Sprinkle @NonNull annotations

[controller.git] / opendaylight / md-sal / cds-access-api / src / main / java / org / opendaylight / controller / cluster / access / concepts / TransactionIdentifier.java

diff --git a/opendaylight/md-sal/cds-access-api/src/main/java/org/opendaylight/controller/cluster/access/concepts/TransactionIdentifier.java b/opendaylight/md-sal/cds-access-api/src/main/java/org/opendaylight/controller/cluster/access/concepts/TransactionIdentifier.java
index 2aaf8264aacadf2084f176b9d64b536d7cc76aae..d2a92ea1913374a2dfa693195f27f1916938d347 100644 (file)
--- a/opendaylight/md-sal/cds-access-api/src/main/java/org/opendaylight/controller/cluster/access/concepts/TransactionIdentifier.java
+++ b/opendaylight/md-sal/cds-access-api/src/main/java/org/opendaylight/controller/cluster/access/concepts/TransactionIdentifier.java
@@ -7,67 +7,82 @@
  */
 package org.opendaylight.controller.cluster.access.concepts;
 
+import static java.util.Objects.requireNonNull;
+
 import com.google.common.annotations.Beta;
-import com.google.common.base.MoreObjects;
-import com.google.common.base.Preconditions;
+import java.io.DataInput;
+import java.io.DataOutput;
 import java.io.Externalizable;
 import java.io.IOException;
 import java.io.ObjectInput;
 import java.io.ObjectOutput;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.concepts.Identifier;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.yangtools.concepts.WritableIdentifier;
+import org.opendaylight.yangtools.concepts.WritableObjects;
 
 /**
  * Globally-unique identifier of a transaction.
  *
- * @param <T> Frontend type
- *
  * @author Robert Varga
  */
 @Beta
-public final class TransactionIdentifier<T extends FrontendType> implements Identifier {
-    private static final class Proxy<T extends FrontendType> implements Externalizable {
+public final class TransactionIdentifier implements WritableIdentifier {
+    private static final class Proxy implements Externalizable {
         private static final long serialVersionUID = 1L;
-        private LocalHistoryIdentifier<T> historyId;
+        private LocalHistoryIdentifier historyId;
         private long transactionId;
 
+        // checkstyle flags the public modifier as redundant however it is explicitly needed for Java serialization to
+        // be able to create instances via reflection.
+        @SuppressWarnings("checkstyle:RedundantModifier")
         public Proxy() {
             // For Externalizable
         }
 
-        Proxy(final LocalHistoryIdentifier<T> historyId, final long transactionId) {
-            this.historyId = Preconditions.checkNotNull(historyId);
+        Proxy(final LocalHistoryIdentifier historyId, final long transactionId) {
+            this.historyId = requireNonNull(historyId);
             this.transactionId = transactionId;
         }
 
         @Override
         public void writeExternal(final ObjectOutput out) throws IOException {
-            out.writeObject(historyId);
-            out.writeLong(transactionId);
+            historyId.writeTo(out);
+            WritableObjects.writeLong(out, transactionId);
         }
 
-        @SuppressWarnings("unchecked")
         @Override
-        public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
-            historyId = (LocalHistoryIdentifier<T>) in.readObject();
-            transactionId = in.readLong();
+        public void readExternal(final ObjectInput in) throws IOException {
+            historyId = LocalHistoryIdentifier.readFrom(in);
+            transactionId = WritableObjects.readLong(in);
         }
 
         private Object readResolve() {
-            return new TransactionIdentifier<>(historyId, transactionId);
+            return new TransactionIdentifier(historyId, transactionId);
         }
     }
 
     private static final long serialVersionUID = 1L;
-    private final LocalHistoryIdentifier<T> historyId;
+    private final @NonNull LocalHistoryIdentifier historyId;
     private final long transactionId;
+    private String shortString;
 
-    public TransactionIdentifier(final @Nonnull LocalHistoryIdentifier<T> historyId, final long transactionId) {
-        this.historyId = Preconditions.checkNotNull(historyId);
+    public TransactionIdentifier(final @NonNull LocalHistoryIdentifier historyId, final long transactionId) {
+        this.historyId = requireNonNull(historyId);
         this.transactionId = transactionId;
     }
 
-    public LocalHistoryIdentifier<T> getHistoryId() {
+    public static @NonNull TransactionIdentifier readFrom(final DataInput in) throws IOException {
+        final LocalHistoryIdentifier historyId = LocalHistoryIdentifier.readFrom(in);
+        return new TransactionIdentifier(historyId, WritableObjects.readLong(in));
+    }
+
+    @Override
+    public void writeTo(final DataOutput out) throws IOException {
+        historyId.writeTo(out);
+        WritableObjects.writeLong(out, transactionId);
+    }
+
+    public @NonNull LocalHistoryIdentifier getHistoryId() {
         return historyId;
     }
 
@@ -81,25 +96,36 @@ public final class TransactionIdentifier<T extends FrontendType> implements Iden
     }
 
     @Override
-    public boolean equals(final Object o) {
-        if (this == o) {
+    public boolean equals(final Object obj) {
+        if (this == obj) {
             return true;
         }
-        if (!(o instanceof TransactionIdentifier)) {
+        if (!(obj instanceof TransactionIdentifier)) {
             return false;
         }
 
-        final TransactionIdentifier<?> other = (TransactionIdentifier<?>) o;
+        final TransactionIdentifier other = (TransactionIdentifier) obj;
         return transactionId == other.transactionId && historyId.equals(other.historyId);
     }
 
+    public String toShortString() {
+        if (shortString == null) {
+            String histStr = historyId.getHistoryId() == 0 ? "" : "-chn-" + historyId.getHistoryId();
+            shortString = historyId.getClientId().getFrontendId().getMemberName().getName() + "-"
+                    + historyId.getClientId().getFrontendId().getClientType().getName() + "-fe-"
+                    + historyId.getClientId().getGeneration() + histStr + "-txn-" + transactionId
+                    + "-" + historyId.getCookie();
+        }
+
+        return shortString;
+    }
+
     @Override
     public String toString() {
-        return MoreObjects.toStringHelper(TransactionIdentifier.class).add("history", historyId)
-                .add("transaction", transactionId).toString();
+        return toShortString();
     }
 
     private Object writeReplace() {
-        return new Proxy<>(historyId, transactionId);
+        return new Proxy(historyId, transactionId);
     }
 }