ONOS-7001 Support for direct counters
Currently Bmv2 returns UNKNOWN error when reading direct counters.
Change-Id: I834d7b5a8627181c6888500545e1bdbfe9af8dc1
diff --git a/core/api/src/main/java/org/onosproject/net/pi/runtime/PiIndirectCounterCellId.java b/core/api/src/main/java/org/onosproject/net/pi/runtime/PiIndirectCounterCellId.java
new file mode 100644
index 0000000..6f3f73a
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/pi/runtime/PiIndirectCounterCellId.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.net.pi.runtime;
+
+import com.google.common.annotations.Beta;
+import org.onlab.util.Identifier;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.onosproject.net.pi.runtime.PiCounterType.INDIRECT;
+
+/**
+ * Identifier of an indirect counter cell in a protocol-independent pipeline.
+ */
+@Beta
+public final class PiIndirectCounterCellId extends Identifier<String> implements PiCounterCellId {
+
+ private final PiCounterId counterId;
+ private final long index;
+
+ private PiIndirectCounterCellId(PiCounterId counterId, long index) {
+ super(counterId.toString() + "[" + index + "]");
+ this.counterId = counterId;
+ this.index = index;
+ }
+
+ /**
+ * Returns a counter cell identifier for the given counter identifier and index.
+ *
+ * @param counterId counter identifier
+ * @param index index
+ * @return counter cell identifier
+ */
+ public static PiIndirectCounterCellId of(PiCounterId counterId, long index) {
+ checkNotNull(counterId);
+ checkArgument(counterId.type() == INDIRECT, "Counter ID must be of type INDIRECT");
+ checkArgument(index >= 0, "Index must be a positive integer");
+ return new PiIndirectCounterCellId(counterId, index);
+ }
+
+ /**
+ * Returns the index of this cell.
+ *
+ * @return cell index
+ */
+ public long index() {
+ return index;
+ }
+
+ @Override
+ public PiCounterId counterId() {
+ return counterId;
+ }
+
+ @Override
+ public PiCounterType type() {
+ return INDIRECT;
+ }
+}