Huawei Cloud Simple Message Notification (SMN)

Since Camel 3.8

Only producer is supported

Huawei Cloud Simple Message Notification (SMN) component allows you to integrate with SMN provided by Huawei Cloud.

Maven users will need to add the following dependency to their pom.xml for this component:

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-huaweicloud-smn</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>

URI format

To send a notification.

hwcloud-smn:service[?options]

Options

The Huawei Cloud Simple Message Notification (SMN) component supports 2 options, which are listed below.

Name	Description	Default	Type
lazyStartProducer (producer)	Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.	false	boolean
autowiredEnabled (advanced)	Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.	true	boolean

Name

Description

Default

Type

lazyStartProducer (producer)

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

boolean

autowiredEnabled (advanced)

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

boolean

The Huawei Cloud Simple Message Notification (SMN) endpoint is configured using URI syntax:

hwcloud-smn:smnService

with the following path and query parameters:

Path Parameters (1 parameters):

Name	Description	Default	Type
smnService	Required Name of SMN service to invoke		String

Name

Description

Default

Type

smnService

Required Name of SMN service to invoke

String

Query Parameters (14 parameters):

Name	Description	Default	Type
authKey (producer)	Required Authentication key for the cloud user		String
endpoint (producer)	Fully qualified smn service url. Carries higher precedence than region parameter based client initialization		String
ignoreSslVerification (producer)	Ignore SSL verification	false	boolean
lazyStartProducer (producer)	Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.	false	boolean
messageTtl (producer)	TTL for published message	3600	int
operation (producer)	Required Name of operation to perform		String
projectId (producer)	Required Cloud project ID		String
proxyHost (producer)	Proxy server ip/hostname		String
proxyPassword (producer)	Proxy authentication password		String
proxyPort (producer)	Proxy server port		int
proxyUser (producer)	Proxy authentication user		String
region (producer)	Required SMN service region. This is lower precedence than endpoint based configuration		String
secretKey (producer)	Required Secret key for the cloud user		String
serviceKeys (producer)	Configuration object for cloud service authentication		ServiceKeys

Name

Description

Default

Type

authKey (producer)

Required Authentication key for the cloud user

String

endpoint (producer)

Fully qualified smn service url. Carries higher precedence than region parameter based client initialization

String

ignoreSslVerification (producer)

Ignore SSL verification

false

boolean

lazyStartProducer (producer)

false

boolean

messageTtl (producer)

TTL for published message

3600

int

operation (producer)

Required Name of operation to perform

String

projectId (producer)

Required Cloud project ID

String

proxyHost (producer)

Proxy server ip/hostname

String

proxyPassword (producer)

Proxy authentication password

String

proxyPort (producer)

Proxy server port

int

proxyUser (producer)

Proxy authentication user

String

region (producer)

Required SMN service region. This is lower precedence than endpoint based configuration

String

secretKey (producer)

Required Secret key for the cloud user

String

serviceKeys (producer)

Configuration object for cloud service authentication

ServiceKeys

Usage

Message properties evaluated by the SMN producer

Header Type Description

Header	Type	Description
`CamelHwCloudSmnSubject`	`String`	Subject tag for the outgoing notification
`CamelHwCloudSmnTopic`	`String`	Smn topic into which the message is to be posted
`CamelHwCloudSmnMessageTtl`	`Integer`	Validity of the posted notification message
`CamelHwCloudSmnTemplateTags`	`Map<String, String>`	Contains K,V pairs of tags and values when using operation `publishAsTemplatedMessage`
`CamelHwCloudSmnTemplateName`	`String`	Name of the template to use while using operation `publishAsTemplatedMessage`

CamelHwCloudSmnSubject

String

Subject tag for the outgoing notification

CamelHwCloudSmnTopic

String

Smn topic into which the message is to be posted

CamelHwCloudSmnMessageTtl

Integer

Validity of the posted notification message

CamelHwCloudSmnTemplateTags

Map<String, String>

Contains K,V pairs of tags and values when using operation publishAsTemplatedMessage

