Add logging to AWSParameterStorePropertySource.

Closes gh-529
Fixes gh-509
Fixes gh-527

Co-authored-by: Maciej Walkowiak <[email protected]>

Author: cschroedl-gov

docs/src/main/asciidoc/_configprops.adoc

@@ -1,18 +1,18 @@
 |===
 |Name | Default | Description
 
-|aws.paramstore.default-context | application |
+|aws.paramstore.default-context | application | 
 |aws.paramstore.enabled | true | Is AWS Parameter Store support enabled.
 |aws.paramstore.fail-fast | true | Throw exceptions during config lookup if true, otherwise, log warnings.
 |aws.paramstore.name |  | Alternative to spring.application.name to use in looking up values in AWS Parameter Store.
 |aws.paramstore.prefix | /config | Prefix indicating first level for every property. Value must start with a forward slash followed by a valid path segment or be empty. Defaults to "/config".
-|aws.paramstore.profile-separator | _ |
-|aws.secretsmanager.default-context | application |
+|aws.paramstore.profile-separator | _ | 
+|aws.secretsmanager.default-context | application | 
 |aws.secretsmanager.enabled | true | Is AWS Secrets Manager support enabled.
 |aws.secretsmanager.fail-fast | true | Throw exceptions during config lookup if true, otherwise, log warnings.
 |aws.secretsmanager.name |  | Alternative to spring.application.name to use in looking up values in AWS Secrets Manager.
 |aws.secretsmanager.prefix | /secret | Prefix indicating first level for every property. Value must start with a forward slash followed by a valid path segment or be empty. Defaults to "/config".
-|aws.secretsmanager.profile-separator | _ |
+|aws.secretsmanager.profile-separator | _ | 
 |cloud.aws.credentials.access-key |  | The access key to be used with a static provider.
 |cloud.aws.credentials.instance-profile | true | Configures an instance profile credentials provider with no further configuration.
 |cloud.aws.credentials.profile-name |  | The AWS profile name.
@@ -23,8 +23,8 @@
 |cloud.aws.loader.max-pool-size |  | The maximum pool size of the Task Executor used for parallel S3 interaction. @see org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor#setMaxPoolSize(int)
 |cloud.aws.loader.queue-capacity |  | The maximum queue capacity for backed up S3 requests. @see org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor#setQueueCapacity(int)
 |cloud.aws.region.auto | true | Enables automatic region detection based on the EC2 meta data service.
-|cloud.aws.region.use-default-aws-region-chain | false | Use the DefaultAwsRegion Chain instead of configuring a custom region provider chain.
-|cloud.aws.region.static |  |
+|cloud.aws.region.static |  | 
+|cloud.aws.region.use-default-aws-region-chain | false | Whether default AWS SDK region provider chain should be used when auto is set to true.
 |cloud.aws.stack.auto | true | Enables the automatic stack name detection for the application.
 |cloud.aws.stack.name | myStackName | The name of the manually configured stack name that will be used to retrieve the resources.
 

docs/src/main/asciidoc/spring-cloud-aws.adoc

@@ -664,6 +664,17 @@ You can configure the following settings in a Spring Cloud `bootstrap.properties
 |Can be used to disable the Parameter Store Configuration support even though the auto-configuration is on the classpath.
 |===
 
+[TIP]
+====
+In order to find out which properties are retrieved from AWS Parameter Store on application startup,
+turn on `DEBUG` logging on `org.springframework.cloud.aws.paramstore.AwsParamStorePropertySource` class.
+
+[source,indent=0]
+----
+logging.level.org.springframework.cloud.aws.paramstore.AwsParamStorePropertySource=debug
+----
+====
+
 === Integrating your Spring Cloud application with the AWS Secrets Manager
 
 Spring Cloud provides support for centralized configuration, which can be read and made available as a regular Spring

spring-cloud-aws-parameter-store-config/src/main/java/org/springframework/cloud/aws/paramstore/AwsParamStorePropertySource.java

@@ -24,6 +24,8 @@
 import com.amazonaws.services.simplesystemsmanagement.model.GetParametersByPathRequest;
 import com.amazonaws.services.simplesystemsmanagement.model.GetParametersByPathResult;
 import com.amazonaws.services.simplesystemsmanagement.model.Parameter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import org.springframework.core.env.EnumerablePropertySource;
 
@@ -37,6 +39,9 @@
 public class AwsParamStorePropertySource
 		extends EnumerablePropertySource<AWSSimpleSystemsManagement> {
 
+	private static final Logger LOGGER = LoggerFactory
+			.getLogger(AwsParamStorePropertySource.class);
+
 	private String context;
 
 	private Map<String, Object> properties = new LinkedHashMap<>();
@@ -69,6 +74,8 @@ private void getParameters(GetParametersByPathRequest paramsRequest) {
 				.getParametersByPath(paramsRequest);
 		for (Parameter parameter : paramsResult.getParameters()) {
 			String key = parameter.getName().replace(context, "").replace('/', '.');
+			LOGGER.debug("Populating property retrieved from AWS Parameter Store: {}",
+					key);
 			properties.put(key, parameter.getValue());
 		}
 		if (paramsResult.getNextToken() != null) {