diff options
Diffstat (limited to 'vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/cache/DumpCacheManager.java')
-rw-r--r-- | vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/cache/DumpCacheManager.java | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/cache/DumpCacheManager.java b/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/cache/DumpCacheManager.java deleted file mode 100644 index 6c526d1fa..000000000 --- a/vpp-common/vpp-translate-utils/src/main/java/io/fd/honeycomb/translate/v3po/util/cache/DumpCacheManager.java +++ /dev/null @@ -1,123 +0,0 @@ -/* - * Copyright (c) 2016 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.v3po.util.cache; - -import static com.google.common.base.Preconditions.checkNotNull; - -import com.google.common.base.Optional; -import io.fd.honeycomb.translate.ModificationCache; -import io.fd.honeycomb.translate.v3po.util.cache.exceptions.check.DumpCheckFailedException; -import io.fd.honeycomb.translate.v3po.util.cache.exceptions.execution.DumpExecutionFailedException; -import io.fd.honeycomb.translate.v3po.util.cache.noop.NoopDumpPostProcessingFunction; -import javax.annotation.Nonnull; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -/** - * Manager responsible for returning Data object dumps<br> either from cache or by invoking specified {@link - * EntityDumpExecutor} - */ -public final class DumpCacheManager<T, U> { - - private static final Logger LOG = LoggerFactory.getLogger(DumpCacheManager.class); - - private final EntityDumpExecutor<T, U> dumpExecutor; - private final EntityDumpNonEmptyCheck<T> dumpNonEmptyCheck; - private final EntityDumpPostProcessingFunction<T> postProcessor; - - private DumpCacheManager(DumpCacheManagerBuilder<T, U> builder) { - this.dumpExecutor = builder.dumpExecutor; - this.dumpNonEmptyCheck = builder.dumpNonEmptyCheck; - this.postProcessor = builder.postProcessingFunction; - } - - /** - * Returns {@link Optional<T>} of dump - */ - public Optional<T> getDump(@Nonnull String entityKey, @Nonnull ModificationCache cache, final U dumpParams) - throws DumpExecutionFailedException { - - // this key binding to every log has its logic ,because every customizer have its own cache manager and if - // there is need for debugging/fixing some complex call with a lot of data,you can get lost in those logs - LOG.debug("Loading dump for KEY[{}]", entityKey); - - T dump = (T) cache.get(entityKey); - - if (dump == null) { - LOG.debug("Dump for KEY[{}] not present in cache,invoking dump executor", entityKey); - // binds and execute dump to be thread-save - dump = dumpExecutor.executeDump(dumpParams); - - // TODO (HONEYCOMB-210): remove empty check (empty dump is normal state, special handling is not needed) - try { - dumpNonEmptyCheck.assertNotEmpty(dump); - } catch (DumpCheckFailedException e) { - LOG.debug("Dump for KEY[{}] has been resolved as empty: {}", entityKey, e.getMessage()); - return Optional.absent(); - } - - // no need to check if post processor active,if wasn't set,default no-op will be used - LOG.debug("Post-processing dump for KEY[{}]", entityKey); - dump = postProcessor.apply(dump); - - LOG.debug("Caching dump for KEY[{}]", entityKey); - cache.put(entityKey, dump); - return Optional.of(dump); - } else { - return Optional.of(dump); - } - } - - public static final class DumpCacheManagerBuilder<T, U> { - - private EntityDumpExecutor<T, U> dumpExecutor; - private EntityDumpNonEmptyCheck<T> dumpNonEmptyCheck; - private EntityDumpPostProcessingFunction<T> postProcessingFunction; - - public DumpCacheManagerBuilder() { - // for cases when user does not set specific post-processor - postProcessingFunction = new NoopDumpPostProcessingFunction<T>(); - } - - public DumpCacheManagerBuilder<T, U> withExecutor(@Nonnull EntityDumpExecutor<T, U> executor) { - this.dumpExecutor = executor; - return this; - } - - public DumpCacheManagerBuilder<T, U> withNonEmptyPredicate(@Nonnull EntityDumpNonEmptyCheck<T> check) { - this.dumpNonEmptyCheck = check; - return this; - } - - public DumpCacheManagerBuilder<T, U> withPostProcessingFunction( - EntityDumpPostProcessingFunction<T> postProcessingFunction) { - this.postProcessingFunction = postProcessingFunction; - return this; - } - - public DumpCacheManager<T, U> build() { - checkNotNull(dumpExecutor, "Dump executor cannot be null"); - checkNotNull(dumpNonEmptyCheck, "Dump verifier cannot be null"); - checkNotNull(postProcessingFunction, - "Dump post-processor cannot be null cannot be null, default implementation is used if its not set"); - - return new DumpCacheManager<>(this); - } - } -} - - |