org.lendingclub.mercator.aws.SubnetScanner.java Source code

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Here is the source code for org.lendingclub.mercator.aws.SubnetScanner.java

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/**
 * Copyright 2017 Lending Club, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.lendingclub.mercator.aws;

import java.util.Optional;

import org.lendingclub.neorx.NeoRxClient;

import com.amazonaws.services.ec2.model.DescribeSubnetsResult;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.google.common.base.Preconditions;

public class SubnetScanner extends AbstractEC2Scanner {

    public SubnetScanner(AWSScannerBuilder builder) {
        super(builder);

    }

    @Override
    public Optional<String> computeArn(JsonNode n) {

        String region = n.get(AWSScanner.AWS_REGION_ATTRIBUTE).asText();

        return Optional.of(String.format("arn:aws:ec2:%s:%s:subnet/%s", region,
                n.get(AccountScanner.ACCOUNT_ATTRIBUTE).asText(), n.get("aws_subnetId").asText()));

    }

    @Override
    protected void doScan() {

        rateLimit();
        DescribeSubnetsResult result = getClient().describeSubnets();

        GraphNodeGarbageCollector gc = newGarbageCollector().label("AwsSubnet").region(getRegion());

        result.getSubnets().forEach(it -> {
            try {
                ObjectNode n = convertAwsObject(it, getRegion());

                String cypher = "MERGE (v:AwsSubnet {aws_arn:{aws_arn}}) set v+={props}, v.updateTs=timestamp() return v";

                NeoRxClient client = getNeoRxClient();
                Preconditions.checkNotNull(client);
                client.execCypher(cypher, "aws_arn", n.get("aws_arn").asText(), "props", n).forEach(r -> {
                    gc.MERGE_ACTION.accept(r);
                    getShadowAttributeRemover().removeTagAttributes("AwsSubnet", n, r);
                });
                incrementEntityCount();

            } catch (RuntimeException e) {
                gc.markException(e);
                maybeThrow(e, "problem scanning subnets");
            }
        });

        gc.invoke();
    }

}