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Check if running in AWS before initializing #28

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Check if running in AWS before initializing #28

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44 changes: 26 additions & 18 deletions src/main/java/com/meltmedia/jgroups/aws/AWS_PING.java
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Original file line number Diff line number Diff line change
Expand Up @@ -15,10 +15,13 @@
*/
package com.meltmedia.jgroups.aws;

import com.amazonaws.regions.RegionUtils;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.model.DescribeInstancesRequest;
import com.amazonaws.services.ec2.model.Filter;
import com.amazonaws.services.ec2.model.Instance;
import com.amazonaws.util.EC2MetadataUtils;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.jgroups.Address;
Expand Down Expand Up @@ -174,27 +177,32 @@ public class AWS_PING extends Discovery {
public void init() throws Exception {
super.init();

//get the instance identity
try (CloseableHttpClient client = HttpClients.createDefault()) {
this.instanceIdentity = InstanceIdentity.getIdentity(client);
}
if(Regions.getCurrentRegion() != null) {
//get the instance identity
try (CloseableHttpClient client = HttpClients.createDefault()) {
this.instanceIdentity = InstanceIdentity.getIdentity(client);
}

//setup ec2 client
this.ec2 = EC2Factory.create(
instanceIdentity,
access_key,
secret_key,
credentials_provider_class,
new CredentialsProviderFactory(),
log_aws_error_messages);
//setup ec2 client
this.ec2 = EC2Factory.create(
instanceIdentity,
access_key,
secret_key,
credentials_provider_class,
new CredentialsProviderFactory(),
log_aws_error_messages);

this.ipAddressUtils = new IPAddressUtils(port_number, port_range);
this.tagUtils = new TagsUtils(ec2, instanceIdentity, tags).validateTags();
this.filterUtils = new FilterUtils(filters, tagUtils);
this.ipAddressUtils = new IPAddressUtils(port_number, port_range);
this.tagUtils = new TagsUtils(ec2, instanceIdentity, tags).validateTags();
this.filterUtils = new FilterUtils(filters, tagUtils);

log.info("Configured for instance: " + instanceIdentity.instanceId);
filterUtils.getAwsFilters().ifPresent(f -> log.info("Configured with filters [%s]", f));
tagUtils.getAwsTagNames().ifPresent(t -> log.info("Configured with tags [%s]", t));
log.info("Configured for instance: " + instanceIdentity.instanceId);
filterUtils.getAwsFilters().ifPresent(f -> log.info("Configured with filters [%s]", f));
tagUtils.getAwsTagNames().ifPresent(t -> log.info("Configured with tags [%s]", t));
}
else {
log.debug("Could not determine AWS Region. Assuming instance is not running in AWS...");
}
}

/**
Expand Down