mdsaltrace utility for debugging

[controller.git] / opendaylight / md-sal / mdsal-trace / dom-impl / src / main / java / org / opendaylight / controller / md / sal / trace / dom / impl / TracingWriteTransaction.java

diff --git a/opendaylight/md-sal/mdsal-trace/dom-impl/src/main/java/org/opendaylight/controller/md/sal/trace/dom/impl/TracingWriteTransaction.java b/opendaylight/md-sal/mdsal-trace/dom-impl/src/main/java/org/opendaylight/controller/md/sal/trace/dom/impl/TracingWriteTransaction.java
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+++ b/opendaylight/md-sal/mdsal-trace/dom-impl/src/main/java/org/opendaylight/controller/md/sal/trace/dom/impl/TracingWriteTransaction.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2016 Red Hat, Inc. 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.controller.md.sal.trace.dom.impl;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.ListenableFuture;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+
+import org.opendaylight.controller.md.sal.common.api.TransactionStatus;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
+import org.opendaylight.yangtools.yang.common.RpcResult;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+
+class TracingWriteTransaction implements DOMDataWriteTransaction {
+
+    private final DOMDataWriteTransaction delegate;
+    private final TracingBroker tracingBroker;
+    private final List<String> logs = new ArrayList<>();
+
+    TracingWriteTransaction(DOMDataWriteTransaction delegate, TracingBroker tracingBroker) {
+        this.delegate = Objects.requireNonNull(delegate);
+        this.tracingBroker = Objects.requireNonNull(tracingBroker);
+    }
+
+    private void recordOp(LogicalDatastoreType store, YangInstanceIdentifier yiid,
+                                                                            String method, NormalizedNode<?,?> node) {
+        if (!tracingBroker.isWriteWatched(yiid, store)) {
+            return;
+        }
+
+        Object value = null;
+        if (node != null) {
+            value = node.getValue();
+        }
+
+        if (value != null && value instanceof ImmutableSet && ((Set)value).isEmpty()) {
+            if (tracingBroker.LOG.isDebugEnabled()) {
+                tracingBroker.LOG.debug("Empty data set write to {}", tracingBroker.toPathString(yiid));
+            }
+        } else {
+            StringBuilder sb = new StringBuilder();
+            sb.append("Method \"").append(method);
+            sb.append("\" to ").append(store);
+            sb.append(" at ").append(tracingBroker.toPathString(yiid)).append('.');
+            sb.append(" Data: ");
+            if (node != null) {
+                sb.append(node.getValue());
+            } else {
+                sb.append("null");
+            }
+            sb.append(" Stack:").append(tracingBroker.getStackSummary());
+            synchronized (this) {
+                logs.add(sb.toString());
+            }
+        }
+    }
+
+    private synchronized void logOps() {
+        for (String log : logs) {
+            tracingBroker.LOG.warn(log);
+        }
+        logs.clear();
+    }
+
+    @Override
+    public void put(LogicalDatastoreType store, YangInstanceIdentifier yiid, NormalizedNode<?, ?> node) {
+        recordOp(store, yiid, "put", node);
+        delegate.put(store, yiid, node);
+    }
+
+    @Override
+    public void merge(LogicalDatastoreType store, YangInstanceIdentifier yiid, NormalizedNode<?, ?> node) {
+        recordOp(store, yiid, "merge", node);
+        delegate.merge(store, yiid, node);
+    }
+
+    @Override
+    public boolean cancel() {
+        logs.clear();
+        return delegate.cancel();
+    }
+
+    @Override
+    public void delete(LogicalDatastoreType store, YangInstanceIdentifier yiid) {
+        recordOp(store, yiid, "delete", null);
+        delegate.delete(store, yiid);
+    }
+
+    @Override
+    public CheckedFuture<Void, TransactionCommitFailedException> submit() {
+        logOps();
+        return delegate.submit();
+    }
+
+    @Override
+    public ListenableFuture<RpcResult<TransactionStatus>> commit() {
+        logOps();
+        return delegate.commit();
+    }
+
+    @Override
+    public Object getIdentifier() {
+        return delegate.getIdentifier();
+    }
+}