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-rw-r--r--infra/translate-utils/src/main/java/io/fd/honeycomb/translate/util/read/cache/StaticCacheKeyFactory.java56
1 files changed, 56 insertions, 0 deletions
diff --git a/infra/translate-utils/src/main/java/io/fd/honeycomb/translate/util/read/cache/StaticCacheKeyFactory.java b/infra/translate-utils/src/main/java/io/fd/honeycomb/translate/util/read/cache/StaticCacheKeyFactory.java
new file mode 100644
index 000000000..216aadb9b
--- /dev/null
+++ b/infra/translate-utils/src/main/java/io/fd/honeycomb/translate/util/read/cache/StaticCacheKeyFactory.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.honeycomb.translate.util.read.cache;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * {@link CacheKeyFactory} that produces the same key irrespective of the given {@link InstanceIdentifier}.
+ */
+public class StaticCacheKeyFactory implements CacheKeyFactory<Void> {
+
+ private final String key;
+ private final Class<?> cachedDataType;
+
+ /**
+ * Construct static cache key factory.
+ *
+ * @param key string to be used as cache key
+ * @param cachedDataType data for which this factory is creating keys
+ */
+ public StaticCacheKeyFactory(@Nonnull final String key, @Nonnull final Class<?> cachedDataType) {
+ this.key = checkNotNull(key, "key should not be null");
+ this.cachedDataType = checkNotNull(cachedDataType, "cachedDataType should not be null");
+ }
+
+ @Nonnull
+ @Override
+ public String createKey(@Nonnull final InstanceIdentifier<?> actualContextIdentifier,
+ @Nullable final Void dumpParams) {
+ return key;
+ }
+
+ @Nonnull
+ @Override
+ public Class<?> getCachedDataType() {
+ return cachedDataType;
+ }
+}