Rule

• Implements: IRule

This class encapsulates and extends the ROS resource type ALIYUN::IOT::Rule.

Initializers

import com.aliyun.ros.cdk.iot.Rule;
Rule.Builder.create(Construct scope, java.lang.String id, java.lang.Boolean enableResourcePropertyConstraint)
    .name(java.lang.String)
    .name(IResolvable)
//  .dataType(java.lang.String)
//  .dataType(IResolvable)
//  .iotInstanceId(java.lang.String)
//  .iotInstanceId(IResolvable)
//  .productKey(java.lang.String)
//  .productKey(IResolvable)
//  .resourceGroupId(java.lang.String)
//  .resourceGroupId(IResolvable)
//  .ruleAction(IResolvable)
//  .ruleAction(java.util.List<IResolvable)
//  .ruleAction(RuleActionProperty>)
//  .ruleDesc(java.lang.String)
//  .ruleDesc(IResolvable)
//  .select(java.lang.String)
//  .select(IResolvable)
//  .shortTopic(java.lang.String)
//  .shortTopic(IResolvable)
//  .startRule(java.lang.Boolean)
//  .startRule(IResolvable)
//  .topicType(java.lang.Number)
//  .topicType(IResolvable)
//  .where(java.lang.String)
//  .where(IResolvable)
    .build();

scope^Required

• Type: com.aliyun.ros.cdk.core.Construct

id^Required

• Type: java.lang.String

enableResourcePropertyConstraint^Optional

• Type: java.lang.Boolean

name^Required

• Type: java.lang.String OR com.aliyun.ros.cdk.core.IResolvable

Property name: The name of the data forwarding rule.

The rule name must be 1 to 30 characters in length, and can contain letters, digits, underscores (_), and hyphens (-).

dataType^Optional

• Type: java.lang.String OR com.aliyun.ros.cdk.core.IResolvable

Property dataType: The format of the data to be processed by the rule.

You must specify the format of device data to be processed for this parameter. Valid values: JSON: JSON data BINARY: binary data Note If you specifyBINARY, you cannot set the TopicType parameter to 0 and forward data to Table Store, Time Series Database (TSDB), or ApsaradDB for RDS. Default value: JSON.

iotInstanceId^Optional

• Type: java.lang.String OR com.aliyun.ros.cdk.core.IResolvable

Property iotInstanceId: The ID of the instance.

This parameter is not required for public instances. However, the parameter is required for the instances that you have purchased.

productKey^Optional

• Type: java.lang.String OR com.aliyun.ros.cdk.core.IResolvable

Property productKey: The ProductKey of the product to which the rule applies.

resourceGroupId^Optional

• Type: java.lang.String OR com.aliyun.ros.cdk.core.IResolvable

Property resourceGroupId: The ID of the resource group to which the rule is assigned.

You can view the resource group information in the Resource Management console.

You can specify a value for this parameter only if you have activated Resource Management. If you do not specify this parameter, the rule is assigned to the default resource group.

ruleAction^Optional

• Type: com.aliyun.ros.cdk.core.IResolvable OR java.util.ListRuleActionProperty>

Property ruleAction:.

ruleDesc^Optional

• Type: java.lang.String OR com.aliyun.ros.cdk.core.IResolvable

Property ruleDesc: The description of the rule.

The description can be up to 100 characters in length. Each Chinese symbol occupies 1 characters.

select^Optional

• Type: java.lang.String OR com.aliyun.ros.cdk.core.IResolvable

Property select: The SQL SELECT statement that you want to execute.

For more information, seeSQL expressions. Note Specify the fields that follow the Select keyword for this parameter. For example, if the Select statement is Select a,b,c, specify a,b,c for this parameter.

shortTopic^Optional

• Type: java.lang.String OR com.aliyun.ros.cdk.core.IResolvable

Property shortTopic: The topic to which this rule is applied.

Syntax: ${deviceName}/topicShortName. ${deviceName}specifies the name of the device, and topicShortNamespecifies the custom name of the topic. Basic communication topics or Thing Specification Language (TSL)-based communication topics. Syntax: ${deviceName}/topicShortName. You can replace ${deviceName} with the + wildcard. The wildcard indicates that the topic applies to all devices under the product. Valid values of topicShortName: /thing/event/property/post: submits the property data of a device. /thing/event/${tsl.event.identifier}/post: submits the event data of a device.${tsl.event.identifier} specifies the identifier of an event in the TSL. /thing/lifecycle: submits device lifecycle changes. /thing/downlink/reply/message: sends a response to a request from IoT Platform. /thing/list/found: submits the data when a gateway detects a new sub-device. /thing/topo/lifecycle: submits device topology changes. /thing/event/property/history/post: submits historical property data of a device. /thing/event/${tsl.event.identifier}/post: submits the historical event data of a device.${tsl.event.identifier}specifies the identifier of an event in the TSL. /ota/upgrade: submits OTA update status. /ota/version/post: submits OTA module versions. /thing/deviceinfo/update: submits device tag changes. /edge/driver/${driver_id}/point_post: submits pass-through data from Link IoT Edge.${driver_id} specifies the ID of the driver that a device uses to access Link IoT Edge. ${packageId}/${jobId}/ota/job/status: submits the status of OTA update batches. This topic is a basic communication topic. ${packageId}specifies the ID of the firmware. ${jobId}specifies the ID of the update batch. Custom topics. Example:${deviceName}/user/get. You can call theQueryProductTopicoperation to view all custom topics of the product. When you specify a custom topic, you can use the + and # wildcards. You can replace ${deviceName} with the+ wildcard. The wildcard indicates that the topic applies to all devices under the product. You can replace the fields that follow ${deviceName} with /user/#. The # wildcard indicates that the topic applies whatever values are specified for the fields that follow/user. For more information about how to use wildcards, see Wildcards in topics. Topic that is used to submit device status changes: ${deviceName}. You can use the+wildcard. In this case, the status changes of all devices under the product are submitted.