CamelHwCloudSmnTemplateName

String

Name of the template to use while using operation publishAsTemplatedMessage

Message properties set by the SMN producer

Header Type Description

Header	Type	Description
`CamelHwCloudSmnMesssageId`	`String`	Unique message id returned by Simple Message Notification server after processing the request
`CamelHwCloudSmnRequestId`	`String`	Unique request id returned by Simple Message Notification server after processing the request

CamelHwCloudSmnMesssageId

String

Unique message id returned by Simple Message Notification server after processing the request

CamelHwCloudSmnRequestId

String

Unique request id returned by Simple Message Notification server after processing the request

Supported list of smn services and corresponding operations

Service Operations

Service	Operations
`publishMessageService`	publishAsTextMessage, publishAsTemplatedMessage

publishMessageService

publishAsTextMessage, publishAsTemplatedMessage

Inline Configuration of route

publishAsTextMessage

Java DSL

from("direct:triggerRoute")
.setProperty(SmnProperties.NOTIFICATION_SUBJECT, constant("Notification Subject"))
.setProperty(SmnProperties.NOTIFICATION_TOPIC_NAME,constant(testConfiguration.getProperty("topic")))
.setProperty(SmnProperties.NOTIFICATION_TTL, constant(60))
.to("hwcloud-smn:publishMessageService?operation=publishAsTextMessage&authKey=*********&secretKey=********&projectId=9071a38e7f6a4ba7b7bcbeb7d4ea6efc&region=cn-north-4")

XML DSL

<route>
   <from uri="direct:triggerRoute" />
   <setProperty name="CamelHwCloudSmnSubject">
      <constant>this is my subjectline</constant>
   </setProperty>
   <setProperty name="CamelHwCloudSmnTopic">
      <constant>reji-test</constant>
   </setProperty>
   <setProperty name="CamelHwCloudSmnMessageTtl">
      <constant>60</constant>
   </setProperty>
   <to uri="hwcloud-smn:publishMessageService?operation=publishAsTextMessage&amp;authKey=*********&amp;secretKey=********&amp;projectId=9071a38e7f6a4ba7b7bcbeb7d4ea6efc&amp;region=cn-north-4" />
</route>

publishAsTemplatedMessage

Java DSL

from("direct:triggerRoute")
.setProperty("CamelHwCloudSmnSubject", constant("This is my subjectline"))
.setProperty("CamelHwCloudSmnTopic", constant("reji-test"))
.setProperty("CamelHwCloudSmnMessageTtl", constant(60))
.setProperty("CamelHwCloudSmnTemplateTags", constant(tags))
.setProperty("CamelHwCloudSmnTemplateName", constant("hello-template"))
.to("hwcloud-smn:publishMessageService?operation=publishAsTemplatedMessage&authKey=*********&secretKey=********&projectId=9071a38e7f6a4ba7b7bcbeb7d4ea6efc&region=cn-north-4")

Using ServiceKey configuration Bean

Authentication key and secret keys are required to authenticate against cloud smn service. You can avoid having them being exposed and scattered over in your endpoint uri by wrapping them inside a bean of class org.apache.camel.component.huaweicloud.smn.models.ServiceKeys. Add it to the registry and let camel look it up by referring the object via endpoint query parameter serviceKeys. Check the following code snippets

<bean id="myServiceKeyConfig" class="org.apache.camel.component.huaweicloud.smn.models.ServiceKeys">
   <property name="authenticationKey" value="your_auth_key" />
   <property name="secretKey" value="your_secret_key" />
</bean>

from("direct:triggerRoute")
 .setProperty(SmnProperties.NOTIFICATION_SUBJECT, constant("Notification Subject"))
 .setProperty(SmnProperties.NOTIFICATION_TOPIC_NAME,constant(testConfiguration.getProperty("topic")))
 .setProperty(SmnProperties.NOTIFICATION_TTL, constant(60))
 .to("hwcloud-smn:publishMessageService?operation=publishAsTextMessage&projectId=9071a38e7f6a4ba7b7bcbeb7d4ea6efc&region=cn-north-4&serviceKeys=#myServiceKeyConfig")