make the skin renderer less bad (thanks bray)

src/main/java/cc/fascinated/model/dns/DNSRecord.java

@@ -0,0 +1,29 @@
+package cc.fascinated.model.dns;
+
+import io.micrometer.common.lang.NonNull;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Setter @Getter
+@NoArgsConstructor @AllArgsConstructor
+public abstract class DNSRecord {
+    /**
+     * The type of this record.
+     */
+    @NonNull
+    private Type type;
+
+    /**
+     * The TTL (Time To Live) of this record.
+     */
+    private long ttl;
+
+    /**
+     * Types of a record.
+     */
+    public enum Type {
+        A, SRV
+    }
+}

src/main/java/cc/fascinated/model/dns/impl/ARecord.java

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+package cc.fascinated.model.dns.impl;
+
+import cc.fascinated.model.dns.DNSRecord;
+import io.micrometer.common.lang.NonNull;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import java.net.InetAddress;
+
+@Setter @Getter
+@NoArgsConstructor
+public final class ARecord extends DNSRecord {
+    /**
+     * The address of this record, null if unresolved.
+     */
+    private String address;
+
+    public ARecord(@NonNull org.xbill.DNS.ARecord bootstrap) {
+        super(Type.A, bootstrap.getTTL());
+        InetAddress address = bootstrap.getAddress();
+        this.address = address == null ? null : address.getHostAddress();
+    }
+}

src/main/java/cc/fascinated/model/dns/impl/SRVRecord.java

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+package cc.fascinated.model.dns.impl;
+
+import cc.fascinated.model.dns.DNSRecord;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import io.micrometer.common.lang.NonNull;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import java.net.InetSocketAddress;
+
+@Setter @Getter
+@NoArgsConstructor
+public final class SRVRecord extends DNSRecord {
+    /**
+     * The priority of this record.
+     */
+    private int priority;
+
+    /**
+     * The weight of this record.
+     */
+    private int weight;
+
+    /**
+     * The port of this record.
+     */
+    private int port;
+
+    /**
+     * The target of this record.
+     */
+    @NonNull private String target;
+
+    public SRVRecord(@NonNull org.xbill.DNS.SRVRecord bootstrap) {
+        super(Type.SRV, bootstrap.getTTL());
+        priority = bootstrap.getPriority();
+        weight = bootstrap.getWeight();
+        port = bootstrap.getPort();
+        target = bootstrap.getTarget().toString().replaceFirst("\\.$", "");
+    }
+
+    /**
+     * Get a socket address from
+     * the target and port.
+     *
+     * @return the socket address
+     */
+    @NonNull @JsonIgnore
+    public InetSocketAddress getSocketAddress() {
+        return new InetSocketAddress(target, port);
+    }
+}