startRule^Optional

• Type: java.lang.Boolean OR com.aliyun.ros.cdk.core.IResolvable

Property startRule: Start the rule.

The rule at least contains one rule action with normal data forward.

topicType^Optional

• Type: java.lang.Number OR com.aliyun.ros.cdk.core.IResolvable

Property topicType: 0: The topic is a basic communication topic or TSL-based communication topic.

1: The topic is a custom topic. 2: The topic is used to submit device status changes. Syntax: /as/mqtt/status/${productKey}/${deviceName}.

where^Optional

• Type: java.lang.String OR com.aliyun.ros.cdk.core.IResolvable

Property where: The condition that is used to trigger the rule.

For more information, seeSQL expressions. Note Specify the fields that follow theWherekeyword for this parameter. For example, if the Where statement is Where a>10, specify a>10 for this parameter.

Methods

toString

public java.lang.String toString()

Returns a string representation of this construct.

synthesize

public void synthesize(ISynthesisSession session)

Allows this construct to emit artifacts into the cloud assembly during synthesis.

This method is usually implemented by framework-level constructs such as Stack and Asset as they participate in synthesizing the cloud assembly.

session^Required

• Type: com.aliyun.ros.cdk.core.ISynthesisSession

The synthesis session.

addCondition

public void addCondition(RosCondition condition)

condition^Required

• Type: com.aliyun.ros.cdk.core.RosCondition

addCount

public void addCount(java.lang.Number OR IResolvable count)

count^Required

• Type: java.lang.Number OR com.aliyun.ros.cdk.core.IResolvable

addDependency

public void addDependency(Resource resource)

resource^Required

• Type: com.aliyun.ros.cdk.core.Resource

addResourceDesc

public void addResourceDesc(java.lang.String desc)

desc^Required

• Type: java.lang.String

applyRemovalPolicy

public void applyRemovalPolicy(RemovalPolicy policy)

policy^Required

• Type: com.aliyun.ros.cdk.core.RemovalPolicy

fetchCondition

public RosCondition fetchCondition()

fetchDependency

public java.util.List<java.lang.String> fetchDependency()

fetchResourceDesc

public java.lang.String fetchResourceDesc()

getAtt

public IResolvable getAtt(java.lang.String name)

name^Required

• Type: java.lang.String

setMetadata

public void setMetadata(java.lang.String key, java.lang.Object value)

key^Required

• Type: java.lang.String

value^Required

• Type: java.lang.Object

Static Functions

isConstruct

import com.aliyun.ros.cdk.iot.Rule;
Rule.isConstruct(java.lang.Object x)

Return whether the given object is a Construct.

x^Required

• Type: java.lang.Object

Properties

node^Required

public ConstructNode getNode();

• Type: com.aliyun.ros.cdk.core.ConstructNode

The construct tree node associated with this construct.

env^Required

public IResourceEnvironment getEnv();

• Type: com.aliyun.ros.cdk.core.IResourceEnvironment

The environment this resource belongs to.

For resources that are created and managed by the CDK (generally, those created by creating new class instances like Role, Bucket, etc.), this is always the same as the environment of the stack they belong to; however, for imported resources (those obtained from static methods like fromRoleArn, fromBucketName, etc.), that might be different than the stack they were imported into.

ref^Required

public java.lang.String getRef();

• Type: java.lang.String

stack^Required

public Stack getStack();

• Type: com.aliyun.ros.cdk.core.Stack

The stack in which this resource is defined.

resource^Optional

public RosResource getResource();

• Type: com.aliyun.ros.cdk.core.RosResource

attrActionId^Required

public java.lang.Object getAttrActionId();

• Type: java.lang.String OR com.aliyun.ros.cdk.core.IResolvable

Attribute ActionId: The ID of the rule action.

attrRuleId^Required

public java.lang.Object getAttrRuleId();

• Type: java.lang.String OR com.aliyun.ros.cdk.core.IResolvable

Attribute RuleId: The ID of the rule.

props^Required

public RuleProps getProps();

• Type: RuleProps