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

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Here is the source code for org.lendingclub.mercator.aws.NetworkInterfaceScanner.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.Collections;
import java.util.Optional;

import org.lendingclub.neorx.NeoRxClient;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.google.common.base.Strings;

public class NetworkInterfaceScanner extends AbstractEC2Scanner {

    public NetworkInterfaceScanner(AWSScannerBuilder builder) {
        super(builder);
        setNeo4jLabel("AwsEc2NetworkInterface");
        jsonConverter.withFlattenNestedObjects(true);
    }

    @Override
    protected void doScan() {
        GraphNodeGarbageCollector gc = newGarbageCollector().bindScannerContext();
        getClient().describeNetworkInterfaces().getNetworkInterfaces().forEach(intf -> {
            ObjectNode n = convertAwsObject(intf, getRegion());

            NeoRxClient neo4j = getNeoRxClient();
            try {
                String cypher = "merge (x:AwsEc2NetworkInterface {aws_arn:{arn}}) set x+={props}, x.updateTs=timestamp() return x";
                String arn = n.path("aws_arn").asText();
                neo4j.execCypher(cypher, "arn", arn, "props", n).forEach(it -> {
                    gc.MERGE_ACTION.accept(it);
                });

                LinkageHelper instanceLinkageHelper = new LinkageHelper().withNeo4j(neo4j).withFromArn(arn)
                        .withFromLabel(getNeo4jLabel()).withTargetLabel("AwsEc2Instance")
                        .withLinkLabel("ATTACHED_TO");
                if (intf.getAttachment() != null && "attached".equals(intf.getAttachment().getStatus())
                        && !Strings.isNullOrEmpty(intf.getAttachment().getInstanceId())) {
                    instanceLinkageHelper.withTargetValues(Collections
                            .singletonList(createEc2Arn("instance", intf.getAttachment().getInstanceId())));
                }
                instanceLinkageHelper.execute();

                LinkageHelper subnetLinkageHelper = new LinkageHelper().withNeo4j(neo4j)
                        .withFromLabel(getNeo4jLabel()).withFromArn(arn).withTargetLabel("AwsSubnet")
                        .withLinkLabel("EXISTS_IN")
                        .withTargetValues(Strings.isNullOrEmpty(intf.getSubnetId()) ? Collections.emptyList()
                                : Collections.singletonList(createEc2Arn("subnet", intf.getSubnetId())));
                subnetLinkageHelper.execute();

                incrementEntityCount();
            } catch (RuntimeException e) {
                gc.markException(e);
                maybeThrow(e);
            }
        });
    }

    @Override
    public Optional<String> computeArn(JsonNode n) {
        return Optional.of(createEc2Arn("network-interface", n.path("aws_networkInterfaceId").asText()));
    }

}