10.2. AWS-CW
CW Component
*Available as of Camel 2.11
The CW component allows messages to be sent to an Amazon CloudWatch metrics. The implementation of the Amazon API is provided by the AWS SDK.
Prerequisites
You must have a valid Amazon Web Services developer account, and be signed up to use Amazon CloudWatch. More information are available at Amazon CloudWatch.
URI Format
aws-cw://namespace[?options]
The metrics will be created if they don't already exists. You can append query options to the URI in the following format,
?options=value&option2=value&...
URI Options
| Name | Default Value | Context | Description |
|---|---|---|---|
| amazonCwClient |
null
|
Producer |
Reference to a com.amazonaws.services.cloudwatch.AmazonCloudWatch in the Registry.
|
| accessKey |
null
|
Producer | Amazon AWS Access Key |
| secretKey |
null
|
Producer | Amazon AWS Secret Key |
| name |
null
|
Producer | The metric name which is used if the message header 'CamelAwsCwMetricName' is not present. |
| value |
1.0
|
Producer | The metric value which is used if the message header 'CamelAwsCwMetricValue' is not present. |
| unit |
Count
|
Producer | The metric unit which is used if the message header 'CamelAwsCwMetricUnit' is not present. |
| namespace |
null
|
Producer | The metric namespace which is used if the message header 'CamelAwsCwMetricNamespace' is not present. |
| timestamp |
null
|
Producer | The metric timestamp which is used if the message header 'CamelAwsCwMetricTimestamp' is not present. |
| amazonCwEndpoint |
null
|
Producer | The region with which the AWS-CW client wants to work with. |
Required CW component options
You have to provide the amazonCwClient in the Registry or your accessKey and secretKey to access the Amazon's CloudWatch.
Usage
Message headers evaluated by the CW producer
| Header | Type | Description |
|---|---|---|
CamelAwsCwMetricName
|
String
|
The Amazon CW metric name. |
CamelAwsCwMetricValue
|
Double
|
The Amazon CW metric value. |
CamelAwsCwMetricUnit
|
String
|
The Amazon CW metric unit. |
CamelAwsCwMetricNamespace
|
String
|
The Amazon CW metric namespace. |
CamelAwsCwMetricTimestamp
|
Date
|
The Amazon CW metric timestamp. |
CamelAwsCwMetricDimensionName
|
String
|
Camel 2.12: The Amazon CW metric dimension name. |
CamelAwsCwMetricDimensionValue
|
String
|
Camel 2.12: The Amazon CW metric dimension value. |
CamelAwsCwMetricDimensions
|
Map<String, String>
|
Camel 2.12: A map of dimension names and dimension values. |
Advanced AmazonCloudWatch configuration
If you need more control over the
AmazonCloudWatch instance configuration you can create your own instance and refer to it from the URI:
from("direct:start")
.to("aws-cw://namepsace?amazonCwClient=#client");
For example if your Camel Application is running behind a firewall:
AWSCredentials awsCredentials = new BasicAWSCredentials("myAccessKey", "mySecretKey");
ClientConfiguration clientConfiguration = new ClientConfiguration();
clientConfiguration.setProxyHost("http://myProxyHost");
clientConfiguration.setProxyPort(8080);
AmazonCloudWatch client = new AmazonCloudWatchClient(awsCredentials, clientConfiguration);
registry.bind("client", client);
Dependencies
Maven users will need to add the following dependency to their pom.xml.
pom.xml
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-aws</artifactId>
<version>${camel-version}</version>
</dependency>
where
${camel-version} must be replaced by the actual version of Camel (2.10 or higher).
