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feat: add automatic CRaC priming for powertools-parameters-ssm #2613

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feat: add automatic CRaC priming for powertools-parameters-ssm #2613

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22 changes: 22 additions & 0 deletions powertools-parameters/powertools-parameters-ssm/pom.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,10 @@
<artifactId>aspectjrt</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.crac</groupId>
<artifactId>crac</artifactId>
</dependency>

<!-- Test dependencies -->
<dependency>
Expand Down Expand Up @@ -108,6 +112,24 @@
</build>

<profiles>
<profile>
<id>generate-classesloaded-file</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<argLine>
-Xlog:class+load=info:classesloaded.txt
--add-opens java.base/java.util=ALL-UNNAMED
--add-opens java.base/java.lang=ALL-UNNAMED
</argLine>
</configuration>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>native</id>
<dependencies>
Expand Down
28 changes: 27 additions & 1 deletion ...eters-ssm/src/main/java/software/amazon/lambda/powertools/parameters/ssm/SSMProvider.java
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Original file line number Diff line number Diff line change
Expand Up @@ -16,11 +16,14 @@

import java.util.HashMap;
import java.util.Map;
import org.crac.Core;
import org.crac.Resource;
import software.amazon.awssdk.services.ssm.SsmClient;
import software.amazon.awssdk.services.ssm.model.GetParameterRequest;
import software.amazon.awssdk.services.ssm.model.GetParametersByPathRequest;
import software.amazon.awssdk.services.ssm.model.GetParametersByPathResponse;
import software.amazon.awssdk.utils.StringUtils;
import software.amazon.lambda.powertools.common.internal.ClassPreLoader;
import software.amazon.lambda.powertools.parameters.BaseProvider;
import software.amazon.lambda.powertools.parameters.cache.CacheManager;
import software.amazon.lambda.powertools.parameters.transform.TransformationManager;
Expand Down Expand Up @@ -63,12 +66,25 @@
* >>> /path/to/parameters/others/key3 -> value3
* </pre>
*/
public class SSMProvider extends BaseProvider {
public class SSMProvider extends BaseProvider implements Resource {

private final SsmClient client;
private final ThreadLocal<Boolean> decrypt = ThreadLocal.withInitial(() -> false);
private final ThreadLocal<Boolean> recursive = ThreadLocal.withInitial(() -> false);

// Dummy instance to register SSMProvider with CRaC
private static final SSMProvider INSTANCE =
new SSMProvider(new CacheManager(), new TransformationManager(), null);

// Static block to ensure CRaC registration happens at class loading time
static {
registerWithGlobalContext();
}

static void registerWithGlobalContext() {
Core.getGlobalContext().register(INSTANCE);
}

/**
* Constructor with custom {@link SsmClient}. <br/>
* Use when you need to customize region or any other attribute of the client.<br/><br/>
Expand Down Expand Up @@ -205,4 +221,14 @@ SsmClient getClient() {
return client;
}

@Override
public void beforeCheckpoint(org.crac.Context<? extends Resource> context) throws Exception {
ClassPreLoader.preloadClasses();
}

@Override
public void afterRestore(org.crac.Context<? extends Resource> context) throws Exception {
// No action needed after restore
}

}
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