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8.2. AWS-CW

CW Component
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*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
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aws-cw://namespace[?options]
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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
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Expand
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
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Message headers evaluated by the CW producer
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Expand
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
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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");
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The #client refers to a AmazonCloudWatch in the Registry.
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);
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Dependencies
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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>
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where ${camel-version} must be replaced by the actual version of Camel (2.10 or higher).
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