1package eu.siacs.conversations.xmpp.jingle.stanzas;
 2
 3import com.google.common.base.Preconditions;
 4
 5import eu.siacs.conversations.xml.Element;
 6import eu.siacs.conversations.xml.Namespace;
 7
 8public class IbbTransportInfo extends GenericTransportInfo {
 9
10    private IbbTransportInfo(final String name, final String xmlns) {
11        super(name, xmlns);
12    }
13
14    public IbbTransportInfo(final String transportId, final int blockSize) {
15        super("transport", Namespace.JINGLE_TRANSPORTS_IBB);
16        Preconditions.checkNotNull(transportId, "Transport ID can not be null");
17        Preconditions.checkArgument(blockSize > 0, "Block size must be larger than 0");
18        this.setAttribute("block-size", blockSize);
19        this.setAttribute("sid", transportId);
20    }
21
22    public String getTransportId() {
23        return this.getAttribute("sid");
24    }
25
26    public int getBlockSize() {
27        final String blockSize = this.getAttribute("block-size");
28        if (blockSize == null) {
29            return 0;
30        }
31        try {
32            return Integer.parseInt(blockSize);
33        } catch (NumberFormatException e) {
34            return 0;
35        }
36    }
37
38    public static IbbTransportInfo upgrade(final Element element) {
39        Preconditions.checkArgument("transport".equals(element.getName()), "Name of provided element is not transport");
40        Preconditions.checkArgument(Namespace.JINGLE_TRANSPORTS_IBB.equals(element.getNamespace()), "Element does not match ibb transport namespace");
41        final IbbTransportInfo transportInfo = new IbbTransportInfo("transport", Namespace.JINGLE_TRANSPORTS_IBB);
42        transportInfo.setAttributes(element.getAttributes());
43        transportInfo.setChildren(element.getChildren());
44        return transportInfo;
45    }
46}