org.opendaylight.atrium.hostservice.impl.ConfigReader.java Source code

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Here is the source code for org.opendaylight.atrium.hostservice.impl.ConfigReader.java

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/*
 * Copyright (c) 2015 Wipro Ltd. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.atrium.hostservice.impl;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.io.IOUtils;
import org.opendaylight.atrium.atriumutil.AtriumUtils;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Address;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hostservice.api.rev150725.Addresses;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hostservice.api.rev150725.AddressesBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hostservice.api.rev150725.addresses.Address;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hostservice.api.rev150725.addresses.AddressBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hostservice.api.rev150725.addresses.AddressKey;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

public class ConfigReader {
    private static JsonNode rootJsonNode;

    public static boolean initialize(URL configFileUrl) {
        byte[] jsonData = null;
        if (configFileUrl != null) {
            try {
                InputStream input = configFileUrl.openStream();
                jsonData = IOUtils.toByteArray(input);
                input.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        ObjectMapper objectMapper = new ObjectMapper();
        try {
            rootJsonNode = objectMapper.readTree(jsonData);
        } catch (IOException e) {
            return false;
        }
        return true;
    }

    public static Addresses getArpAddresses() {

        if (rootJsonNode == null) {
            return null;
        }

        JsonNode addressesJsonNode = rootJsonNode.path("addresses");
        Iterator<JsonNode> addressesNodeIterator = addressesJsonNode.elements();

        AddressesBuilder addressesBuilder = new AddressesBuilder();
        List<Address> addressList = new ArrayList<Address>();

        while (addressesNodeIterator.hasNext()) {
            AddressBuilder addressBuilder = new AddressBuilder();
            JsonNode addressElementNode = addressesNodeIterator.next();

            String hexDpid = addressElementNode.path("dpid").asText();
            String dpid = AtriumUtils.hexDpidStringToOpenFlowDpid(hexDpid);
            NodeConnectorId port = new NodeConnectorId(addressElementNode.path("port").asText());

            MacAddress mac = new MacAddress(addressElementNode.path("mac").asText());

            JsonNode ipsJsonNode = addressElementNode.path("ips");
            Iterator<JsonNode> ipsJsonNodeIterator = ipsJsonNode.elements();

            IpAddress ips = null;
            if (ipsJsonNodeIterator.hasNext()) {
                JsonNode ipJsonNode = ipsJsonNodeIterator.next();
                ips = new IpAddress(new Ipv4Address(ipJsonNode.asText().split("/")[0]));
            }

            int vlan = (int) addressElementNode.path("vlan").asLong();
            if (vlan == 0) {
                vlan = 1;
            }

            AddressKey addressKey = new AddressKey(ips);
            addressBuilder.setDpid(dpid);
            addressBuilder.setOfPortId(port);
            addressBuilder.setMac(mac);
            addressBuilder.setIpAddress(ips);
            addressBuilder.setVlan(new Integer(vlan));
            addressBuilder.setKey(addressKey);

            addressList.add(addressBuilder.build());
        }
        addressesBuilder.setAddress(addressList);
        return addressesBuilder.build();
    }
}