled: true,
            requestedLifetimeCount: 100,
            requestedMaxKeepAliveCount: 10,
            requestedPublishingInterval: 500
        });

        subscription.on("error", (err) => {
            console.log(" Error :", err);
        });
        subscription.on("keepalive", () => {
            console.log(" Keep Alive");
        });

        const parameters1: MonitoringParametersOptions = {
            discardOldest: true,
            queueSize: 100,
            samplingInterval: 250
        };
        const itemToMonitor1: ReadValueIdLike = {
            attributeId: AttributeIds.Value,
            nodeId: "ns=1;s=PumpSpeed"
        };

        const item1 = ClientMonitoredItem.create(subscription, itemToMonitor1, parameters1, TimestampsToReturn.Both);
        item1
          .on("changed", (dataValue: DataValue) => {
              console.log(" Value1 has changed : ", dataValue.toString());
          })
          .on("terminated", () => {
              console.log("item1 has been terminated");
          });

        const itemToMonitor2: ReadValueIdLike = {
            attributeId: AttributeIds.Value,
            nodeId: "ns=1;s=FanSpeed"
        };
        const item2 = ClientMonitoredItem.create(subscription, itemToMonitor2, parameters1, TimestampsToReturn.Both);
        item2
          .on("changed", (dataValue: DataValue) => {
              console.log(" Value2 has changed : ", dataValue.toString());
          })
          .on("terminated", () => {
              console.log("item2 has been terminated");
          });

        await timeout(10000);

        await subscription.terminate();

        await client.disconnect();

        console.log(" Done!");

    } catch (e) {
        // Deal with the fact the chain failed
        console.log(chalk.red("Error !"), e);
        process.exit(-1);
    }

}

开发者ID:node-opcua，项目名称:node-opcua，代码行数:77，代码来源:sample2Subscriptions.ts

示例3: stop

    public stop(...args: any[]): any {
        const callback = args[0] as (err?: Error) => void;

        if (this.subscription) {
            this.subscription.terminate(() => {
                this.subscription = undefined;
                callback();
            });

        } else {
            callback(new Error("UAProxyManager already stopped ?"));
        }
    }

开发者ID:node-opcua，项目名称:node-opcua，代码行数:13，代码来源:proxy_manager.ts

示例4: _monitor_execution_flag

    public _monitor_execution_flag(
        proxyObject: any,
        callback: (err?: Error) => void
    ) {

        // note : proxyObject must wrap a method
        assert(_.isFunction(callback));
        assert(proxyObject.nodeId instanceof NodeId);

        if (!this.subscription) {
            // some server do not provide subscription support, do not treat this as an error.
            return callback(); // new Error("No subscription"));
        }

        const itemToMonitor = { // ReadValueId
            attributeId: AttributeIds.Executable,
            nodeId: proxyObject.nodeId,
        };

        const monitoringParameters = { // MonitoringParameters
            discardOldest: true,
            queueSize: 10,
            samplingInterval: 0, /* event-based */
        };
        const requestedParameters = TimestampsToReturn.Neither;

        this.subscription.monitor(
            itemToMonitor, monitoringParameters, requestedParameters,
            (err: Error | null, monitoredItem?: ClientMonitoredItemBase) => {

                Object.defineProperty(
                    proxyObject,
                    "__monitoredItem_execution_flag",
                    {value: monitoredItem, enumerable: false});

                proxyObject.__monitoredItem_execution_flag.on("changed", (dataValue: DataValue) => {
                    proxyObject.executableFlag = dataValue.value.value;
                });

                callback(err!);
            });
    }

开发者ID:node-opcua，项目名称:node-opcua，代码行数:42，代码来源:proxy_manager.ts

示例5: _monitor_value

    public _monitor_value(
        proxyObject: any,
        callback: ErrorCallback
    ) {

        if (!this.subscription) {
            // some server do not provide subscription support, do not treat this as an error.
            return callback(); // new Error("No subscription"));
        }

        const itemToMonitor = { // ReadValueId
            attributeId: AttributeIds.Value,
            nodeId: proxyObject.nodeId,
        };
        const monitoringParameters = { // MonitoringParameters
            discardOldest: true,
            queueSize: 10,
            samplingInterval: 0, /* event-based */
        };
        const requestedParameters = TimestampsToReturn.Both;

        this.subscription.monitor(
            itemToMonitor, monitoringParameters, requestedParameters,

            (err: Error | null, monitoredItem?: ClientMonitoredItemBase) => {

                Object.defineProperty(proxyObject, "__monitoredItem", {value: monitoredItem, enumerable: false});

                proxyObject.__monitoredItem.on("changed", (dataValue: DataValue) => {
                    proxyObject.dataValue = dataValue;
                    proxyObject.emit("value_changed", dataValue);
                });
                callback(err!);
            });

    }

开发者ID:node-opcua，项目名称:node-opcua，代码行数:36，代码来源:proxy_manager.ts

注：本文中的node-opcua-client.ClientSubscription类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。