turcsanyip commented on code in PR #6158: URL: https://github.com/apache/nifi/pull/6158#discussion_r978594087
########## nifi-nar-bundles/nifi-azure-bundle/nifi-azure-processors/src/main/java/org/apache/nifi/processors/azure/storage/utils/DataLakeServiceClientFactory.java: ########## @@ -0,0 +1,124 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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.apache.nifi.processors.azure.storage.utils; + +import com.azure.core.credential.AccessToken; +import com.azure.core.credential.TokenCredential; +import com.azure.core.http.HttpClient; +import com.azure.core.http.ProxyOptions; +import com.azure.core.http.netty.NettyAsyncHttpClientBuilder; +import com.azure.identity.ClientSecretCredential; +import com.azure.identity.ClientSecretCredentialBuilder; +import com.azure.identity.ManagedIdentityCredential; +import com.azure.identity.ManagedIdentityCredentialBuilder; +import com.azure.storage.common.StorageSharedKeyCredential; +import com.azure.storage.file.datalake.DataLakeServiceClient; +import com.azure.storage.file.datalake.DataLakeServiceClientBuilder; +import com.github.benmanes.caffeine.cache.Cache; +import com.github.benmanes.caffeine.cache.Caffeine; +import org.apache.commons.lang3.StringUtils; +import org.apache.nifi.logging.ComponentLog; +import org.apache.nifi.services.azure.storage.ADLSCredentialsDetails; +import reactor.core.publisher.Mono; + +public class DataLakeServiceClientFactory { + + private static final long STORAGE_CLIENT_CACHE_SIZE = 10; + + private final ComponentLog logger; + + private final Cache<ADLSCredentialsDetails, DataLakeServiceClient> clientCache; + + public DataLakeServiceClientFactory(ComponentLog logger) { + this.logger = logger; + this.clientCache = createCache(); + } + + private Cache<ADLSCredentialsDetails, DataLakeServiceClient> createCache() { + return Caffeine.newBuilder() + .maximumSize(STORAGE_CLIENT_CACHE_SIZE) + .build(); + } + + public Cache<ADLSCredentialsDetails, DataLakeServiceClient> getCache() { + return clientCache; + } Review Comment: @nandorsoma I think it is a bit overkill to expose internal fields publicly for integration tests only. Furthermore, the IT does not really test we should check: it asserts the cache size at the end (1 client in the cache) but it is more important to check how many client instance creation have happened (only 1). It could be tested with a unit test and in that case the public getter would not be needed. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
